The y-component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos[kx - (2.20 × 1014 rad/s)t]. (c = 3.0 x 108 m/s)
(a) What is the largest that the x-component of the wave can be?
(b) What is the largest that the z-component of the wave can be?
(a) zero (b) 1.25 µT
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A) 105 J B) 130 J C) 780 J D) 520 J E) 340 J
Detailed mapping of the ocean floors revealed
A) huge mountain ranges beneath the oceans. B) deep trenches near some of the continents. C) that the oceans are equally deep at all locations. D) huge mountain ranges on the ocean floor, and deep trenches near some of the continents.
There is as much mass in the voids between the stars as in the stars themselves
Indicate whether the statement is true or false
Which of the following is not a strong argument for the theory that some large elliptical galaxies formed as the result of galaxy collisions?
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