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Q. An elastic cord is 62cm long when a weight of 59N hangs from it but is 86cm long when a weight of 78N hangs from it. What is the "spring" constant k of this elastic cord?

Q. If the pump outlet is blocked and the handle pushed until internal length of the pump cylinder is 21, by how much does the air temperature rise? Suppose that no heat is lost.

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Category:- Physics
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