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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumsingle choice

When 20 J of work was done on a gas, 40 J of heat energy was released. If the initial internal energy of the gas was 70 J, what is the final internal energy?

Options:

Answer:

Solution:

$Δ U = Q - W = - 40 - (- 20) = - 20$ J. $U_{f} = 70 - 20 = 50$ J. A.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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