Question

Use dimensional analysis to determine the number of kilograms in 62 pounds. (Hint: 1 kg = 2.2 lbs)

136.4 kg
0.04 kg
281.8 kg
28.2 kg

Answer 1

Usually "dimensional analysis" is a fancy word for "rounding things to nice numbers and gussing."

Answer 2

Like, 2.2 * 62 is ugly. 2 * 60 is easy. What number there is closest to 120?

Answer 3

Er, wait, divide, don't multiply. 60/2. But same idea!

Answer 4

lol

Answer 5

@Directrix wht is your opinion on this

Answer 6

62/2.2 = 28.123 kg Yes?

@Starr_Dynasty

Answer 7

TO WIKIPEDIA WE GO
http://en.wikipedia.org/wiki/Dimensional_analysis

Answer 8

That article does not help at all.

Answer 9

yes

Answer 10

i believe that the answer is A its pretty much logical to me

Answer 11

You multiplied. You have to divide.

Answer 12

60/2 = 30
Which one is closest to 30?

Answer 13

neither

Answer 14

Use dimensional analysis to determine the number of kilograms in 62 pounds. (Hint: 1 kg = 2.2 lbs)

136.4 kg
0.04 kg
281.8 kg
28.2 kg

Answer 15

You don't think 28.2 is close to 30?

Answer 16

wait D

Answer 17

Ok. :P

Answer 18

sorry i was seeing more than one digits

Answer 19

All "dimensional analysis" really means, at least as I've ever heard it used, is to reduce everything to quantities you can grasp with simple mental math and make sure something is logical.

Answer 20

thnx

Answer 21

So, like that, don't try to work out 62/2.2, do 60/2 in your head.

Answer 22

That's what I said: 62/2.2 = 28.123 kg Yes?

Answer 23

ok i understand

Answer 24

u didnt explain of how u got your answer it just looked like numbers pretty much

Answer 25

Actually doing the division doesn't count! :P