PLEASE HELP: A planet has an average distance to the sun of 3.36AU. In two or more complete sentances, explain how to calculate the orbital peroid of the planet and calculate it.

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?