Suppose 51 kw is to be transmitted over two 0.150 ω lines. part a estimate how much power is saved if the voltage is stepped up from 220 v to 2200 v and then down again, rather than simply transmitting at 220 v . assume the transformers are each 99% efficient. express your answer using two significant figures.

In what direction does an applied force move an object

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings