what is meant patch cards..
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The velocity of sound in gas depends upon what?
Explain the difference between the atomic theory and the kinetic theory?
When gravity is the only force acting on an object the object is in what?
Explain real and virtual image?
assuming g = 9.8 m/sec2, what is the weight on earth, in newtons, of a 60 kilogram person?
What is the measure of the force of gravity on an object?
What path does an asteroid take?
Why is one?s breath visible in cold, but not in not in hot weather ?
When a glass cylinder is filled with water and a piece of thick paper is placed at the mouth and the cylinder is inverted, the paper dies not fall. Why ?
Why so coloured clothes sometimes fade in sunlight ?
What is the name for the physical constant with a value of 6.62 x 10-27 erg seconds?
why current is denoted by I?