Physics 011
Quiz#12
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Chapter 12 |
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Practice Problems |
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1 |
A sound wave has a frequency of 1040 Hz. The air
temperature is C. To the
nearest tenth of a meter per second, what is the speed ? |
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2 |
To the nearest centimeter , what is the wavelength of the
sound in problem 1)? |
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3 |
Two speakers are both emitting sounds ,the first with an
intensity level of 1x10
w/m^2 and the second with an intensity of 1x10-10 w/m^2. What is
the db level of the first? |
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4 |
What is the difference in the decibel (db) level of the
two sounds in problem 3)? |
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5 |
What is the fundamental frequency (to the nearest Hz) of
an open cm long organ pipe
if the air temperature is 30 degrees Celsius? |
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6 |
In problem 5, what would be the correct answers if it were
a closed organ pipe ? |
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7 |
The air temperature is 20 degrees Celsius and you are
travelling at meters/sec
toward a speaker emitting a sound at 1000Hz, which is travelling away from
you at a speed of 30 meters/sec. To the nearest Hz, what is the frequency you
hear? |
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8 |
In problem 7, what would be the answer if the speaker were
travelling towards you? |
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