Answer:
7.71 V
Explanation:
When the charge remains constant, the potential difference decrease by the factor of the dielectric constant K
V new = V initial / K = 12 V / 2.8 = 4.29 V
ΔV ( change in potential) = V initial - V new ( after dielectric has been added) = 12 V - 4.29 V = 7.71 V
The potential difference decreases by 7.71 V
Answer:
In order to make this force twice as strong, F' = 2 F, the distance would have to be changed to half i.e. r' = r/2.
Explanation :
The electric force between two point charges is directly proportional to the product of charges and inversely proportional to the square of the distance between charges. It is given by :

r is the separation between charges


If F'= 2F

In order to make this force twice as strong, F' = 2 F, the distance would have to be changed to half i.e.
. Hence, this is the required solution.
Answer: a) 112.88 * 10^3 N/C; b) The electric field point outward from the center of the sphere.
Explanation: In order to solve this problem we have to use the gaussian law so we use a gaussian surface at r=0.965 m and the electric flux is equal to Q inside/εo
E* 4*π*r^2= Q inside/εo
E= k*Q inside/r^2= 9*10^9*(6.53+5.15)μC/(0.965)^2=122.88 * 10 ^3 N/C
Answer:

Explanation:
From the question we are told that
Angle of cable 2 
Weight of sculpture 
Generally the Tension from cable 2
is mathematically given by



Generally the Tension from Cable 1
is mathematically given by


