You are investigating Hooke's law by putting different masses on the end of a spring. What apparatus would you use to measure the force exerted by the mass hanging from the spring?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.