The change in surface area of Gaussian surface with radius (r) is 8πr.
<h3>
Electric field from Coulomb's law</h3>
The electric field experienced by a charge is calculated as follows;
where;
- E is the electric field
- Q is the charge
- r is the radius
The electric field reduces by a factor of 
<h3>Surface area of a Gaussian surface;</h3>
The surface area of a sphere is given as;
<h3>Change in area with r</h3>
Thus, the change in surface area of Gaussian surface with radius (r) is 8πr.
Learn more about area of Gaussian surfaces here: brainly.com/question/17060446
The answer is C because <span>this movement is caused by the heat in Earth and creates </span>convection currents. <span>Convection currents in the asthenosphere cause movement of Earth's tectonic plates. </span>
Answer:
B) Physical properties cannot be observed without changing the identity of the material.
Answer:
PE = mgh = 13.6(9.81)(1.25) = 166.77 ≈ 167 J
Explanation:
Answer:
True
Explanation:
The heat trasnfer caused by the bulk movement of molecules of fluids is known as convection. Convection has two constituent process advection and diffusion. Examples of natural convection include atmospheric circulation, weather, oceanic circulation, mantle convection etc.
In forced convection the movement of fluid is caused by an external device (source). A fan, pump used to move fluid are external sources that cause fluid movement, the movement of fluid is not happening naturally.
