Chapter 9, Problem 9.1P

a.

To determine

Convert the 500 mm Hg abs to N/m².

Answer to Problem 9.1P

  $N/m^2=66661.33$

Explanation of Solution

Given:

500 mm Hg abs

Calculation:

1 mm Hg is 133.322387415m Pascal

mm Hg to newton per meter square formula is:

  $\begin{array}{l}N/m^2=\frac{mmHg}{0.0075006}\\ N/m^2=\frac{500}{0.0075006}\end{array}$

  $N/m^2=66661.33$

b.

To determine

Convert the 720 torr to N/m².

Answer to Problem 9.1P

  $720torr=95992.12N/m^2$

Explanation of Solution

Given:

720 torr

Calculation:

1 torr is defined as 1/760 atm

Or 1 torr is 101325/760 pascals

  $\begin{array}{l}N/m^2=\frac{torr}{0.0075006}\\ N/m^2=torr\times 133.3224\\ N/m^2=720\times 133.3224\\ N/m^2=95992.12\end{array}$

c.

To determine

Convert the 14.696 lb/in² to N/m².

Answer to Problem 9.1P

  $14.696lb/i{n}^2=101322.67N/m^2$

Explanation of Solution

Given:

14.696 lb/in² abs

Calculation:

  $\begin{array}{l}N/m^2=\frac{psi}{0.00014504}\\ N/m^2=psi\times 6894.757\\ N/m^2=14.696\times 6894.757\\ N/m^2=101322.67\end{array}$

d.

To determine

Convert the 1 bar to N/m².

Answer to Problem 9.1P

  $1bar=100000N/m^2$

Explanation of Solution

Given:

1 bar

Calculation:

  $\begin{array}{l}N/m^2=\frac{bar}{0.000010000}\\ N/m^2=bar\times 0.000010000\\ N/m^2=bar\times 0.000010000\\ N/m^2=100000\end{array}$