In the equation E = hf, the symbol h stands for
A) half-life.
B) momentum as it pertains to light.
C) energy per photon wavelength.
D) none of the above
Answer: D
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Why have most extrasolar planets detected with the transit method been found with orbits fairly close to their host stars?
A) They transit more frequently and are more likely to be detected in the short time we have been searching for them. B) More of the starlight is blocked by the planet when it transits the star. C) The wavelength shift of the star's spectrum is larger. D) The closer to a star, the hotter and therefore brighter the planet is. E) Planets that are close to a star are heated up and therefore larger.
Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel Prize in physics for their development of __________
Fill in the blank(s) with correct word
A system for which there are no outside effects is said to be ______________
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A 120 V-rms voltage is applied across a 6.0-?F capacitor and a 100-? resistor. If the frequency of the generator is 60 Hz, what is the rms value of the current in the circuit?
A) 0.26 A B) 0.36 A C) 0.46 A D) 0.56 A E) 0.76 A