Which of the following waves exhibit interference?
A. Only water
B. Only sound
C. Sound, water, and light
D. Only light
E. None of these choices are correct
Answer: C
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In the context of the mass-luminosity relation, a star with a mass of 2 solar masses on the main sequence would have a luminosity of approximately _____ solar luminosities
A) 2.5 B) 4 C) 11 D) 0.5
To what types of electrically charged objects does Coulomb's law apply?
A) only pointlike particles B) any symmetric objects C) it applies to all such objects D) only pointlike particles and objects that can be treated as particles E) it applies to all such objects as long as they are not moving
Based on discoveries to date, which of the following conclusions is justified?
A) Planetary systems are common and planets similar in size to Earth are also common. B) Although planetary systems are common, few resemble ours with terrestrial planets near the Sun and jovian planets far from the Sun. C) Planets are common, but planets as small as Earth are extremely rare. D) Most stars have one or more terrestrial planets orbiting within their habitable zones.
In a Compton scattering experiment, the scattered photon has a wavelength of 6.55 pm. If the scattering angle is 
what is the energy of the incident photon?
A. 1.43 MeV B. 218 keV C. 380 keV D. 117 keV E. 66.3 keV