Answer:
the answer is D
Explanation:
if you read the paragraph and question number 4 it tells you the answer wich is d
Answer:
Average net force, F = 15157.15 N
Explanation:
It is given that,
The mass of the car and riders is, 
Initial speed of the car, u = 0
Final speed of the car, v = 43.4 m/s
Time, t = 8.59 seconds
We need to find the average net force exerted on the car and riders by the magnets. It can be calculated using second law of motion as :
F = m a


F = 15157.15 N
So, the average net force exerted on the car and riders by the magnets. Hence, this is the required solution.
In parallel, neither resistor knows about the other one, and they have no effect on each other.
Each resistor is connected straight to the battery terminals. If the battery is hefty enough, it supplies current to each resistor as if the other one weren't there.
Current through a resistor = (voltage across it) / (its resistance).
Current = (20 V) / (40 ohms)
Current = 1/2 Ampere.
Answer: D Medium B is denser than Medium A because light bends more in Medium B.
Explanation: The more the light bends the less energy it has