How does the strength of an electromagnet depend on the current and the number of turns in the coil?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little