The rate of vibration of a string under constant tension, r cm/s, varies inversely with the length of the string, l cm. When the string is 17 mm long, the rate of vibration is 413 cm/s. Write an equation that describes the rate of vibration of a string in terms of the length of the string.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity