The ability of a metal to be stretched in any direction by hammering, rolling, etc. without rupturing is known as malleability. One example of a malleable metal is lead.
What characteristic of metal makes it possible to pull it into wires?Ductility is the ability of metals to be pulled into thin wires. The only non-ductile metals are zinc and mercury, whereas gold has a high degree of ductility.
What about metals that made it stretch when it was pushed through the draw plates?The capacity of a metal to be permanently pulled or stretched without rupture or fracture is known as ductility (Figure 2-5). Metals with a low degree of ductility will break or crack before they bend. The capacity of a metal to be hammered, rolled, or pressed into different shapes without rupturing or breaking is known as malleability.
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two people fishing from rowboats on a lake are 100 m apart and have hooked their lines into the same sunken log. the first has 85 m of line out, and the second has 68 m of line out. assuming that the lines both lie in the same vertical plane, meet at a point (on the log), and are taut, how deep is the sunken log?
The sunken log would have to be at least 17 meters deep for the two lines to meet at the same point.
This is because the first line has 85 meters of line out, so the log would need to be at least 85 meters below the surface for the line to be taut. The second line has 68 meters of line out, so the log would need to be at least 68 meters below the surface for it to be taut. Therefore, the sunken log must be at least 17 meters below the surface for the two lines to meet at the same point.
Depth is the measurement of how far an object is from front to back. It is measured in three dimensions, and can refer to a physical object or a virtual environment. For a physical object, depth is measured from the front of the object to the farthest point behind it. For a virtual environment, depth can refer to the distance from the camera to the farthest objects in the scene.
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what is the shortest delay time, in milliseconds, that would cause two 75 hertz sine waves to be 150 degrees out of phase?
One wave's 150 degree positive displacement is exactly cancelled by the second wave's 150 degree negative displacement. The resulting wave has zero amplitude.
How do you determine a wave's time delay?The difference in length a wave frontal must go between the frame of reference and the element of interest is used to determine the wave face time delay. After then, the time is determined by multiplying the distance by the sound speed.
What is the delay time unit?A delay unit is a multi-path structure that offers a predetermined time delay or configurable time delay. It differs from a phase shifter yet is comparable to one. Typically, a phase shifter offers a predetermined insertion phase difference.
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the intensity of light at a depth of meters below the surface of a lake satisfies the differential equation (a) at what depth, in meters, is the intensity of light half of , where equals the intensity of light at the surface (where )? meters (b) what is the intensity of light at a depth of 10 meters (in terms of )? intensity
In meters, the intensity of light at the surface is 0.573 m.
Where does intensity come from?A measure that is produced from a random measure is known as an intensity measure in probability theory. The intensity measure, which is not random and is defined as the random measure's expected value for a set, corresponds to the average volume that the random measure gives a set.
a. We first solve the differential equation to obtain the expression for I before determining the depth, x.
dI/dx = (-1.21)I
dI = (-1.21)Idx
dI/I = -1.21dx
Integrating both sides, we have
∫dI/I = ∫-1.21dx
㏑I = -1.21x + C
I = exp(-1.21x + C)
I = exp(-1.21x)exp(C) Let exp(C) = A
I =Aexp(-1.21x)
when x = 0, I = L. When these are substituted into the equation, we have
L = Aexp(-1.21 × 0)
L = Aexp(0)
L = A
So, I = Lexp(-1.21x)
When I = L/2, we want to determine x.
So, L/2 = Lexp(-1.21x)
1/2 = exp(-1.21x)
-1.21x= ㏑(1/2)
-1.21x= -㏑2
x = -㏑2/-1.21
x = 0.693/1.21
x = 0.573 m
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a block, initially at rest, begins to slide down a frictionless ramp which is inclined at 21o. the block was 2 m above the ground at the moment it started sliding down. how much time, in seconds, does it take for the block to reach at the bottom of the ramp? assume that the bottom of the ramp is at the level of the ground
It takes approximately 0.639 seconds for the block to reach the bottom of the ramp.
The ramp is frictionless, the acceleration of the block is purely due to gravity, and the kinematic equation can be simplified to:
h = 0.5 * g * t^2
Solving for t:
t = sqrt(2h / g) = sqrt(2 * 2 / 9.8) = sqrt(4 / 9.8) = sqrt(0.408) = 0.639 s
The kinematic equation is a mathematical formula that describes the motion of objects. It is used to calculate the velocity, acceleration, and position of an object over a specific period of time. The equation takes into account the initial velocity of the object, the acceleration of the object, and the time elapsed. There are several kinematic equations, each of which is designed to describe a specific aspect of motion.
For example, the first kinematic equation describes the velocity of an object after a given time interval. The second kinematic equation describes the position of an object after a given time interval. The third kinematic equation describes the acceleration of an object over a given time interval. Each of these equations is useful in different situations, such as calculating the motion of a ball thrown in the air or determining the velocity of a car at a specific time.
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the length, breadth, height of a room are 6 m 80 cm, 5 m 10 cm and 3 m 40 cm respectively. find the longest tape which can measure the dimensions of the room exactly.
The longest tape which can measure dimensions of room is 1m 70cm long.
What is dimension?In physics and mathematics, dimension of mathematical space is defined as the minimum number of coordinates needed to specify any point within it.
Given,
Length = 6m 80 cm = 680cm
Breadth = 5m 10cm = 510cm
Height = 3m 40cm = 340cm
To convert meters into centimeters, multiply it with 100
Length = 6m 80 cm
= 6 x 100 + 80
= 680cm
And, breadth = 5m 10cm
= 5 x 100 + 10
= 510cm
Height = 3m 40cm
= 3 x 100 + 40
= 340cm
find the prime factors of the numbers, it will be:
Length = 680 is 2 x 2 x 2 x 5 x 17
Breadth = 510 is 2 x 5 x 3 x 17
Height = 340 is 2 x 2 x 5 x 17
Highest Common Factor will be,
So, the HCF = 2 x 5 x 17
= 170cm or 1m 70cm
Hence, the longest tape which can measure the dimensions of the room exactly is 1m 70cm long.
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if the cross-sectional area of the core is the same everywhere and the permeability of the core is infinite, what is the value of
Zero permeability denotes a totally reflecting barrier, whereas infinite permeability denotes the lack of a barrier.
What is the core's permeability?Air is used to determine a core plug's permeability. The mean pressure is 2.152 psi, and only one measurement is taken. 46.6 md is the air permeability.
Both windings have an infinite resistance. The core has unlimited permeability and zero resistance.
In granular materials like sedimentary rocks, permeability is mostly determined by the size, shape, and packing arrangement of the grains as well as the size, shape, and size distribution of the pores in the substance.
A molecule can travel through the membrane quickly and easily when the permeability is high.
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treat each of your eyes as a circular aperture of diameter 4.8 mm. light of wavelength 536 nm is used to view two point sources that are 140 m distant from you. how far apart must these two point sources be if they are to be just resolved by your eye? assume that the resolution is diffraction limited and use rayleigh's criterion.
Eyes of circular aperture of diameter 4.8 mm. The light of wavelength 536 nm used to view the two point sources that are 140 m. The far apart must be the two point of source, if they are to just resolved by the eyes is 1.8 × 10⁻⁵ cm cm.
The wavelength = 536 nm
The diameter = 4.8 mm
The angle under which the two point source ca be identified as the separated :
Ф = 1.22 ( λ / d)
Where
The λ = wavelength
d = diameter
Ф = 1.22 ( 536 × 10⁻⁹ m/ 4.8 × 10⁻³ m)
= 1.3 × 10⁻⁴
Now, Ф = sin Ф = tan
The distance between the two points is :
d = 1.3 × 10⁻⁴× 140 × 10⁻³ cm
= 1.8 × 10⁻⁵ cm
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a cap of 500 kvar is placed in parallel with an indicator of 400 kvar. calculate the apperat power g
A 400 kvar indication is set parallel to a 500 kvar cap. the apparent power The circuit's apparent power is 6400 kVA.
The apparent power, S, in a electrical circuit can be calculated using the formula
S = √(P^2 + Q^2),
where P is the real power and Q is the reactive power.
In this case, we are given that the cap has a reactive power of 500 kvar and the indicator has a reactive power of 400 kvar.
The apparent power can be calculated as follows:
S = √((500 kvar)^2 + (400 kvar)^2)
S = √(25000000 + 16000000) kVA
S = √41000000 kVA
S = 6400 kVA
So the apparent power in this circuit is 6400 kVA.
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from which location could you observe all of the stars during the course of a year?
To observe all of the stars during the course of a year, you would need to be at a location near the Earth's equator. This is because at the equator, the Earth's axis of rotation is perpendicular to the plane of the ecliptic, which is the path that the Sun appears to follow across the sky.
From where the equator of earth passes from?The equator of the Earth is an imaginary line that circles the Earth and passes through the Earth's center, dividing the Earth into the Northern Hemisphere and the Southern Hemisphere.
In how many parts the earth is divided?The Earth is divided into two main parts: the Northern Hemisphere and the Southern Hemisphere. These two hemispheres are divided by the equator, which is an imaginary line that circles the Earth and passes through the Earth's center.
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why more physicists are starting to think space and time are ‘illusions’
Space and time are considered to be "illusions" in the sense that they are not fundamental. But are emergent concepts that arise from the behaviour of matter and energy in the universe. This idea challenges the classical view of spacetime as a fixed and unchanging background.
On what theories is the idea based?This idea is based on theories such as loop quantum gravity and string theory. These suggest that spacetime is not a fixed and stable background, but is instead a dynamic and constantly changing entity that is shaped by the distribution of matter and energy in the universe.
What does the space and time refer to?Space refers to the three-dimensional expanse in which all matter exists. Time, on the other hand, is a dimension that describes the progression of events and the duration between them. Together they form the concept of spacetime, which is a 4-D model that describes how objects move and change over time in space.
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OPIC # 8 WAVES QUESTION Q23/P13/M/J/16 21 A beam of red laser light has length 1.0m. What is the order of magnitude of the number of wavelengths of the red light in 1.0m? A 10^4 B 10^6 C 10^8 D 10^10
Answer:
The order of magnitude of the number of wavelengths of red light in 1.0m is B) 10^6.
Explanation:
The wavelength of red laser light is around 700 nm, or 7 x 10^-7 meters. Therefore, the number of wavelengths of red light in 1.0 meter is (1.0 m) / (7 x 10^-7 m) = 1.0 / 7 x 10^-7 = 1.0 / 7 x 10^7 = approximately 10^7. The order of magnitude is 10^6.
calculate the gravitational field strength on the surface of mars. mars has a radius of 3.43x106 m and a mass of 6.37x1023 kg
Gravitational field strength on the surface of Mars is approximately 3.71 m/s².
What is gravitational field?Gravitational field is a model used to explain the influences that massive body extends into the space around itself, producing force on another massive body.
The gravitational field strength (g) on the surface of a planet can be calculated using the formula:
g = GM / r²
where G is the gravitational constant (6.67 x 10⁻¹¹ Nm²/kg²), M is the mass of the planet, and r is the radius of the planet.
Plugging in the values for Mars:
g = (6.67 x 10⁻¹¹ Nm²/kg²) x (6.37 x 10²³ kg) / (3.43 x 10⁶ m)^2
g = 3.71 m/s²
So the gravitational field strength on the surface of Mars is approximately 3.71 m/s².
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a football is thrown upward at some angle above the horizontal. if we neglect air friction, then we can conclude that the acceleration vector of the football is
if we neglect air friction, then we can conclude that the acceleration vector of the football is not accelerating horizontally.
The acceleration vector of the football, neglecting air friction, is directed downward with a constant magnitude of 9.8 m/s^2, which is equal to the acceleration due to gravity. This is because the only force acting on the football is gravity, which pulls it toward the center of the earth, and the direction of the acceleration is equal to the direction of the gravitational force. So, the acceleration vector of the football is given by:
a = (0, -9.8 m/s^2)
where the x-component is 0, because the football is not accelerating horizontally, and the y-component is -9.8 m/s^2 because the acceleration is directed downward.
