Score
Title
435
AskScience Panel of Scientists XVII
3110
Is there a limit on how long a power cord can be?
1398
I know it takes two weeks for the flu vaccine to be fully effective. I assume effectiveness is zero right before the vaccine is administered, and maximum after two weeks. But is there a graph that shows how effectiveness changes in time?
8651
Why is the Congo River so deep?
17
Why the Antarctic ice cap stays in one place and does not drift freely like an iceberg?
42
Why is the separation constant for the radial equation of the Hydrogen atom in the form of L(L+1)?
11
Why can some viruses (smallpox, polio) be virtually eradicated while others cannot (HIV, influenza)?
3
How does a coax splitter work?
20
If the capacity of a battery charging another battery drops below that of the receiving battery, will it stop transferring electricity since the electrons will no longer prefer to leave the lower energy "state" of the drained battery?
3
Is there a link between a metal being conductive from an electric standpoint and it being magnetic? If so, what is the cause?
13
If our bodies are conductive, can holding a battery between two fingers deplete it completely?
2
What can stop and/or destroy a black hole?
40
How/why are so many mathematical proofs and theorems contingent on the Riemann hypothesis being true?
7438
Are there any predators that hunt for sport rather than for food?
6
Are there any ant species that don’t live in colonies?
24
Do they update the voyager software?
2
How did the Russian Woodpecker receiver work?
2
What is meant by the heat death of the universe?
19
Does language affect learning and studying?
2
If the strength of an acid is based on concentration, why are acids like Sulfuric Acid always considered so dangerous compared to others?
23
When water does down the drain, why does it always go down the drain in a form of whirlpool.?
12
From what I have learnt so far, refrigerators use chlorofluorocarbons for cooling. Do these chlorofluorocarbons run out after some time? If yes how are they replenished?
0
Microwave Ovens and Wi-Fi Signals Operate at The Same Frequency (2.4GHz). What Makes Microwave Ovens More Dangerous?
20
What makes things transparent?
16
What allows certain cars and airplanes to have their own Wifi?
31
What causes the thick mist/fog that I frequently see coming off of mountains in my area?
9
What exactly happens to a person's behavior after a lobotomy?
8
How Bayes rule was used to help with aiming cannons?
6
Is there a limit to the energy density of batteries?
3
Is a Colliod a state of matter?
0
What kind of waves on the Electromagnetic Spectrum do metal detectors use to isolate only metal and no other materials?
21
Many poisonous and venomous vertebrates get their toxins from toxic arthropods that form part of their diets. Why can't they just form the toxins themselves the same ways their prey do?
192
Why are hail storms so short?
6
How do particle accelerators such as the LHC detect particle collision products?
5
How do marine mammals keep their testes cool?
68
If aliens were to look at earth through a telescope from 65 million lightyears away, would they see dinosaurs?
13
Why does fire flicker?
27
What exactly is string theory and how does it work?
10732
What exactly does the cold virus do to me to make me so weak?
8
I understand conduction and radiation as modes of heat transfer, but convection confuses me. Why does fluid moving over an object remove heat from it as opposed to adding heat due to friction?
17
What happens to the brain as you fall asleep? Are certain proteins released to induce sleep? Is it seen as a voluntary or involuntary action?
19 hitssquad If you were to evacuate the pipe (suck all of the air out of it), the ocean water would rise up 407 inches (39 feet, 11 inches) into the vertical pipe. This is because atmospheric pressure is 14.7 psi, and because 1 psi = 27.708 inches of water column. That atmospheric pressure would force the water up the pipe exactly that far, and no further, bringing the weight of the water column thus created in the pipe into equilibrium with the weight of the atmosphere bearing down per equivalent surface area on the ocean water outside the pipe. The other forces you mentioned would be virtually the same on the ~40 feet of water in the pipe as they would be on the surrounding ocean water, and thus would cause virtually no difference in the water column height in the pipe.
18 0 hitssquad If you were to evacuate the pipe (suck all of the air out of it), the ocean water would rise up 407 inches (39 feet, 11 inches) into the vertical pipe. This is because atmospheric pressure is 14.7 psi, and because 1 psi = 27.708 inches of water column. That atmospheric pressure would force the water up the pipe exactly that far, and no further, bringing the weight of the water column thus created in the pipe into equilibrium with the weight of the atmosphere bearing down per equivalent surface area on the ocean water outside the pipe. The other forces you mentioned would be virtually the same on the ~40 feet of water in the pipe as they would be on the surrounding ocean water, and thus would cause virtually no difference in the water column height in the pipe.