A dipole consists of two point charges, each located a distance d/2 from the origin. Point P is a distance r from the origin, along the z-axis. a. Write an exact expression for the net potential at point P, assuming the reference point is at infinity. Simplify your expression into a single fraction. Show your work

Define the meaning of the unalienable rights of life liberty and persuit of happiness

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.

The ozone hole appears in antarctica during