Calculate the magnetic field strength at the ground. Treat the transmission line as infinitely long. The magnetic field strength is then given by:
B = μ₀I/(2πr)
B = magnetic field strength, μ₀ = magnetic constant, I = current, r = distance from line
Given values:
μ₀ = 4π×10⁻⁷H/m, I = 170A, r = 8.0m
Plug in and solve for B:
B = 4π×10⁻⁷(170)/(2π(8.0))
B = 4.25×10⁻⁶T
The earth's magnetic field strength is 0.50G or 5.0×10⁻⁵T. Calculate the ratio of the line's magnetic field strength to earth's magnetic field strength:
4.25×10⁻⁶/(5.0×10⁻⁵)
= 0.085
= 8.5%
The transmission line's magnetic field strength is 8.5% of that of earth's natural magnetic field. This is no cause for worry.
Natural resources are found in abundance in the US.
Explanation:
The United States boasts of rich renewable and non-renewable natural sources.
Land: Large landmass is a huge advantage and being under one nation or government leads to great industrial, agricultural and economic development
- Farmland: America boasts huge farmlands where mechanized agriculture is done on a large scale
- Minerals: A number of minerals like copper, gold, iron ore, coal etc are found in abundance
- Forests: The rich and different types of forests found in North America provides huge resources of timber
Water: The large coastline, huge lakes, and rivers all form a great resource for fishing, water recreational activities, oil drilling and other industries.
Energy sources: The U.S. is rich with energy sources like coal, oil, petroleum, and natural gas. Mining, especially of coal, is one of the chief industries in the U.S. The U.S. is a key oil producer in the World.
The concept used to solve this problem is the conservation of momentum and the conservation of energy.
For conservation of the moment we have the definition:

Where,
m = Mass
= Initial velocity for object 1
= Final velocity
Replacing the values we have to,



By conservation of energy we know that the potential energy is equal to the kinetic energy then





Therefore after the collision the height when the combined chinks will go is 1.837m