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9 August, 08:50

A pump lifts water from a lake to a large tank 20 m above the lake. How much work against gravity does the pump do as it transfers 5.0 m^3 if the density is?=1000kg/m^3?

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Answers (2)
  1. 9 August, 09:04
    0
    980 kJ

    Explanation:

    It takes the work against gravity does the pump do as it transfers from 5.0 m^3 the density is 980kj.
  2. 9 August, 09:20
    0
    980 kJ

    Explanation:

    Work = change in energy

    W = mgh

    W = (1000 kg/m³ * 5.0 m³) (9.8 m/s²) (20 m)

    W = 980,000 J

    W = 980 kJ

    The pump does 980 kJ of work.
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