A point charge of magnitude q is at the center of a cube with sides of length L.a) What is the electric flux through each of the six faces of the cube?b) What would be the flux through a face of the cube if its sides were of length L1?
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Ответ:
Explanation:
The charge q is placed at the center of the cube of side L
According to Gauss's law the flux through any closed surface is q/ε₀
here q is the charge enclosed .
In this case cube has the six faces . The flux through each face = q/6ε₀
In the second case The cube has the face with length L₁
The flux through each face = q/6ε₀
Thus flux through the cube does not depend upon the size of the cube .
Ответ:
Explanation:
Initial velocity (u) = 2 m/s
Displacement (s) = 2.5 m
Acceleration due to gravity(a)=9.81m/s^2
Final velocity (v) = ?
Now, formula is given by
v² = u² + 2×a×s
v² = 2² + 2×9.81×2.5
v² = 4 + 49.05
v² = 53.05
v = √53.05
v = 7.3 m/s