Answer:
The speed of the car at the bottom of the circle is twice as its speed at the top of the circle.
Explanation:
It is given that, at the bottom of the circle, the car experiences four times as much radial (centripetal) acceleration as at the top of the circle such that :
The centripetal acceleration is given by :
Let are the speed of the roller coaster car at bottom and at top respectively.
.
So, the speed of the car at the bottom of the circle is twice as its speed at the top of the circle. Hence, the correct option is (D).
The correct answer to the question is : B) It has a very long life.
EXPLANATION:
The main hazardous problem of nuclear waste is that it has a very long life. The waste radioactive materials are still dangerously radioactive for so many years as they are not in any use in any commercial sectors.
Hence, the correct answer to the question is that nuclear waste has a very long life which makes it difficult to dispose responsibly.
I'm not sure what moment you're talking about, there are so many moments in physics! :)
But when you're unsure about what to do, look at the units. You already have the 5N and your answer is in Nm, so the m is meters. What do you have to multiply by 5 to get 15? 3!
Answer: 3 meters
Explanation:
Newton's third law states that " Every action has an equal and opposite reaction ".
Since, the Tension force acting on the rope is same.
So, the net force is the same everywhere along the entire rope.
I know that E.) Tension Force is one of them and B.) Gravity Force but I'm not sure about the others.