Ask Question
2 June, 05:59

Consider a metal rod that has 10 W of heat conduction between its two ends, which are maintained at temperatures of 200 K and 400 K. If we raise the temperature of the hot end from 400 K to 500 K, what is the new rate of heat conduction along the rod? Group of answer choices

+1
Answers (1)
  1. 2 June, 07:23
    0
    heat conduction along the rod (Q/Δt):

    ⇒ Q/Δt = 15 W

    Explanation:

    heat conduction:

    Q/Δt = k. A. (T1 - T2) ... fourier law

    ∴ Q/Δt : heat trasmitted per unit of time.

    ∴ k: thermal conductivity

    ∴ A: contact surface area

    ∴ T1 - T2: temperature difference between its two ends.

    ⇒ Q/Δt = 10 W

    ⇒ T1 = 400K ∧ 500K

    ⇒ T2 = 200K

    ∴ 10W = k. A (400K - 200K)

    ⇒ k. A = 10 W/200K = 0.05 W/K

    if T1 = 500K

    ⇒ Q/Δt = (0.05 W/K) (500K - 200K)

    ⇒ Q/Δt = (0.05 W/K) (300K)

    ⇒ Q/Δt = 15 W
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Consider a metal rod that has 10 W of heat conduction between its two ends, which are maintained at temperatures of 200 K and 400 K. If we ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers