A box-shaped metal can has dimensions 5 in. by 19 in. by 4 in. high. All of the air inside the can is removed with a vacuum pump. Assuming normal atmospheric pressure outside the can, find the total force (in lb) on one of the 5-by-19 in. sides. (Enter the magnitude.)

The force is  

Explanation:

From the question we are told that

    The length of the box is  

    The width of the box is  

     The height is  

The pressure experience on one of the sides is mathematically represented as

Where A is the area of the box which is mathematically evaluated as

substituting values

This pressure is equivalent to the atmospheric pressure which has a constant value of  

This implies that

=>  

=>