A spectrum that displays no energy except at very specific wavelengths where intense radiation is observed is a(n) ____ spectrum
a. absorption
b. emission
c. continuous
d. Doppler
e. ionization
b
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Assuming that features you see on Mars are similar to features found on Earth, what would a casual inspection of the interactive photo of Mars lead you to suspect about water on Mars?
A. Abundant surface water is found in large, brownish pools inside craters. B. There are numerous small streams flowing with water. C. Surface water only exists as frozen ice. D. No surface water currently exists in any form.
The Doppler Effect is a phenomenon that allows one to measure an object's
A) temperature. B) radius. C) line-of-sight speed. D) chemical composition.
Describe how Einstein used the photoelectric effect to support the particle theory of light and photons
What will be an ideal response?
The frictional force, due to air resistance, acting on an object is always
A. in the direction of the object's motion. B. in the upward direction. C. greater than the net force. D. smaller than object's weight. E. in the opposite direction to the object's motion.