Answer: the mercury will be 1155.678mm above the reference mark
Explanation:
Detailed explanation and calculation is shown in the image below
Answer:
Explanation:
Initial velocity in air, Vo = 0 m/s
Final velocity in air, Vi = 16 m/s
Initial velocity in water, Vf = 3 m/s
Total distance, S = 127 m
Total time, T = 12 s
Using the equation of motion,
(V - U)t = s
S = s1 + s2
Let T = t1 + t2
127 = (16 × t1) + 3 × (12 - t1)
127 = 16t1 + 36 - 3t1
91 = 13t1
t1 = 91/13
= 7 seconds
Time taken in air, t1 = 7 seconds
t2 = 12 - 7
= 5 seconds.
Balance tubes by spacing them equally around the centrifuge and Always balance tubes with other tubes containing a same volume of liquid are right.
If you don't space them out equally, you will have a lot of broken glass to clean up...trust me. The same thing can happen if you don't have equal amounts of liquid in each tube, but it doesn't have to be exactly the same in every one.
Black holes is exists
Black holes is highly gravitional wave field in space