Aring made of gold is heated and then hammered into a flat, coin-like shape. is this a physical change? explain.

What are the applications of electromagnetic waves

If y gets smaller as x gets bigger and y have an relationship?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n