- #1
bigsaucy
- 38
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Hi all, just a question I am having trouble with
1.) You're watching a carpenter pound a nail. He hits the nail twice a second, but you hear the sound of the strike when his hammer is fully raised. What is the minimum distance from you to the carpenter? assume the air temperature is 20 degrees celcius.
I figured that since the speed of sound in air at 20 degrees celcius is 343 m/s and it takes him 0.50 seconds to hit the nail once, that the minimum distance is (0.5) (343) which is 171.5 m but the book says the answer is 86m
1.) You're watching a carpenter pound a nail. He hits the nail twice a second, but you hear the sound of the strike when his hammer is fully raised. What is the minimum distance from you to the carpenter? assume the air temperature is 20 degrees celcius.
I figured that since the speed of sound in air at 20 degrees celcius is 343 m/s and it takes him 0.50 seconds to hit the nail once, that the minimum distance is (0.5) (343) which is 171.5 m but the book says the answer is 86m