An object having a mass 'm' moving with a velocity 'v' possesses a kinetic energy 'K'. If its velocity is doubled, its kinetic energy will become:
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The pressure inside the cabin of the aircraft flying at an altitude is
A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)
The second equation of motion gives the relation between
What is the range of frequencies of sound waves audible to human beings?
The SI unit of weight is a
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An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?
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