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Q. Which of the following represents the speed of a sound wave?
The speed of sound is defined as the distance which a point on a wave, such as a compression or a rarefaction, travels per unit time. It is represented by s = wavelength x frequency.
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Q. When a moving bus stops suddenly, the passenger are pushed forward because of the
Q. The force exerted by a magnet is an example of ________
Q. Which of the following is a compound machine?
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Q. How many diodes are in a full wave bridge rectifier?
Q. Which of the following statements is correct?
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