The radial velocity of a star's motion in space can also broaden its spectral lines
Indicate whether the statement is true or false
FALSE
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The wavelength of a certain portion of an electromagnetic wave is 314 nm. What is its frequency and classification?
A) 9.55 × 1014 Hz, ultraviolet B) 9.55 × 1014 Hz, X-ray C) 8.44 × 1015 Hz, X-ray D) 9.55 × 1015 Hz, ultraviolet
A mass of 0.40 kg, hanging from a spring with a spring constant of 160 N/m, is set into an up-and-down simple harmonic motion. What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.10 m
a. zero c. 2.0 m/s b. 1.4 m/s d. 3.4 m/s
The H-R diagram of a young star cluster shows
a. that high-mass stars have not yet reached the main sequence yet. b. that low-mass stars have not yet reached the main sequence yet. c. mainly giant stars. d. no stars since none have reached the main sequence yet.
What is the velocity of the wave in the above figure?
The following figure is a graph of a wave at a fixed position.
The following figure is a graph of the same wave at a fixed time.
A. 150 m/s
B. 200 m/s
C. 250 m/s
D. 300 m/s
E. 450 m/s