3. prove the statement: 1/2 m (m 1) l (m 1) here, in standard notation, ilm denote the normalized eigenvectors of i2 and hint use the identities

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.

80cm/s.

24cm/s.

53.3cm/s.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.