Heat transfer (conduction, convection, radiation), blackbody radiation and laws of thermodynamics.
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Q1 · Thermal Physics and Thermodynamics · MEDIUM
An ideal gas in a star's interior undergoes an adiabatic expansion where its volume increases by a factor of 8. If γ = 5/3, by what factor does its pressure decrease?
Q2 · Thermal Physics and Thermodynamics · EASY
A star radiates energy at a rate of 4.0 × 10²⁶ W and has a surface temperature of 6000 K. If its temperature increases to 12000 K while its radius remains constant, what will be the new power radiated?