- #1

- 140

- 0

## Homework Statement

1. What is the meaning of Planck’s units? Hint: Compare the strength of the 4 fundamental forces.

2. Calculate the Planck’s dimensions as a function of the SI units.

3. What are the dimensions of the human being in terms of Planck dimensions?

## Homework Equations

Plancks's units defined in terms of the speed of light (c), the quantum of action (h/2pi), and the Newtonian gravitational constant G

strength of electromagnetic force [tex]\alpha = e/(hc/2pi)[/tex]

strength of gravitational force is G

## The Attempt at a Solution

1. I suppose the meaning of the planck units is that if they're set to unity while calculating a fundamental force (e.g. F=G*m*m/r^2), you wouldnt need a constant (such as G) to get the right number for force. However i cant figure out how im supposed to compare fundamental force strengths to show that.

2. The constants describing the planck units are already described in SI units. So i dont understand what im asked to do then.

3. This question i dont understand at all....

Thanks a lot to whoever helps.