Which energy conversion takes place when a solar cell is used to light a street lamp?

1. most waves are caused by vibrations. what motion in a transmitting antenna causes the vibrations that produce radio waves? 2. name two common household appliances that produce electromagnetic waves other than radio waves. what kind of electromagnetic waves do they produce? 3. when you are in a car and it passes through a tunnel, the radio signal is sometimes lost. why do you think this happens?

What are similarities and differences of reflection, refraction, diffraction and absorption?

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?