6. We use an to turn a sound into a wave trace which we can see on a screen. 8. The of a sound is how high or low it is. A high sound (like the sound of ) is made when there are a lot of vibrations every second. We say the sound has a high .

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?