Most of the midsized jovian moons show heavy cratering
Indicate whether the statement is true or false
TRUE
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Entropy: On a cold winter day, the outside temperature is -20°C and the inside temperature is maintained at 20°C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW. What is the rate of increase of the entropy of the universe as a result of this heat flow?
A. 13 W/K B. 25 W/K C. 85 W/K D. 99 W/K E. 0 W/K
The two stars near one another are shown. Positions of one member are shown relative to the other star at different times. From plots like this one, astronomers conclude that 
a. the stars are in an elliptical orbit around one another.
b. the mass of the pair can be estimated.
c. one star is passing by the other never to return.
d. both the stars are in an elliptical orbit around one another.
Energy and Momentum: A 0.32-kg ball is moving horizontally at 30 m/s just before suddenly bouncing off a wall Just after the bounce, it is moving horizontally at 25 m/s but in the opposite direction.(a) What is the magnitude of the change in momentum of the ball during the bounce?(b) What percentage of the ball's original kinetic energy was lost in the collision?
Fill in the blank(s) with the appropriate word(s).
When a boxer is moving away from a punch, the force experienced is reduced because
A) momentum transfer is reduced. B) the time of contact is increased. C) the force is less effective. D) all of the above