Answer:
(a). The net gravitational force is 
(b). The position is at 0.232 m.
Explanation:
Given that,
Mass of one object M = 255 kg
Mass of another object M'= 555 kg
Separation = 0.390 m
(a). We need to calculate the net gravitational force
Using formula of force


Put the value into the formula


The net gravitational force is 
(b). We need to calculate the position
Force from 555 mass = Force from 255 mass




The position is at 0.232 m.
Hence, (a). The net gravitational force is 
(b). The position is at 0.232 m.
Answer:
Majorly the electric field is reduced among other effect listed in the explanation
Explanation:
In capacitors the presence of di-electric materials
1. decreases the electric fields
2. increases the capacitance of the capacitors.
3. decreases the voltage hence limiting the flow of electric current.
The di-electric material serves as an insulator between the metal plates of the capacitors
Answer:
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Answer:
c They can only travel without a medium.
Explanation:
Electromagnetic waves are made up of electric field and magnetic field.
Here electric field will induce magnetic field and magnetic field will induce electric field.
So this type of field do not require any medium and in vacuum or air the speed of electromagnetic waves are same as speed of light

also we have different range of electromagnetic waves out of which a small range of electromagnetic waves is of visible region in which these waves are visible to us.
so correct answer is
c They can only travel without a medium.