A total electric charge of 3.50nC is distributed uniformly over the surface of a metal sphere witha radius of 24.0 cm. If the potentialis zero at a point at infinity, find the value of the potential atthe following distances from the center of the sphere.
(a) 48.0 cm
(b) 24.0 cm
(c) 12.0 cm

a displacement distance is size of displ

d. air pressure decreases as altitude increases.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min