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A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.28. Its velocity at point A is 8.0 m/s and at point B is 4.8 m/s. Use the impulse-momentum the orem to find how long the sled takes to travel from A to B.
Two waves of equal amplitude A meet on a string and make a new wave of amplitude 1.5A. what is the smallest relative phase between the waves to make this possible?
suppose a high voltage dc generator produces a potential difference of 75. kv across an air gap distance of 1.25 cm.
Artificial gravity is a must for any space station if humans are to live there for any extended length of time. Without artificial gravity, human growth is stunted and biological functions break down. An effective way to create artificial gravity ..
a 2--tall object is 26 to the left of a lens with a focal length of 13 . a second lens with a focal length of -5 is 37
an asteroid fragment wandering through space is often referred to as a meteoroid. when entering earths atmosphere some
A laser with wavelength 650 nm is incident on a single slit with width 10 mm. How far apart will the first dark bands on either side of the central maximum be
A bowling ball (mass = 7.2 kg, radius = 0.10 m) and a billiard ball (mass = 0.42 kg, radius = 0.028 m) may each be treated asuniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
The surface area of an unclothed person is 1.55 m2, and his skin temperature is 33.0°C. At what rate is energy radiated by the body
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
An object of mass m is moving at a velocity u. This object collides with another object of mass m, find the final velocity for both the classical and relativistic case
A 60 cm long steel rod with a diameter of 4 cm is mated to a 40 cm long Cu rod with the same diameter. the unmated end of the steel rod( not at the interface) is connected to a 140 degrees C heat source, while the far end of the Cu( not at the int..
A 3.00-g bullet, traveling horizontally with a velocity of magnitude 370 m/s, is fired into a wooden block with mass 0.800 kg, What is the decrease in kinetic energy of the bullet
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