Suppose you live at latitude 40°N. Based on the given right ascensions and declinations, which of the following stars is never visible in 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'
D) Alpha Centauri: RA = 14hr 40m, dec = -60°50'
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An object that is negatively charged will
a. repel a rubber rod stroked with fur. b. repel a glass rod stroked with silk. c. be polarized. d. none of these
A wood burning stove in a cabin in the woods has a surface area of 0.100 m2. If the stove radiates heat like a perfect blackbody radiator with a temperature of 150
then what is the energy per second that the stoves radiates?
A. 432 W B. 658 W C. 287 W D. 182 W E. 212 W
At divergent boundaries the dominant rock type is
A) basalt. B) granite. C) andesite. D) basalt, granite, and andesite.
A long linear charge distribution of charge density 1.35 nC/m is surrounded by a concentric cylindrical surface of length 1.60 m and radius 23.6 cm. What is the electric flux through the surface of the cylinder?
A. 0.00
B. 160 
C. 244
D. 280
E. 316