1. Water at 4 C has a density of 1 g/mL, so the bottle will have 750 g of water in it. Thus the bottle + water has a total mass of 839 g.Originally Posted bymellisaj12

2. The object is a cone. (I can't draw the pictures, sorry!)

-Dan

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- August 10th 2006, 04:17 AM #1

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Originally Posted by**topsquark**

Brilliant, Dan!

I had difficulty with the "oval" (ellipse) but you made it*so*obvious.

Code:A * / \ / \ / \ / *D / * \ / * \ / * \ B* - - - - - - - *C

is a side view of a circular cone (it doesn't have to be "right").

A slanted plane cut through the plane, passing through and ,

. . and the top portion is removed.

From the front, we see

From the top, we see a circle with diameter

From the left, we see an ellipse with major axis

Does this have a*name*? . . . other than "circular conical wedge"?

- August 10th 2006, 08:25 AM #8Originally Posted by
**Soroban**

I appreciate the comment of "brilliant" but I can't take credit for it. Any Intermediate level Mechanics book has a picture of this, owing to motion under an inverse square force law. This diagram shows the different types of orbit due to Newton's Law of Gravitation...the "conic sections." Which means you can get a parabola and a hyperbola as well, given the correct angle for the cross section. (The cone is "doubled" by continuing it through its point.)

-Dan