Current is the amount of charged passed divided by elapsed time.
I = Q/Δt
I = current, Q = charge, Δt = elapsed time
We also know an electron has a charge of 1.6×10⁻¹⁹C, so let us find the total charge by multiplying this unit of charge by the total number of electrons:
Q = 1.6×10⁻¹⁹(3×10²⁰) = 48C
We also have Δt = 6s, so let's plug these values in to solve for I:
I = 48/6
I = 8A
Answer:

Explanation:
Given:
vertical height of oil coming out of pipe, 
diameter of pipe, 
length of pipe, 
density of oil, 
viscosity of oil, 
Now, since the oil is being shot verically upwards it will have some initial velocity and will have zero final velocity at the top.
<u>Using the equation of motion:</u>

where:
v = final velocity
u = initial velocity
Putting the respective values:


<u>For Reynold's no. we have the relation as:</u>



Fundamental can not be broken down to anything simpler ( Kg, m , s, etc)
Derived can be broken down to simpler, fundamental units