A system consists of a gas in an enclosed cylinder attached to a movable piston. The system is initially at 63 L and then is compressed to 3

Question

A system consists of a gas in an enclosed cylinder attached to a movable piston. The system is initially at 63 L and then is compressed to 31 liters. Determine the sign of work. Will it be a negative or positive

in progress 0
Thanh Hà 1 week 2021-07-16T06:29:14+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-16T06:31:00+00:00

    Answer:

    The sign of work will be negative.

    Explanation:

    The work of the system is given by:

     W = _{V_{i}}^{V_{f}}\int pdV = p(V_{f} - V_{i})

    Where:

    V_{f}: is the final volume = 31 L

    V_{i}: is the initial volume = 63 L

    p: is the pressure

    Even though we do not have the pressure value, by knowing the values of the initial and final volume we can predict the sign of work.            

     W = p(V_{f} - V_{i}) = p(31 L - 63 L) = -32p

    Therefore, the sign of work will be negative.

    I hope it helps you!

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )