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Question: A person climbs 4 flights of stairs and then drops a block of mass m into the open stairwell. The block subsequently hits the ground floor with an impact speed v.
Part A: How many additional flights of stairs must the person climb so that an identical block hits the ground floor with an impact speed of 2v, double the original impact speed?
I want help to find how many additional flights of stairs must the person climb.
Suppose that at the top of its parabolic trajectory a projectile has a horizontal speed Uox. What is the radius of the circle
You are researching personal watercraft (PWC) safety. These vehicles have a well known safety issue in which the rider loses stearing control when there is no thrust from the engine.
There are four answers required for this question. A playground merry-go-round (like a disk) has a mass of 220 kg and a diameter of 4.4 meters is rotating at 30 rpm. What is the rotational kinetic energy of the merry-go-round after the children jum..
At a distance of 65 centimeter, a mosquito can barely be heard at a sound level of 4.9 dB. Evaluate what is the intensity of this sound
During a rockslide, a 760 kg rockslides from rest down a hillside that is 500 m long and 300 m high. How much energy is transferred to thermal energy
Think normally about Compton scattering and derive a formula for the kinetic energy imparted to the electron after the photon collision. Your expression must be in terms of the incident photon energy and the angle the photon scattered at.
A life preserver made of Styrofoam is designed to support a person weighing 575 N, with 80% of the body and 90% of the preserver submerged, Find the volume of Styrofoam required
A block with a weight of 3.0 N is at rest on a horizontalsurface. A 1.0 N upward force is applied to the block by meansof an attached vertical string. What are the (a) magnitude of and(b) direction of the force of the block on the horizontalsurface?
q1. a combined cycle gas turbine power plant can run at 50 percent efficiency. assume such a plant delivers 1 gw of
A ball is thrown horizontally from the top of a house 35 meter high. Obtain what is the time that the ball is in flight
a train with proper length of 200m is traveling at the speed of 120kmhr. an observer on the ground sees two lightening
A cue stick hits a cue ball with an average force of 23.8 N for a duration of 0.0246 s. how fast is it moving after being struck
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