A gas is compressed under isobaric conditions, and its volume changes from 9.0 10-3 to 2.0 10-3 m3. The pressure of the gas is 1.0 105 Pa.
(a) Determine the work done (including the algebraic sign).
(b) How much work is done (including the algebraic sign) if the gas then expands from 4.0 10-3 to 6.0 10-3 m3 under isobaric conditions?