It takes 487.5J to heat 25 grams of copper from25 °C to 75 °C. What is the specific heat in Joules/•g°C?
A. 0.39 J/g°C
B. 0.78 J/g°C
C. 609000 J/g°C
D. 589 J/g°C

Awalk up the phase change graph worksheet

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents