# *SIMPLE slope question on graphic - Units?

1. Jan 29, 2012

### nukeman

1. The problem statement, all variables and given/known data

I just want to be 100% sure I got this correct.

I have a log graph, and along the x axis I have diameter (in cm's) and up the y-axis I have period (in seconds).

I had to get the slope, which I got, but what are the units of the slope?

s/cm ???

2. Relevant equations

3. The attempt at a solution

2. Jan 29, 2012

### SammyS

Staff Emeritus
Let's see ... you waited 2 hours and 32 minutes before bumping. That's about 21 hours and 28 minutes short of what's required.

3. Jan 29, 2012

### SammyS

Staff Emeritus
Which axis is a logarithm? ... or are both?

4. Jan 29, 2012

### tiny-tim

hi nukeman!

a log is always dimensionless

even when it looks as if it's eg log(time), it's really log(time/time0)…

dimensionless!

so the logx (or is it logy?) axis has no units

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