The four tires of an automobile are inflated to a gauge pressure of 2.2 ✕ 105 Pa. Each tire has an area of 0.022 m2 in contact with the ground. Determine the weight of the automobile.

And solving for F we got:

And replacing we got:

And if we want the mass we can solve from this formula:

With g=9.8 m/s^2 the gravity

Explanation:

For this case we can find the total area of the 4 tires and we got:

Now we know that the total pressure is:

And then we can find the weight with from this formula:

And solving for F we got:

And replacing we got:

And if we want the mass we can solve from this formula:

With g=9.8 m/s^2 the gravity

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )