All of the following involve waves of electromagnetic energy except
a. watching videos on a computer screen
b. radios receiving signals through air
c. the rumble of thunder during a storm
d. sunlight shining on a plant leaf

Phase changes are chemical changes. true or false

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.