Question

Proportionality
Need help with part C

Answer 1

use d = 0.62 * 10^9, and the k value you got , plug it into
\(T^2=kd^3\)
only T is unknown

Answer 2

Then convert to years?

Answer 3

yes, you will get answer in days
divide by 365 to convert it into years

Answer 4

So it is T^2 = 1.656x10^-19 * (0.62x10^9)^3
I got 198.663
so divided by 365 =
.544?

Answer 5

Nope, something is wrong there.

Answer 6

http://www.wolframalpha.com/input/?i=1.656*10%5E-19+*+%280.62*10%5E9%29%5E3

Answer 7

But it says1.656x10^-19 on part B.

Answer 8

yeah, and that divided by 365 will give
http://www.wolframalpha.com/input/?i=%5B1.656*10%5E-19+*+%280.62*10%5E9%29%5E3%5D%2F365

Answer 9

so many years :O

Answer 10

Thank you. Thats what I was thinking!!!!!

Answer 11

welcome ^_^

Answer 12

Can you show my part c here?

Answer 13

Is that all? Thanks phi.

Answer 14

yep, thats it

Answer 15

So just 6*14?

Answer 16

make sure the question does not change the x distance

Answer 17

oops, the distance x is the difference between unstretched 11 cm and 14 cm
so use x=3

Answer 18

yeah, 11 to 16 is 5
so, 11 to 14 will be 3
x=3

Answer 19

I understand now. Thanks.