An object has a charge of 1 coulomb and excess charges that it contains is 6.25 x 10¹⁸.
How many excess charges does a charge of 1 coulomb contain?To illustrate the magnitude of 1 Coulomb, object would need an excess of 6.25 x 10¹⁸ electrons to have total charge of -1 C. An object with a shortage of 6.25 x 10¹⁸ electrons would have total charge of +1 C and the charge on single electron is -1.6 x 10⁻¹⁹ Coulomb.
Charge q on a body must always exist as an integral multiple of fundamental unit charge e, charge of an electron, where e=1.6×10⁻¹⁹C.
Thus, for 1 coulomb of charge the body will hold 1/1.6×10⁻¹⁹
=6.25×10¹⁸ electrons.
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whenever the net force on an object is zero, its acceleration group of answer choices is zero. may be more than zero. may be less than zero.
Whenever the net force on an object is zero, its acceleration is also zero.
When a body is at rest, force, which might take the form of pushes or pulls, tries to or really does induce motion.
Newton's second law of motion, expressed in driven form, says that
F=m.a.
Where F is force,
m is mass, and
a is acceleration.
When F is Zero, then m.a = zero
If there is no acceleration, the body will continue to move at its previous speed.
This speed could be zero or any other value.
The body is at rest at zero speed. That being said, it does not imply that the item should be at rest.
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each of the figures shows the path of a charged particle moving in the plane of the page in a magnetic field that is perpendicular to the page. if the mass, speed, and charge of the particle are the same, in which case does the field have the greatest magnitude?
In a homogeneous magnetic field, a positive charge particle travels in a clockwise, circular motion parallel to the surface of the page.
How do you determine a particle's path?Find the particle's x and y coordinates as just a function of the time before taking the time factor out of the equation to determine the trajectory of the particle. The support implementation of the automobile with respect to its origin is denoted by the formula r = atibt2j, in which a & b are constants.
What direction do magnetic field lines travel?A free north-pole will often move along a magnetic field line. Placing a tiny compass needle at a spot will reveal the magnetic field's direction. The direction of the magnetic field at a certain location is indicated by the compass's N-pole.
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Two carts are initially moving to the right on a low-friction track, with cart 1 behind cart 2. Cart 1 has a speed twice that of cart 2 and so moves up and rear-ends cart 2, which has twice the inertia of cart 1. Q1: Suppose that the the initial speed of cart 2 is vv. What is the speed of cart 1 right after the collision if the collision is elastic? Express your answer in terms of v.
If the impact is elastic, Cart 1's immediate post-contact speed is;
v₁ = ¹/₃u₁ oras one-third of the speed it had before the accident
As a result of the collision's elastic nature, we may state that;
u₁ + v₁ = u₂ + v₂ ---(eq 1)
Also, we can say that;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂ ---(eq 2)
Let us make v₂ the subject in eq 1 and put in eq 2;
v₂ = u₁ - u₂ + v₁ ----(eq 3)
Thus;
m₁u₁ + m₂u₂ = m₁v₁ + m₂(u₁ - u₂ + v₁)
making v₁ the subject gives;
v₁ = [(m₁ - m₂)/(m₁ + m₂)]u₁ + [2m₂/(m₁ + m₂)]u₂
We are informed that Cart 1 is twice as fast as Cart 2. Thus;
u₂ = ¹/₂v₁ = ¹/₂u₁
The momentum of cart 2 is also double that of cart 1's.
Thus, m₂ = 2m₁
Plugging in the values gives;
v₁ = [(m₁ - 2m₁)/(m₁ + 2m₁)]u₁ + [2(2m₁)/(m₁ + 2m₁)]( ¹/₂u₁)
Simplifying this gives;
v₁ = -¹/₃u₁ + ²/₃u₁
v₁ = ¹/₃u₁
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a block starts at rest and slides 5 meters down a frictionless incline with angle 36.87 degrees between the incline and the horizontal. what is the speed of the block after sliding this 5 meters?
Using conservation of energy, The speed of the block after sliding this 5 meters 3.76 m/s
What exactly is energy conservation?The conservation of energy is a fundamental principle of physics, according to which energy can only be transformed from one form to another and cannot be created or destroyed. In a closed system, the total amount of energy stays constant even though the forms and distribution of the energy may change.
