What is the specific heat of a metal if it takes 15,000 J of heat to raise the temperature of 20 points a 620-9 sample from 15.0C to 85.0C?

Which best represents the law of conservation of mass ?

Aball of mass 0.3kg is released from rest at a height of 8m. how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class