# Converting kilometers to micrometers

1. Aug 20, 2008

### afcwestwarrior

1. The problem statement, all variables and given/known data
how many microns make up 1 K.m

2. Relevant equations
prefixes for SI units

3. The attempt at a solution
i really can't attempt it because i have no idea what to do, i forgot how to do this stuff

2. Aug 20, 2008

### Dick

Why don't you look up what a micron is first? Then km as well. And figure out how many of one is in the other?

3. Aug 20, 2008

### afcwestwarrior

ok dokie

4. Aug 20, 2008

### Dick

I'm starting to have problems taking you seriously.

5. Aug 20, 2008

### afcwestwarrior

one micron equals 10^-6 meters and 1 km equal 10^3 meters

6. Aug 20, 2008

### afcwestwarrior

10^9 microns equal 1 km

1,000m/1km * 1 micro u/1*10^-6=10^9

7. Aug 20, 2008

### afcwestwarrior

It equal 10^9 or 1,000,000,000

8. Aug 20, 2008

### Dick

Sure thing. That wasn't so hard, was it?

9. Aug 20, 2008

### afcwestwarrior

No it wasn't. I'm very rusty on my physics and Calculus.

10. Aug 20, 2008

### Dick

Practice makes perfect. You might try finding a book with solutions and practicing offline. I don't think all of these problems need posting.