If an engine does 400 J of work in 5 s, how much power was generated? A.8W
B.8000W
C.800W
D.80w

Why do electron microscopes have higher resolving power than light microscopes?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.