This theory's fundamental tenet is that energy is a property of matter and that it is preserved while matter moves and assumes various forms. There are many other forms that energy can take, including kinetic energy (movement), potential energy (position), thermal energy (heat), electrical energy (electricity), chemical energy (chemical processes), and nuclear energy (nuclear reactions).
The idea of energy conservation is essential to many scientific and engineering fields, including energy management, physics, thermodynamics, and mechanics.
The equation for the conservation of energy can be used to determine the block's speed after sliding 5 meters down a frictionless incline at an angle of 36.87 degrees from the horizontal:
v² = 2gh
If h is the vertical height to which the block has fallen, given by h = 5 sin, and v is the block's final velocity, g is the acceleration caused by gravity (about 9.8 m/s) (36.87).
Substituting these values, we find that:
[tex]v =\sqrt{ (2gh)} =\sqrt{ (2 \times 9.8 \times 5 \times sin(36.87)) } = 3.76m/s[/tex]
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a ball is thrown directly up from a height of 0m with an initial speed of 2m/s. calculate the height of the apex of the throw
A ball is thrown directly up from a height of 0m with an initial speed of 2m/s. The height of the apex of the throw is approximately 0.825 meters.
The height of the apex of the throw can be calculated as follows:
h = vi * t - 0.5 * g * t^2
where:
vi = initial velocity = 2 m/s (up)
t = time of flight = 2 * vi / g
g = acceleration due to gravity = 9.8 m/s^2
Plugging in the values, we get:
t = 2 * 2 / 9.8 = 0.408 seconds
h = 2 * 0.408 - 0.5 * 9.8 * 0.408^2
h = 0.825 meters
Initial velocity refers to the magnitude and direction of the velocity of an object at a specific point in time. It is an important concept in physics, particularly in the study of kinematics, which is the branch of mechanics that deals with the motion of objects without considering the forces that cause the motion.
Initial velocity can be determined by various factors such as the position, velocity, and acceleration of an object at a given time. In most cases, it is expressed in meters per second (m/s) or other units of speed. Initial velocity plays a critical role in determining the trajectory and motion of an object. For example, when a ball is thrown, the initial velocity determines the initial speed and direction of the ball, which in turn affects its trajectory and how far it will travel.
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which of the following has the highest frequency? a. visible light b. you can't fool me, all these have the same frequency c. ultraviolet waves d. radio waves e. gamma rays
The term that has the highest frequency is e. gamma rays.
What is gamma rays?A type of electromagnetic radiation are gamma rays (EMR). Only the fact that they are released from an excited nucleus sets them apart from X-rays.
Gamma radiation, commonly referred to as gamma rays, are piercing electromagnetic radiation waves that result from the radioactive disintegration of atomic nuclei. It comprises of electromagnetic waves with shorter wavelengths than X-rays, on average.
A redistribution of electric charge within a nucleus produces gamma rays, a kind of electromagnetic radiation. The difference between gamma rays and X rays is not based on their basic characteristics, but rather on their origins. Gamma rays are essentially very energetic X rays.
Therefore, option E is correct.
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Gamma rays (option E) has the highest frequency among the options given.
What is frequency?The number of times a repeated event occurs in a given amount of time is known as its frequency. Because it differs from angular frequency, it is also sometimes referred to as temporal frequency. Hertz, which equals one occurrence per second, is the unit used to measure frequency.
What is gamma ray?Gamma radiation, commonly referred to as gamma rays, are piercing electromagnetic radiation waves that result from the radioactive disintegration of atomic nuclei. It comprises of electromagnetic waves with shorter wavelengths than X-rays, on average.
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if the ages of the earth and the moon are nearly identical, as believed, why are most rocks found on the moon so much older than rocks found on earth? group of answer choices
In contrast to the Earth, which has an atmosphere that weathers rocks and plate tectonic activity that breaks up rocks, if the ages of the Earth and the Moon are approximately equal as is thought, then the moon does not.
Why does the rock on the Moon have a longer age than the rock on Earth?That's because the moon most likely developed following a rogue, Mars-sized planet's early solar system collision with the newborn Earth.
Why are Earth's rocks younger than those on Mars and the Moon?On Earth, similar rock types that have been sculpted by melting, volcanism, and collisions are present. The earliest rocks on Earth were destroyed by weathering and plate tectonics. Moon rocks are older than any previously discovered ones.
