Find the result of mixing 40 gm of ice at -10°C in 300 gm of water at 90°C in a copper calorimeter of mass 70 gm.
​

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

How have the competing explanations' experiments on atoms affected the development of the atomic model?

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.