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what are the units of k for a third order reaction?
For just a third order reaction, the units of k are mol-²L²s-¹.
Which reaction order's units of k are appropriate?The overall reaction sequence affects the units of a rate constant, k. M/s, 1/s, and 1/(Ms) are the units of k for zero-order reactions, first-order reactions, and second-order reactions, respectively.
What is the third-order reaction's chemical equation?The result of this integration is T = 1/(2kA²), which is calculated just at twice in question. Contrary to first-order situations, where the duration to half its concentrations is independent of that, it is clear that the time to halve the concentration relies on the concentration.
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what is the most rare dimonde
The most valuable and rarest diamonds in the world are red ones.They are also referred to as Fancy Reds and come in a range of hues from orange-red through brownish red.
Who has the most valuable diamond?The most valuable diamond in the entire world is the Kohinoor.The main diamond for the British Crown is an oval stone 109 carats in weight that weighs 21.6 grams, according to reports.The diamond currently belongs to Queen Elizabeth II and may be traced back to India.The diamond is thought to be priceless due to its rarity.
What kind of diamond is the priciest?Which Diamond Color Has The Highest Cost?Red diamonds represent the most valuable diamond color, despite the fact that white diamonds are more common.This is mainly because they are so uncommon.Red diamonds differ from those other colored diamonds in that they have a different source for their hue.
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at a distance of 54.2 cm from a very long (essentially infinite) uniform line of charge, the electric field strength is 1,568 n/c. at what distance (in cm) from the line will the field strength be equal to 627 n/c?
The electric field strength at a distance of 34.8 cm from the line charge.
The electric field strength (E) at a point is directly proportional to the charge density (λ) of the line charge and inversely proportional to the square of the distance (d) from the line. That means:
E ∝ λ / d^2
So, we can write:
[tex]\frac{E1}{E2} =\frac{ \lambda}{d1^2} * \frac{ d2^2}{\lambda}[/tex] where,
E1 is the electric field strength at d1 E2 is the electric field strength at d2.By substituting the given values, we get:
1,568 n/c / 627 n/c = λ / 54.2^2 cm^2 / λ / d2^2
And solving for d2, we get:
d2 = [tex]\sqrt{(54.2^2 cm^2 * 627 n/c / 1,568 n/c)}[/tex]
= 34.8 cm
So, the electric field strength at a distance of 34.8 cm from the line charge is equal to 627 n/c.
Key points:
The electric field strength at a point is directly proportional to the charge density of the line charge and inversely proportional to the square of the distance from the line.We can use the formula E ∝ λ / d^2 to calculate the electric field strength at a given distance from the line charge.The electric field strength at a distance of 34.8 cm from the line charge is equal to 627 n/c.Learn more about electric field strength here:
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the quantity called mass density is the mass per unit volume of a substance. what are the mass densities in basic si units of the following objects? a. a 215 cm 3 solid with a mass of 0.0179 kg. b. 95 cm 3 of a liquid with a mass of 77 g
a. The mass density of the solid object can be calculated as follows:
mass density = mass / volume
mass density = 0.0179 kg / (215 cm^3)
mass density = 0.0179 kg / 0.0215 m^3
mass density = 8.27 kg/m^3
b. The mass density of the liquid can be calculated as follows:
mass density = mass / volume
mass density = 77 g / (95 cm^3)
mass density = 77 g / 0.0095 m^3
mass density = 8105 kg/m^3
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would the order of the ranking for the different forms of light listed in part a be different if you were ranking the frequency of the different forms of light (lowest to highest, left to right)? what if the ranking is done for the wavelengths of the different forms of light (shortest to longest, left to right)?
If you were to rank relative frequency of the various forms of light, the rankings for the ones in part A would be different. Due to the direct relationship between energy and frequency, the ranking on frequency would follow the same pattern.
