Explain how you might use the concept of beat frequency to tune a musical instrument using tuning forks. Would this method work better for an instrument that is slightly out of tune or an instrument that is completely out of tune?

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Nelly StrackeLv2

25 Oct 2019

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1. Suppose that in this experiment the temperature of the roomhad been lower, what effect would this have had on the length ofthe resonating air column for each reading? Explain
2. a). how would an atmosphere of hydrogen affect the pitch of anorgan pipe?
b). How would if affect the pitch of a tuning fork? Explain
3. A tuning fork rated at 128 vibrations per second is held over aresonance tube. What are the two shortest distances at whichresonance will occur at a temperature of 200 C?
4. A vibrating tuning fork is held over a resonance tube, andresonance occurs when the surface of the water in the tube is 10cm. below the fork. If the temperature of the air is 200C,calculate the frequency of the tuning fork.
5. Do you know of any musical instrument that is played by varyingthe length of the pipe? Do you know of any blowing differently toexcite different modes of vibration?

You have an optical instrument but you're not sure whether it isamirror or a lens, so you use it to make some observations.(Pleasenote that you're attempting to discover what opticalinstrument youhave using a process of elimination. As such, youranswers in eachquestion are dependent upon your answers to theprevious questions.i. e. Once an optical instrument is eliminatedas a possibility,you should consider it eliminated for eachquestionthereafter.)

(a) When you place an object at aparticularspot in front of your optical instrument you observe thatthe imageof the object is smaller than the object itself. Whatcould youroptical instrument be? Select all the possibilities fromthe listbelow.
A concave mirror.
A convex mirror.
A plane mirror.
A converging lens.
A diverging lens.

(b) When you then move the object toward the optical instrumentasmall distance you observe that the image of the objectincreasesin size. What could your optical instrument be? Select allthepossibilities from the list below.
A concave mirror.
A convex mirror.
A plane mirror.
A converging lens.
A diverging lens.

(c) You also observe that the image created by theopticalinstrument is inverted compared to the object. What couldyouroptical instrument be? Select all the possibilities from thelistbelow.
A concave mirror.
A convex mirror.
A plane mirror.
A converging lens.
A diverging lens.

(d) Finally, you observe that when you bring the object quitecloseto the optical instrument the image is upright and on the samesideof the optical instrument as the object. What is youropticalinstrument?
A concave mirror.
A convex mirror.
A plane mirror.
A converging lens.
A diverging lens.

You have an optical instrument but you're not sure whether itis amirror or a lens, so you use it to make some observations.(Pleasenote that you're attempting to discover what opticalinstrument youhave using a process of elimination. As such, youranswers in eachquestion are dependent upon your answers to theprevious questions.i. e. Once an optical instrument is eliminatedas a possibility, youshould consider it eliminated for eachquestion thereafter.)

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Explain how you might use the concept of beat frequency to tune a musical instrument using tuning forks. Would this method work better for an instrument that is slightly out of tune or an instrument that is completely out of tune?

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Physics: Principles with Applications

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