Work = Force * distance
Force = 70 N
Work = 3500 J
3500 = 70d
d = 3500/70 = 50 m
He proposed the sun-centered model of the solar system.
Answer:
The direction angle θ of the resultant in the Polar (positive) specification is then θ = α + 60°. The Law of Cosines is used to calculate the magnitude (r) and the Law of Sines is used to calculate the angle (α).
To solve this problem we will apply the concepts related to the balance of Forces, the centripetal Force and Newton's second law.
I will also attach a free body diagram that allows a better understanding of the problem.
For there to be a balance between weight and normal strength, these two must be equivalent to the centripetal Force, therefore
Here,
m = Net mass
= Angular velocity
r = Radius
W = Weight
N = Normal Force
The net mass is equivalent to
Then,
Replacing we have then,
Solving to find the angular velocity we have,
Therefore the angular velocity is 0.309rad/s
Answer:
The primary purpose in creating national parks is to protect the land from development and pollution.
Explanation:
National parks are owned by the national government. This areas are strictly reserved for habitat of wild animals.
The main purpose for creating national parks is to reserve some space for nature. This area is protected from pollution and development.
Thus, answer for given question is protect the land from development and pollution.
