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A horizontal force of 150 N is used to push a 42.5 kg packing crate a distance of 6.90 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following.
(a) the work done by the 150 N forceJ
(b) the coefficient of kinetic friction between the crate and the surface
Determine magnitude of the force
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
Two organ pipes play the same fundamental note (i.e., the same lowest frequency). Pipe A is open at one end and closed at the other. Find the ratio of the lengths of pipe B to pipe A
A body starts from rest, moves in a straight line with constant acceleration, and covers a distance of 19.6 meters in 4 sec: what was the velocity in half the total time
A 70.0 football player is gliding across very smooth ice at 2.25 . He throws a 0.470kg football straight forward. What is the player's speed afterward if the ball is thrown at 16.5 relative to the ground
When point charges q1 = +7.0 ?C and q2 = +6.6 ?C are brought near each other, Determine the distance between the charges
two small beads having positive charges 3q and q are fixed at the opposite ends of a horizontal, insulating rod, extending from the origin to the point x=d. a third small chatged bead is free to slide on the rod. at what position is the third bead..
A microscope with a magnification of 1000 using a converging lens with a focal distance of 1.5 cm for the objective. The tube length given to you is 30 cm long. What should the focal distance of the eyepiece be if you want the eyes to be relaxed whil..
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. determine the initial mass of ice
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 20.0 cm on a spring with a force constant of 16.0 N/m. What is the weight of the bananas in newtons
Assume that your reaction time is 0.50 s and that your car brakes with constant acceleration. How far are you from the intersection when you begin to apply the brakes? Illustrate what acceleration will bring you to rest right at the intersection?
A 10.0 m rope of negligible mass connects two astronauts, each having a mass of 75.0 kg. find the initial angular momentum of the system
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