Answer:
60 J
Explanation:
Potential Energy: This can be defined as the energy possessed by a body, due to its position. The S.I unit of potential energy is Joules. The Formula of potential energy is given as
Ep = mgh or
Ep = Wh ................ Equation 1
Where Ep = Potential energy of the box, W = Weight of the box, h = Height.
Given: W = 20 N, h = 3 m.
Substitute into equation 1
Ep = 20×3
Ep = 60 J.
Hence the gravitational potential energy of the box = 60 J
<span>The valence electrons occur in the outer shell of the atom. </span>
Answer:
It exerts pressure everywhere inside the container.
Explanation:
Pressure is the forelce exerted by a body per crossectional area,ie pressure is force/area.In fluid system an important law that explains the behavior of fluid in a closed vessel is the Pascal law.It state that a liquid in a containing vessel exerts pressure undiminished in all direction in a vessel and to all portion of the fluid.
What is the writing in the bottom?
Electrons are very emotional and compulsive things. They feel
an intense desire to get away from negatively charged things or
places, and an equally strong desire to get closer to positively
charged ones, as if according to some law of nature.
By means of chemical things inside batteries that I don't understand,
one end of the battery is kept positively charged and the other one
negatively charged. So if there's anything between the terminals that
an electron can easily flow through, they'll do it !