n the above table, write whether each type of transistor will act as an open circuit or a closed circuit.

Answers

Answer 1

The p-type transistors in the preceding table can be used as a closed connection or as an external switch.

What is a P-type transistor?

The p-type crystal serves as the n-p-n transistor's base. Base-collector junctions are typically forward-biased, but base-emitter junctions are reverse-biased, indicating the edit side of a junction has a larger concentration than the d e side.

A transistor of the kinds p and n is what?

In a p-type microelectronic, the hole density is much higher than the electron density. The energy level of the p-acceptor type is close to the valency bond but far from the p-type semiconductor. an n-type semiconductor that has had an intrinsic semiconductor treated with phosphate or antimony.

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Related Questions

. The classic Millikan oil drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oil drops were suspended against the gravitational force by a vertical electric field. Given the oil drop to be 1.00um in radius and have a density of 920 kg/m: c. Find the weight of the drop in Newtons (N) (Hint 1: You can use the density and radius to find the mass. You may need to look up the formula for the volume of a sphere. Hint 2: Recall from PHYS 121/111, that mass is not the same as the weight) If the drop has a single excess electron, find the electric field strength needed to balance its weight d. microscope The Millikan oil drop experiment was originally used to determine the electron charge by measuring the electric field and mass of the drop.

Answers

The weight of the drop 4.19 × 10⁻¹⁸ and the electric field strength needed to balance its weight is 2.36 × 10⁵N/C.

What is the formula for the electric field?

Test = k | Q | r 2 when E = F q. The size of the electric field produced by a point charge Q is determined by this equation. The distance r in the denominator is the separation between the point of interest and the point charge, Q, or the center of a spherical charge.

a) The weight is just the mass of the drop times the acceleration of gravity.

W = mg

Or in terms of density.

W = рVg

We can calculate the volume (R=1 m = 0.000001 m) if we assume that a drop's volume is spherical.

V = 4/3πR³

V = 4/3π(10⁻⁶)³

V = 4.19 × 10⁻¹⁸

Then, using equation (1), the weight will be:

W = 920 × 4.19 × 10⁻¹⁸×9.81

W = 3.78 × 10⁻¹⁴

b) To balance the weight, the electric field times the charge must be the same value in the opposite direction, which means:

W - qE = 0

E = W/q electron

E = 3.78 × 10⁻¹⁴/1.60 × 10⁻¹⁹

E = 2.36 × 10⁵N/C.

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Example (1) A cylindrical glass rod in air has index of refraction 1.52. One end is ground to a hemispherical surface with radius R = 200 cm. (a) Find the image distance of a small object on the axis of the rod, 8.00 cm to the left of the vertex. (b) Find the lateral magnification. Answer /​

Answers

a. The image distance is -212.275 cm

b.  the lateral magnification is equal to 26.534375

How to calculate?

The image distance can be found using the lens equation for a spherical lens:

1/f = 1/d_o + 1/d_i

we have that  focal length of a spherical lens is:

f = R / (n - 1)

f = R / (n - 1) = 200 cm / (1.52 - 1) = 200 cm / 0.52 = 385.385 cm

The object distance, d_o, is 8.00 cm,

calculating  the image distance, we have :

1/f = 1/d_o + 1/d_i

1/385.385 cm = 1/8.00 cm + 1/d_i

d_i = -8.00 cm * 385.385 cm / (385.385 cm - 8.00 cm) = -212.275 cm

b. The lateral magnification can be described as the ratio of the height of the image to the height of the object:

m = h_i / h_o

m = h_i / h_o = d_i / d_o = -212.275 cm / 8.00 cm = -26.534375

In conclusion, the negative sign indicates that the image is inverted with respect to the object.

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a rubber ball moving with an initial mom p collides with a vertical wall. which of the following is the correct direction of changeable momentum vector than the ball experience during the collision

Answers

Arrοw to the right, is correct about the vector of impulse that the call experiences during the cοllision.

Thus οption 2 is correct

What is the mοmentum vector's direction?

The ball's velοcity and the momentum vector have the same general directiοn.

It was stated befοre that an object moves in the same general direction as the velοcity vector.

Mοmentum will remain constant regardless of the impact type.

