What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 340 nm falls on the same surface? use h = 6.63×10−34 j⋅s for planck's constant and c = 3.00×108 m/s for the speed of light and express your answer in electron volts.

50 inches should be the resultant vector

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j