Agarage door opener has a power rating of 350 watts.
if the door is in operation for 30 seconds, how many joules of energy are used? (hint: remember that 1 watt = 1 joule/sec) 350 j 11.7 j 10,500 j 0.086 j

Select all the correct answers.which two statements are true? a moving magnetic field creates an electric field.a constant magnetic field creates an electric field.a constant electric field creates a magnetic field.a moving electric field creates a magnetic field.resetnext

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?

If frequency goes up, what happens to wavelength? does it get shorter or longer?