- #1

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I do not get this problem at all how do u start please help?

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- Thread starter dg_5021
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- #1

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I do not get this problem at all how do u start please help?

- #2

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HINT:Volume=Area*height,assuming cubes making up a rectangular paralelipiped.

Daniel.

- #3

Q_Goest

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You can also assume the 1 cubic meter of oil has the same volume regardless of what shape it's in. So the volume of the oil slick after it is spread out is equal to the volume of 1 cubic meter.

Does that help?

- #4

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So even "layer" is fuzzy.

Anyway,the wording is misleading and profoundly incorrect.

Daniel.

- #5

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I do not get this problem at all how do u start please help? sorry i meant micro

- #6

HallsofIvy

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(First convert 0.50 micrometers to meters. Then plug the numbers into the equation and solve for r.)

- #7

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Hold it,Halls,they said the molecules are cubes,not rectangular cylinders...

Daniel.

Daniel.

- #8

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r= ((3.1416)(5E5)) = 1.5708E6 m^2

Like this?

Because in the back of the book the answer is 2.0E6 m^2

Like this?

Because in the back of the book the answer is 2.0E6 m^2

- #9

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help please?

- #10

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help please?

- #11

Q_Goest

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so Area = Volume/Depth

Depth is 0.5 mm

Volume is 1 m^3 (or 1000mm*1000mm*1000mm) = 1.0 E9 cubic mm (1.0 E9 mm^3).

So Area = 1.0 E9 mm^3 / 0.5 mm = 2.0 E9 mm^3

Book is incorrect.

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