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Many cultures around the world still use a simple weapon called a blowgun, a tube with a dart that fits tightly inside. A sharp breath into the end of the tube launches the dart. When exhaling forcefully, a healthy person can supply air at a gauge pressure of 6.0 kPa.
What force does this pressure exert on a dart in a 1.4-cm-diameter tube?

Respuesta :

Answer:

force is 0.923 N

Explanation:

given data

gauge pressure = 6.0 kPa = 6 × [tex]10^{3}[/tex] Pa

diameter = 1.4 cm = 1.4 × [tex]10^{-2}[/tex] m

to find out

What force does this pressure exert

solution

we know here force formula that is

force = pressure × area

here pressure is given and area will be area = πr² = π× [tex]\frac{1.4*10^{-2}}{2}[/tex]

so

force = 6 × [tex]10^{3}[/tex] ×π × [tex]\frac{1.4*10^{-2}}{2}[/tex]

force = 0.923 N

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