Determine the mechanical advantage of a car jack that uses an input force of 30 N and provides an output force of 600 N. pls answer quick

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

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?

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