What happens to a given volume of water when heated from 0°C to 4°C?
a. density increases
c. density remains constant
b. density decreases
d. vaporizes
A
Physics & Space Science
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All magnetic forces are produced by
A) charges in motion. B) stationary charges. C) electromagnetic generators. D) permanent magnets. E) protons.
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How does the velocity of sound in air vary with the air temperature?
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The wavelength of a photon decreases when it is scattered from an electron
Indicate whether the statement is true or false
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