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...
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
? 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
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.
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?