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Waves Videos 15 videos

AP Physics 1: 1.3 Waves
220 Views

AP Physics 1: 1.3 Waves. Find the wave speed.

AP Physics 1: 2.3 Waves
195 Views

AP Physics 1: 2.3 Waves. Which of the following is best described as longitudinal wave motion?

AP Physics 1: 2.1 Waves
209 Views

AP Physics 1: 2.1 Waves. What is the largest possible amplitude that the resulting wave can have?

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AP Physics 1: 2.5 Waves 4 Views


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Description:

AP Physics 1: 2.5 Waves. Which other quantities need to be measured?

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Transcript

00:00

Thank you We sneak then here's your smoke du jour

00:05

brought to you by wave velocity which is usually noticeable

00:08

when we're leaving a coffee shop Hang out Yeah that

00:12

all right A group of students is tasked with determining

00:15

the velocity of a standing wave generated by a string

00:18

They're given the length of the string which other quantities

00:22

that they need to measure select two answers aren't here

00:25

The options period number two All right well the key

00:30

to answering this question figuring out the right equation to

00:33

use we need an equation that includes velocity is a

00:36

variable So the equation to find the wavelength two times

00:40

length divided by the number of anti nodes Just one

00:43

more velocity Well what about frequency Frequency equals the number

00:47

of anti nodes times velocity divided by the length times

00:50

two All right yeah That'll work there's that little bee

00:53

way already need to know the length of the string

00:56

So the only other things we need would be the

00:58

number of nodes which is answer beams so that's one

01:02

of our correct choices But the other choices period amplitude

01:06

and distance between anti nodes All those aren't involved in

01:10

this equation well we know that the frequency is the

01:13

reciprocal of the period so if we know the period

01:16

then we can figure out the frequency right So the

01:19

other correct answer is a period when we're faced with

01:22

questions like this We'll have to scroll through our equation

01:25

friends list to get the right answer but this is

01:27

the kind of abstract thinking that really defines what a

01:29

physicist does It's not just about math asked sheldon Math

01:35

gets as from point a to point b but a

01:37

lot of the time physics is about being at point

01:39

a and figuring out where point b is in the

01:42

first place Don't get us wrong though There still gonna

01:44

be math If we need help focusing a triple espresso

01:47

might do the Job 3 times 1 espresso thats matt

01:50

Of course that might just make us vibrate so much 00:01:52.81 --> [endTime] We turned into a standing wave ourselves No

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