During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done in the process?
A)
zero
B)
2.0 J
C)
5.0 J
D)
-5.0 J
E)
none of the above
D
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Which two bodies have substantial atmospheres?
a. Mercury and Venus b. Mercury and Earth c. Mercury and Earth’s Moon d. Earth and Venus e. Earth and Mars
An old red star moving along a random orbit around the bulge is a
A. Pop I star. B. Pop II star. C. Pop III star. D. Pop V star.
Mercury has a radius of about 0.38 Earth radii and a mass of only 0.055 Earth masses. Estimate the acceleration due to gravity on Mercury.
A. 1.45 m/s2 B. 3.81 m/s2 C. 26.3 m/s2 D. 69.1 m/s2
A box rests on the (horizontal) back of a truck. The coefficient of static friction between the box and the surface on which it rests is 0.24 . What maximum distance can the truck travel (starting from rest and moving horizontally with constant acceleration) in 3.0 s without having the box slide?
a. 14 m b. 11 m c. 19 m d. 24 m e. 29 m