Calculate the Change in entropy of the universe

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Homework Statement



Calculate the changes in the entropy of the universe for

a) A copper block of mass 0.5kg is dropped into a lake of 10 degrees with the block having a thermal capicity of 2J/K and a temperature of 100 degrees

Homework Equations



dS=dQ/T


The Attempt at a Solution



ok so I know how to do the question but i am confused on 1 thing;

do i integrate dS=mcdT/T so dQ=mcdT or do i use just dQ=C(t) because it gives me the thermal capacity not the specific heat.
 

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