Question 1 Three point charges are arranged as shown in the figure. IfQ - 80 .C, a - 3.0m, and
b - 4.0 m. Find:

a) The magnitude and direction of the electric field at point P.
b) The electric potential due to these three charges at point P.
c) The change in electric potential energy (in units of joules and ov) of
the system of these three charges plus a fourth point charge of $ nC
as this fourth charge moves from infinity to point P.

The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )

True will be your answer dude