. Estimate the upper limit to the heat emission of the sun. (Suns temperature 7000k, Sun's ius 7x108m)
(3marks]​

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? )

How does an observation about an object differ from an inference about that object

What happens to an isotope during radioactive decay?