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a child makes a ramp to push his toy dump truck up to his sand box.If he uses 5 newtons of force to push his 12 newton truck up the ramp, what is the mechanical advantage of his ramp?
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
A cart of mass M = 1.6 kg can roll without friction on the level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.7 kg.
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
A uniform disk of mass M=12.0 kg and radius R=.75 m is free to rotate about a frictionless axle through its center. compute the roational kinetic energy
A ball is thrown straight upward. At 5.50 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
What is the target's speed just after the bullet emerges.What is the velocity v of the smaller fish before lunch.
A charged particle (m = 8.05 g, q = - 7.68 µC) localized at point A has a speed of 0.88 m/s. What is the kinetic energy of the particle when reach B
During the spin cycle of your clothes washer, the tub rotates at a steady angular velocity of 32.7 rad/s. Find the angular displacement of the tub
An olive is at the bottom of a glass of alcohol (n = 1.36), 5.10 cm beneath the surface. what is the apparent depth d' of the olive
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 192m/s and a frequency of 200Hz. Calculate the maximum transverse velocity of the string at this point
Computing the kinetic energy, takeoff speed, and kinetic energy per kilogram.
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, Find the acceleration of the proton
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