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The Concorde is 62 m long when its temperature is 23 degrees C. In-flight, the outer skin of this supersonic aircraft can reach 105degrees C due to air friction. The coefficient of linear expansion of the skin is 2.0 x 10^-5 (C degrees)^-1. Find the amount by which the Concorde expands.
a. 0.19 m
b. 0.13 m
c. 0.070 m
d. 0.16 m
e. 0.10 m
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On a frictionless air track, a 0.140 kg glider moving at 1.35 m/s to the right collides with and sticks to a stationary 0.245 kg glider. What must be the net momentum of this system after the collision
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A classroom slide projector projects an enlarged (55 times taller) image of a 24 mm high photographic film onto a screen located 10 meters from the projector. What focal length lens (cm) does slide projector require to produce a sharply focus imag..
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A man pushes a lawn mower on a level lawn with a force of 186 N. If 39% of this force is directed downward, how much time is spent in pushing the mower this distance
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