If the area is 2 square meters (2 m²), what's the force of gravity acting on the column of water?

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? )

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

What quantity do units represent in value