The central core inside an atom is the
a. electron
b. proton
c. neutron
d. nucleus
e. none of the above
D
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A 22
F capacitor is charged to 100 V. What is the energy stored by the capacitor?
A. 0.22 J B. 0.11 J C. 22 J D. 11 J E. 44 mJ
Heat Engines: The figure shows a pV diagram for a cycle of a heat engine for which QH = 59 J. What is the thermal efficiency of the engine?
A. 17% B. 34% C. 8.5% D. 14%
A quarterback takes the ball from the line of scrimmage, runs backward for 12 yards, then sideways parallel to the line of scrimmage for 18 yards. He then throws a 47-yard forward pass straight downfield perpendicular to the line of scrimmage. The receiver is tackled immediately. How far is the football displaced from its original position?
a. 39 yards b. 47 yards c. 31 yards d. 62 yards e. 66 yards
From 1979 to 1999 Pluto was closer to the sun than
a. Earth. b. Uranus. c. Neptune. d. Saturn. e. Jupiter