Which of the following has longest wavelength, a) blue light b)red light c)x-rays d)gamma rays ?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.