________ is the largest of the terrestrial planets.
A. Venus
B. Jupiter
C. Mars
D. Mercury
E. Earth
Answer: E
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A certain organ pipe is open at both ends. Another pipe of the same length is open at one end and closed at the other. Which will have the lower pitch?
A. The pipe open at both ends. B. The pipe closed at one end. C. Both will have the same pitch. D. It depends on the pipes’ diameters.
Suppose you live at latitude 40°N? Based on the given right ascensions and declinations, which of the following stars passes closest to your zenith on its daily path through your sky?
A) Spica: RA = 13hr 25m, dec = -11°09' B) Deneb: RA = 20hr 41m, dec = +45°16' C) Sirius: RA = 6hr 45m, dec = -16°42' D) Alpha Centauri: RA = 14hr 40m, dec = -60°50' E) Vega: RA = 18hr 37m, dec = +38°47'
The visible lines from hydrogen are all members of the
a. Lyman series. b. Balmer series. c. Paschen series. d. Brackett series.
A flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s. If the coil has a total resistance of 0.40 W, what is the magnitude of the induced current?
a. 0.70 A b. 0.60 A c. 0.50 A d. 0.80 A e. 0.20 A