Answer:
Explanation:
We define density as
So, the volume for our oil will be
the volume for a cylinder with radius r and height h is
So, we can obtain the height of the droplet of oil as:
the radius is
And this is the diameter of the oil molecule.
Answer:
The answer is 10.857mJ
Explanation:
The energy stored in this solenoid is given by the below mentioned equation,
where L the inductance of this solenoid is given by the below mentioned equation,
Plugging this into the energy equation you obtain the equation for the total energy stored in the magnetic field of the solenoid, given by,
where is the permeability of free space which equals to
. Plugging all the quantities into the above equation from the data in the question after converting to standard units. of meters instead of centimeters, we get for the energy stored in the coil,
