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What unit shows the difference in charge between two points?
I don't think such a unit is used, or would make much sense, in physics. That sounds like the description of voltage - unit volt. However, the volt is not really a difference in electric charge, but rather, of electric potential. It can be understood as potential energy related to electric fields: if there is an electric potential between two points, it requires a certain amount of energy to move a unit charge from one point to the other. Thus, the unit volt is equivalent to joules / coulomb.
The metric unit for work is also called a?
Work is transfer of energy; thus, the unit of work is the same as the unit of energy. The SI unit is called "Joule".Work is transfer of energy; thus, the unit of work is the same as the unit of energy. The SI unit is called "Joule".Work is transfer of energy; thus, the unit of work is the same as the unit of energy. The SI unit is called "Joule".Work is transfer of energy; thus, the unit of work is the same as the unit of energy. The SI unit is called "Joule".
What does potential energy plus gravitational energy equals?
Gravitational-potential energy.
As an interstellar gas cloud shrinks in size its gravitational potential energy?
As an interstellar gas cloud shrinks in size, it's gravitational potential energy gradually transforms into other forms of energy.
Why does a book on a high shelf have more potential energy than on a low shelf?
Well, honey, that book on the high shelf has more potential energy because it's got farther to fall. Gravity's just itching for the chance to show off its power and send that book plummeting down to the ground. So, the higher the book, the more potential energy it's got stored up just waiting to be unleashed.
