Answer :
New force becomes, F' = 1.83 N
Explanation:
Let two point charges exert a force of 7.35 N force on each other. The electric force between two charges is given by :
are charges
r is the distance between charges if the distance between them is increased by a factor of 2, r' = 2r
New force is given by :
F' = 1.83 N
So, the new force between charges will be 1.83 N. Therefore, this is the required solution.
It is called static electricity...
electrical nature of matter
the stick become deficient in electrons and said to be positively charge. The wool having gained the electrons lost by the rod, has an excess of electrons and becomes negatively charge.
Answer: 0.8
Explanation:
The efficiency is defined as the ratio of total imput energy that is actually utilized to the end of the device.
So if we have a total transfer of 1500j of energy, and 1200j are used to heat the thing inside the kettle, 300j are not used to the actual function of the kettle.
So the efficiency is n = 1200j/1500j = 0.8
This means that a 80% of the energy imput is actually used to heat the kettle.
The dependent variable in this experiment is how far the ball will roll.
the independent variable is the in incline.
