Tell me more ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.
up vote -1 down vote favorite
1

Energy can neither be created nor be destroyed, if energy disappear in one form it will reappear in another form without any loss.

so what will happen if FAN switched on in the space. ?

1.Electrical energy make Copper coil to burn. (Heat Energy)

2.Electrical energy converted into flame by burning of coil(Light Energy..?how it burn when no oxygen in the space)

3.Electrical energy converted into electromagnetic energy since by Boyle's law pressure directly proportional to Temperature. if pressure is Zero since its vacuum obviously it made temperature also zero. so there is no chance for heat or light energy.

4.Electrical energy converted into Mechanical energy. without any loss .

5.else any new from of energy gets transformed other than i mentioned.

Thanks and regards.

Arun kumar

share|improve this question
1  
Hi arun, and welcome to Physics Stack Exchange! The thing about this question is that it demonstrates some major gaps in your understanding of physics. That's not a problem by itself, but in this case it means your question doesn't make a whole lot of sense. Perhaps you'd be better off asking some more basic questions to lead up to it. – David Zaslavsky♦ Dec 6 '11 at 8:01

closed as off topic by David Zaslavsky♦ Dec 6 '11 at 7:59

Questions on Physics Stack Exchange are expected to relate to physics within the scope defined in the FAQ. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about closed questions here.

1 Answer

up vote -1 down vote

I'm not certain, but what could happen may be the following:

The fan is designed to operate in an environment where the blades meet normal air resistance. Since this is absent in space, they will spin much faster than they were designed to do, and there is a significant probability that this will result in much more frictional heating in the motor components. The only way to dissipate this extra heat in space would be by radiation, so the question becomes "can the heat be radiated away fast enough to prevent melting/damage of the motor ?"

So my guess would be your number 1 (with substitution of "melt" for "burn").

With regard to your number 3: the temperature in the vacuum of space (assuming you're not near a star) is low, but not zero. The radiant energy in my guess is radiant heat (infrared) and hence electromagnetic in nature.

4 is not possible - there will always be frictional losses in the mechanical components and resistive losses in the cable.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.