Mass of a sample of gas doesn't change, no matter what happens to its pressure, volume, or temperature.
Answer:
33 N
Explanation:
v = Velocity of fluid = 8+2 = 10 m/s
= Density of fluid = 1.2 kg/m³
C = Coefficient of drag = 1.1
A = Cross sectional area = 0.5 m²
Drag force is given by
![F=\frac{1}{2}\rho CAv^2\\\Rightarrow F=\frac{1}{2}\times 1.2\times 1.1\times 0.5\times (8+2)^2\\\Rightarrow F=33\ N](https://tex.z-dn.net/?f=F%3D%5Cfrac%7B1%7D%7B2%7D%5Crho%20CAv%5E2%5C%5C%5CRightarrow%20F%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%201.2%5Ctimes%201.1%5Ctimes%200.5%5Ctimes%20%288%2B2%29%5E2%5C%5C%5CRightarrow%20F%3D33%5C%20N)
The drag force on the athlete is 33 N
We know that:
d=vt
d=32mph*5h
d=160mi
The reason why icebergs float in the ocean has to do with temperature. Icebergs are colder than the ocean water and therefore the cold water is less dense than the warm water and this causes the Iceberg to float.