What role does voltage play in the formation or use of an electromagnet? if you were able to keep the electromagnet that you created in your laboratory activity, what would be two possible uses for the electromagnet? what is an advantage of using an electromagnet rather than a regular magnet?

If you were able to keep the electromagnet that you created in your laboratory activity, what would be two possible uses for the electromagnet?

Electric bells or buzzers

To separate iron and iron objects from a mixture

Explanation:

When a current is passed through current carrying coil with magnetic material at the center, magnetic field is produced. Thus, it acts as temporary magnet. It can be demagnetized by stopping the current. The strength of the magnetic field can be increased by increasing the number of loops and amount of current.

At home, the electromagnet can be used as a buzzer or electric bell. The electromagnet can be connected to a iron armature with a clapper. In the presence of magnetic field, the clapper strikes the bell as the iron armature is pulled towards the field.

The electromagnet can also be used to separate iron objects from a mixture, such as iron nails, clips, pins, needles etc.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.