Which of the following is an example of chemical energy converted into mechanical energy? a. a windmill blades spinning
b. riding a bicycle
c. plugging in a lamp and turning it on
d. building a campfire

What’s #16 asking and how do i solve it?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Why is the use of carbon-14 limited