An incident ray of light strikes a diamond at an angle of 45°. The index of refraction of air is 1.0003 and the index

of refraction of a diamond is 2.42.

What is the angle of refraction rounded to the nearest

whole number?

2°

17

19

45

Explanation:

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d.7.5cm is your answer

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.