A satellite is powered by a small nuclear generator that puts out 20 W. How much matter is converted into energy over the 10 year life span of the generator?
a. 70 µg
c. 53 kg
b. 53 g
d. 53 µg
A
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A. an electric field strength. B. a dielectric constant. C. an electric potential difference. D. a capacitance E. an electric potential energy.
The gravitational force between two metal spheres in outer space is 2000 N. How large would the force be if the two spheres were four times as far apart?
A. 32,000 N B. 8000 N C. 500 N D. 125 N
The idea in fission-bomb design is to
A) form a supercritical mass from one or more subcritical masses. B) bring neutrons and subcritical uranium together. C) both of these D) neither of these
Since the big bang, but before now, a time existed where matter was not dominant
a. True b. False Indicate whether the statement is true or false