Question

Two objects are in contact. Which of the following conditions will yield the greatest rate of heat flow between the objects?

A. Object A is at -20, and object B is at 20 degrees c

B. Object A is at -20 degrees C, and object B is at 0 degrees C

C. Object A is at 0 degrees C, and object B is at 0 degrees C

D. object A is at -10 degrees C, and object B is at 10 degrees C

Answer 1

A

Step-by-step explanation:

The rate of heat flow is directly proportional to the difference in temperatures between the two objects. The difference is greatest in the situation A (40 degrees Celsius) causing the heat flow to be greatest among the choices.