To understand the meaning of the variables in Gauss's law, and the conditions under which the law is applicable. Gauss's law is
1 answer:
Answer:
Over a closed surface
Explanation:
Gauss's law: It states that the total electric flux passing through the closed surface is equal to times the total charge enclosed within the surface.
Mathematically representation :
Electric flux=
Where q=Total charge enclosed within surface
=Permittivity of vacuum
Therefore,the integral in Gauss's law should be evaluated over a closed surface.
Circle in the integration mean closed we can say that closed integral.
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The options of the question are missing. I have attached it.
Answer:
Satellite in option B will have the greatest speed.
Explanation:
From kepplers third law, we know that
V² = GM/R
Thus, v = √(GM/R)
Where;
v is velocity
G is gravitational constant
M is mass
R is radius
Looking at the options, let's start from the first one;
Option A
Here, mass = (1/2)m and radius = R
So, v = √(GM/R) thus v = √(G(m/2)/R) = √(Gm/2R)
Option B
Here, mass = m and radius = (1/2)R
Thus v = √(Gm/(R/2)) = √(2Gm/R)
Option C
Here, mass = m and radius = R
Thus v = √(Gm/R)
Option D
Here, mass = m and radius = 2R
Thus v = √(Gm/(2R))
Now, inspecting all the options, it's clear that option B will have the greatest velocity because it's numerator is the biggest and will in turn lead to higher velocity.
