-- A motor and a generator both do a transformation between electrical energy and some other form of energy, but they do it in opposite directions.
-- A motor takes electrical energy and transforms it into mechanical energy, which can then be used to run mechanical things like cars or wheat grinders.
-- A generator takes mechanical energy ... like from a steam turbine or a windmill or a water wheel ... and transforms it into electrical energy, which can then be shipped over long distances through wires, and used to run motors or other electrical things.
Explanation:
Assuming a uniform mass, let's say ρ is the mass per area density.
ρ = M / (πR²)
Let's look at this as the difference of two disks, a large one and a small one.
The moment of inertia of the large disk is:
I = 1/2 MR²
The mass of the small disk is:
m = ρ πr²
m = M / (πR²) πr²
m = M (r/R)²
Using parallel axis theorem, the moment of inertia of the small disk is:
I = 1/2 mr² + md²
I = 1/2 M (r/R)² r² + M (r/R)² d²
I = 1/2 M (r²/R)² + M (rd/R)²
The total moment of inertia is:
I = 1/2 MR² − 1/2 M (r²/R)² − M (rd/R)²
Answer:
D) Aerobic respiration is very efficient and produces a large amount of energy, while anaerobic respiration is not very efficient and produces a small amount of energy.
Explanation:
Anaerobic respiration, which uses glucose and no oxygen, produces less energy compared to aerobic respiration.
<u>Answer:</u>
The two things that affect the size of the electric force between two objects are "amount of charge on each object and distance between the charges".
<u>Explanation:</u>
The magnitude and sign of the electric force are estimated by the electric charge in "Coulombs Law" inspite of mass an object which is favorable in gravitational force. Therefore charge is the property of electromagnetism which influences the charged objects' motion.
More the charge on object more will be the electric force, as bigger charge cloud have more force than smaller.The electric force is inversely proportional to the square of the distance between the two charges. This showcase weaker attraction or repulsion as the distance increases between the two charges.
If you know the amount of force acted on an object to find the amount actually being put onto it, you just add the amount of work done onto it, but if you are trying to find the difference between the amount of forces you just subtract the amount of force acting on the object.
