The actual goal of this particular facet of quantum mechanics is to calculate all of allowable energy states, not just the ground state. The ground state is significant though since it's the energy that the system is always trying to get to.
The mechanics of igniting the primary charge
The primary colors are red, yellow, and blue.
To write your ideas as completely and coherently as possible without worrying about grammar and mechanics
GPP (gross primary production) minus cellular respiration.
Secondary voltage / primary voltage
You could do worse than consider the 15 science divisions at the head of the SCIENCE subdivision in this answers.com. That will give you a good start. You'll find that several of the primary divisions in science have, in turn, subdivisions below them.
It's on page 51 of the Muscle Mechanics textbook.
Primary locomotion for a farm tractor would be its diesel engine. They work by common mechanics just on a larger scale than automobiles.
Mathematics is the primary tool of the mechanical engineer. Being comfortable with physics (the mechanics side of it, not E&M) can be helpful, too.
A turns ratio of 2000 to 100 is a 20 to 1 reduction in voltage, so the secondary, if the primary is 220 V, must be 11 V.
First find the ratio of the transformer. 6600/220 volts. Second find the secondary current, I = W/E, 99000/220. Third divide the secondary current by the transformer ratio. The answer will be the primary current. To check your answer (W (or VA) = V x A) multiply the primary current times the primary voltage and the secondary current times the secondary voltage and they should both equal the transformer's kVA.
DC Current divided by 1.225