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Positive work is input energy, w= -f.d - |fd|cos(fd) , when this is positive energy is put into the system, in this case the force is in the opposite direction of the displacement. Negative work is output energy properly called exergy, w = -f.d, in this case the force is in the direction of the displacement, for example, dropping a ball is exergy, the displacement is in the direction of the force of gravity. This is exergy, work is taken out of the system as opposed to lifting the ball which required putting work into the system.
Maxwell had a problem with quaternions because physicists defined positive work as dropping the ball, and the rules of quaternions said dropping the ball is a negative sign and thus exergy, work out, not work in. Around the 1900 this was a major conflict and the physicist won and decided to change the sign on vectors squared , I2 = -1 to +1, so dropping the ball would be positive energy.
This is incorrect physics and incorrect mathematics. The sign of the scalar work is negative for work out and positive for work in. This is seen in opposites attract, you get work out and the sign is negative. For like charges the sign is positive and you have to put work in.
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What molecule has a positive end and negative end?
A zwitterion, if you mean formal charges. If you just mean relatively positive and negative, then a polar molecule.
What is total positive charges and negative are equal?
You mean, what happens when positive and negative charges are equal? That is simple, the equal opposite cancel each other out and we have an electrical neutrality
Is ethanol positive or negative polarity?
goes from negative to positive
Nonpolar materials have positive and negative areas?
have separated positive and negative areas.
Is dexamethasone a positive or negative ion?
Negative
When work is positive and when is negative?
when work is positive and when playing is negative
Can work positive or Negative in physics how?
Yes Work can be positive or Negative.
Should positive go to positive in a circuit?
No, this will not work. Postitive to Negative/Negative to Positive will work.
What are positive and negative work ethics?
what is positive and negative
What does negative answer mean?
its negative! negative reply, answer that is not positive
Do withdrew mean positive or negative?
positive
When swimming work done is positive or negative?
Positive.
When do you say that the work done is positive or negative?
There are different conventions as to what work is negative and what work is positive. The convention used by engineers and physicists is that work done BY the system on its surroundings is positive while work done ON the system by its surroundings is negative. Chemists reverse these conventions.
Can the sample mean in statistics be either positive or negative?
It can have either a negative or positive trend
How do you determine a work done is positive sign or negative sign?
If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.
Does air friction do positive negative or zero work on your car when you are coasting?
negative work
Is a negative a positive is what?
A Negative plus a positive = a negative because negative and a positive cannot work together Negative + Negative= Positive Positive + Positive = Positive when your dealing with numbers such as : -2 + 2 would equal a negative 4 -2 +-2 would equal a positive 4
