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10 January, 17:06

A book with a weight of 12 N rests on its back cover. If the back cover measures 0.21 m by 0.28 m, how much pressure does the book exert?

A. 42 Pa

B. 57 Pa

C. 12.46 Pa

D. 204 Pa

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Answers (1)
  1. 10 January, 17:35
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    option D = 204 Pa

    Explanation:

    Given dа ta:

    Weight of book = 12 N

    Area of book = 0.21 m * 0.28 m = 0.0058 m²

    Pressure of book = ?

    Solution:

    formula

    pressure = force / area

    P = f / A

    now we will put the values in formula,

    P = 12 N / 0.0058 m²

    P = 204 Nm⁻² (Nm⁻² = Pa)

    P = 204 Pa
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