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connect the short open-ended bnc cable to the vna. how does the smith chart display change? is this consistent with your understanding? now connect the longer bnc cable to the output. measure the length of the cable with a ruler and estimate the wavelength in the cable and the effective dielectric constant of the cable. is there any indication of increasing losses in the bnc cable as frequency increases?
When you connect a short, open-ended BNC cable to the VNA, the Smith chart display will not change, as the open-ended cable will not affect the impedance of the measurement. When you connect a longer BNC cable to the output], the Smith chart will change depending on the length of the cable and the frequency of the signal. The longer the cable, the bigger the change will be.
You can measure the length of the cable with a ruler and estimate the wavelength in the cable. The effective dielectric constant of the cable can be estimated using the formula εr = (c/v)2 - 1, where c is the speed of light and v is the velocity factor of the cable.
There may be an indication of increasing losses in the BNC cable as frequency increases, as higher frequencies will be attenuated more than lower frequencies.
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Will the daylight duration increase as you go north on June 21?
Answer:
Below
Explanation:
Yes ....due to the 23° tilt toward the sun, after the spring equinox and before the autumnal equinox, everyplace NORTH of you will have longer days than your place. ( in the Northern hemisphere)
what is the voltage between two points if 1.2 j of energy are required to move 10 mc between the two points?
The voltage between two points if 1.2 j of energy are required to move 10 mc between the two points is 120 V.
Voltage difference, also known as voltage drop or electrical potential difference, is the measure of the electric potential energy difference between two points in an electrical circuit. The voltage difference between two points determines the amount of energy required to move a unit of electric charge between those two points.
Voltage can be calculated using the formula:
V = ΔE / ΔQ
where ΔE is the change in energy and ΔQ is the change in charge. In this case, ΔE = 1.2 J and ΔQ = 10 mc, so:
V = ΔE / ΔQ = 1.2 J / (10 mc) = 120 V
Therefore, the voltage between the two points is 120 V.
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imagine two students 10 m away from each other, each losing 0.01% of his electrons. find the repulsion force in kn (kilo-newtons).
The required repulsion force is 1.11 x 10^-14 kilo-newtons.
What is Coulomb's law?The repulsion force between two electrons can be calculated using Coulomb's law, which states that the force between two point charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. The formula for the force is given by:
F = k * (q1 * q2) / r^2
where F is the force in newtons, k is the Coulomb constant (8.99 x 10^9 N m^2/C^2), q1 and q2 are the magnitudes of the charges in coulombs, and r is the distance between them in meters.
Since electrons have a negative charge, the force between them is repulsive. If each student loses 0.01% of their electrons, the force can be calculated as follows:
q1 = q2 = (0.01%) * (1.6 x 10^-19 C) = 1.6 x 10^-21 C
r = 10 m
Substituting these values into the formula gives:
F = k * (q1 * q2) / r^2 = 8.99 x 10^9 N m^2/C^2 * (1.6 x 10^-21 C)^2 / (10 m)^2 = 1.11 x 10^-11 N
Converting the force from newtons to kilo-newtons gives:
F (in kn) = F (in N) / 1000 N/kn = 1.11 x 10^-11 N / 1000 N/kn = 1.11 x 10^-14 kn
So, the repulsion force between the two students, each losing 0.01% of their electrons, is approximately 1.11 x 10^-14 kilo-newtons.
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a sphere of radius 8 mm has total charge of 160 mc (milli-coulomb) distributed uniformly over its volume. four mathematical spheres are drawn concentric to the charged sphere, i.e., with the same center. the radius of the four spheres are (a) 4 mm; (b) 8 mm; (c) 16 mm and (d) 32 mm. what is the charge inside each of the four spheres?
The correct option is C, the charge inside each of the four spheres is QA= 20 mC, QB = QC=QD = 160 mC.
The Charge density of sphere ρ = q/v = q / (4/3 πr^3)
ρ = 160mC / (4/3 π(8mm)^3)
Charge inside 4mm sphere => QA= ρ.V' = ρ. 4/3 π.(4mm)^3
=> QA= 160mC / (4/3 π(8mm)^3) x 4/3 π.(4mm)^3
=>QA= 160mC . 1 / 2^3
=> QA= 160mC / 8
=> QA= 20mC
QB = QC = QD = 160mC
Charge density is the measure of the amount of electrical charge per unit of volume in a material. It is a scalar quantity and is expressed in units of Coulombs per cubic meter (C/m3). The charge density of a material is proportional to the number of electric charges present in a given volume and can be either positive or negative. It is an important physical property of materials and plays a crucial role in many electrical and electronic applications.
