On the vernal equinox, the Sun rises ________.
A. north of east
B. south of west
C. due east
D. south of east
E. due west
Answer: C
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When a star collapses to form a black hole, its mass
A) increases. B) decreases. C) remains the same.
A 104-? resistor is connected in series with a 14.7-µF capacitor and a 56-Hz, 136-V (rms) line voltage. If electrical energy costs 4.8¢ per kWh, about how much does it cost to leave this circuit connected for 24 hours?
a. 2¢ b. 46¢ c. 200¢ d. 5¢
A pressure of 10.0 mm Hg is measured using a constant-volume gas thermometer at a temperature of 50.0°C. What is the pressure (in mm Hg) at the zero-point temperature?
A. 31.8 B. 11.8 C. 8.45 D. 54.6 E. 68.3
Standing Sound Waves: An organ pipe closed at one end and open at the other end has two successive harmonics with frequencies of 2170 Hz and 2790 Hz. What is the fundamental frequency of the pipe?
Fill in the blank(s) with the appropriate word(s).