Brainliest and 100 points to whoever answers these questions

1. explain what it means when we say a substance is magnetic.

2. discuss the relationship between electric and magnetic fields.

3. what role does voltage play in the formation or use of an electromagnet?

4. what is an advantage of using an electromagnet rather than a regular magnet?

1 it means the atoms are lined in a way that created a magnetic field that goes from one side to the other.

2 Electric field points in the direction of the force experienced by a positive charge while Electric field points in the direction of the force experienced by a positive charge.

3. -Voltage overcomes the resistance of the electromagnet winding to force a current through that resistance

4 the magnetic field can be quickly changed by controlling the amount of electric current in the winding.

hope this is helpful:)

Explanation:

1. A substance is magnetic if it experiences a force when placed in a magnetic field.

2. A magnetic field can be created by a moving electric charge and an electric field will cause an electric charge to move.

3. Voltage is required to create an electric field to move charges. The higher the voltage, the stronger the electromagnetic force.

4. An electromagnetic can be turned off by cutting the voltage. A regular magnet cannot do that.

the results is a decrease in air temperature with an increase of altitude.

explanation:

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m