lead nitrate solution of for the verification of the law of conservation of mass should be prepared in
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It should be prepared in distilled water as it does not contain Cl- ion which reacts with Pb2+ ions to form PbCl2.
asif2996:
but i think this is beyond the properties of sound velocity and wavelength
What is the unit of sound
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decibel (dB)
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ur wlcm
What are various ranges of sound
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Hearing range describes the range of frequencies that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as shown by equal-loudness contours.
Several animal species are able to hear frequencies well beyond the human hearing range. Some dolphins and bats, for example, can hear frequencies up to 100,000 Hz. Elephants can hear sounds at 14–16 Hz, while some whales can hear infrasonic sounds as low as 7 Hz (in water).
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