Question

A tire is inflated to a gauge pressure of 30.0 psi. It must be added to the atmospheric pressure of 14.7psi to find the total pressure in the tire. Calculate the total pressure of the tire in pascals

Answer 1

The first step to solve this question is to calculate the total pressure by finding the sum of the pressure of the tire and the atmospheric pressure:

`30.0psi+14.7psi=44.7psi`

The total pressure is 44.7psi. Nevertheless, they ask for the pressure in Pascals, so the next step is to convert this pressure in psi to pascals using a conversion factor. We know that 1 psi equals 6894.76Pa, use this as a conversion factor to find the pressure in pascals:

`44.7psi\cdot(6894.76Pa)/(1psi)=308195.77Pa`

It means that the total pressure of the tire in pascals is 308195.77Pa.