We've seen that for thermal radiation, the energy is of the form avt4, where a is a universal constant, v is volume, and t is temperature. a. the heat capacity cv also is proportional to a power of t, t^x. what is x? b. the entropy s is also proportional to a power of t, t^y. what is y? c. if a thermal radiation gas has energy 17 j, what is its helmholtz free energy f? d. if a thermal radiation gas has energy 17 j, what is its gibbs free energy?

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

It maybe because uranus is made of gas but uranus has a solid core in the middle