Answer:
direction, speed, and shape of a body
Explanation:
To solve this problem it is necessary to apply the concepts related to the electric field according to the definition of Coulomb's law.
The electric field is defined mathematically as a vector field that associates to each point in space the (electrostatic or Coulomb) force per unit of charge exerted on an infinitesimal positive test charge at rest at that point.
Mathematically this can be described as:

Where,
permittivity of free space
r = Distance
q = Charge
E = Electric Field
Our values are given as,



Replacing we have,




Therefore the amoun of charge on the outer surface of the larger shell is 
Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons