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

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brought to you by wave velocity which is usually noticeable

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

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all right A group of students is tasked with determining

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the velocity of a standing wave generated by a string

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

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

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The options period number two All right well the key

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to answering this question figuring out the right equation to

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use we need an equation that includes velocity is a

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variable So the equation to find the wavelength two times

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length divided by the number of anti nodes Just one

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more velocity Well what about frequency Frequency equals the number

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of anti nodes times velocity divided by the length times

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

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way already need to know the length of the string

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So the only other things we need would be the

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

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of our correct choices But the other choices period amplitude

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

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this equation well we know that the frequency is the

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reciprocal of the period so if we know the period

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then we can figure out the frequency right So the

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

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

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friends list to get the right answer but this is

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the kind of abstract thinking that really defines what a

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

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gets as from point a to point b but a

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lot of the time physics is about being at point

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a and figuring out where point b is in the

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

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be math If we need help focusing a triple espresso

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might do the Job 3 times 1 espresso thats matt

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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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