Find th electric field a distance z from the center of a spherical surface of radius R that carriese a uniform charge density treat the case z R Express your answers in terms of the total charge q on the sphere use the law of cosines to write r in terms of R and theta. Be sure to take the positive root

Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 70 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 66 miles per hour and 74 miles per hour. (assume the data set has a bell-shaped distribution.)

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?