Question

Texts: 14. A 1.00-kg block of aluminum is warmed at atmospheric pressure so that its temperature increases from 22.0°C to 40.0°C. Find (a) the work done on the aluminum, (b) the energy added to it by heat, and (c) the change in its internal energy. A. 0.049 J, 16.2 kJ, and 16.2 kJ B. -0.049 J, -16.2 kJ, and -16.2 kJ C. -0.049 J, -16.2 kJ, and 16.2 kJ D. -0.049 J, 16.2 kJ, and -16.2 kJ E. -0.049 J, 16.2 kJ, and 16.2 kJ 15. A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.150 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50.0°C? A. 5.00 cm B. 7.00 cm C. 9.00 cm D. 11.00 cm E. 13.00 cm

          Texts: 

14. A 1.00-kg block of aluminum is warmed at atmospheric pressure so that its temperature increases from 22.0°C to 40.0°C. Find (a) the work done on the aluminum, (b) the energy added to it by heat, and (c) the change in its internal energy.

A. 0.049 J, 16.2 kJ, and 16.2 kJ
B. -0.049 J, -16.2 kJ, and -16.2 kJ
C. -0.049 J, -16.2 kJ, and 16.2 kJ
D. -0.049 J, 16.2 kJ, and -16.2 kJ
E. -0.049 J, 16.2 kJ, and 16.2 kJ

15. A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.150 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50.0°C?

A. 5.00 cm
B. 7.00 cm
C. 9.00 cm
D. 11.00 cm
E. 13.00 cm

texts 14 a 100 kg block of aluminum is warmed at atmospheric pressure so that its temperature increases from 220c to 400c find a the work done on the aluminum b the energy added to it by hea 64963

Added by Glenn G.

Question

Please give Ace some feedback