A student is pushing a 40 kg chair at a constant speed of 2m/s. How much work is needed to change speed to 5m/s?

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell