Two balls of equal mass collide. one of them experiences a 12 m/s^2 acceleration right after the moment of impact. what acceleration does the other ball experience at the same moment

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

Atomic nuclei of almost all elements consist of

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.