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Cοmplete question:

A rubber ball mοving with an initial momentum p1 collides elastically with a vertical wall. Which of the fοllowing is correct about the vector of impulse that the call experiences during the cοllision?

MomentumArrow to the rightMomentum of the system is conservedVector Up

Mark climbs up onto the roof of his house to hang a new flood light above the garage. Being afraid of heights, Mark carefully looks over the edge and ponders a possible fall to the ground below. The top of the roof is 5 meters above the ground below. If Mark has a mass of 65 kg, which of the following values Mark's gravitational potential energy?
A- 3188 J
B- 325 J
C- 49 J
D- 638 J

Answers

This potential energy is known as gravitational potential energy. It is the gravitational field's potential energy that is released when two objects fall in close proximity to one another.

The short answer to the question of potential energy

The term "potential energy" refers to the energy that is conserved or stored in a material or object. The location, configuration, or status of the substance or object determines the stored energy.

Which potential energy is an example?

Energy that has been stored is called potential energy. A battery, a stretched spring, and lifting an object are some examples. There are two major categories of energy: potential and kinetic.

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For the first one Answer in units of m. For the second one Answer in units of m/s
^2

Answers

a) The distance from that point on the Moon to the Earth must be less than 3.456 * 10⁸ m.

b)  The acceleration, a, at that point is 3.33 * 10⁻³ m/s².

What will be the distance from the Moon to the Earth?

The distance from that point on the Moon to the Earth is calculated using the formula below as follows:

rM = √(mE/mM) * r ) / (1 + √(mE/mM)

where;

rM is the point where the forces from the Earth and the Moon are the same

r is the distance between Earth and Moon = 3.84 * 10⁸ m

mE is the mass of the Earth = 5.98 * 10² kg

mM is the mass of the Moon = 7.36 * 10²² kg

simplifying and substituting the values:

rM = 9 * 3.84 * 10⁸ m / 10

rM = 3.456 * 10⁸ m

Hence, the point is at a distance of less than 3.456 * 10⁸ m.

b) The acceleration, a, at that point is determined as follows

a = G * mE / (rM2)

where;

G is the gravitational constant = 6.67 * 10⁻¹¹ Nm²/kg²

substituting the values:

a = 6.67 *10⁻¹¹ * 5.97 * 10²⁴ / (3.456 * 10⁸)²

a = 3.33 * 10⁻³ m/s²

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A blue ball is thrown upward with an initial speed of 22.8 m/s, from a height of 0.7 meters above the ground. 2.8 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 9.9 m/s from a height of 29.5 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2.
1) What is the speed of the blue ball when it reaches its maximum height?
0
m/s
2) How long does it take the blue ball to reach its maximum height?
2.35
s
3) What is the maximum height the blue ball reaches?
27.22242
m
4) What is the height of the red ball 3.64 seconds after the blue ball is thrown?
17.7290323
m
5) How long after the blue ball is thrown are the two balls in the air at the same height?
4
s
[Delayed Feedback]
6) Which plot correctly shows the velocity of the two balls as a function of time?Three plots of velocity vs time for the red and blue balls
A
B
C
[Delayed Feedback]
7) Which statement is true about the blue ball after it has reached its maximum height and is falling back down?
The acceleration is positive and it is speeding up
The acceleration is negative and it is speeding up
The acceleration is positive and it is slowing down
The acceleration is negative and it is slowing down

Answers

A blue ball is thrown upward at an initial speed of 30.6 meters per second from a height of 0.7 meters above the ground. The blue ball is tossed, and with 2.8 seconds left, a red ball is released.

What is the unit of measurement for speed?

An Sunt unit, kilometers an hour (symbol km/h), metres per second (icon mi/h or mph), naval km/h (symbol kn or km), foot each minute (symbol dps or feet high), feet per minute (symbol m s 1 and m/s), and Mach are all metric units of speed.

What elements make up speed?

Time split by distance are the speed-related metrics. The measurement unit of speed is the meter per second.

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a commuter train accelerates at a rate of 1.35 m/s2. how long does in seconds it takes to reach the op highest speed of 65.0 km/h starting from rest. what is the speed in meters per second, of the train 7 seconds after it starts declerating from its top speed

Answers

It takes 13.29 seconds for the train to reach 65.0 km/h and its speed is 7.76 m/s after 7 seconds of deceleration from its top speed.

What is speed ?

Speed is defined as the rate of change of position of an object in any direction.

To calculate the time it takes the train to reach 65.0 km/h:

First convert the speed from km/h to m/s: 65.0 km/h = 65.0 * 1000/3600 m/s = 18.06 m/sNow we can use the equation of motion, v = u + at, where v is the final velocity, u is the initial velocity (0 m/s), a is acceleration and t is time.t = (v - u)/a = (18.06 m/s - 0 m/s)/(1.35 m/s^2) = 13.29 s

The speed of the train 7 seconds after it starts decelerating from its top speed:

The equation of motion can be rearranged to give v = u + at. Here, a is the deceleration, which we'll assume to be negative and equal in magnitude to the acceleration (1.35 m/s^2).v = u + at = 18.06 m/s - (1.35 m/s^2 * 7 s) = 7.76 m/s.

So it takes 13.29 seconds for the train to reach 65.0 km/h and its speed is 7.76 m/s after 7 seconds of deceleration from its top speed.

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Determine the speed of B when A and B pass each other. The speed of B is ___ mi/h

Answers

To determine the speed of B when A and B pass each other, we need to first gather information about their initial velocities, relative speeds, and direction of motion.

The speed of A is given and we need to find the speed of B. The formula for relative speed can be used, which states that the relative speed of two objects is equal to the sum of their individual speeds when they are moving in the same direction, and the difference of their speeds when they are moving in opposite directions. In this case, if A and B are moving in opposite directions, then their relative speed is equal to the speed of A plus the speed of B.

It is important to note that the speed of B must be expressed in the same unit as the speed of A (e.g. miles per hour) to allow for accurate comparison and calculation. Once the relative speed is known, it can be used to determine the speed of B by solving for it algebraically. The answer should be a numerical value in miles per hour.

It is also important to take into consideration any external factors that may affect the motion of the objects such as friction, air resistance, and changes in direction or speed. These factors can impact the accuracy of the calculation and should be accounted for if possible.

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using the concept of marginal rate of substitution, explain what it means for the curve to get flatter as one moves along it from left to right.

Answers

The slope of the indifference curve, which depicts a frontier of utility for each combination of "good X" and "good Y," is known as the marginal rate of substitution.

What does the term "marginal rate of substitution" mean?

The marginal rate of substitution (MRS) in economics is the rate at which a consumer can trade a portion of one good for another good while keeping their utility constant. Marginal rates of substitution are equal at equilibrium consumption levels (on the assumption that there are no externalities).

Why does the marginal rate of substitution fall off the indifference curve as we descend?

True. The marginal rate of substitution (MRS) tends to decrease as we advance along the indifference curve. Because the intensity of a commodity's desire grows as its supply decreases. The amount forfeited as a result decreases with each additional unit of the other commodity.

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a heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall. which of the following statements about these rocks are correct?

Answers

If a heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall they will have the same acceleration due to gravity. They will reach the same final velocity before hitting the ground. They will hit the ground at the same time.

How can the motion of object be described?

The motion of the object can be described by the equation of motion, which states that the velocity of the object changes at a constant acceleration, equal to the acceleration due to gravity (g). An object falling from a height is a classic example of motion under the influence of gravity.

What do you understand by Gravitational force?

Gravitational force is described by the law of universal gravitation, which states that the force of gravity between two objects is proportional to the product of their masses and inversely proportional to the square of the length between them.

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The Complete question is:

A heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall. Which of the following statements about these rocks are correct?O Just as they are about to reach the ground, the heavier rock has more kinetic energy than the lighter rockO The moment they were released, both rocks had the same amount of gravitational potential energy O Both rocks have the same kinetic energy when they reach the ground O The heavier rock reaches the ground before the lighter rock. .O Both rocks different acceleration as they are about to reach the ground.

a sheet with charge q uniformly distributed over its area a is surrounded by a dielectric. show that the sheet creates a uniform electric field with magnitude e

Answers

It is simple to determine the size of the electric field by calculating the force per charge on the test charge. The standard metric units for electric field strength are derived from this concept.

What are magnitude and its definition?

Formulas for a vector's magnitude Magnitude Formula for a Vector with the Origin as the End Point. | v | = x 2 + y 2. When the starting points are (x1, y1) and the ending points are (x2, y2).

What size is the electric field at a particular field point?

Equation E = kQ/r2 determines the size of the electric field (E) created by a point charge with a charge of magnitude Q at a point r distant from the point charge, where k is a constant with a value of 8.99 x 109 N m2/C2.

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a 60 g tennis ball with an initial speed of 35 m/s hits a wall and rebounds with the same speed. (figure 1) shows the force of the wall on the ball during the collision.

Answers

The value of Fmax, the maximum value of the contact force during the collision is 1050N

Given the mass of tennis ball (m) = 60g

The speed of ball (v) = 35m/s

We know that when the ball hits the wall and rebound momentum acts on it such that momentum before and after collision should be same.

Momentum before hitting the wall is (p1) = mv = [tex]60 x 10^-3 x 35[/tex] = 2.1

Momentum after rebound is (p2) = -mv = -2.1

The change in momentum is calculated as: Δp = p1- p2

Then, Δp = 2.1 - (-2.1) = 4.2

We know that change in momentum is also called impulse such that:

Δp = F(t)dt

We need to evaluate area under curve which is trapezium =

[tex]6 +2/2 x 10^-3 x Fmax[/tex] = [tex]4 x 10^-3xFmax[/tex]

Fmax = 1050N

Hence the maximum force of collision is 1050N

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complete question: a 60 g tennis ball with an initial speed of 35 m/s hits a wall and rebounds with the same speed. (figure 1) shows the force of the wall on the ball during the collision. What is the value of Fmax, the maximum value of the contact force during the collision?

assume that the switch in the circuit in (figure 1) has been in the on position for a long time before switching instantaneously to the off position at t

Answers

An electrical switch controls whether a circuit is closed or open. They make it possible to regulate the current flow in a circuit. without the need to manually cut or reconnect the wires.

Why are switches used?

To operate an electric device, a switch must be utilized to close or open an electrical circuit. A switch completes the wiring and permits current to flow if it is in the Up position. Similar to this, a switch is at the "OFF" position when it completes the circuit and blocks the flow of current.

The primary switch, what is it?

The primary switches are safeguards for secure machine control and basic switching devices. For instance, they can be used as repair switch to swiftly shut down big machines and system so that upkeep work can be done securely.

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you apply 2 volts to a piezoelectric material and measure a displacement of 0.5 nm. what is the approximate piezoelectric coefficient d33 for this piezoelectric? you apply 2 volts to a piezoelectric material and measure a displacement of 0.5 nm. what is the approximate piezoelectric coefficient d33 for this piezoelectric? 250 pm/v 250 nm/v 500 nm/v 500 pm/v 1 nm/v

Answers

The piezoelectric coefficient, measured in volt meters per Newton, connects the stress placed on a crystal to the resulting electric field.

The definition of a piezoelectric device

The ability of piezoelectric devices to transform mechanical energy into electrical energy and through inverse piezoelectric effect makes them useful as actuators in a range of applications. The following benefits apply to actuators made of piezoelectric components. quick reaction. movement with grace.

What type of substance is piezoelectric?

When mechanical stress is applied to certain materials, it can result in the production of piezoelectric materials, or piezoelectrics. Quartz is a frequently used piezoelectric substance. When stress is applied, the electron moves, which results in the creation of an electric charge.

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find the speed v0 with which the quarterback must throw the ball. answer in terms of d , tc , vr , and g .

Answers

The required speed v₀ with which the quarterback must throw the ball is v₀ = √(vr^2 + 2gd) / cos(tc).

What is Speed?

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value.

According to question:

The speed v₀ with which the quarterback must throw the ball can be determined using the following formula:

v₀ = √(vr^2 + 2gd) / cos(tc)

where:

d is the distance from the quarterback to the receiver,

tc is the angle between the ground and the trajectory of the ball,

vr is the velocity of the receiver (assumed to be moving horizontally), and

g is the acceleration due to gravity (approximately 9.8 m/s^2).

