What is the importance of having a control group in each experiment?

A control group is an essential part of an experiment because it allows you to eliminate and isolate these variables. Control groups are particularly important in social sciences, such as psychology.

  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

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.