The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil 1 kg of water is __________ times the amount of heat required to melt 1 kg of ice
Fill in the blank(s) with correct word
ten
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Which of these is emitted when an electron falls from a higher to lower orbital?
A) a photon B) a positron C) a neutrino D) a graviton E) another electron
___________ is (are) observed when light from a distant quasar travels past a massive galaxy between us and the quasar, and this light is focused to form two or more images of the same quasar
a. A double-lobed radio galaxy b. Superluminal expansion c. The gravitational lens effect d. A blazar e. Gravitational waves
Ordinary matter in the form stars and planet makes up approximately what proportion of the total mass and energy in the universe?
A) about 70 percent B) a few percent C) about 25 percent D) nearly a 100 percent
If you connect two identical storage batteries together in parallel, and place them in a circuit, the combination will provide
A) twice the voltage and twice the total charge that one battery would. B) twice the voltage and the same total charge that one battery would. C) the same voltage and twice the total charge that one battery would. D) half the voltage and half the total charge that one battery would. E) half the voltage and twice the total charge that one battery would.