An automobile tire is filled to 32 psi at an air temperature of 40° f. a. after the car is driven for some time, the temperature of the air is 145° f. what is the pressure, if you assume the volume of the tire is constant? b. if a person wants to maintain a pressure of 32 psi, what should the initial air pressure should be put in the tire?

Answer :

(a) The final pressure will be 38.73 psi

(b)  The initial pressure will be 26.44 psi

Explanation :

(a) Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

or,

where,

= initial pressure of gas = 32 psi

= final pressure of gas = ?

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above equation, we get:

Thus, the final pressure will be 38.73 psi

(b) Now we have to calculate the initial air pressure should be put in the tire.

where,

= initial pressure of gas = ?

= final pressure of gas = 32 psi

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above equation, we get:

Thus, the initial pressure will be 26.44 psi

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

hope this (: