Question

What is the pressure inside a balloon which is inflated in a single breath of 3.5 L. (radius of balloon = 9 cm). *

Answer 1

Answer:

for the first place in the evening

Answer 2

Given:

Since the balloon is inflated in a single breath, so, Force = 3.5N

Radius of Balloon = 9cm

To Find:

We have to find the pressure inside a balloon which is inflated in a single breath of 3.5L and the radius of the balloon is 9 cm.

Solution:

We know, the formula to calculate pressure is given by -

                                         $Pressure = \frac{Force}{Area}$

Here, radius (r) = 9cm = 9×$10^{-2}$m

Thus, $Area (A) =\pi r^{2}$

$\[\text{A}=\frac{22}{7}\times 9\times {{10}^{-2}}\times 9\times {{10}^{-2}}\]$

$A=0.0254m^{2}$

Also, Now replacing the value of Force and Area in the above - given formula of pressure, we get,

$Pressure=\frac{3.5}{0.0254}$

$Pressure = 137.8Pa$

Hence, the required value of pressure is $137.8$Pa.