If electrical energy costs 12 cents, or $0.12, per kilowatt-hour, then what would the following events cost? (a) burning a 120 w light bulb for 24 h straight(b) operating an electric oven for 7.0 h if it carries a current of 20.0 a at 220 v

An observer that stands still as the electron moves by him, will observe

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final