Question

In the American engineering system of units, the viscosity can gave the units of (lbf)(hr)/(ft^2), while in the handbook the units are (g)/(cm)(s). Convert a viscosity of 20.0 (g)/(m)(s) to the given American Engineering units?

Answer 1

1 gram = 0.0022046 lbs
1m = 39.37 ins

Answer 2

1 m = 3.28083 ft

Answer 3

You can figure out any conversion factor this way, for instance:

\[1 \text{ hour} = 60 \text{ min}\]

So if you want to convert hours to minutes, like

\[120 \text{ minutes}\] you want to divide out the minutes, so we take our first equation and divide both sides by minutes to get:

\[\frac{1 \text{ hour}}{60 \text{ minutes} }=1\]

See, we can multiply anything by 1 and it doesn't change it, and this thing on the left is equal to 1!

\[120 \text{ minutes}*1 =120 \text{ minutes}*\frac{1 \text{ hour}}{60 \text{ minutes} } = 2 \text{ hours} \] The minutes divide out just like anything divided by itself is also 1.

\[\frac{7}{7}=1\]
\[\frac{minutes}{minutes}=1\]
\[\frac{elephants}{elephants}=1\]

Answer 4

\[\frac{ 20g }{ (m)(s) } \times \frac{ 0.0022046lbs}{ 1g } \times \frac{ 1m }{ 3.28083 ft. } \times \frac{ 60s }{ 1 \min.} \times \frac{ 60 mins.}{ 1 hr }\]

Answer 5

is it correct? :)

Answer 6

how can convert it into \[ft^2\] for ft? if the given length is m not\[m^2\]

Answer 7

@Empty

Answer 8

and how can i put hr into the numerator?

Answer 9

can you help me @ganeshie8 and @iGreen ? :)

Answer 10

have another look at your question - you have ft^2 in american system but m in the metric - is this correct?

Answer 11

looks like thers a typo somewhere

Answer 12

yeah :(, i'll just ask my professor about this one. Thank you so much :)