Explanation:
The expansion of the universe is the increase in distance between any two given ... Metric expansion is a key feature of Big Bang cosmology, is modeled mathematically with the ...
Answer:
A. a material burns out when current is excessive
Because the sound waves are being observed by the people that are there and it is not empty as in an empty place the sound waves will come back to you.
I'm happy to know that the diagram shows how it's all set up.
If I could see the diagram, then I could probably do a much
better job with an answer. As it is ... 'flying blind' as it were ...
I'm going to wing it and hope it's somewhat helpful.
If the pulley is movable, then I'm picturing one end of the rope
tied to a hook in the ceiling, then the rope passing down through
the pulley, then back up, and you lifting the free end of the rope.
A very useful rule about movable and combination pulleys is:
the force needed to lift the load is
(the weight of the load)
divided by
(the number of strands of rope supporting the load) .
With the setup as I described it, there are 2 strands of rope
supporting the load ... one on each side of the pulley. So the
force needed to lift the load is
(250 N) / 2 = 125 N .
Answer:
T = 228.3N
Explanation:
We are given:
w = 130N
r = 4.0m
We take g = 10
Therefore:
w = m×g
130 = m × 10
m = 130/10
m = 10
At the lowest point,we use the equation:
;
Since we are asked to find tension T, we now have:
Therefore, substituting figures in the equation, we have:
;
T = 228.3N
The tension in the rope is 228.3N
