A120 volt refrigerator uses 650 watts. calculate how much work is done by the refrigerator in one hour.

a) 9.7 j
b) 39,000 j
c) 2,300,000 j
d) 4,100,000 j

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

What is the temperature in degrees celsius of a substance with a tempature of 49k