Posted by **eddie** on Tuesday, February 17, 2009 at 12:33pm.

there is a cup with 75ml of orange juice. A marble was dropped into the cup and the level of the juice rose to 90 ml. Why did this happen? Find the volume of the marble. Use math and show/label all work.

- math -
**tomar**, Tuesday, February 17, 2009 at 12:47pm
what is 387 rounded to nearest 10?

- science -
**bobpursley**, Tuesday, February 17, 2009 at 12:47pm
We will be happy to critique your thinking on this. What is more interesting is what happened to the weight of the marble.

- science -
**DrBob222**, Tuesday, February 17, 2009 at 12:47pm
There is a law is physics called the law of impenetrability. In its simplest terms, it says that two objects can't occupy the same space at the same time. In reference to the orange juice and marble, both juice and marble can't occupy the same space at the same time. So if the OJ occupied 75 mL without the marble and it occupied 90 mL with the marble, it should be obvious that the marble took up 15 mL of space so that is the volume of the marble. You will want to draw a diagram showing the glass, the OJ at 75 mL, the marble separately, the volume of OJ AND marble, etc. You can make a very interesting series of drawings to show what you want to show. Good luck.

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