When a potential difference of 150 v is applied to the plates of parallel-plate capacitor, the plates carry a surface charge density of 30 nc/cm^2. the spacing between the plates (in μm) is: a) 2.2 b) 1.1 c) 4.4 d) 6.6

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.