Here is a problem from meissler inorganic chemistry, chapter 2, Q2.8a (end of chapter problems) As I can't access the solution manual, could someone please show me the math for this? Thank you!

Assertion (A): Black body is an ideal body that emits and absorbs radiations of all frequencies. Reason (R): The frequency of radiation emitted by a body goes from a lower frequency to higher frequency with an increase in temperature. (a) Both A and R are true and R is the correct explanation of ...

Relation: $KE = -TE, \ PE = 2TE, \ PE = -2KE$ where $KE$ is kinetic energy, $TE$ is total energy, and $PE$ is potential energy. Also, ionization energy, $IE = -TE$. I know that kinetic energy is $\dfrac{1}{2}mv^2$, and in Physics, potential energy is stationary, with stored energy stored to be ...