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The motor in a refrigerator has a power output of 200W. If the freezing compartment is at 270k and the outside air is at 300K, assuming ideal efficiency, what minimum amount of heat that can be extracted from the freezing compartment in 10 min?
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the amplitude of vibration
In the drawing the head-up display is designed so that the distance between the digital readout device and virtual image 1 is 1.60 m. Find the focal length of the concave mirror
During an acceleration, the angular speed of an engine increases from 850 rpm to 2750 rpm in 4.4 s. What is the average angular acceleration of the engine
Two small silver spheres, each with a mass of 12.0 g, are separated by 1.00 m. Calculate the fraction of the electrons in one sphere
question waves on a stick a flexible stick 2.0 m long is not fixed in any way and is free to vibrate. make clear
Two tugboats pull a disabled supertanker. Each tug exerts a construct force of 2.00 x 10^6 N, What is the total work done by the two tugboats on the supertanker
A train moving with constant velocity travels 180 m north in 14 s and an undetermined distance to the west. How far west has the train traveled in this time
assuming each galaxy contains the mass of 200 billion suns and there are 200 billion such galaxies, what is the schwarzschild radius of the universe
A 0.0227 m diameter coin rolls up a 13.0? inclined plane. The coin starts with an initial angular speed of 46.4 rad/s, How much vertical height does it gain before it stops rollin
What is the increase in their temperature per 100 m of travel
A horizontal bar of negligible weight has a 55.10 lb weight hanging from the left end and a 72.0 lb weight hanging from the right end. The bar is seen to balance 97.50 in from the left end. Find the length of bar.
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
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