Explain how the loudspeaker convert current in an electrical circuit to a sound wave?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

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.