Light is emitted by hydrogen atoms in the visible range for a hydrogen atom. Its wavelength is 656 nm. What value of n is associated with the light? (RH = 1.097 × 10^7 m-1)
a. 5
b. 2
c. 4
d. 3
e. 6
D
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Which of the following best defines the sampling rate?
A. The number of samples obtained per second during the recording process. B. The bit depth of an audio file. C. The amount of background noise in an audio file. D. The speed of playback of an audio file.
Olber's paradox is explained by the fact that the Universe is neither static nor infinite in age
a. True b. False Indicate whether the statement is true or false
A box slides down a frictionless incline, and a hoop rolls down another incline. Both inclines have the same height, and both the box and the hoop have the same mass. If both objects start from rest, upon reaching the bottom of the incline which one will have the greater kinetic energy and which one will have the greater speed?
a. The box will have both the greater kinetic energy and the greater speed. b. The hoop will have both the greater kinetic energy and the greater speed. c. Both will have the same kinetic energy, but the hoop will have the greater speed. d. Both will have the same kinetic energy, but the box will have the greater speed.
Which interacts more with high-frequency light?
A) large particles B) small particles C) both the same