How much current is drawn by a 1500 W appliance operating at 120V?
a. 2 b. 8 c. 12 d. 15 e. 24 amps
c
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Galileo observed satellites orbiting which planet as indirect confirmation of Earth's non-uniqueness?
What will be an ideal response?
The critical angle for glass in air if the glass has index of refraction 1.50 is
A) 41.8°. B) 85.9°. C) 56.3°. D) 90°. E) 48.1°.
Why is the radiation so intense in the region that traces Io's orbit around Jupiter (the Io torus)?
A) The region is full of gases that become ionized after they are released from volcanoes on Io. B) Io's gravity allows this region to capture huge numbers of charged particles from the solar wind. C) An orbital resonance between Io, Europa, and Ganymede makes the radiation intense. D) Jupiter's strong magnetic field makes the radiation intense everywhere, and the region around Io is no different than any other region.
Magma that solidifies before reaching Earth's surface is called
A) intrusive igneous rock. B) plutonic rock. C) a pluton. D) all of the above.