The weight of a boy on the surface of the moon is 300 N. The weight of the same boy on the surface of the earth will be
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The SI unit of acceleration is _______________.
Humidity is a measure of the _______________.
'Parsec' is the unit measurement of
An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4.
A person holding a pen in his left hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena?
The frequency of direct current is _____________
The force of friction between two surfaces will increase if: