There's no reason for the gravitational forces between
the Earth and the satellite to suddenly disappear.
The statement is true.
Answer:
The magnitude of the force on the wire is 2.68 N.
Explanation:
Given that,
Length of the wire, L = 5 m
Magnetic field, B = 0.37 T
Angle between wire and the magnetic field, 
Current in the wire, I = 2.9 A
We need to find the magnitude of the force on the wire. The magnetic force in the wire is given by :

So, the magnitude of the force on the wire is 2.68 N. Hence, this is the required solution.
Answer:
0.012 J
Explanation:
We are given:
q = 0.0080C
Potential difference = 1.5V
W=qV
Substituting the values into the equation:
W=0.0080*1.5= 0.012J
linear charge density of system of two line charges is given as

now as we know that electric field due to a line charge at some distance from it is given by

so here we will first find the electric field of first line charge at the position of other line charge


now as we know that

here q = charge on the line charge system at which force is required
E = electric field on that system of charge where force is required
now we can find the charge by


Now using the above formula



so force on the part of wire is F = 0.0811 N