Question

A block has a temperature of 278 K. Heat could spontaneously flow from which of the following objects to the block? Choose all that apply.

a. A counter top at 232 K
b. A carpet at 193 K
c. A rug at 377 K
d. A wall at 366 K
e. A brick at 278 K
f. A board at 113 K
g. A table 380 K
h. A shelf at 325 K

Answer 1

Heat would spontaneously flow to a block at 278 K from objects with higher temperatures, specifically a rug at 377 K, a wall at 366 K, and a table at 380 K. The correct answer is option c., d. and g.

Step-by-step explanation:

Heat spontaneously flows from objects with a higher temperature to objects with a lower temperature, according to the second law of thermodynamics. Considering a block with a temperature of 278 K, heat would spontaneously flow to the block from any object with a temperature above 278 K.

Based on this information, the objects from which heat could spontaneously flow to the block at 278 K are:

• c. A rug at 377 K
• d. A wall at 366 K
• g. A table at 380 K

These objects are at higher temperatures compared to the block, and therefore they can transfer heat to the block until thermal equilibrium is reached.