Now compare the mean thermal energy (derived in b) with the mean coulomb energy. in the center of the sun, t is about 15 million k and density is about 100 gm/cm. assume that the sun is entirely made up of hydrogen. remember that the coulomb potential energy is e -2 where r is the mean distance between particles (which can be calculated using the density) and q is the charge on the particle. note that the coulomb constant is in cgs units. c. 142

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.