i have two maths questions in my homework im stuck on.
1.an empty 750 ml glass bottle has a mass of 89 grams when it is full of water what is its mass.
2. here are three cross sections of the same solid. cirlce,triangle and oval. name it
Originally Posted by topsquark
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"?
It probably does. I never did 3D geometry so I'm a little uncertain.Originally 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.)