AP Physics 1: 3.4 Waves

of transfers lodge tunel Okay well sound waves could be

used for good like when our favorite song comes up

in our playlist or they could be used for evil

like when our neighbor decides to motel on at seven

in the morning anyway sound waves start when something vibrates

Those vibrations moving back and forth create longitudinal waves compressing

and expanding the air compression and expansion That means we're

dealing with longitudinal waves so answers a and b are

out and unlike trans verse waves longitudinal waves don't displace

matter The waves make particles within matter scrunch together or

get farther away But it's not like ripples in a

pond moving up in nam longitudinal waves carry energy and

momentum but they don't create displacement So the right answer

well that'll be option c and this makes sense if

we just consider how an object creates sound we think

of something vibrating we can see how it would compress

the air around it way just shouldn't try to actually

eat with a tuning fork will just end up hearing 00:01:21.939 --> [endTime] longitudinal waves coming from our empty stomach