A girl (on the earth) drops a ball of mass 0.5 kg from a height of 2 metres. i. How much G. P.E. does the ball have before it has dropped?
ii. How much G. P.E. does it have once it hits the ground?
iii. What happens to all of the GPE? (think about energy transfers)

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Which statement describes james chadwick’s discovery.