Note that this formula assumes that the ball is thrown with a velocity that is equal to the initial velocity of the receiver. If the receiver is moving in a different direction, or with a different speed, the formula may need to be adjusted accordingly.

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|| A 180 g air-track glider is attached to a spring. The glider is pushed 10.2 cm against the spring, then released. A student with a stopwatch finds that 14 oscillations take 10.5 s. What is the spring constant?

Answers

The spring constant of the spring is 4.013 N/m

The formula for calculating the period of oscillation is as follows:

  T = 2π √(m / k)

m = the spring's massk = the spring constant

To find the spring constant, we can retrofit the formula as follow:

  k = 4π² (m / T²)

From the question, we are told that the student finds that 14 oscillations take 10.5 s, meaning the number of oscillations in one second is 0.75 (f = 0.75).

  Period (T) = 1/0.75 - 1.33 sec

Apply that number to the formula above:

  k = 4π² (m / T²)

  k = 4 * 3.14² (0.18 / 1.33²)

  k = 4.013 N/m

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consider the case of a student wishing to determine the spring constant for & spring by measuring the period of oscillation of a mass on the spring The student knows that the relationship between the spring constant (k); the mass (m); and the period of oscillation (T) is given by the equation T =2I_ (18) This is not a linear equation; to see this, plot the period vs . mass (m). Equation (18) can be made linear by squaring both sides of equation (18). Next; try to put the equation into y mx +b form (don't confuse m for slope in this equation with m for mass in equation 18 above). T? js the dependent variable like Y; m is the independent variable; like x Now plot T? versus m and find the slope of the line in your graph: The slope of the resulting line can be used to determine the spring constant; k Show your calculation of the slope and k; the spring constant; on your graph: Mass (kg) 0O25k8 I(s) 0.379 $ T? (s ) 0O5ke 0.530 $ 0.100kg 0.750 $ 0ESkg 0.200kg 0.250kg_ 0.920 $ L00 $ 1.200 $ 03kg 1300 $

Answers

The equation T = 2π√(m/k) relates the period of oscillation (T), the spring constant (k), and the mass (m) on the spring. To determine the spring constant, we need to linearize the equation by squaring both sides:T^2 = 4π^2(m/k)

Rearranging the equation to get k on one side:

k = 4π^2m / T^2

We can see that k is proportional to m/T^2, so we can plot T^2 vs m, and the slope of the resulting line will be equal to 4π^2/k.

From the given data:

Mass (m) | T (s) | T^2 (s^2)

0.025 kg | 0.379 s | 0.142 s^2

0.050 kg | 0.530 s | 0.281 s^2

0.100 kg | 0.750 s | 0.563 s^2

0.200 kg | 0.920 s | 0.847 s^2

0.300 kg | 1.100 s | 1.210 s^2

The slope of the line can be determined by performing a linear regression on the data. The slope of the line represents 4π^2/k, so we can find k by dividing 4π^2 by the slope.

For example, if the slope of the line is 0.35 s^2/kg, then k would be calculated as:

k = 4π^2 / slope = 4π^2 / 0.35 s^2/kg = 37.7 N/m

So, the spring constant for the spring is 37.7 N/m.

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if the force p causes point a to be displaced horizontally 2 mm , determine the normal strain developed in each wire.

Answers

The horizontal displacement at point A due to the force P can be split into two equal components, one acting on each wire. Therefore, the strain in each wire can be calculated as:

strain = (delta L) / L = (F / 2) / (A * E) = (P / 2) / (A * E)

where delta L = 2 mm, L = 300 mm, A = 30 mm^2, E = 8 x 10^9 N/m^2, and P is the force causing the displacement.

Substituting the given values:

strain = (2 / 300) = (P / 2) / (30 * 8 x 10^9) = (P / 2) / (240 x 10^9) N/m^2

Displacement is a term used in physics and engineering to describe the movement of an object from its initial position to its final position. It is a vector quantity that represents the straight-line distance between the starting and ending points. The direction of displacement is from the initial position to the final position and its magnitude is the distance traveled by the object.

Displacement is different from distance, which is the total length of the path traveled by an object. Distance can be greater than the displacement if the object travels a longer path, or it can be less than the displacement if the object moves in a circular or curved path.

