How does an iron nail become a magnet when it is placed in a strong magnetic field

2 answers:

5 0

Metals, especially iron, have this form of electron cloud around it. When it's placed in a magnetic field these electrons line up

allsm [11]3 years ago

4 0

Explanation:

A current flowing in a wire creates a magnetic field around the wire.

This concept is used in an electromagnet.

Wrap a wire around the iron nail and turned into a coil and then connect it to a battery. This system is called an electromagnet.

By adding the more turns to the coil or increasing the current in the coil, you can make an electromagnet more stronger.

Iron is used in an electromagnet as it easily gain magnetic properties. When the current is flowing in the coil then it will be easily gain magnetic properties and when the current is stopped then it will loose magnetic properties.

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What kind of destructive force or forces will most likely change the way Stone Mountain looks over the next million years? A) vo

zhannawk [14.2K]

Answer:

D) Erosion and Weathering

Explanation:

Erosion forces rocks to crash together or crack apart, some rocks shatter and crumble, while others are worn away.

During erosion, exfoliation which is a type of weathering occurs in sheets along joints/ lines which runs throughout Stone Mountain. Once a sheet on the surface has been exfoliated and the sheet of rock beneath it is exposed the process begins again. This process gradually changes the way Stone Mountain looks.

4 0

2 years ago

Read 2 more answers

What is the temperature used for the extension step?

lisabon 2012 [21]

Explanation:

The polymerase chain response (PCR) could be a strategy to quickly open up groupings of DNA.
Amid a normal PCR, format DNA (containing the locale of intrigued) is blended with deoxynucleotides (dNTPs), a DNA polymerase and small segments of DNA called primers.
PCR involves a series of temperature cycles.
The temperature used for the extension step is 72°C.
The temperature that is used during the extension phase is dependent on the DNA polymerase that is used.
Amid the expansion step (ordinarily 68°C-72°C) the polymerase amplifies the groundwork to create an early DNA strand. This prepare is rehashed different times
Generally at this stage, the reaction mixture is heated to a temperature intermediate between the denaturation and annealing temperatures. The optimal temperature for Taq polymerase is 72°C.