To **convert ****R**** **to** ****J•cm**^{-4 }

* Conversions needed*:

**kPa → N → J****km → m****→**cm

We also need to take note of the following when doing unit conversions:

*• Put units you need to cancel out on opposite places (*i.e.* if it’s in the numerator then put the conversion factor with the same unit in the denominator)*

*• Always raise the units to the necessary number*

R=0.0138 kPa*km^{-1}

Convert R to J*cm^{-4 }