Answer / Ish Bhatia

Frequency of a sound wave in air can vary greatly, but it is usually measured in Hertz (Hz), with human hearing typically able to detect sounds between 20 Hz and 20,000 Hz.

a car starts from rest with uniform acceleration "a" for sometime and then with uniform retardation "b" and comes to rest. The time of motion is "t". find the maximum velocity attained by it?

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is photocell can be used as photodiode

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How dies fanning produce a sense of coolness to the face ?

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What is Kinetic Energy ?

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When a person whirls a rock on the end of a string and maintains it in uniform circular motion, the force exerted on the rock is most accurately referred to as?

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What is the difference between optical zoom, digital zoom and smart zoom?

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Tell me how many neutrons and how many protons are present in a single deuterium nucleus?

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What are wave fronts?

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Describe the Working of the Telephone?

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Explain heat treatment. Why and how is it done?

1 Answers   Ashok Leyland,

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How echo is produced?

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Define Fixation of Nitrogen?

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