Instrument for measuring blueness of the sky or ocean is called ___________.
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______ is the perpendicular distance between point of application of force and axis of rotation.
Why boiling point of water decreases at high altitudes?
The value of universal gravitation constant (G) was determined by
A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of theocean floor.
A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/sq.s) is:
The material used in electric heater is
The laws which govern the motion of planets are called ___________________.
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