How.many deaths occur from air pollution yearly
1 answer:
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Answer:
since the direction of force is along south so the magnetic field must be upwards
Explanation:
Force on moving charge in magnetic field is given as
here we know this is force on proton
so we have
also we know that the velocity of charge is
now from above formula we have
since the direction of force is along south so the magnetic field must be upwards
Answer:
Explanation:
Distance of each of the charges from the center are equal . If this distance be d
d = .5 x length of diagonal of square
length of diagonal = 4√2
d = .5 x 4√2
= 2√2
potential at a point
V = k Q / r where k is a constant , Q is charge and r is distance of the point from the charge .
k = 9 x 10⁹
Total potential =
=
= 9 √2 x 10⁹ V .