An unpolarized light wave is traveling along positive X-axis. The electric field vector in the beam vibrates in the direction of
A. Positive Y-axis definitely
B. Negative X-axis
C. Positive X-axis
D. Y or Z-axis
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What are the phases shown in a and d called?

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?