A point charge, Q placed a distance, r in an electric field. E is maintained at a potential V. The force, F experienced by the point charge can be expressed as​

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

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