How far away was the object that reflected back the sound
On a day when the speed of sound in air is 340 m/s, a bat emits a shriek whose echo reaches it .025 s later. How far away was the object that reflected back the sound?
a) 4.25 m
b).85 m
c) .425 m
d) 8.5 m
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Determine the magnitude ratio and the phase lag for the system when subjected to a sinusoidal forcing having a 100 hz frequency. What, if anything is the problem using this system for this application.
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To obtain the rate of reaction 3I- (aq) +H3AsO4(aq) +2H+(aq)->I3-(aq)+H2AsO3(aq)+H20(l) you might follow the I- concentration or the I30 concentration.
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Samples of skin experiencing desquamation are analyzed for both moisture and melanin content. The results from 100 skin samples are as follows:
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