The San Andreas fault lies on the boundary of the Pacific plate and the ______________ plate
Fill in the blank(s) with correct word
North American
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Compare two 1.0 L gas samples - one of hydrogen (molecular mass 2.0 u) and one of oxygen (molecular mass 16.0 u). Each sample contains the same number of molecules, and is at the same pressure. What is the ratio of temperatures of the oxygen sample to the hydrogen sample?
A. 1/8
B. 
C. 8
D. 
E. 1
We say that Earth has an axis tilt of 23-1/2° because this is the angle between Earth's
A) rotation axis and a line perpendicular (vertical) to the ecliptic plane. B) rotation axis and the star Polaris. C) equator and rotation axis. D) rotation axis and north pole. E) rotation axis and magnetic axis.
A person uses a converging lens of focal length 5.0 cm as a magnifying glass
(a) What is the magnification if the person's eye is relaxed? (b) What is the maximum possible magnification?
A beam of "unpolarized" light
A. has a polarization direction that is constantly rotating. B. does not have any polarized waves. C. contains a single light wave with a fixed polarization direction. D. can be polarized by reflecting it from a flat surface.