A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30° relative to the normal. If the index of refraction of water and glass are 1.33 and 1.5, respectively, at what angle (in degrees) does the light leave the glass (relative to its normal)?

a. 26
b. 35
c. 42
d. 22
e. 48


C

Physics & Space Science

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On Mars, the acceleration due to gravity is 8 m/s/s. If an object is dropped over the surface of Mars, how fast will it be moving at the end of 3 seconds of fall?

A) 32 m/s B) 72 m/s C) 16 m/s D) 24 m/s E) 8 m/s

Physics & Space Science

If the drag force on a car is F at a moderate highway speed v, at what speed would the drag force be doubled?

a. 1.2v c. 1.7v b. 1.4v d. 2.0v

Physics & Space Science

A tangent line is parallel to a normal lin

Indicate whether the statement is true or false.

Physics & Space Science

When you swing your partner at an old-time square dance, you lock elbows and your partner is also swinging you. As a result, you both move in a circle. For this reason,

A. your pull cancels out your partner's pull, making for zero net force and no acceleration. B. you and your partner must simultaneously pull each other. C. you both must push outward against each other. D. you must pull your partner toward you and your partner must push you.

Physics & Space Science