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A child whose mass is 40 kg obstruction is on the 3rd floor of the building at a height of 15 m above the ground. Calculate the potential energy of the child if the child is now located on the 5th floor and is located 25 m from the ground!
Kim says that she was less than 10 feet away from the president when she took a picture of him with her 52 millimeter focal length camera lens. Find how close was Kim to the president when she took the picture
A converging lens with a focal length of 12.9 cm and a diverging lens are placed 25.5 cm apart, with the converging lens on the left. What is the focal length of the diverging lens
How much work did movers do (horizontally) pushing a 150-{rm kg} crate 10.6 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
As a coffee enthusiast you wish to keep your coffee as hot as possible for as long as possible. You wish to find the rate of heat loss of a typical coffee mug. Assume the mug to be a cylinder which has a lid made out of the same material as the re..
A 3000 kg truck is heading east at 80 mph. A 1000 kg car is heading north at 40 mph. They collide and stick togther. What is the velocity and direction of the car/truck
An air track glider, 8.00 cm long, blocks light as it goes through a photocell gate. What is the acceleration (assumed constant) of the glider along the track
the acceleration of gravity at the surface of moon is 1.6 m/s^2. A 5.0 kg stone thrown upward on moon reaches a height of 20m, find its intial velocity
A thin spherical shell has a radius of 1.80 m. An applied torque of 1060 N m imparts to the shell an angular acceleration equal to 5.70 rad/s2 about an axis through the center of the shell
A block of mass 0.1 kg is attached to a spring of spring constant 11 N/m on a frictionless track. The block moves in simple harmonic motion with amplitude 0.13 m. While passing through the equilibrium point from left to right, the block is struck ..
A satellite has a mass of 99 kg and is located at 2.0 106 m above the surface of Earth. compute the potential energy associated with the satellite
An 83.6kg person with density 1055 kg/m^3 stands on a scale while completely submerged in water. what does the scale read
During the collision with the ground, he comes to rest in a time of .101 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. Elucidate from what height did the student f..
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