Which of the following is true of Venus?
A) Its atmosphere is transparent to visible light.
B) Its atmosphere is transparent to infrared radiation.
C) Its atmosphere is as dense as that of Earth.
D) Its atmosphere is mostly composed of carbon dioxide.
D
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Nuclear Binding Energy: The neutral helium atom, 
He, has a mass of 4.002603 u, a neutron has a mass of 1.008665 u, a proton has a mass of 1.007277 u, and a neutral hydrogen atom has a mass of 1.007825 u. What is the binding energy of the 
He nucleus? (1 u = 931.5 MeV/c2)
A. 20.5 MeV B. 22.4 MeV C. 27.3 MeV D. 28.3 MeV E. 23.4 MeV
It is more difficult to measure the coefficient of volume expansion of a liquid than that of a solid because:
A. no relation exists between linear and volume expansion coefficients B. a liquid tends to evaporate C. a liquid expands too much when heated D. a liquid expands too little when heated E. the containing vessel also expands
A 1 mF, a 2 mF, and a 3 mF capacitor are connected in parallel, the combination being connected across a 9 volt battery
(a) Which capacitor has the greatest charge? (b) Which capacitor has the greatest voltage?
The value of the momentum of a system is the same at a later time as at an earlier time if there are no
a. collisions between particles within the system. b. inelastic collisions between particles within the system. c. changes of momentum of individual particles within the system. d. internal forces acting between particles within the system. e. external forces acting on particles of the system.