Consider a blue light which has a wavelength of 486 nm. What is it’s wavelength (in nanometers) in plexiglas where light travels at 2x10^8 m/s. Answer to two decimal places.

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12000j is work done

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.