The graph below plots the escape velocity of several solar system objects along the vertical axis and the surface temperature along the horizontal axis. The lines plotted in the figure are the speeds of the fastest gas particles as a function of temperature for various gases. Which of the objects in this diagram has the greatest surface temperature?
a.
Ganymede
b.
Pluto
c.
Titan
d.
Triton
e.
Miranda
A
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A 1800 kg car moving at 20 m/s hits an initially uncompressed spring with a spring constant of 
The maximum compression of the spring is
A. 0.40 m. B. 0.60 m. C. 0.80 m. D. 1.0 m. E. 1.2 m.
A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at which the temperature is 22.0°C and the pressure is 101 kPa The balloon rises to a location where the temperature is -30.0°C and the pressure is 20.0 kPa. If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon? Assume that in both cases the hydrogen gas is in thermal equilibrium with the outside air.
A) 14.0 m3 B) 2.38 m3 C) 49.9 m3 D) 82.6 m3 E) 4.16 m3
Compared to our Sun, a typical white dwarf has
A) about the same mass and density. B) about the same mass and a million times higher density. C) a larger mass and a 100 times lower density. D) a smaller mass and half the density. E) a smaller mass and twice the density.
You have three dice and you roll them simultaneously. What is the chance that all three dice will end up with the same value?
1.1/6 2.3/6 3.1/36 4.1/216