Weight (W) of a body can be given by the formula
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The spring balance works on the principle of __________
Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.
Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.
A broadcasting station transmits waves with a frequency of 71 x 104 Hz and a speed of 3 x 108 m/s. The wavelength of the wave is
To hear a distinct echo the time interval between the original sound and the reflected sound must be at least
The force ultimately responsible for mass movement
Heavy water is mostly used in which of the following?
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