In materials that conduct electricity, the charge density can vary depending on the type and distribution of charges in the material. For example, in metals, the charge density is relatively uniform, while in insulators, it can be highly non-uniform. In dielectrics, the charge density is proportional to the electric field and is used to calculate the capacitance of a capacitor.
The concept of charge density is also important in the study of plasma, where the charge density can be quite high and play a major role in determining the behavior of plasma. In such cases, the electric fields produced by the charge density can significantly affect the motion of charged particles in the plasma.
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Complete Question: -
A sphere of radius 8 mm has total charge of 160 mC (milli-Coulomb) distributed uniformly over its volume. Four mathematical spheres are drawn concentric to the charged sphere, i.e., with the same center. The radius of the four spheres are (A) 4 mm; (B) 8 mm; (C) 16 mm and (D) 32 mm.
What is the charge inside each of the four spheres?
(a.) QA= 80 mC, QB = 160 mC, QC =320 mC, QD= 640 mC
(b.) QA=20 mC, QB= 80 mC, QC= 40 mC, QD=10 mC
(c.) QA= 20 mC, QB = QC=QD = 160 mC
(d.) QA= 80 mC, QB = QC=QD = 160 mC
n electron is accelerated by a potential difference of 3000v and enters a region of a uniform magnetic field. as a result the electron bends along a path with a radius of curvature of 26.0 cm. find the speed as it enters the magnetic field
7.66 x 10⁷ m/s is the speed as it enters the magnetic field if an electron is accelerated by a potential difference of 3000v.
The radius of curvature of an electron in a magnetic field is given by the equation:
[tex]r=\frac{mv}{(qB)}[/tex],
where m is the mass of the electron, v is its velocity, q is its charge, and B is the magnetic field.
Knowing the radius of curvature and the charge and mass of an electron, magnetic field we can rearrange the equation to find the velocity:
[tex]v = \frac{qB * r}{m}[/tex].
Substituting the known values:
v = (1.6 x 10⁻¹⁹ C) * (B) * (26.0 cm) / (9.11 x 10⁻³¹ kg)
Since the electron is accelerated by a potential difference of 3000V, we can calculate its kinetic energy using the equation:
K = 0.5 * m * v²,
and then use that to find the velocity:
K = eV = 0.5 * m * v²,
where e is the electron charge, and V is the potential difference.
Solving for v:
v = √(2 * eV / m) = √(2 * (1.6 x 10⁻¹⁹ C) * (3000 V) / (9.11 x 10⁻³¹ kg)) = 7.66 x 10⁷ m/s.
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positive charge of q coulombs is uniformly spread over a large flat surface of area 6.77 meters squared. what would q need to be to make the magnitude of the electric field 0.00264 meters away from the surface equal to 1.43 n/c?
The Q need to be to make the magnitude of the electric field 0.00264 meters away from the surface equal to 1.43 nC is 1.07 × 10⁻⁹ C.
The magnitude of the electric field at the point near the charged surface is as :
E = Q / (4 × π × ε × A)
Q = E ( 4 × π × ε × A)
Where
E = 1.43 nC
ε = 8.85 x 10⁻¹² C²/N m²
A = 6.77 m²
Q = E ( 4 × π × ε × A)
Q = 1.43 × 4 × 3.14 × 8.85 x 10⁻¹² × 6.77
Q = 1.07 × 10⁻⁹ C
Thus, the charge is 1.07 × 10⁻⁹ C.
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Identify the law which states that the total momentum of an isolated system remains conserved. Give an example to explain the law.
The law of momentum conservation may be stated as follows. For a collision taking place amongst object 1 and object 2 in an isolated device, the whole momentum of the 2 gadgets earlier than the collision is equal to the whole momentum of the two items after the collision.
In Newtonian mechanics, momentum (more mainly linear momentum or translational momentum) is the made of the mass and velocity of an object. it's miles a vector amount, possessing a magnitude and a route. If m is an item's mass and v is its pace (also a vector quantity), then the item's momentum p
p=mv
Within the global device of units (SI), the unit of size of momentum is the kilogram metre according to second (kg⋅m/s), that's equivalent to the newton-2nd.
