Answer:
1.14*10^-3m
Explanation:
We know that
Volume= mass/ density
But
Area x depth= mass/density
πr²*depth= mass/density
r²=m/πdp
So
r= √0.35/3.142*0.085*1000
r= 1.14*10^-3m
Answer:
The potential at a point is 400 V.
Explanation:
Given that,
The electric potential at a point that is halfway between two identical charged particles is 300 V
Potential V= 300 V
Let the distance between the charge is 2r.
The potential at mid point
Using formula of potential
At mid point,
...(I)
If the potential at a point that is 25% of the way from one particle to the other
We need to calculate the distance between the charge
We need to calculate the new potential
Using formula of potential again
Put the value of
Hence, The potential at a point is 400 V.
You can't.
Work = (force) x (distance) .
You can squeeze distance out of the speed, but there's no way to determine the FORCE being used.
If there's no friction and the car is traveling in a straight line, then NO force is needed to keep it going. It just keeps going. (Newton's 1st law of motion.)
You've managed somehow to post the mirror image of the circuit diagram, including the numbers and values of the resistors. I'm curious to know how you did that.
The three resistors at the left end of the diagram are 3Ω , 2Ω , and 1Ω all in series. They behave like a single resistor of (3+2+1) = 6Ω .
That 6Ω resistor is in parallel with the 2Ω drawn vertically in the middle of the diagram. That combination acts like a single resistor of 1.5Ω in that position.
Finally, we have that 1.5Ω resistor in series with 1Ω and 4Ω . That series combination behaves like a single resistor of <em>6.5Ω</em> across the battery V.