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A 200 kilograms cart is pushed up an incline at constant velocity. Find how much work does the pushing force do in moving the cart up 1.5 meter from the starting point, friction is negligible?
a cat dozes on a stationary merry-go-round at a radius of 5.4 m from the center of the ride. then the operator turns on
consider a crate at rest on a factory floor. As the pair of workers start to lift it, What happens to the support force acting on the workers feet
As you ride your 14-kg bicycle on level ground you do some work against a 30N force of air resistance if your mass is 65-kg.What is power you apply to maintain a velocity of 25-km`.a-on level ground b-going up a 5degrees slope?(remember it's a num..
X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. Find (a) the Compton shift at this angle, (b) the energy of the scattered x-ray, and (c) the energ..
two equally charged insulating balls each weigh 0.40 g and hang from a common point by identical threads 45 cm long.
The current in a series circuit is 22.0 A. When an additional 12.0-? resistor is inserted in series, the current drops to 11.0 A. What is the resistance in the original circuit
Equal amounts of heat are added to equal masses of iron andsilver at the same initial temperature. Which metal will have the higher final temperature?
the image of a tree just covers the length of a plane mirror 3.60cmnbsptall when the mirror is held 38.0cmnbspfrom the
600g model rocket is on a cart that is rolling to the right at a speed of 4.5m/s. At what horizontal distance left of the loop should you launch
Two 1.0 g beads, each charged to +5.0 nC, are 2.0 cm apart. A 2.0 g bead charged to -10 nC is exactly halfway between them. What are the speeds of the positive beads
suppose the specific heats of milk and coffe are the same as that of water, and neblect the specific heat of the container.
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. how fast was the skier going
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