Physics, 07.09.2019 18:10 lberries08
A60 year old person has a threshold of hearing of 93.0 db for a sound with frequency f=10,000 hz. by what factor must the intensity of a sound wave of that frequency, audible to a typical young adult, (sound level=43.0 db) be increased so that it is heard by the older person.
Answers: 2
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Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
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What happens when a rubber rod is rubbed with a piece of fur?
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When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?
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A60 year old person has a threshold of hearing of 93.0 db for a sound with frequency f=10,000 hz. by...
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