Answer:
Explanation:
Given
Initial Moment of Inertia 
initial Spin 
Final Moment Moment of Inertia 
Conserving Angular momentum
When there is no air resistance, objects of different masses dropped from rest:
a.
fall with equal accelerations and with equal displacements.
Answer:
b) Springs oscillate with the same frequency,
Explanation:
expression for frequency of vibration of mass hanging from a spring is given as follows
f = 
k is force constant of spring and m is mass vibrating .
In the present case, if mass stretches the spring by x and remains balanced
mg = k x
g and x are same for both cases
will also be same for both cases .
Hence frequency of vibration will also be same for both the balls .
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.
