Energy from the Sun arrives at the top of the Earth’s atmosphere with an intensity of 1.30 kW/m2. How long does it take for 1.97 109 J of en

Question

Energy from the Sun arrives at the top of the Earth’s atmosphere with an intensity of 1.30 kW/m2. How long does it take for 1.97 109 J of energy to arrive on an area of 1.00 m2? This is the average monthly electrical energy consumption of a family of four in the United States.

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Thu Thủy 4 weeks 2021-08-18T03:18:43+00:00 1 Answers 0 views 0

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    2021-08-18T03:20:00+00:00

    Answer:

    1.377\times 10^6s

    Explanation:

    The energy arriving in a specific area is defined as the radiating power multiplied by time:

    E=PT

    #The radiating power delivered to a specific area equals the intensity per square unit area multiplied by the area:

    P=pA

    #Equating the two expressions, we have:

    E=pAT

    #We then calculate the time it takes for the energy to be delivered:

    T=\frac{E}{pA}\\\\=\frac{1.79\times 10^9J}{1.30\times 10^3\times 1.0}\\\\=1.377\times 10^6s

    Hence, it takes 1.377\times 10^6s for the energy to be delivered.

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