Iam trying to brush up on my physics skills and i came across a couple of equations that i cannot seem to remember what they are? will someone ?

Explanation:

Eq 2 ) is Equation for force on a charge Q1 due to charge Q2 separated by a distance R .. it is Equation for Coloumb's law !!

Where , k = 1/4π€

Eq 3 ) is Equation for force on mass m1 due to mass m2 separated by distance R .. it is Newton's law of Gravitation

Where , G = universal Gravitation constant

second mirror gathers light from a faraway object and reflects it to another mirror. - a.

  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