A severe thunderstorm dumped 2.5 in of rain in 30 min on a, Ask an Expert

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Q. A severe thunderstorm dumped 2.5 in of rain in 30 min on a town of area 33km2. What mass of water (in kg) fell on town? One cubic meter of water has a mass of 103kg.

Q. A bat emits a sound whose frequency is 82.8kHz. The speed of sound in air at 20oC is 343 m/s. However, the air temperature is 38.7 oC, so the speed of sound is not 343 m/s. presume that air behaves like an ideal gas, and find the wavelength of sound.

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