An ideal gas is maintained at a constant pressure of 70,000 pa during an isobaric process and its volume decreases by 0.2m^3. what work is done by the system on its environment? a. 14,000 jb. 350,000 jc. -14,000 jd. -35,000 j

c. -14,000

Explanation:

Workdone by gas is the product of the pressure and the volume where there is a change of volume.

If v1 is the initial volume of the gas and v2 is the final volume of gas, the work done

= p(v2 - v1)

where p is the pressure

and p = 70,000 Pa

Given that volume decrease by 0.2m^3, v2 - v1 = -0.2

Workdone = 70000 ( -0.2)

Workdone = -14,000 J

Option c. -14,000

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete