Answer:
Mercury
Explanation:
The force of gravity is equal to the mass times the centripetal acceleration:
Fg = m v² / r
Also, the force of gravity is defined by Newton's law of universal gravitation, which states the Fg = mMG / r², where m and M are the masses of the objects, G is the universal constant of gravitation, and r is the distance between the objects.
mMG / r² = m v²/ r
MG / r = v²
This means the square of the orbital velocity is equal to the mass of the sun times the universal constant of gravity divided by the orbital radius. So whichever planet has the smallest orbital radius will have the highest orbital velocity. Of the four options, that would be Mercury.
Answer:
False
Explanation:
Let the initial amount is No.
Let t be the half life.
Half life is the time in which the initial amount of the substance becomes half and the remaining amount in teh sample is also half.
After one half life, the remaining amount is No / 2
After two half lives, the remaining amount is No / 4
After three half lives, the remaining amount is No / 8.
So, the statement is false.
Answer with Explanation:
We are given that
a.x=-0.2 m
Where 
Net electric field=E+E'=4500+1237.5=5737.5 N/C
b.x=0.20 m
Net electric field=E-E'=4500-1237.5=3262.5 N/C
c.y=0.20 m
E=1237.5 N/C
Net electric field=
