Answer:
![C=2.32\times 10^{-4}\ Ns^2/m^2](https://tex.z-dn.net/?f=C%3D2.32%5Ctimes%2010%5E%7B-4%7D%5C%20Ns%5E2%2Fm%5E2)
Explanation:
It is given that,
Mass of the golf ball, m = 46 g = 0.046 kg
Terminal speed of the ball, v = 44 m/s
The drag force, ![F_r=Cv^2](https://tex.z-dn.net/?f=F_r%3DCv%5E2)
Where, C is the drag coefficient. At terminal speed, the weight of the ball is balanced by the drag force.
![Cv^2=mg](https://tex.z-dn.net/?f=Cv%5E2%3Dmg)
![C=\dfrac{mg}{v^2}](https://tex.z-dn.net/?f=C%3D%5Cdfrac%7Bmg%7D%7Bv%5E2%7D)
![C=\dfrac{0.046\times 9.8}{(44)^2}](https://tex.z-dn.net/?f=C%3D%5Cdfrac%7B0.046%5Ctimes%209.8%7D%7B%2844%29%5E2%7D)
![C=2.32\times 10^{-4}\ Ns^2/m^2](https://tex.z-dn.net/?f=C%3D2.32%5Ctimes%2010%5E%7B-4%7D%5C%20Ns%5E2%2Fm%5E2)
Hence, this is the required solution.
Answer:
a) 0.3965 j
b) 0.3112 m
Explanation:
The picture attached explains it all. Thank you
Answer:
Explanation:
the one thrown below the horizontal is going straight down, while the one above the horizontal will experience a projectile motion which will makes it move farther away from the building where it was projected.
Answer:
The alternative energy sources are defined as those resources that are used in place of the natural and non-renewable resources. This resources plays an important role in the conservation of natural resources.
The fossil fuels are the resources on which the people are directly dependent. Burning up of these fossils leads to the emission of carbon, which has a direct impact on earth. A small increase in the amount of carbon dioxide can lead to the increase in the surface temperature of earth.
In addition to this, these fossil fuels such as coal, petroleum, oil and natural gases are found to be present in a limited proportion, and it is a very expensive process to obtain these resources, so sustainable development method must be adopted in order to save this natural resources for the future generation.
Some of the examples of alternative resources that are widely used in place of fossil fuels are wind energy, solar energy, tidal energy, biomass energy and bio-fuels.
Thus, it is very important to develop and use alternative resources.
Answer: 1.91*10^8 N/m²
Explanation:
Given
Radius of the steel, R = 10 mm = 0.01 m
Length of the steel, L = 80 cm = 0.8 m
Force applied on the steel, F = 60 kN
Stress on the rod, = ?
Area of the rod, A = πr²
A = 3.142 * 0.01²
A = 0.0003142
Stress = Force applied on the steel/Area of the steel
Stress = F/A
Stress = 60*10^3 / 0.0003142
Stress = 1.91*10^8 N/m²
From the calculations above, we can therefore say, the stress on the rod is 1.91*10^8 N/m²