In the metric mks system of units, the letter k stands for ______________
Fill in the blank(s) with correct word
kilogram
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An object is 12.0 cm from the surface of a spherical Christmas tree ornament that is 10.0 cm in diameter. What is the magnification of the image?
a. -0.500 c. +0.172 b. -0.200 d. +0.143
Selena states that proves that entropy has a definite value at the beginning and end of an adiabatic free expansion. Ron says
, where W is the number of microstates of a given macrostate. Which one, if either, is correct?
A.
B.
C.
D.
E.
By what factor is the intensity of sound at a rock concert louder than that of a whisper when the two intensity levels are 120 dB and 20 dB respectively?
a. 1012 b. 108 c. 106 d. 1010 e. 1011
Differential rotation of the sun is
a. heating in the chromosphere and corona that makes them hotter than the photosphere. b. the magnetic dynamo inside the sun. c. the equatorial regions of the sun rotating more rapidly than the polar regions. d. the origin (and subsequent disappearance of) sunspots first near the poles then closer to the sun's equator as the sunspot cycle progresses. e. the rotation of the sun's southern and northern hemispheres in opposite directions.