If you transfer equal amounts of geat to 1kg of water and 1kg of cooper, which will change tempature more

If you transfer equal amounts of geat to 1kg of water and 1kg of cooper, the temperature of the cooper will change more . . . it'll get more degrees warmer than the water will.

That's because the specific geat of water is greater than the specific geat of cooper.

(This just means it takes more geat to warm some mass of water by some amount than it takes to warm the same mass of cooper by the same amount.)  

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

f is prop to m1xm2 double m1 double force