D. 5.0 g of water at 25°C is dropped onto a large block of ice at 0 °C. The water cools to 0 °C and some of the ice melts. Assume that all the energy lost by the water is gained by the ice. What is
the mass of ice that melts? The specific heat capacity of water is 4.2J/(g°C). The specific latent
heat of fusion of ice is 340J/g.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

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.

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?