1. How many joules of heat must be transferred to a 420-g aluminum pizza pan to raise its temperature from 22°C to 232°C? The specific heat of aluminum in this temperature range is 0.90 J/g•°С. Show your work. Q = (mass) (Cp) (△T)
Q=
Cp=
Mass=
△T=

Which best represents the law of conservation of mass ?

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?