Why is frequency important?The amount of waves which pass a fixed place in a unit of time is referred to as frequency in physics. It also indicates how many vibrations or cycles a body undergoing periodic motion makes in a given amount of time.
What frequency does sound have?The frequency of a sound pressure wave, also known as pitch, is indeed the amount of times per sec that this really repeats. The frequency of a drum beat is substantially lower than that of a whistle, while the frequency of a bullfrog cry is lower than that of a cricket. The number of oscillations decreases with decreasing frequency.
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A bird is flying due east. Its distance from a tall building is given by x(t) = 25.0m + (11.7m/s)t - (0.400m/s^3)t^3. What is the instantaneous velocity of the bird when t= 8.00 s?
As a result, the bird's instantaneous speed at t=8.00s is 2.1 m/s.
What is velocity, exactly?
A particle or object's motion with regard to time is expressed vectorially as its velocity. The recognized unit of velocity magnitude is the metre per second (m/s), which is frequently used to refer to as speed. A different way to express velocity magnitude is in centimeters per second (cm/s). When observed from a certain point of reference and measured according to a specified standard of time (for instance, 60 km/h northbound), velocity is the rate of change in direction of an item in motion.
What exactly is time and velocity?The velocity of an object is the distance it travels in a predetermined period of time. This word equation illustrates the relationship between space, time, and speed: The velocity is calculated by dividing the total distance traveled by the total journey time. In physics, velocity is a vectorial measure of a motion's speed and direction. The rate at which an object's position alters in relation to time or a reference frame is a more precise definition of velocity.
The equation x determines the bird's position[tex](t) = 25.0m + (11.7m/s)t - (0.400m/s^3)t^3.[/tex]
To determine the bird's instantaneous speed when t = 8.00 s,
[tex]\frac{d(x)}{dt} = 11.7 m/s - 3 \times 0.400 m/s^3 \times t^2[/tex]
Consequently, the bird's instantaneous speed when it flies = 8.00 s is:
d(x)/dt = 11.7 m/s - [tex]3 \times 0.400 m/s^3 \times (8.00 s)^2 = 11.7 m/s - 9.6 m/s = 2.1 m/s[/tex]
The bird is moving eastward, hence the magnitude of the velocity, which is 2.1 m/s in the positive x-direction, is eastward.
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in the solar panel system presented in the video, which of the following was necessary to generate usable electrical current for a home? in the solar panel system presented in the video, which of the following was necessary to generate usable electrical current for a home? electrical energy had to be stored in batteries for several days. dc power had to be converted to ac. the electrical energy had to be converted to nuclear energy. the heat of the sun had to be used to generate steam.
The heat of the sun had to be used to generate steam was necessary to generate usable electricity for a home.
Electronics known as solar cells are used in solar photovoltaic (PV) systems to convert sunlight directly into electricity. The PV cells on a solar panel capture the energy from the sun's rays as it shines on the panel. In reaction to an internal electrical field within the cell, this energy generates electrical charges that move, which results in the flow of electricity. Chemical reactions between solar photons and silicon crystals produce an electron flow. Nevertheless, because to the high cost and difficulty in obtaining silicon crystals of adequate quality, household solar systems are often built using equivalent but less expensive parts like copper, indium, gallium, and selenide (CIGS).
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a rock is thrown from the top of a 35 m building directly downwards with an initial speed of 5 m/s. at the same time, a cannon on the ground fires a projectile directly upwards at 30 m/s. a. at what height do the rock and the projectile pass each other? b. does the projectile make it to the top of the building? c. how much time does the rock take before falling to the ground?
The rock and the projectile pass each other at a height of 25.1 m, the projectile does make it to the top of the building and the rock takes 3.12 seconds before falling to the ground.
Given the height of building (h) = 35m
The initial speed of rock (u) = 5m/s
The speed of cannon on the ground (u1) = 30m/s
We know that from Newtons laws of motion h = ut + 1/2at^2 where t is the time taken and a is the acceleration, h is the height reached.
For the rock 35 = 5 x t + 1/2(-g)t^2 since going downwards a = -g
For the cannon 0 = 30 x t + 1/2(-g)t^2
Since they both meet at the same point then:
35 - 5 x t + 1/2(-g)t^2 = 30 x t + 1/2(-g)t^2
35 = 35 x t
t = 1s
So, it will take 1s for them to reach the same height.
Then the height they meet = 35 - 5 x 1 - 1/2 x 9.8 x 1^2 = 25.1m
(b) The maximum height reached by canon = v^2 - u^2 = 2as
The final speed = 0m/s such that u1^2 = 2 x g x s
s = 30 x 30/2 x 9.8 = 45.9m
The projectile reaches the top of the building.
(c) The time taken by the rock to reach the ground = t
0 = 35 - 5 x t + 1/2 x 9.8 x t^2
t = 3.12s
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a parallel-plate capacitor has circular plates of 8.20 cm radius and 1.30 mm separation. (a) calculate the capacitance. (b) find the charge for a potential difference of 120 v.
The capacitance is 7.80 x 10^-10 F and the charge for a potential difference of 120 v IS 9.36 x 10^-8 C
a) To calculate the capacitance of a parallel-plate capacitor, the formula is given by:
C = ε0 * A / d
where C is the capacitance, ε0 is the vacuum permittivity (8.854 x 10^-12 F/m), A is the area of each plate, and d is the separation between the plates.
For the given circular plates, the area of each plate can be calculated as:
A = π * r^2
where r is the radius of the plates.
Substituting the values:
A = π * (0.0820 m)^2 = 0.0064 m^2
d = 1.30 x 10^-3 m
C = ε0 * A / d = 8.854 x 10^-12 * 0.0064 / 1.30 x 10^-3 = 7.80 x 10^-10 F
b) To find the charge for a potential difference of 120 V, we can use the formula:
Q = C * V
where Q is the charge and V is the potential difference.
Substituting the values:
Q = C * V = 7.80 x 10^-10 * 120 = 9.36 x 10^-8 C
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most of the mass in the milky way galaxy is located
what is the magnitude of the force exerted on the block with mass 4 kg by the block with mass 6 kg? select all that apply
The magnitude of the force exerted on the block of mass 4kg by the block of mass 6kg is 8 Newtons.
Mass times acceleration, or F= m x a, equals force. This means that in order to move an object at the same speed as an object with smaller mass, a stronger force is required. The heavier block of mass 6kg here is being pushed by a horizontal force of 20 N. As both the blocks are in contact with each other, this means that both move with the same acceleration. Acceleration in terms of the above relation:
a = F/m
a = 20/ 6+4 = 2 [tex]m/s^{2}[/tex]
Now, we can calculate the force exerted by the 6kg block on 4kg block.
F = m × a
F = 4 × 2 = 8 N.
According to Newton's second law of motion, when a force is applied to an object, the object accelerates (i.e. rate of change of velocity). When a force is applied to a still object, the object experiences acceleration and begins to move in the direction of the force.
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Complete question is:
A 6.00 kg block is in contact with a 4.00 kg block on a horizontal frictionless surface. The 6.00 kg block is being pushed by a horizontal 20.0 N force. what is the magnitude of the force exerted on the block with mass 4 kg by the block with mass 6 kg?
solve for the velocity profile in a circular pipe (steady, fully-developed). what is the relationship between the centerline velocity and bulk velocity? what is the friction factor?
The friction coefficient is inversely related to velocity in laminar flow because the total head is proportional to the speed rather than velocity squared.
In a pipe, does pressure rise as velocity does?According to Bernoulli's Principle, pressure inside a flowing fluid falls as speed increases. The behaviour of an ideal fluid moving through a pipe or other confined tube, like a pump, is explained by the Bernoulli's Principle.
Why does speed rise in a pipe?According to the equation of continuity, when a liquid is flowing in a straight line, av = a constant, where an is the cross-sectional area and v is the flow velocity. When water moving through a wider pipe enters a narrower conduit, its area of cross-section reduces and its velocity rises.
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Baker Bill used 67 kilograms of flour on Monday. He used 48 kilograms of flour on Tuesday. How much did he use in all?
