How long will it take a 500-W heater to raise the temperature of 400 g of water from 15.0 °C to 98.0 °C?

Question

How long will it take a 500-W heater to raise the temperature of 400 g of water from 15.0 °C to 98.0
°C?

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Minh Khuê 6 months 2021-08-09T07:56:38+00:00 1 Answers 13 views 0

Answers ( )

    0
    2021-08-09T07:58:31+00:00

    Explanation:

    E=(98-15)×400×4.2

    E=139440J

    t=E/P

    E=139440/500=278.88s

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