Hearing to be most sensitive
The human ear canal is about 2.3 cm long. If it is regarded as a tube open at one end and closed at the eardrum, what is the fundamental frequency around which we would expect hearing to be most sensitive? (Take the speed of sound to be 349 m/s.)
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A pipe open at both ends has a fundamental frequency of 380 Hz when the temperature is 0°C. (a) What is the length of the pipe?
Why is methyl alcohol CH3OH better at protecting solutions againstfreezing than other molecules? Or more generally where can I findsome good literature that has general advice to help one predict colligative property trends for random molecules?
If an analyte exhibits both absorbance and fluorescence at a given excitation wavelength, what will doubling the irradiance beam do,if anything?
The quarterly return for a group of 50 mutual funds with mean of 2.8% amd standard deviation of 5.1%--can be modeled by a normal model. Based on the model N (0.028, 0.051). what are the cutoff values for
186 grams of sodium oxide, a basic anhydride, are to be neutralized in a 2 step method. First the solid is added to excess water to produce an aqueous solution of sodium hydroxide.
The Roadrunner launches himself across the gorge at a launch angle of 16° above the horizontal, and lands with 1.4 m to spare. (a) What was the Roadrunner's launch speed?
The solubility product for magnesium fluoride is6.4x10-9. What is the molar solubility of magnesium fluoride in moles per liter of solution.
Determine a) the rate of power generation for average wind speed conditions on the north Texas plains b) the profit generated in 30 days of operation
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