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Topic: **Half a term paper****Question:**
I have noticed that if you rip paper in half while holding it in front of a dark surface, you may observe a wispy, white vapor sort of thing from the tear. I know the chemical makeup of the paper does not change. Is this simply very fine particles being released from the paper ripping or is it something else? It almost looks like smoke from a very small flame. Just curious as to the term for it.

July 21, 2019 / By Emylynn

yes, this is a common phenomenion. You will find this occurring with cloth, wood, and many substances including metal of all things. These are particles, atoms, or molecules which are set free and impelled with the mechanical destrucvtion . In the case of metals this is usually free electrons, ions, or atoms which of course cannot be seen withj the eye.

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HINT: Write what you know in a table. Variables: s = # of spiral notebook paper sold r = # of recycled notebook paper sold Given: spiral notebook paper for $2.50 each Means: 2.5 * s = 2.5s = value of spiral notebook paper sold Given: notebook paper made of recycled paper for $2.30 Means: 2.3 * r = 2.3r = value of recycled notebook paper sold Given: 50 of these types of paper Means: s + r = 50 Given: sold for a total of $118.60 Means: 2.5s + 2.3r = 118.6 You have 2 equations: s + r = 50 2.5s + 2.3r = 118.6 Solve the first one for s. s + r = 50 s = 50 - r Plug this into the second equation. 2.5s + 2.3r = 118.6 2.5(50 - r) + 2.3r = 118.6 125 - 2.5r + 2.3r = 118.6 125 - 118.6 = 2.5r - 2.3r 125 - 118.6 = 2.5r - 2.3r 6.4 = 0.2r 6.4 / 0.2 = r r = 32 Plug this solved r value into s = 50 - r to solve for s. s = 50 - r s = 50 - 32 s = 18 ANSWER: 18 of the spiral notebook paper and 32 of the recycled notebook paper were sold.

Let s = spiral and r = recycled s+r= 50 2.5s + 2.3r = 118.60 Solve the first equation for either variable. I chose s. s = 50 - r Now substitute into the second. 2.5(50-r) + 2.3r = 118.6 125 - 2.5r + 2.3 = 118.6 -.2r = -6.4 r = 32 s = 18 So 32 recycled and 18 spiral. Substitute these into the second equation to check our work. 2.5(18) + 2.3(32) = 118.60 45 + 73.6 = 118.60 118.60 = 118.60

If you are going to write in in a document on the blackberry then send it either through email, or when you attach your blackberry to the computer, if you have a document writer then you can transfer. I have a blackberry curve, and it takes such a long time typing in, that you would be better off typing it straight into your computer. Don't go down the lines of copying it from the internet, that will cause assessors to fail your paper due to "plagiarism". I once failed a student on their unit, as his assessment was copied completely from a cd which I also had. No marks and a complete re write in his own words. Good Luck

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