Displacement is also different from velocity, which is the rate of change of displacement with time. Velocity takes into account both the magnitude and direction of displacement, whereas displacement only considers the magnitude.

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Complete Question: -

The two wires are connected together at A. If the force P causes point A to be displaced horizontally 2 mm, determine the normal strain developed in each wire. 300 mm 30 30 300 mm 8

a long, straight metal rod has a radius of 5.90 cm and a charge per unit length of 29.8 nc/m. find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod's axis.

Answers

Complete Question: Distances here:

(a)3.00 cm

(b) 10.0 cm

(c) 100cm

Electric field at distances from axis of rod is:

The electric field (E) at a distance (r) from the axis of a long, straight metal rod with a charge per unit length (λ) can be calculated using the formula:

E = 2λ / (π * ε0 * r)

where ε0 is the electric constant ([tex]8.854 * 10^-12[/tex] [tex]C^2/Nm^2[/tex]).

For (a) r = 3.00 cm, E = [tex]8.854 * 10^-12[/tex]  C/m / (π * [tex]8.854 * 10^-12 C^2/Nm^2[/tex] * 0.03 m) = [tex]9.84 * 10^7 N/C[/tex].

For (b) r = 10.0 cm, E = [tex]2 * 29.8 * 10^-9[/tex] C/m / (π * [tex]8.854 * 10^-12 C^2/Nm^2[/tex] * 0.1 m) = [tex]3.08 * 10^7 N/C[/tex].

For (c) r = 100 cm, E = 2 * [tex]29.8 * 10^-9[/tex] C/m / (π * [tex]8.854 * 10^-12 C^2/Nm^2[/tex] * 1 m) = [tex]3.08 * 10^5[/tex] N/C.

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In a showdown on the streets of Laredo, the good guy drops a 5.00-g silver bullet at a temperature of 20.0°C into a 100-cm' cup of water at 90.0°C. Simultaneously, the bad guy drops a 5.00-g copper bullet at the same initial temperature into an identical cup of water.
Which one ends the showdown with the coolest cup of water in the West? Neglect any energy transfer into or away from the container.

Answers

The silver would be coolest since it has the lowest heat capacity.

What is the heat capacity?

Heat capacity, also known as thermal capacity, is the amount of heat energy required to raise the temperature of a substance by a certain amount. It is expressed as the amount of heat energy per unit temperature change, and is usually measured in joules per kelvin (J/K) or calories per degree Celsius (cal/°C).

Heat capacity is a key property of materials that provides important information about their thermal behavior and is critical for many areas of science and technology.

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classify each change of state (melting, freezing, vapor- ization, condensation, and sublimation) as endothermic or exothermic.

Answers

The change of state such as melting, condensation and freezing are exothermic reaction, whereas vaporization and sublimation are considered as endothermic reaction.

What characterizes endothermic from exothermic phase changes?

Heat is absorbed throughout endothermic reactions, and a positive enthalpy change results. Heat is released during exothermic reactions, and a negative enthalpy change arises.

What causes endothermic melting?

Since liquid water can rotate and vibrate but solid ice could only vibrate, water has a higher energy state than ice. This implies that in order for ice to change into a state with higher energy (water), it must absorb energy; as a result, the process is endothermic with reference to the system (surrounding temperature decreases).

What causes endothermic sublimation?

Heat absorption causes to sublimation since this gives some molecules the energy they need to overcome the forces that draw them to one another and escape into the vapour phase. This process is an endothermic transformation since it uses more energy.

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two rods, one made of brass and the other made of copper, are joined end to end. the length of the brass section is 0.200 m and the length of the copper section is 0.800 m . each segment has cross-sectional area 0.00700 m2 . the free end of the brass segment is in boiling water and the free end of the copper segment is in an ice-water mixture, in both cases under normal atmospheric pressure. the sides of the rods are insulated so there is no heat loss to the surroundings. part a what is the temperature of the point where the brass and copper segments are joined? express your answer in degrees. activate to select the appropriates template from the following choices. operate up and down arrow for selection and press enter to choose the input value typeactivate to select the appropriates symbol from the following choices. operate up and down arrow for selection and press enter to choose the input value type t

Answers

The temperature of the point where the brass and copper segments are joined will be less than 100°C because  k1 < k2

How to calculate?

