An atom can be excited into a higher energy state by absorbing a photon
a. True
b. False
Indicate whether the statement is true or false
True
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Why don't most of the particles that make meteors actually reach the surface of Earth?
A) They are too small and burn up in the atmosphere. B) They reflect off the atmosphere and return to space. C) They are too small and are slowed to a stop in the atmosphere. D) They are deflected by the solar wind. E) They are deflected by the gravity of the Moon.
Almost all properties of other stars are described relative to our Sun
Indicate whether the statement is true or false
Twenty milliseconds is 0.020 s
a. True b. False Indicate whether the statement is true or false
A diffraction grating with 4000 lines/cm is illuminated by light from the sun. The solar spectrum is spread out on a white wall across the room. At what angle from the center line does blue light (400 nm) appear? At what angle from the center line does red light (650 nm) appear?