Physics-
General
Easy
Question
The equation of a wave is y= 2 sin
(0.5x - 200t), where x and y are expressed in cm and t in sec The wave velocity is
- 100 cm/sec
- 200 cm/sec
- 300 cm/sec
- 400 cm/sec
The correct answer is: 400 cm/sec
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P, Q and R are three coplanar forces acing at a point and are in equilibrium Given P = 1.9318 kg wt, sin 
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