A bowling ball size probe from a spaceship and a pebble size object land on a large asteroid that is far from any star. After a long period of time has passed, it is highly probable that the pebble and the probe
a. have each had the same change in temperature.
b. have each had the same change in volume.
c. are in thermal equilibrium with one another.
d. are not in thermal equilibrium with one another.
e. are in thermal equilibrium with one another, but are not at the same temperature.
c
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A supernova can occur when:
a) a massive star is on the Main Sequence b) the center of a 1 solar mass star stops burning Hydrogen in its core c) material from a companion star falls onto a white dwarf d) material from a red supergiant falls into a black hole e) a low mass star is on the Main Sequence
An object of radius R and moment of inertia I rolls down an incline of height H after starting from rest. Its total kinetic energy at the bottom of the incline:
a. is gR/I. b. is I/gH. c. is 0.5 Ig/H. d. cannot be found from the given information alone.
A proton moving at 5.0 × 104 m/s horizontally enters a region where a magnetic field of 0.12 T is present, directed vertically downward. What magnitude force acts on the proton due to this field? (e = 1.60 × 10-19 C)
What will be an ideal response?
If you swing a bucket of water fast enough in a vertical circle, at the highest point the water does not spill out. This happens because an outward force balances the pull of Earth on the water
A) True B) False