A blueberry pie will be a net absorber of energy when its temperature is
A) higher than its surroundings.
B) lower than its surroundings.
C) none of these
Answer: B
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Protons and neutrons are held together by the
A. strong nuclear force. B. weak nuclear force. C. electromagnetic force. D. gravitational force.
A radio station broadcasts at a frequency of 80 MHz. How far from the transmitter will this signal travel in 67 ms? (c = 3.0 × 108 m/s)
A) 60 × 106 m B) 67 m C) 40 km D) 80 km E) 20 × 106 m
A neutral ?0 (having mass 0.642 u) that is at rest decays into two gamma ray photons. What is the energy in MeV of each photon? (1 u = 931.5 MeV/c2)
A) 597 MeV B) 299 MeV C) 1190 MeV D) 149 MeV E) 199 MeV
Quantum tunneling occurs in
a. nuclear fusion. b. radioactive decay by emission of alpha particles. c. the scanning tunneling microscope. d. all of the above. e. only (b) and (c) above.