An electric kettle was switched on. The graph below shows how the temperature of the water inside the kettle changed. The energy transferred to the water in 100 seconds was 155 000 J specific heat capacity of water = 4200 J/kg °C. Determine the mass of water in the kettle. Use the graph above. Give your answer to 2 significant figures. – 6001

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Q1.         

An electric kettle was switched on.

The graph below shows how the temperature of the water inside the kettle changed

The energy transferred to the water in 100 seconds was 155 000 J.

specific heat capacity of water = 4200 J/kg °C

Determine the mass of water in the kettle.

Use the graph above.

Give your answer to 2 significant figures.

________________________________________________________________________________________________________ ____________________________________________________

Mass of water (2 significant figures) = _______________ kg

(5)

  1. Karan Desai Avatar
    Karan Desai

    155000 = 𝑚 × 4200 × 78
    𝑚 = 155000 / 4200 × 78
    m=0.4731 kg
    m=0.47 kg

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