When a one-megaton nuclear bomb is exploded, approximately 4.0 × 10^15 J of energy is released. How much mass would this represent in a mass-to-energy conversion? (c = 3.00 × 10^8 m/s)
a. 1.333 × 10^6 kg
b. 0.044 kg
c. 0.444 kg
d. 3.600 kg
e. 4.0 × 10^3 kg
b
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A ball thrown upward reaches its maximum height and then falls back. If air resistance is negligible, its acceleration is
A. the same at all points in the motion. B. less on the way up than on the way down. C. the same up and down but zero at the top. D. less on the way down than on the way up.
Which of the following must be occurring in order for a molecular cloud to collapse and form stars?
A) The inward pull of gravity must be stronger than the outward push of thermal pressure. B) The mass of the cloud must continually increase, thereby increasing the strength of gravity. C) The interior of the cloud must continually increase in temperature. D) The gas in the cloud must be supported by electron degeneracy pressure.
Which of the sources of error that you cited in question 5 do you think most affected your experiment? Why?
Which two things are the same for all observers according to the theory of relativity?
A) (1) the laws of nature and (2) the speed of light B) (1) the laws of nature and (2) the rate at which time proceeds C) (1) the speed of light and (2) the simultaneity of events D) (1) the rate at which time proceeds and (2) the simultaneity of events E) (1) the size of moving objects and (2) the mass of moving objects