What type of magnetism is present in a magnet that you use to place a photograph on the refrigerator?
a. induced
b. superconducting
c. contact
d. permanent

Explanation:

Permanent magnets refer to those magenets that exert an magnetic field due to their internal structure. That is, they naturally generate a magnetic field.

So, when we talk about magnets we use on the refrigerator, we are talking about magnets that naturally exert a magnetic field, due to their internal composition of the material that are made.

Refrigerator's magnets are not superconducting, or induced. There's no need of any electrical current to produce their magnetic field.

Therefore, the right answer is D.

he . if i may ask what i your question exactly?

explanation:

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is