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Do magnetic domains of iron naturally align with earth's axis?
Magnetic domains have the tendency to align with magnetic fields. The Earth's magnetic field is relatively weak, but I would expect SOME alignment.
What is the most abundant element on mercury?
I would expect it is Silicon, same as on Earth.
Can Heavy objects falling in Gravitational fields Produce Electromagnetic fields?
Yes if the moon fell on earth it would definetly produce a noticable magnetic field.
Can you create vacuum with the help of electric and magnetic fields?
Normally you create vacuum by pumping out the air from a sealed container. Electric and magnetic fields would seldom be used, unless you had some electrically charged particles that you wanted to remove from your partial vacuum.
When air pressure increases the liquid in a mercury barometer would what?
The height of the Mercury column would decrease.
Do magnetic domains of iron naturally align with earth's axis?
Magnetic domains have the tendency to align with magnetic fields. The Earth's magnetic field is relatively weak, but I would expect SOME alignment.
Would electromagnetic waves exist if changing magnetic fields could produce electric fields but chaning electric fields could not in turn produce magnetic fields?
no
Is Mercury often used in magnets?
Mercury is not a magnetic matertial. Notes indicate that it is weakly diamagnetic, i.e. it is repulsed by magnetic fields. So some mercury alloys would also be weakly diamagnetic. Notes indicate that at very low temperatures (4K), mercury becomes a superconductor and it becomes a much stronger diamagnet (repelled). Apparently this magnetizes the mercury at this low temperature. See links.
Why don't magnetic compesses work in space?
There are still magnetic fields in space - especially if you remain close to Earth. But magnetic compasses are usually designed to use gravity, which you won't have if you are in free fall. A specially-designed magnetic compass would work, though.
What are the fields that you would expect to find in a database for a shop selling computer games?
List the fields that you would expect to find in a database for a shop selling computer games.
If you made another compass with the same materials would the needle point be in the same direction?
the needle points in the direction the magnetic fields wish. The gravity pulls the compass nearer and nearer the magnetic fields.
Which planet would you expect to be the hottest?
I would expect Mercury to be the hottest planet, since it's the closest one to the sun. That's why it's so surprising to learn that Venus is hotter than Mercury.
What is the most abundant element on mercury?
I would expect it is Silicon, same as on Earth.
What would happen if Earth's Magnetic field was a hundred trillion times more powerful than it currently is?
Most life forms are not affected by magnetic fields; for example, an MRI machine - Magnetic Resonance Imaging - causes VERY intense magnetic fields, and they don't harm the people who are inside them. (It's cramped and noisy, but the magnetic field doesn't hurt them.) The effect may be different for VERY high fields; we don't know. Electronic equipment would be incinerated by its own induced voltage, and iron and nickel deposits within the Earth would vaporize.
If a meteorologist says that the air pressure is getting lower what would you expect to happen to a Torricelli's mercury barometer?
The height of the Mercury column would decrease.
If a meteorologist says that the air pressure is getting lower what would you expect to happen to Torricelli's mercury barometer?
The height of the Mercury column would decrease.
If a meteorologist says that the air pressure is getting lower what would you expect to see to Torricelli's mercury barometer?
The height of the Mercury column would decrease.
