The most striking and largest valley in the solar system is
A) the Grand Canyon in Arizona.
B) Gwenivere on Venus.
C) the Discovery Scarp of Mercury.
D) Valles Marineris on Mars.
E) Valhalla on Callisto.
D
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Why is it easier to locate meteorites in Antarctica than anywhere else on Earth? a. Antarctica is an easy location for humans to access
b. More scientists are in the area to find meteorites. c. When meteorites land, they melt a small crater on the ice. d. Meteorites are easy to detect on top of the ice where there are no Earth rocks. e. Meteorites fall most often through the ozone hole above the South Pole.
If H equals 70 km/s/Mpc, then a galaxy with a radial velocity of 2100 km/s has a distance of approximately
a. 2170 Mpc. b. 2030 Mpc. c. 30 Mpc. d. 0.03 Mpc. e. 147,000 Mpc.
A platinum wire is used to determine the melting point of indium. The resistance of the platinum wire is 2.000 ? at 20°C and increases to 3.072 ? as indium starts to melt
What is the melting point of indium? (The temperature coefficient of resistivity for platinum is 3.9 × 10-3/C°.) A) 117°C B) 137°C C) 157°C D) 235°C E) 351°C
In a given LC resonant circuit,
A) the stored electric field energy is greater than the stored magnetic field energy. B) the stored electric field energy is less than the stored magnetic field energy. C) the stored electric field energy is equal to the stored magnetic field energy. D) all of the given answers are possible.