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If two positive charges are near each other they will repel each other.
Answer:
Factors determining the state of substances
* Inter molecular force : substances having strong intermolecular force will be solid and substance with weak inter molecular force will be gas.
* Nature of chemical bond:
Ionic compounds are generally solid in nature because of strong intermolecular force.
Polar covalent compounds may be solid or liquid
Non polar covalent compounds generally gas
* Electro negativity difference: greater the electronegativity difference, greater will be the intermolecular force.
Answer:
Total angular displacement will be 19.998 radian
Explanation:
It is given that the washer starts from the rest and reach reach the speed of 2 rev/sec in 11 sec
So initial angular velocity 
And final angular velocity 
Time t = 11 sec
So angular acceleration 
So angular displacement in this 11 sec


Now the washer slows down and stops in 9 sec
So final angular velocity = 0 rad/sec
So angular acceleration 
So angular displacement 
So total displacement in 20 sec =
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