Name Period
3. If a sample of water increases in temperature from 20.0°C to 95.0* Cafter absorbing 655 000
calories of energy, how many grams of water are in the sample? (This time use water's specific heat in
cal/g*c.)

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?