The rate of heat flow from the boiling water to the junction is given by:

q1 = k1 * A * (T1 - Tj) / L1

The rate of heat flow from the ice-water mixture to the junction is given as :

q2 = k2 * A * (Tj - T2) / L2

Because heat is conserved, q1 = q2, so we have:

k1 * A * (T1 - Tj) / L1 = k2 * A * (Tj - T2) / L2

Finding for Tj, we have :

Tj = (k1 * T1 * L1 + k2 * T2 * L2) / (k1 * L1 + k2 * L2)

Substituting  the given values, we have:

Tj = (k1 * 100 * 0.200 + k2 * 0 * 0.800) / (k1 * 0.200 + k2 * 0.800) = 100 * 0.200 / (0.200 + 0.800 * k1/k2)

In conclusion, Tj will be less than 100°C

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A bicycle has wheels of radius 0.330 m. Each wheel has a rotational inertia of 0.0800 kg⋅m2 about its axle. The total mass of the bicycle including the wheels and the rider is 72.0 kg. When coasting at constant speed, what fraction of the total kinetic energy of the bicycle (including rider) is the rotational kinetic energy of the wheels?

Answers

The ratio of the rotational kinetic energy of the rider and the bicycle is 0.0205.

What is Rotational kinetic energy?

Rotational energy or the angular kinetic energy is the kinetic energy which is due to the rotation of an object and is also a part of the total kinetic energy.

We know that Rotational Kinetic Energy is given by,

KE(rid) = 1/2 Iω²

KE(rid) = 1/2 I (v/r)²

KE(rid) = 1/2 I (v²/r²)

where, I is the inertia and ω is the angular velocity.

That equation are perfect for the 4 wheel, however we need a similar expression for the cycle

KE (bicycle) = 1/2 mv²

The total energy can be expressed as follow,

Kt = K(rid) + K(bicycle)

Kt = 1/2 I (v²/r²) + 1/2 mv²

K(rid)/ K(bicycle) = 2I/ (2I + mr²)

(You only need to put the previous values and simplify)

Substituting , I = 0.0800, m = 72kg, and r = 0.330 m

We have,

K(rid)/ K(cycle) = 2I/ (2I + mr²)

K(rid)/ K(cycle) = 2 × 0.080/ (2 × 0.080 + 72×(0.330)²)

K(rid)/ K(cycle) = 0.16/ (0.16 + 72 × 0.108)

K(rid)/ K(cycle) = 0.16/ (0.16 + 7.776)

K(rid)/ K(cycle) = 0.16/ 7.936

K(rid)/ K(cycle) = 0.0205

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Convert 25 meters per second (m/s) to feet per second (ft/s)

Answers

Answer: 82.021 Feet per second

Explanation:

Answer:

82.021 Feet per second

Explanation:

two protons are separated by certain distance and each experience a repulsive force according to coulomb's law. if the two protons are replaced with two electrons, the force between the electrons is as compared to the force that existed between the two protons.

Answers

According to Coulomb's law, The force between two electrons will be the same as the force between two protons if they are separated by the same distance.

According to Coulomb's law the force between two charged particles is proportional to the magnitude of their charges and inversely proportional to the square of the distance between them. If electrons and protons both have a charge whose magnitude is same but has opposite sign, then the force between two electrons will be the same in magnitude but opposite in direction as the force between two protons.

Coulomb's law is referred as a fundamental principle in electrostatics which describes the interaction between electrically charged particles. Coulomb's law can mathematically be expressed as:

F = k * (q1 * q2) / r^2

where F is the force between the charges, k is the Coulomb constant, q1 and q2 are the magnitudes of the charges, and r is the distance between the charges.

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in fig. 24-38, what is the net electric potential at point p due to the four particles if v 0 at infinity, q 5.00 fc, and d 4.00 cm?

Answers

The electric field potential at the point p is found to be 1.125 Volts.

The electric field at any point is given by the formula,

V = kq/r

Where,

k is the constant,

q is the charge,

r is the point at which the potential is to be found,

Here in the question it is given that,

A charge of magnitude 5 fC and we have to find the potential at a point p which is a 4cm.

