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17 February, 06:16

An 800-W heater raises the temperature of 4 kg of soup by 40 °C in 13 minutes.

(a)

How much energy is transferred to the soup if there is no energy loss to the surroundings?

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Answers (1)
  1. 17 February, 08:23
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    Q=0.16*c kJ

    Explanation:

    Heat transfer and energy changes is related by the equation

    Q=mcΔT

    where

    Q=heat transfer

    m=mass of substance

    c=specific heat of the material

    ΔT = change in temperature

    Given

    m = 4 kg

    c=c

    ΔT=40° C

    Q=4*c*40

    Q=160c

    Q=160/1000*c kJ

    Q=0.16*c kJ
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