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Heat and Thermodynamics Mcqs MDCAT

 

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Q1: A car of mass M moving with speed v. the brake mass m and heat capacity c , is used to stop the car. If half of the K.E is absorbed by the brake , then what is increase in temperature of the brake?
A) Mv²/4mc
B) Mv²/2mc
C) Mv²/4Mc
D) Mv²/2Mc

A) Mv²/4mc



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