Where r is the radius of balloon.
Here mass of woman = 68 kg
Mass of air displaced by a balloon with volume V = 1.29*V
Mass of helium inside balloon = 0.178*V
Total mass to be lifted by balloon = 68 +0.178*V
Buoyant force = 1.29V-0.178V=1.112V
So we have 1.112 V = 68+ 0.178*V
0.934 V = 68
V = 72.81 
\frac{4}{3} \pi r^{3}[/tex]= 72.81
r = 2.59 m
So radius of helium balloon = 2.59 m
Multiply 25 * 8 = 200
So the cheetah has gone 200 miles in 25 seconds
The answer is D. disorganized
Explanation:
Let us assume that moment about the pin and then setting it equal to zero as the rod is in equilibrium is as follows.
Moment = Force × Leverage
= 0
Therefore, we can conclude that the force (
) in the cable by assuming that the origin of our coordinate system is at the rod’s center of mass is 935.11 N.
