The u.s governmwnt is considered a federal system because
a. the people elect national officials
b. bith national and state government exist within the nation
c. foreign policy is handled by states gov
d. each state has equal represantation in the u.s senate

The resulting pressure of the air in the cylinder is 4 atmosphere.

Step-by-step explanation:

Given : If a tire pump whose cylinder has a volume of 2.0 liters at 1 atmosphere of pressure  compresses the air to a volume of 0.50 liters without releasing any of the air.

To find : What is  the resulting pressure of the air in the cylinder?

Solution :

Let and represent the pressure and volume of the gas at an initial state .

and represent the pressure and volume of the gas at an final state .

According to Boyle's Law,

Substitute,

Therefore, the resulting pressure of the air in the cylinder is 4 atmosphere.