Newton's second law of motion states that the fee of exchange of a frame's momentum is identical to the net pressure performing on it. Momentum depends on the frame of reference, however in any inertial body it's miles a conserved amount, which means that if a closed machine is not affected by external forces, its total linear momentum does not alternate.
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a stream of gas consists of n molecules. each molecule has a mass m and speed v. the beam is reflected elastically from a rigid surface as shown. the magnitude of the total change in momentum of the stream is:
The magnitude of the total change in momentum of the stream is equal to the sum of the momentum of each molecule multiplied by the number of molecules, n, which is:
mvn
Where m is the mass of each molecule and v is the speed of each molecule.
This equation is derived from the law of conservation of momentum, which states that the total momentum of a system before and after a collision must remain the same. Therefore, the total change in momentum of the system is equal to the sum of the momentum of each molecule multiplied by the number of particles.
This equation is useful for calculating the momentum of a system, such as a stream of particles, when the mass and speed of the individual particles are known.
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in a system of gas, if we double the temperature what happens to the energy of the particles?
The average kinetic energy of a gas's particles will double if its temperature is doubled. The average kinetic energy of a gas's particles is directly proportional to its temperature.
What is a energy in science?Energy is defined as the "capacity to accomplish work," which refers to the capability of exerting a force that makes an object move. Although the definition is ambiguous, the meaning is obvious: energy is simply that force that causes objects to move. The two types of energy are potential and kinetic energy. In physics, energy is the quantifiable characteristic that is transferred to a body or even a physical system. Energy is visible in the performance of labour and also in the form of heat and light. Energy is a resource that cannot be generated or destroyed; instead, it can only be converted from one form into another in accordance with the law of conservation of energy.
Why energy is important?Modern medical technology, transportation, communications, computers, and many other items are all powered on energy. It might even save a person's life. One of the important sources of energy is the sun. The sun, from which all energy emanates, provides the majority of the energy used on Earth. In addition to giving us solar thermal energy, sunlight also enables solar (photovoltaic) cell to produce electricity.
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you hear an astronomer on the evening news, pointing out a coming alignment of planets and predicting that the extra gravitational attraction is sure to trigger a huge earthquake in california during the few hours of alignment. based on what has been covered in this class, a reasonable approach is to:
It would be reasonable to approach the astronomer's prediction with skepticism and to seek out additional information and analysis from reputable sources in the scientific community.
What do you mean by a reasonable approach?Based on what has been covered in class, a reasonable approach would be to consider the current scientific understanding of the relationship between planetary alignments and earthquakes.
There is no established scientific evidence that shows a direct causal relationship between planetary alignments and earthquakes. The majority of the scientific community agrees that earthquakes are primarily caused by the release of built-up stress in the Earth's crust, which is influenced by factors such as tectonic plate movement and the presence of geological faults.
Therefore, it would be reasonable to approach the astronomer's prediction with skepticism and to seek out additional information and analysis from reputable sources in the scientific community. It is always important to approach claims and predictions with a critical and evidence-based mindset, especially when it comes to issues with the potential to affect public safety.
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In Pem Davidson Buck's Derailing Rebellion: Inventing White Privilege:
1. How was race constructed in the early days of colonization?
2. How was white privilege established?
In Domination and Subordination:
1. What does it mean to be in a double bind? Provide an example.
Answer:among
Explanation:r:among r:among r:among r:among r:among r:among r:among
the requirement for permitting an ungrounded branch-circuit conductor to be spliced within an enclosure containing a panelboard would be found in which article of the nec?
The requirement for permitting an ungrounded branch-circuit conductor to be spliced within an enclosure containing a panelboard would be found in which article of the nec is Article 312, cabinets, cut out boxes, and meter socket enclosures.
What is conductor?A conductor, often known as an electrical conductor, is a material or substance that permits electricity to flow through it. When a voltage is given to a conductor, electrical charge carriers, generally electrons or ions, flow readily from atom to atom. Conductors are those substances that allow electricity to flow through them. Insulators are compounds that prevent electricity from flowing through them. Copper, aluminum, gold, and silver are examples of common conductors. Glass, plastic, rubber, and wood are examples of common insulators.
