Is it possibly to make special swords made out of light that can cute through anything like in the movie star wars?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current