A Brass Rod Is Placed Between Two Temperature Sources So $^{\circ}$

question 62

Multiple Choice

A brass rod is placed between two temperature sources so that heat can flow between them.One temperature is 80 $^{\circ}$ C and the other temperature is 20 $^{\circ}$ C.The length of the rod is 50.0 cm and the cross sectional area is 15.0 cm².If the coefficient of thermal conduction for brass is 100 W/m $^{\circ}$ C,then what is the heat flow between the hot temperature and the cold temperature?

• A) 7.5 W
• B) 8.2 W
• C) 9.4 W
• D) 12 W
• E) 18 W

---

Definitions:

Colonial Town

A settlement established by colonizing countries during the period of exploration.

Strong Influence

A significant impact or authority that one entity or factor has over others, shaping decisions, behaviors, or outcomes.

Stamp Act

A 1765 British law that imposed a tax on the colonies for stamped paper used in official documents, widely unpopular and seen as a direct taxation without colonial representation.

Tax

Mandatory financial charges imposed by a government on individuals, corporations, or other entities to fund public expenditure.