Directly above Earth's equator lies the ________ in the sky.
A. Celestial equator
B. ecliptic
C. North Celestial Pole
D. South Celestial Pole
Answer: A
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The maximum mass of a white dwarf is ____________________ solar masses
Fill in the blank(s) with correct word
A 2.00 kg pendulum bob on a string 1.50 m long, is released with a velocity of 3.00 m/s when the support string makes an angle of 45.0 degrees with the vertical. What is the tension in the string at the bottom of the swing?
A. 53.5 N B. 49.8 N C. 43.1 N D. 37.5 N E. 30.2 N
The greenhouse effect is the
A) generation of heat in the outer layers of the Earth's atmosphere due to absorption of short wavelength radiation B) generation of heat in the ozone layer due to the absorption of ultraviolet radiation C) release of heat by volcanism along tectonic plate boundaries D) trapping of infrared radiation from the Earth's surface by greenhouse gases like carbon dioxide, methane, and water
Two nuclei may have equal Z, but different A, because they contain
a. equal numbers of protons and neutrons. b. equal numbers of protons but different numbers of neutrons. c. different numbers of protons but equal numbers of neutrons. d. different numbers of protons and neutrons. e. electrons as well as neutrons.