P = V * ( V / R ) = V2 / R

[mbrooke]

Is P = V * ( V / R ) the same as V2 / R ? Why? And if not which is correct? .....................................

 

[m sleem]

Yes, they are same.

 

[GoldDigger]

The only problem is that on this Forum it is not possible to render subscripts and superscripts. Hence the very ambiguous V2 to represent V squared (V * V).
Other notation conventions are V^2 and V**2 for V squared. Some places even use Vexp2.

 

[Dennis Alwon]

V² -- It can be done

Hold down "alt" and type 0178

 

[electrofelon]

V² -- It can be done

Hold down "alt" and type 0178

Whoa cool!

 

[gadfly56]

V² -- It can be done

Hold down "alt" and type 0178

Very kludgey. The old site allowed super- and subscripts directly.

 

[Dennis Alwon]

There are many alt codes you can use

"alt" 0176 is degrees 180°

 

[Dennis Alwon]

windows character map also has lots

½
Ø

 

[Dennis Alwon]

I will ask to see if we can get subscipt & superscript added

 

[oldsparky52]

Very kludgey.

Nice word! , thanks.

 

[Besoeker3]

I will ask to see if we can get subscipt & superscript added That would be handy..................

 

[mbrooke]

The only problem is that on this Forum it is not possible to render subscripts and superscripts. Hence the very ambiguous V2 to represent V squared (V * V).
Other notation conventions are V^2 and V**2 for V squared. Some places even use Vexp2.

Yes, V*V or square. I should have mentioned that, my mistake

 

[mbrooke]

I will ask to see if we can get subscipt & superscript added

Thanks, that would be great!

 

[mbrooke]

Yes, they are same.

In mathematical terms, why does it work out?

I also tried to simplify P = V * ( V / R ) and got V*V/R*R but thats obviously not right.

 

[oldsparky52]

In mathematical terms, why does it work out?

I also tried to simplify P = V * ( V / R ) and got V*V/R*R but thats obviously not right.

Would it help to look at it like (V/1)*(V/R) ?

Multiply the numerators is V*V or V-squared.
Multiply the denominators is 1*R or R

 

[LarryFine]

In mathematical terms, why does it work out?

Make up some numbers for V and R and do the math each way.

 

[synchro]

There are many alt codes you can use

"alt" 0176 is degrees 180°

The alt codes Dennis mentioned are known as Unicode characters:

List of Unicode characters - Wikipedia

en.m.wikipedia.org

You can also search in Google using the words "Unicode" and a word describing the symbol for which you want the alt code, such as "degree".

 

[mbrooke]

Would it help to look at it like (V/1)*(V/R) ?

Multiply the numerators is V*V or V-squared.
Multiply the denominators is 1*R or R

Kind of. I always assumed that you multiply both numbers in the brackets by the one outside the brackets.

 

[mbrooke]

Make up some numbers for V and R and do the math each way.

Certainly some law must govern this?

 

[Speedskater]

V² -- It can be done
Hold down "alt" and type 0178

This might work only on old-fashioned keyboards with number pads.