The thickness of a piece of paper is .0036 inches. Suppose a certain book has 6.022 x 10^23 number of pages; calculate the thickness of the book in lightyears. A light year is 3 x 10^8 m/s.
Somebody please show me how to solve this
2006-08-23 09:56:06 · 3 answers · asked by dingdong 1 in Science & Mathematics ➔ Chemistry
That's a pretty thick book- a mole of pages! Also, I'm not sure why you said a lightyear(distance) is 3X10^8 m/s(velocity). Here is a Lightyear: 9.461×10^15 m, or 372.462×10^15 in.
Ok, now that we've got the right info...
.0036in/pg x 6.022x10^23pg = 2.168x10^2in
2.168x10^2in x 1ly / 372.462x10^15in = 5820.513ly
or 5.825x10^3 lightyears
2006-08-23 10:03:04 · answer #1 · answered by smartee 4 · 0⤊ 0⤋
thickness in inch = .0036 * 6.022 x 10^23 = x
convert x to cm
then x/lighyear = x/ (3 x 10^8) = some thing which is the answer
2006-08-23 10:05:35 · answer #2 · answered by ___ 4 · 0⤊ 0⤋
I would multiply 6.022 X 10^23 by the thickness of a single page in inches. That'll give you the thickness in inches of that many pages. Then convert inches to centimeters and then convert that to meters. The number you gave (3 X 10^8 m/s) is the speed of light, not the length of a light year. If you want the length of a light year, take that speed of light in m/s, multiply it by 60s/min, by 60 min/hr,by 24 hr/day, and then by 365 d/yr and you have the length of a light year. The thickness of you mole of pages is going to be a whole lot more than the length of a lightyear.
2006-08-23 10:04:54 · answer #3 · answered by hcbiochem 7 · 0⤊ 0⤋