Which of the following determines  whether light shining on a metal surface  will eject electrons from that surface? a. the intensity of the light b. the frequency of the light c. the angle of incidence of the light d. the amount of time the light  shines on the surface

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to