What type of electromagnetic waves are used to kill viruses

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?