what exactly are you reffering to? electricity? anyway, I would imagine it would be much the same as something mechanical. if it is built and rated for 50 hertz, an extra 10 hertz might not destroy it immediately, but the extra osscilations will deffinitely take thier toll over time.
There are various things that would happen if you skip using methodologies in developing information system. In most cases, you would not have a basis to analyze your system if it fails. Using methodologies makes it easy to manage the information system.
The case of reverse polarity would only happen on a DC system. As to would it cause equipment to run when switched off, no, if the switch opens the equipment's power supply completely the device will not operate.
if there were no solar system then there would be no life?
You would die
You would die.
Then constantly, experiments and tests would produce "un-accurate" answers, because of the other foreign microbes on their equipment.
you would die
you would have the emotions of an alligator
You would die.
you would die
you would die
You can place the equipment wherever your system is set up. It would be in your best benefit to buy and purchase an entertainment system to hold everything.