GG16
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Hi

I have a test in the next week on Thermal Physics but we have not yet covered specific latent heat.

The spec says: "Calculations including continuous flow."

What are these calculations?

Thank you

GG16
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Physics Enemy
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(Original post by GG16)
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Only eqn I can think of at this level re: latent heat is: Q = mL

Q is heat absorbed/released during a phase change (J), L is specific latent heat (J kg^-1)

L quantifies how energy consuming/releasing a substance is when undergoing a phase change, controlling for mass.

Heat is absorbed in endothermic processes e.g) solid -> liquid -> gas. The reverse phase changes are exothermic (heat released).

When a phase change occurs, temp is constant. Q = mcΔT involves temp changes i.e) whilst substance maintains phase.

Each substance has 2 L values, 1 for melting point (solid/liquid) and 1 for boiling point (liquid/gas).
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