In beta-minus decay, which neutrino is emitted?
A. the electron neutrino
B. the electron antineutrino
C. the muon neutrino
D. the muon antineutrino
E. the tau neutrino
B. the electron antineutrino
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Which of these has the greatest number of protons in its nucleus?
A) gold B) mercury C) lead D) silver
This image shows the velocity of gas moving toward or away from us on the Sun's surface, as measured through Doppler shifts; the key indicates the measured velocity, with negative velocities indicating gas moving toward us and positive velocities away from us. Based on this map, about how fast is the sun rotating at its equator? (Hint: determine the speed at which equatorial gas is moving toward us on one side of the equator and away from us on the other.)
A) about 200 m/s B) about 2000 m/s C) about 20,000 m/s D) The Sun is not rotating.
Water at 4°C will expand when it is slightly
A) cooled. B) warmed. C) both of these D) none of the above
In 1921, Stern and Gerlach performed an experiment that first demonstrated
a. orbital angular momentum quantization b. energy quantization c. space quantization d. magnetic orbital quantization e. that particles behave like waves