First slide

Work

Question

An ideal gas expands in volume from 1 × 10^-3m³ to 1×10^-2m³ at 300 K against a constant pressure at 1 × 10⁵ Nm^-2. The work done is

Easy

Solution

W = -1x10⁵ Nm^-2[10^-2-10^-3]m³
    = -10⁵ Nm^-2 [ 9x10^-3]m³
    = - 9x10²Nm
    = -900 J

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