Answer:
C. 
Explanation:
Let initial charges on both spheres be,
When the sphere C is touched by A, the final charges on both will be,
#Now, when C is touched by B, the final charges on both of them will be:
Now the force between A and B is calculated as:
Hence the electrostatic force becomes 3F/8
Answer:
B. True since when a person removes the weights there is less for the other people
Explanation:
This problem ask us consider some things
In the private current it is considered a good example of a private good
the fish in the river are a common resource
the fishing in the river is tragedy of the commons
A False. The fish in the river are natural and not sown
B. True since when a person removes the weights there is less for the other people
C. False. Some fishermen will go to the creek
D. False some will go to the river
.
The solution for this problem is:
A velocity of wave is given as V = λ⋅f
V - velocity of wave
f - frequency of wave
λ - wave length
So getting the wave length is:
λ = V/f
λminimum = V / fmaximum
λminimum = 342 / 4200
λminimum = 0.081 m
λmaximum = V/ fminimum
λmaximum = 342 / 28
λmaximum = 12.214 m
A and B i think is the answer
