Ask Question
2 April, 22:48

A thin, square metal plate measures 14 cm on each side and has emissivity of 0.60. The plate is heated to a temperature of 745°C. What is the rate at which the plate radiates energy? The Stefan-Boltzmann constant is 5.67 * 10-8 W / (m2? K4). Remember that the plate will radiate energy from both its top and bottom surfaces.

+4
Answers (1)
  1. 2 April, 23:00
    0
    L = 15cm = 0.15m

    A = 0.15 * 0.15 = 0.0225

    Sradiation is transfered from bottom

    σ = 5.67 * 10⁻⁸ W/m²k

    T = 605 c = 878k

    Rate of energy transfer

    Q = σ * A * E * T⁴

    5.67 * 10⁻⁸ * 0.0225 * 2 * 0.8 * 878⁴

    1792.17 W
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A thin, square metal plate measures 14 cm on each side and has emissivity of 0.60. The plate is heated to a temperature of 745°C. What is ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers