In a Steam Engine the Pressure and Volume of Steam $P V ^ { 1 / 4 } = k$

question 89

Short Answer

In a steam engine the pressure and volume of steam satisfy the equation $P V ^ { 1 / 4 } = k$ , where $k$ is a constant. (This is true for adiabatic expansion, that is, expansion in which there is no heat transfer between the cylinder and its surroundings.) Calculate the work done by the engine (in ft-lb) during a cycle when the steam starts at a pressure of $160 \mathrm { lb } / \mathrm { in } ^ { 2 }$ and a volume of $100 \mathrm { in } ^ { 3 }$ and expands to a volume of $1000 \mathrm { in } ^ { 3 }$ . Use the fact that the work done by the gas when the volume expands from $V _ { 1 }$ to volume $V _ { 2 }$ is
$$W = \int _ { V _ { 1 } } ^ { V _ { 2 } } P d V$$

Understand the importance of orderly presentation of graphics in written reports.

Recognize the role and effectiveness of different types of graphics (e.g., charts, tables, maps) in enhancing communication.

Know that graphics must be introduced properly to avoid misinterpretation of data.

Identify the best practices for incorporating visuals in reports, including numbering and placement.

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