Question
Which law explains why it is difficult to hammer a nail
into a freely suspended wooden frame?Solution
According to Newton's third law, every action has an equal and opposite reaction. When you try to hammer a nail into a freely suspended frame, the frame moves in the opposite direction, making it difficult.
The period of revolution of a geo- stationary satellite is –
If the phase difference between two points is 120° for a wave with velocity of 360 m/ and frequency 500 Hz, then path difference between the two points...
A body is thrown vertically upward. At the highest point of its motion, which of the following is true?
Zero group was introduced by
Which one of the following diseases in humans can spread through air?
A person is hurt on kicking a stone due to –
Intensity of gravitational field of earth is maximum at –
What is the SI unit of force?
The magnetic field lines around a straight current carrying conductor are
A myopic person has a power of 1.25 dioptre, what is the local length and nature of his lens?Â
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