If Earth's mass somehow doubles with no change in its size, and your mass remains the same, your weight
A) also doubles.
B) is quadrupled.
C) remains the same.
Answer: A
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For a blend of long-chain molecules, if the enthalpy of mixing is positive, it is expected that the polymers should mix in the liquid at all temperatures above the melting temperature. _____________
Fill in the blank(s) with the appropriate word(s).
Even relatively small astronomical telescopes are ordinarily not used for terrestrial observation because
a. their images are too bright. b. their images are too dim. c. their images are inverted. d. their images are not in color.
Unpolarized light is passed through polarizer 1 . The light then goes though polarizer 2 with its plane of polarization at 60.0° to that of polarizer 1 . What fraction of the intensity of the original light gets though the second polarizer?
a. 0.125 c. 0.707 b. 0.250 d. 0.500
An object that appears to be smaller on the sky will tend to be
A: closer than one that appears larger. B: farther away than one that appears larger. C: there will be no trend.