A heat conducting rod, 0.90 m long, is made of an aluminum section that is 0.10 m long, and a copper section that is long
Both sections have cross-sectional areas of The aluminum end is maintained at a temperature of and the copper end is at The thermal conductivity of aluminum is 205 W/m ? K and of copper is 385 W/m ? K. Steady state has been reached, and no heat is lost through the well-insulated sides of the rod. The temperature of the aluminum-copper junction in the rod is closest to
A) 61°C.
B) 58°C.
C) 56°C.
D) 54°C.
E) 52°C.
Answer: A
You might also like to view...
? If the total translational kinetic energy of the molecules of oxygen in a container is 15 J at room temperature, what is the total rotational kinetic energy of these molecules?
A. ?5 J B. ?10 J C. 20J D. ?25 J E. 0J
A batter applies an average force of 8000 N to a baseball for 1.10 ms. What is the magnitude of the impulse delivered to the baseball?
What will be an ideal response?
The energy conversion represented by an automobile speeding up along a level road is
A) chemical to kinetic. B) chemical to gravitational. C) thermal to chemical. D) gravitational to kinetic. E) kinetic to chemical.
An object is placed 10 cm in front of a concave mirror with a 20-cm focal length. Determine the image location (in cm)
a. -20 b. -15 c. -10 d. -5 e. 6.7