When there is a change in magnetic field in a closed loop, a. electromagnetic induction occurs b. an e. m. f. is induced in the wire c. an electric current is created in the loop of the wire d. All of these

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.