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9) Derive an expression to calculate the time of cooling of a body through a range T2 to T1(T2>T1) of temperature.
10) A steel wire 0.72 m long has a mass of 5.0×10−3 kg. If the wire is under a ter sion of 60 N. Calculate the speed of transverse waves on the wire.
Video solution 1: 9) Derive an expression to calculate the time of cooling of a body through a range T2 to T1(T2>T1) of temperature.
10) A steel wire 0.72 m long has a mass of 5.0×10−3 kg. If the wire is under a ter sion of 60 N. Calculate the speed of transverse waves on the wire.
Derivation of mathematical expression for Newton's law of cooling • HERO OF THE DERIVATIONS.
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Derivation of mathematical expression for Newton's law of cooling • HERO OF THE DERIVATIONS.
A body cools from 80°C to 50°C in 5 minute. Calculate the time it takes to cool from 60°C to 30°C. The temperature of the surrondings is 20°C. Ans. We know that