A certain x-ray tube requires a current of 7 mA at a voltage of 80 kV. The rate of energy dissipation is:

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

Which form of pure carbon is so hard that it can be used in cutting tools?