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You drop a rock from rest from the top of a tall building. It takes 0.117 s for the rock to pass by a 2.10-m high window. How far from the top of the building is the top of the window? (Express your answer to three significant figures.)
A child launches an air powered toy rocket up into the air giving it an initial velocity of 6m/s at an angle of 80degree above the horizontal. How long after the rocket is launched does it take for the rocket to hit the ground
consider a tank containing 40.0 kg of water. neglecting the heat capacity of the tank how much heat in joules would be
Physicians perform needle biopsies to sample tissue from internal organs. A spring-loaded gun shoots a hollow needle into the tissue; extracting the needle brings out the tissue core. Find the impulse imparted by the tissue
A 1.5kg block intially at rest at the top of a 3m incline with a slope of 30degrees begins to slide down the incline. How fast is the block moving midway along the inlcine
Two protons are released from rest, one from location 1 and another from location 2. When these two protons reach location 3,, what is the electric potential at location 3
In the Compton effect, an X-ray photon of wavelength 0.31 nm is incident on a stationary electron. What is the wavelength of the scattered photon
A plastic light pipe has an index of refraction of 1.44. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
A duck flying horizontally due north at 14.8 m/s passes over Atlanta, What is the magnetic force acting on the duck
I would assume there should be a linear force on the magnet in the other direction, but the magnetic field caused by the current in the wire should only create a torque on the magnet. So how is momentum conserved?
question a force of 75n is applied horizontally to a box of mass 10kg moving with an initial speed of 4ms on a level
At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 21m/s from the top of a 300m building. How much earlier does the thrown rock strike the ground? Neglect air resistance.
A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
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