In vacuum, the components of an EM wave are 
and 
0. In what direction is this wave moving?
A. positive x-direction
B. negative x-direction
C. positive y-direction
D. negative y-direction
E. positive or negative z-direction
B. negative x-direction
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Rotational Kinetic Energy: While spinning down from 500 rpm to rest, a flywheel does 3.9 kJ of work. This flywheel is in the shape of a solid uniform disk of radius 1.2 m. What is the mass of this flywheel?
A. 4.0 kg B. 3.4 kg C. 4.6 kg D. 5.2 kg
______________ is defined as the angular measurement, in degrees, east or west of the Greenwich, or prime, meridian
a. The equator b. The International Date Line c. Latitude d. Longitude
The center of the Milky Way galaxy must be less than 1 AU in diameter and contain at least 4 million solar masses. Therefore, the center of the Milky Way galaxy must be a ____________________,
Fill in the blank(s) with correct word
Light from the sun passes through a converging lens and forms an image at
A. infinity. B. the center of curvature of the lens. C. the center of the lens. D. the focal point.