What is meant by refraction of a wave?
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Who first described how shock waves are formed?
What are the branches of physics?
why is a coin in a vessel not vissible when seen fromjust below the edge of the vessel but can be viewed from the same position when water is poured into the vessel ?
The principle of action of points is used in
What is the commercial unit of electrical energy ?
If a number of planes are talking off form an aircraft carrier, what is the minimum interval required between the take-off of the successive planes ?
Why ate the telegraph wires kept a little loose ?
What is the cause of brownian motion?
What is the life of permanent magnet and what type of magnet is used in speakers?
Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. At 72kmph, how long did it take forthe car to cover that distance?
Why is it easier to lift a stone in water than in air ?
Explain about Bessemer?