Kepler's Laws: If NASA wants to put a satellite in a circular orbit around the sun so it will make 2.0 orbits per year, at what distance (in astronomical units, AU) from the sun should that satellite orbit? The earth's orbit is 1.0 AU from the sun.
A. 7.6 AU
B. 0.63 AU
C. 0.50 AU
D. 2.0 AU
E. 0.71 AU
Answer: B
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Which of the following divisions of time cannot be changed by a human decision?
a. 60 minutes in an hour b. 365.2422 days in a year c. 7 days in a week d. 24 hours in a day
Conversion of Units: The peak of Mt. Everest, at 10,900 m, is the highest point above sea level in the world. What is its elevation in miles? (1.00 m = 3.281 ft)
A. 17.6 mi B. 0.630 mi C. 6.77 mi D. 6.20 mi E. 67.1 mi
You can reason that the time required for a ball to fall is related to the height from which it falls and to the acceleration due to gravity. Time is measured in seconds, height in meters, and gravitational acceleration. Using dimensional analysis, determine how the time to fall from height h compares to the time required to fall from height 2h.
A. It takes 1/2 as long
B. It takes 4 times as long
C. It takes 
times as long
D. It takes 2 times as long
E. It takes 
as long
F. It takes 1/4 as long
What is the equivalent resistance between points a and b?
a.
14 ?
b.
8.0 ?
c.
6.0 ?
d.
25 ?
e.
40 ?