Determine the amount of thermal energy that must be transferred to a copper wire (mass 20g) to increase its temperature from 25.0°C to

Question

Determine the amount of thermal energy that must be transferred to a copper wire (mass 20g) to
increase its temperature from 25.0°C to its melting point (1085.0 °C). Note: The specific heat of
copper is 385 J/Kg. C.

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Vân Khánh 4 years 2021-07-26T16:17:50+00:00 1 Answers 9 views 0

Answers ( )

  1. Doris
    0
    2021-07-26T16:19:09+00:00
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    Answer:  Thermal energy is 8,2 kJ

    Explanation:  Heat Q = m c ΔT .    c = 385 J/kg C  and

    ΔT = (1085 – 25)C = 1060 C.   Q = 0.020 kg · 385 J / (kg C) ·1060 C

    = 8162 J

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