What do you mean by the mechanical advantage of a leaver is 4.
2 answers:
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Explanation:
It is given that, a long, straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire.
The charge per unit length of the wire is and the net charge per unit length is
.
We know that there exist zero electric field inside the metal cylinder.
(a) Using Gauss's law to find the charge per unit length on the inner and outer surfaces of the cylinder. Let are the charge per unit length on the inner and outer surfaces of the cylinder.
For inner surface,
For outer surface,
(b) Let E is the electric field outside the cylinder, a distance r from the axis. It is given by :
Hence, this is the required solution.
Answer:
Resultant force, R = 10 N
Explanation:
It is given that,
Force acting along +x direction,
Force acting along +y direction,
Both the forces are acting on a point object located at the origin. Let the resultant force of the object is given by R. So,
Here
R = 10 N
So, the resultant force on the object is 10 N. Hence, this is the required solution.