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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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
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
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
At divergent boundaries the dominant rock type is
A) basalt. B) granite. C) andesite. D) basalt, granite, and andesite.