Answer:
a
The sign on the charge is positive sign
According to Flemmings Left Hand rule
The index finger which represents the Magnetic field(From the question ) is pointing vertically upward so the middle finger would be pointing east ward i.e in the positive x-axis and the thumb also would be pointing toward east and it represents the force acting on the charge
The diagram that illustrates this is shown in the first uploaded image
b
The magnetic force is given as
[tex]F = 0.053 \ N[/tex]
Explanation:
From the question we are told that
The magnitude of the magnetic field is [tex]B = 1.35 T[/tex]
The magnitude of the charge is [tex]q= 8.50 \mu C = 8.50*10^ {-6}C[/tex]
The speed is [tex]v= 4.68 km/s[/tex]
Generally the force is mathematically represented as
[tex]F = q * v* B[/tex]
Substituting values
[tex]= 8.5*10^{-6}* 1.35 *4.68 *1000[/tex]
[tex]= 0.053 N[/tex]
