The bombs used against Japan were
A) two plutonium bombs.
B) two fusion bombs.
C) two uranium bombs.
D) an fission bomb and a fusion bomb.
E) a uranium bomb and a plutonium bomb.
E
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The atmospheric condition at a particular location at a particular moment in time is called
A) weather. B) climate. C) average temperature. D) average precipitation level.
A horizontal force is applied to a 2.0 kg box. The box starts from rest, moves a horizontal distance of 12.0 meters, and obtains a velocity of 8.0 m/s. The change in the kinetic energy is
A. 32 J. B. 48 J. C. 50 J. D. 58 J. E. 64 J.
Alien astronomers are using the radial-velocity method to look for planets around our Sun. Which planet are they most likely to detect first?
A. Jupiter B. Neptune C. Mercury D. Earth
Excited atomic states that last for a relatively long time are called
A. laser states. B. metastable states. C. amplification states. D. radiation states. E. cascading states.