A Brass Rod with a Length of 20 $^{\circ}$ C and a Cold Temperature of -10

question 82

Multiple Choice

A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm and this system is placed between a hot temperature of 150 $^{\circ}$ C and a cold temperature of -10.0 $^{\circ}$ C.The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m $^{\circ}$ C and 230 W/m C respectively.The rods have the same cross sectional area of 20.0 cm².What is the heat flow from the hot temperature to the cold temperature?

• A) 683 W
• B) 528 W
• C) 52.8 W
• D) 68.3 W

---

Definitions:

Online Databases

Digital collections that can be accessed through the internet, containing various types of information including articles, data sets, and multimedia.

Federal Trade Commission

A United States federal agency designed to prevent anticompetitive, deceptive, and unfair business practices.

Human Resources

The department within an organization that focuses on recruiting, managing, and directing people who work in it. They handle issues related to employment, such as compliance with labor laws and employment standards, administration of employee benefits, and some aspects of recruitment and dismissal.