A flashlight beam makes an angle of 60° with the plane of the surface of a calm lake before it enters the water. In the water what angle does the beam make with the plane of the surface? The index of refraction of water is 1.33
A) 0° B) 68° C) 60° D) 30° E) 22°
B
Physics & Space Science
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a. quasars. b. radio galaxies. c. the 3-Kelvin radiation. d. quasars and radio galaxies.
Physics & Space Science
Fundamental Forces: The main reason that there is a limit to the size of a stable nucleus is
A. the limited range of the gravitational force. B. the short range nature of the strong nuclear force. C. the weakness of the gravitational force. D. the weakness of the electrostatic force.
Physics & Space Science
It is possible to have a zero acceleration, and still be moving
Indicate whether the statement is true or false
Physics & Space Science
A battery stores electric charge in the same way that a bottle stores water
Indicate whether the statement is true or false
Physics & Space Science