Answer:
electrons
Explanation:
The total charge Q is the sum of the charge of the N electrons contained in the sphere:
charge of a electron
We solve to find N:
Mechanical advantage describe how simple machines?
2 answers:
Answer:C: multiply the input force
Explanation:
A lever is a simple machine consisting of a bar pivoted or supported at a point (known as Fulcrum) about which it can rotate to perform the task.
Mechanical Advantage MA =
where E→ length of effort arm from the pivot
L→ length of load arm from the pivot
→ force on the end of effort arm
→ force on the end of load arm
<u>By the law of conservation of angular momentum:-</u>
=
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Answer:
Option c) are perpendicular to the electric field
Explanation:
Equipotential surfaces are perpendicular to the electric field. the electric field lines are projected outwards from the equipotential surface, i.e., the lines of the electric field are at 90 to the equipotential surface.
Equipotential surface are those surfaces that have the same potential at any point on the surface. Thus the potential difference at any point on the surface is zero due to same potential.
Any charge particle on this surface will move in a perpendicular direction to the Coulombian force. No work is done by the force on a particle moving on an equipotential surface.