If the temperature of a wire increases, its resistance
a. increases
b. decreases
c. does not change
d. will increase or decrease depending on the composition
e. will change in a way that can not be determined
A
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Europa may have a subsurface ocean of liquid water due to
A) the insulating properties of its icy surface B) tidal heating from Jupiter and the other Galilean moons C) internal heat left over from its formation D) tidal heating from the Sun
If the acceleration vector of an object is directed anti-parallel to the velocity vector, then
A) the object is speeding up. B) the object is slowing down. C) the object is turning. D) the object is at rest. E) this situation would not be physically possible.
Is the decay ?0 ? ?+ + v? allowed?
A) No, because mass is created. B) Yes, because it conserves energy. C) No, because charge is not conserved. D) No, because lepton number is not conserved.
Based on what we know about our own solar system, the discovery of hot Jupiters came as a surprise to scientists because these planets are __________.
Fill in the blank(s) with the appropriate word(s).