An absorption spectrum is also called a bright-line spectrum
a. True
b. False
Indicate whether the statement is true or false
False
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A. The divergence is positive. B. The divergence is negative. C. The divergence is zero.
The energy from the accretion disk around a black hole would show gravitational red shift due to its immense gravity and tidal distortion of space there
Indicate whether the statement is true or false
All real engines are less efficient than the Carnot engine because
a. they do not operate through the Otto cycle. b. they do not operate through a reversible cycle. c. the working substance does not maintain a constant volume through the cycle. d. the working substance does not maintain a constant pressure through the cycle. e. the working substance does not maintain a constant temperature through the cycle.
Velocity Addition: A spaceship is moving in a straight line away from Earth at 0.80c, measured relative to Earth. It launches a missile that moves away from the spaceship in the forward direction at 0.60c, relative to the ship. Relative to Earth, what is the speed of this missile?
A. greater than 0.80c but less than c B. 1.4 c C. c D. greater than c but less than 1.4c