The correct answer among all the other choices is 4. This is the number of the lowest energy level that contains an f sublevel. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
The work done by a rotating object can be calculated by the formula Work = Torque * angle.
This is analog to the work done by the linear motion where torque is analog to force and angle is analog to distance. This is Work = Force * distance.
An example will help you. Say that you want to calculate the work made by an engine that rotates a propeller with a torque of 1000 Newton*meter over 50 revolution.
The formula is Work = torque * angle.
Torque = 1000 N*m
Angle = [50 revolutions] * [2π radians/revolution] = 100π radians
=> Work = [1000 N*m] * [100π radians] = 100000π Joules ≈ 314159 Joules of work.
Answer:
The magnetic field along x axis is
The magnetic field along y axis is zero.
The magnetic field along z axis is
Explanation:
Given that,
Length of the current element 
Current in y direction = 5.40 A
Point P located at 
The distance is
We need to calculate the magnetic field
Using Biot-savart law
Put the value into the formula
We need to calculate the value of 
Put the value into the formula of magnetic field
Hence, The magnetic field along x axis is
The magnetic field along y axis is zero.
The magnetic field along z axis is
I think The coastal areas were highly polluted
I think it should be D as momentum is the product of mass and velocity...
