Charge g is distributed in a spherically symmetric ball of radius a. (a) evaluate the average volume charge density p. (b) now assume p(r) is directly proportional to r. (i) derive the formula for p(r) in terms of r, q, and a. at what value of r does p(r)= ? [ans: 340] (ii) find q(r), and graph it.

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

What happens to an isotope during radioactive decay?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?