What is the dramatic increase in amplitude called when the frequency of forced vibrations on a body matches the bodys natural vibration frequency?
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The lowest frequency that determines the pitch of a musical note is most commonly called the?
Two parallel beams of electrons are moving in the same direction. Does they repel or attract each other?
What is a Noise ?
What happens to the velocity of sound with the rise of temperature?
What is the index of refraction of air?
Why does ink not spread n the paper used in the ?slick? ?
How many protons are present in a single deuterium nucleus?
Explain nuclear fission?
Explain what is photometry?
What is the difference between the atomic theory and the kinetic theory?
Why dies a small quantity of air introduced into the top of the barometer tube depress the level of mercury ?
Explain the Electric dynamo ?