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Math Fireworks. October 26, 2006 Lakeside Explosives 22 Autumn Lane Osgo,
UV 41111 Dear Lakeside Explosives, Here at Capstone it ...
... Macromedia Flash MX 2004, Macromedia Dreamweaver 2004, Macromedia Fireworks 2004,
and ... They focus on fundamentals?from reading comprehension to math to written ...
... (For those of you who slept through math at high school, the formula is v =
h*pi*r2. ... Also, fireworks retailers almost always carry lengths of safety fuse. ...
... The fireworks were made of small bamboo cases, and were filled with gunpowder, and
a fuse was put on one side. ... The Chinese developed math very well. ...
... The fireworks were made of small bamboo cases, and were filled with gunpowder, and
a fuse was put on one side. ... The Chinese developed math very well. ...
Submitted by Smithtree54 on December 4, 2006
Category: Technology
Words: 375 | Pages: 2
Views: 138
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October 26, 2006
Lakeside Explosives
22 Autumn Lane
Osgo, UV 41111
Dear Lakeside Explosives,
Here at Capstone it is our pleasure to help you with your new N-79 firecracker, hoping to give your customers truly more bang for their buck'.
To begin with I will tell you what the radius of the cylinder on the top of the N-79 was calculated to be and then will go through how we found this number. The radius we found was 1.4154683 cm, or 1.4 cm rounded to the nearest decimal point, the interval was found between 1.4 cm and 1.5 cm.
To begin with we had to determine what the total volume (cylinder + half a sphere) would be. Given the information that you at Lakeside will being using 10 grams of powder, and the powder you are using has a mass of .2g/cm³ we found the total volume to be 50 cm³.
10 grams * (1 cm³ / .2 grams) = 50 cm³
From there we had to form an equation to find the total volume of the half sphere and the cylinder in order to solve for a variable (x).
7חx² + ½ (4/3 ח x³) = 50 cm³
(Volume of cylinder + ½ volume of cylinder = total volume)
Using this equation we simplified the equation so that it would equal zero and we could make it a function that we could look at graphically. Thus we derived the equation:
7חx² + ½ (4/3 ח x³) - 50 cm³ = 0 = F(X)
We then used a graphing utility to plot the points and find out where the graph crosses the x axis (where y = 0, in coordinate (x, y)). It was shown that this occurs when x is between 1 and 2. From there we made a table with values, starting at 1 and increasing by .1 until we reached 2 as shown in the following figure:
x y
1.0 -25.91
1.1 -20.6
1.2 -14.71
1.3 -8.234
1.4 -1.15
1.5 6.5487
1.6 14.876
1.7 23.844
1.8...
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