In a chemical reaction does matter increase, decrease, or disappear.
2 answers:
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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.
displacement of the plane is given as
time taken by the plane
now the velocity is given as
so the velocity of airplane is 399 mi/h towards South West
Answer:
F = 10 N
Explanation:
- Assuming that we can treat to both particles as point charges, the magnitude of the force that one charge exerts on the other, must obey Coulomb's Law.
- The expression for this force, applied to the charges +Q and +q, separated by a distance d, is as follows:
- If we replace +Q by +4Q, and d by 2*d, the new expression for the magnitude of the force is as follows:
- As it can be seen, the force will be as same as before making changes, so F= 10 N.