The total amount of flour he used in all is 115kg
What is Addition?One of the four fundamental operations in mathematics is addition, along with subtraction, multiplication, and division. When two whole numbers are added, the sum or total of those values is obtained.
Given that Baker Bill used 67 kilograms of flour on Monday. He used 48 kilograms of flour on Tuesday
We would add the kg of flour he used
This would be 67 + 48 = 115kg of flour
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what statements must be true about the jogger's motion? select all that apply. what statements must be true about the jogger's motion?select all that apply. the jogger's acceleration is increasing. the jogger's acceleration is decreasing. the jogger's speed is decreasing. the jogger's speed is increasing.
the jogger's acceleration is increasing statements must be true about the jogger's motion.
When is acceleration growing and positive?An item has positive acceleration when it is going faster than it was previously. Positive acceleration was demonstrated by the moving automobile in the first scenario. The acceleration is in the same direction as the car's motion since the vehicle is going ahead and accelerating.
The item will be moving faster if the acceleration is pointing in the same direction as the velocity. Additionally, the item will slow down if the acceleration is pointing in the opposite direction from the direction of the velocity.
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Analyze physical activities from which benefits can be derived. Name and describe three strength training exercises that can be perform and then discuss at least two health benefits of strength training.
Strength training exercises are physical activities that aim to increase muscle strength and endurance through resistance training. Some examples of strength training exercises include:
Examples of Strength training exercisesSquats: a compound exercise that works multiple muscle groups including the quadriceps, hamstrings, glutes, and lower back. The individual squats down, then stands back up, using their body weight or added weight for resistance.
Deadlifts: another compound exercise that targets multiple muscle groups including the hamstrings, glutes, back, and traps. The individual lifts a weight from the ground to a standing position, using proper form to avoid injury.
Two health benefits of strength training include:
Improved Physical Function: Strength training can help improve physical function, and increase muscle mass and bone density, which can reduce the risk of injury and improve balance and coordination.
Better Metabolic Health: Strength training can increase muscle mass, leading to increased metabolism, which can result in weight loss and improved insulin sensitivity, reducing the risk of type 2 diabetes and other metabolic disorders.
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a lunar eclipse can be seengroup of answer choicesonly by the observers in a 500 km wide path of totality.at the same time each year.by all observers on the nighttime side of earth.by all observers on the daylight side of earth.only at midnight.
"A lunar eclipse can be seen by all observers on the night-time side of earth."
Unlike solar eclipses, which require special glasses to observe and may only be seen briefly in a very narrow zone, a total lunar eclipse can persist for more than one hour and be viewed by anybody on Earth's night side.
The light appears reddish due to the Rayleigh scattering of blue light, the same reason sunrise and sunsets are more orange than during the day. A lunar eclipse can be seen from anyplace on the night side of Earth, unlike a solar eclipse, which can only be seen from a limited portion of the globe.
Lunar eclipses are technically visible from the entire night side of Earth, but during a penumbral eclipse, the dimming of the Moon's illumination is slight.
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Calculate the power required of a 1400kg car under the following circumstances a) The car climbs a 10° hill at a steady 80km/h and b) The car accelerates from 90 to 110km/h in 6.0s to pass another car on a level road. Assume the force of friction on the car is 700N in both parts of the problem.
(a) The power required for the car to climb the hill at steady speed is 15,555.56 W.
(b) The power required for the car to climb the hill at a changing speed is 19,444.44 W.
What is the power required?
The power required for the car the move the incline is calculated as follows;
When the speed is steady, the average speed is calculated as;
v = ( 80km/h + 80 km/h) / 2 = 80 km/h = 22.22 m/s
P = Fv
where;
F is the applied forcev is average speedP = ( 700 N x 22.22 m/s )
P = 15,555.56 W
When the speed changes from 90 km/h to 110 km/h, the average speed is calculated as;
v = ( 90 km/h + 110 km/h ) / 2 = 100 km/h = 27.78 m/s
P = ( 700 N x 27,78 m/s )
P = 19,444.44 W
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