[PLEASE HELP ASAP] two parallel plates of area 5.68x10^-3 m^2 have equal and opposite charges of 4.38 x 10^-11 c placed on them. what is the electric field between the plates? (unit = n/c)

What are similarities and differences between refraction, reflection, diffraction and absorption?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm