Velocity.
I hope this helps! :)
Conduction: If the classroom gets super cold, the body temperature of students might change.
Convection: The cool air in a classroom can cool off the hot breath of the students.
Hi there!
Kinetic energy can be calculated using the following:

Where:
KE = Kinetic energy (J)
m = mass (kg)
v = velocity (m/s)
Plug in the given values:

Answer:
Explanation:
This is an RL circuit, therefore:
Impedance; z = 

Current amplitude

a)
Given that:

∴


b)
Phase constant :

