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A lump of clay of mass 0.30 kg is thrown straight at a brick wall with a speed of 22 m/s. The time taken from when the clay first touches the wall until it has stopped deforming is 6 ms, after which the lump sticks to the wall. What is the average force on the wall (in N) during this collision?
The output voltage of a 63 W transformer is 15 V, and the input current is 17A. By what factor is the voltage multiplied? Assume 100% efficiency. . .
How to find out potential energy
A moving particle encounters an external electric field that decreases its kinetic energy from 9800 eV to 8350 eV as the particle moves from position A to position B. The electric potential at A is -43.0 V, and that at B is +23.0 V. Determine the ..
In special conditions, it is possible to measure the energy of a gamma-ray photon to 1 part in 10^15. For a photon energy of of 50 keV, estimate the maximum lifetime that could be determined by a direct measurement of the spread of the photon energy.
A speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. What is the speed at which the belt of the ramp is moving
A 99.5 kg horizontal circular platform rotates freely with no frictions about its center at an initial angular velocity of 1.77 rad/s. Find the angular velocity of the platform with its load
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
A ladder of length L = 2.6 m and mass m = 20 kg rests on a floor with coefficient of static friction %u03BCs = 0.54. What is the normal force the floor exerts on the ladder
Vector A has a magnitude of 7m and makes an angle of 58o with the positive x axis. Vector B also has a magnitude of 7 m and is directed along negative x axis. Enter your answers in distance then angle (in degrees).
A 72 skydiver can be modeled as a rectangular "box" with dimensions 25 cm*40cm* 1.8m . What is his terminal speed if he falls feet first
A light ray passes from water into air. The angle of incidence is 37o. Find the angle of refraction in the air
A 3.00-g bullet traveling horizontally at 413 m/s hits a 28.0-g wooden block, compute The speed of the block after the collision
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