Here,
The requirement for permitting an ungrounded branch-circuit conductor to be spliced within an enclosure containing a panelboard would be found in Article 310 of the National Electrical Code (NEC). Article 310 covers the requirements for conductors and splices in electrical systems and includes specific provisions for splicing conductors within enclosures. The NEC sets standards for electrical installations and is widely adopted by local authorities in the United States.
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a projectile is launched at an initial speed (magnitude of velocity) at an angle above the horizontal. if the horizontal (to the right) is denoted as the direction and vertical (upward) as the direction, what are the x- and y-components of the initial velocity of this projectile?
The x and y-components of the initial velocity of the projectile are [tex]V_x = v_o cos\theta[/tex] and [tex]v_y = v_osine\theta- gt[/tex]respectively.
Projectile motion is what?When a particle is launched obliquely near the surface of the earth, it travels along a curved path while accelerating continuously in the direction of the planet's core (we assume the particle remains close to the surface). Such a particle's motion is known as projectile motion, and its path is known as a projectile.
A projectile motion is the simultaneous occurrence of two different rectilinear motions:
• Uniform velocity along the x-axis, which drives the particle's forward (horizontal) motion.
• Uniform acceleration down the y-axis, which drives the particle's downward (vertical) motion.
Applying 1st equation of motion on the x-axis,
[tex]Vx = v_ocos\theta + (0)t \\Vx = v_o cos\theta[/tex]
Applying the same 1st law of motion on the y-axis,
[tex]V_y=v_osine\theta - gt[/tex]
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a body of mass 2.00 kg is pushed straight upward by a 25.0 n external vertical force near the surface of the earth. what is its the magnitude of the object's acceleration?
The speed change over time is measured by the size of the acceleration vectors along path. The centripetal acceleration of the path as it circles the instantaneous curve radius determines the path's magnitude (t).
How can the strength of an accelerated force be determined?The acceleration that an object experiences is equal to the net force exerted on it multiplied by its masses, or a = F m, in accordance with Newton's second rule of motion. When the mass of an item and the total force acting on it are known, the acceleration of that object can be determined using this equation for acceleration.
What is magnitude?Magnitude is simply "distance or quantity" in the context of physics. It shows the size or direction in either absolute or relative terms. In the notion of motion, a thing is moving It can be used to describe something's size or scope. Magnitude in physics typically refers to a size or quantity.
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if you double the radius what happens to the velocity of the object?
The claim is that the velocity of the item will be decreased in half if the radius is doubled.
Why is velocity called that?As a result, the unit of velocity is meters a second, or m/s. The metric measure of speed is the meters per second (m/s). Cm per second (cm/s) can also be used to measure velocity.
What is an illustration of velocity?Velocity may be defined as the rate at which an object moves in a certain direction. as the pace of a car driving north on a freeway or the pace at which a rocket takes off.
The following equation states: The radius affects the movement in a circle in physics, and is expressed as v =r * ω , where v is motion, r represents radius, and is angular velocity. If the radius doubles, you must lower the rate by half in order to maintain the same angular velocity.
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6. in this experiment, you learned that the acceleration due to gravity is a constant that does not depend on the initial velocity. equation (2.3), however, has a v0 in it. are these two facts consistent? why?
Since all of the inputs used to calculate acceleration due to gravity (g) are constants, g will always have the value of a planet.
Equation 2.3 is derives using
v = v₀ + at
a = (v - v₀)/t
this is the equation for the final velocity or the velocity of an object accelerating with "a" for time t. In the Equation 2.3, a is not g, indeed its the acceleration of the object which was initially moving with velocity v₀, has an acceleration for time t.
For a projectile motion, in all the equations of motion we take a = g = 9.81 m/s², since the only acceleration that a projectile has is that due to gravity.
The value of acceleration due to gravity is calculated using
g = G M/R² ; where G is the universal gravitational constant; R is the radius of the earth and M is its mass.
So all the parameters for the calculations of g are constants and hence, g will have a constant value of a planet. Like for earth g = 9.81 m/s².
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The complete question is:
In this experiment (Free Fall), you learned that the acceleration due to gravity is a constant that does not depend on the initial velocity. Equation (2.3), however, has a v₀ in it. Are these two facts consistent? Why?
Equation 2.3 is, a = (v - v₀) / t where,
a = acceleration (m/s²)
v = final velocity (m/s)
v₀ = initial velocity (m/s)
t = time (sec)
What is integration of rational functions by partial fractions?
The integration of rational functions by partial fractions is a/(x-p) + b/(x-q) + ... + n/(x-z). The indefinite integral of each partial fraction can be found by ∫f(x)dx = 2 ln(x-1) + ln(x+1) + C, where C is the constant of integration.
How can one determine when to integrate partial fractions?
If the degree of the denominator is significantly smaller than the degree of the numerator, only partial fractions are possible. It's crucial to note this. You must factor the denominator as completely as feasible once you have realized that partial fractions can be calculated.
How are fractions integrated?The top and bottom of the fraction must be multiplied or divided by a number if you are asked to integrate a fraction. Sometimes it will be beneficial to divide a fraction into smaller parts before attempting to integrate it. For this, you can employ the partial fractions method.
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To find the volume of the piece of wood, the student has a measuring cylinder, a supply of water and the brass object in (a). The piece of wood and the brass object are small enough to be placed in the measuring cylinder.
The piece of wood does not sink in water why?
The piece of wood does not sink in water because the density of wood is less than that of water.
What is density?The density of a substance indicates how dense it is in a given area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a particular physical characteristic of a specific thing.
If the density of any material is less than any liquid, it does not sink. As the density of wood is less than that of water, the piece of wood does not sink in water.
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two waves traveling in the same medium interfere to produce a standing wave. what is the phase difference between the two waves at a node?
The phase difference between the two waves at a node is 180 degrees
What is phase difference?In wave theory, phase difference is defined as the difference in phase between two waves. The phase of a wave is a measure of the position of the wave relative to a reference point in time and space. For two waves with the same frequency and wavelength, a phase difference of π radians (180 degrees) corresponds to a complete wave cycle.
Therefore, the phase difference between the two waves at a node is π radians (180 degrees), meaning that the two waves are completely out of phase with each other. This phase difference results in the destructive interference of the two waves, leading to a node in the standing wave pattern.
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when a light bulb is connected to a 4.5 v battery, a current of 0.12 a passes through the bulb filament. what is the resistance of the filament?
The resistance of the filament is 37.5 Ohm. The result is obtained by using Ohm's law.
What is Ohm's law?Ohm's law states that the current passing through an electrical circuit is directly proportional to the voltage across two points.
It can be expressed as
I = V/R
Where
I = electrical current (A)V = voltage applied (V)R = resistance (Ohm)A light bulb is connected to a 4.5 V battery. The current passes through the bulb filament is 0.12 A. Find the resistance of the filament!
We have
V = 4.5 VI = 0.12 AUsing the formula above, we can get the resistance.
I = V/R
0.12 = 4.5/R
R = 4.5/0.12
R = 37.5 Ohm
Hence, the bulb filament has a resistance of 37.5 Ohm.
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suppose you are using gauss's law to find the magnitude of the electric field e a distance r outside a charge distribution with spherical symmetry. what would be the electric flux through the gaussian surface that you choose? hint: the left-hand side of gauss's law.
In this case, we would mainly choose a spherical Gaussian surface of radius r which is centered on the charge distribution. The electric flux through this surface would then be proportional to the total charge enclosed within the sphere, that is proportional to the electric field at a distance r:
Φ = 4πr²E
where E is the magnitude of the electric field at a distance r.
According to Gauss's law the electric flux through a closed surface is proportional to the charge enclosed within the surface:
Φ = Q / ε0
where Φ is the electric flux, Q is the charge enclosed within the surface, and ε0 is the vacuum permittivity.
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it takes 1100 j of work to stretch a spring from its natural length of1 m to a length of 4m. find the force constant of the spring
The force constant of the spring is 366.67 N/m.
The force constant (k) of a spring is calculated using Hooke's Law, which states that the force (F) exerted by a spring is equal to the product of its force constant (k) and the displacement (x) of the spring from its natural length (L). Therefore, the force constant (k) can be found using the following formula:
k = F / (x-L)
In this case, F = 1100 J, x = 4 m, and L = 1 m.
Plugging these values into the equation, we get:
k = 1100 J / (4 m - 1 m)
k = 1100 J / 3 m
k = 366.67 N/m
Therefore, the force constant of the spring is 366.67 N/m.
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