Answer:
work will be positive when it is under polytropic expansion process
Explanation:
It states a polytropic process with n equal to 1.67. there is a polytropic expansion that mean work is positive and if it was polytropic compression then it would be negative
[tex]PV^n = const[/tex]
[tex]P_1V_1 = P_2V_2[/tex]
Also work during the process of polytropic is given as
[tex]W_{1-2} =\frac{P_1V_1 -P_2V_2}{n-1}[/tex]
the work will be positive when it is under the polytropic expansion process
