Like the moon's orbit, earth's orbit is not a perfect circle, but an oval how do you think this might affect earth's tides?

How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c