Avery powerful vacuum cleaner has a hose 2.86 cm in diameter. with the end of the hose placed perpendicularly on the flat face of a brick, what is the weight of the heaviest brick that the cleaner can lift?

F = 75.49 N

Explanation:

given,

atmospheric pressure Po = 1 atm

                                      Po = 101325 Pa

diameter =3.08 cm,                    

radius  = 1.54 cm            

1 cm = 0.01 m                    

1.54 cm = 0.0154 m            

Force = Pressure x area                        

area = π r²

Force =  101325 Pa   x π x 0.0154  x 0.0154    

F = 75.49 N                                                      

Weight of the heaviest brick that the cleaner can lift is F = 75.49 N

answer; /// i believe that the correct answer is (c)

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )