Answer: I & II
Explanation: gauss law states that the total amount of electric flux through a closed surface equals the net electric charge enclose divided by permittivity of free space.
Φ = ∫E. dA = Q/ε0
Φ = electric flux
ε0 = permittivity of free space
E= strength of electric field.
dA = fraction of area that flux passes through.
Q = net charge enclosed.
Hence a zero net flux is only possible when the net charge is equals to zero and when there is no charge in the enclosed surface.
Since Power is equal to the product of Force and Displacement all over time, George needs 6.86 W of power to push the wheelbarrow. Power can also be calculated by multiplying Force applied on the object and the speed of the object being applied of the force.
Electrons would be found outside the nucleus protons and neutrons are on the inside of the nucleus.
Power is Work/Time. Now that we have this formula, we can work this problem out.
Our work is 2,400J, and our time is 6s.
Divide 2400J by 6s.
2400/6 = 400.
Our power is 400W (watts).
I hope this helps!
