If Scorpius is now prominent in the summer sky, in 13,000 years it will be best seen
A) in the autumn.
B) in the winter sky.
C) at the same season; the heavens do not change.
D) in the spring sky.
E) It will not be visible then at all. All of its stars will have vanished by then.
B
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Young's Modulus: When a 125-kg piece of equipment is hung from a steel wire of diameter 6.00 mm, it stretches the wire by 4.00 mm. If instead the wire had a diameter of 3.00 mm, but all else were the same, by what distance would the same equipment stretch the wire?
A. 16.0 mm B. 8.00 mm C. 4.00 mm D. 2.00 mm E. 1.00 mm
The equation that solves a problem is 
. The problem is:
A. What is the initial velocity of a car that goes from rest to 18 m/s in 3.0 s? B. What is the final velocity of a car that goes from rest to 18 m/s in 3.0 s? C. What is the initial velocity of a car that accelerates at 18 m/s for 3.0 s? D. What is the final velocity of a car that accelerates at 3.0 m/s2 over a 6.0 m distance? E. What is the final velocity of a car that accelerates at 3.0 m/s2 over a 3.0 m distance?
The heat of fusion for gold at 1,063
is 66.6 kJ/kg and the specific heat of gold is 0.128 kJ/kg 
What is the energy needed to melt 100 grams of gold starting at 0
A. 20.3 kJ B. 17.8 kJ C. 12.3 kJ D. 9.50 kJ E. 7.50 kJ
Why does the temperature of the gas between galaxies in galaxy clusters tell us about the mass of the cluster?
A) The temperature tells us the average speeds of the gas particles, which are held in the cluster by gravity, so we can use these speeds to determine the cluster mass. B) Temperature is always directly related to mass, which is why massive objects are always hotter than less massive objects. C) The temperature of the gas tells us the gas density, so we can use the density to determine the cluster's mass. D) The question is nonsense; gas temperature cannot possibly tell us anything about mass.