10. Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperatures may be different because the samples have different: (A) thermal conductivities (B) coefficients of expansion (C) densities (D) volumes (E) heat capacities

13. A boy pulls a wooden box along a rough horizontal floor at constant speed by means of a force as shown. In the diagram f is the magnitude of the force of friction, N is the magnitude of the normal force, and Fg is the magnitude of the force of gravity. Which of the following must be true? (A) P = f and N = Fg (B) P = f and N ＞ Fg (C) P ＞ f and N ＜ Fg (D) P ＞ f and N = Fg (E) None of the above.

10. Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperatures may be different because the samples have different: (A) thermal conductivities (B) coefficients of expansion (C) densities (D) volumes (E) heat capacities

其他試題

10. Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperatures may be different because the samples have different:
(A) thermal conductivities
(B) coefficients of expansion
(C) densities
(D) volumes
(E) heat capacities