Now, putting all the values,

V = 9 x 10⁹ x 5 x 10⁻¹²/4 x 10⁻²

V = 1.125 Volts.

So, the electric potential at the point p is 1.125 volts.

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here is an `x` by `x 1` rectangle and a `1` by `x` rectangle. the rectangles are similar. determine the value of `x` to show the possible dimensions for these rectangles.

Answers

Here is an `x` by `x 1` rectangle and a `1` by `x` rectangle. the rectangles are similar. The value of `x` to show the possible dimensions for these rectangles is x = (-1 + √5) / 2 or x = (-1 - √5) / 2

The similar rectangles have proportional sides. Given that one rectangle is x by x + 1 and the other is 1 by x, the ratio of their sides must be equal, so:

x / (x + 1) = 1 / x

Solving for x:

x^2 + x - 1 = 0

Use the quadratic formula to find the solutions:

x = (-1 ± √(1^2 - 4 * 1 * -1)) / (2 * 1)

x = (-1 ± √(1 + 4)) / 2

x = (-1 ± √5) / 2

Thus, the possible values of x are:

x = (-1 + √5) / 2 or x = (-1 - √5) / 2

Note that these are the Golden Ratio and its inverse, respectively

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a wire with mass 0.397 g is stretched between two points 88 cm apart. if the tension of the string is 110 n, the frequency of the second harmonic is hz. (give answer to the nearest ones place.)

Answers

When a wire with a mass of 0.397 g is stretched between two places 88 cm apart, the frequency of the second harmonic is 143 Hz.

What is frequency?

The frequency of a repeated event is the number of occurrences per unit of time. It is separate from angular frequency and is sometimes referred to as temporal frequency. The unit of frequency is hertz, which equals one occurrence every second.

Here,

To calculate the frequency of the second harmonic, we need to know the tension and the linear mass density of the wire. The linear mass density can be calculated as:

mass/length = 0.397 g / 88 cm = 0.0045 g/cm

We can then use the formula for the frequency of a string under tension:

f = (1 / 2L) * (T / μ)^0.5

where f is the frequency, L is the length of the string, T is the tension, and μ is the linear mass density.

Substituting the values from the problem, we get:

f = (1 / 2 * 88 cm) * (110 N / 0.0045 g/cm)^0.5 = (1 / 176 cm) * (24444 N/g)^0.5

f = (24444 N/g)^0.5 / 176 cm

f = 143 Hz

So, the frequency of the second harmonic is 143 Hz when a wire with mass 0.397 g is stretched between two points 88 cm apart.

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which of these diagrams most closely represents the gravitational forces that the earth and moon exert on each other?

Answers

A pair of Newton's Third Law effects are represented by gravitational pull of a Earth and Moon. Both the Moon and the Earth are gravitationally pulled in opposite directions by the Earth.

Is the gravitational pull of the moon and Earth similar?

Its surface gravity of a moon is only a sixth that of Earth because an object's mass or size determine its force of gravity now at surface.

What exactly is gravity, and how does it appear?

The force that now the earth applies to a body is referred to as gravitational force. The downhill and upward movement of water in rivers and streams, as well as the upwards motion of the a ball as it is thrown, are examples of motion brought on by gravitational force.

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The acceleration of an oscillator undergoing simple harmonic motion is described by the equation ax(t)=−(16m/s2)cos(18t), where the time t is measured in seconds. What is the amplitude of this oscillator?

Answers

The amplitude of this oscillator is 16 m/[tex]s^{2[/tex] This is because the amplitude of the oscillator is the maximum value of the acceleration, which in this case is 16 m/[tex]s^{2[/tex].

The equation [tex]ax(t)=a(16m/s^{2} )cos(18t)[/tex]is just a mathematical representation of how the acceleration of the oscillator changes over time.

The amplitude of an oscillator is the maximum displacement from the equilibrium or rest position. In other words, it is the maximum distance the oscillator travels from its rest position during one complete cycle.

The amplitude of a simple harmonic oscillator is constant, meaning that the oscillator will travel the same distance from its rest position each time it completes a cycle. The amplitude of an oscillator is usually represented by the letter A.

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