The work done in exerting a force F on a body over a displacement d is the scalar product (or "dot product") of the F and d, that is:
W = F.d = |Fd|cos(θ),
where θ is the internal angle between the directions of F and d, and |F| and |d| are the (positive) magnitudes of the vectors F and d respectively (see diagram below).
........d
......^
..../
../ θ
/---------------> F
Note that this formula for the work automatically gives the right sign for W, i.e. W > 0 when positive work is done on the body by the force F.
This is just the product of the force's magnitude with the component of displacement in the direction of the force. Equivalently, it is the product of d's magnitude with the component of F in the direction of d.
Obviously, if either F or d is zero then so is W, so in what follows assume that F and d are both non-zero. Then we have three cases to consider:
(1) If θ is less than a right angle (so the displacement has a positive component in the direction of the force), W is positive.
(2) If θ is equal to a right angle (so there is no displacement along the direction of the force), W is zero. Uniform circular motion provides an example of this case.
(3) If θ is greater than a right angle (so the displacement has a positive component opposite to the direction of the force), W is negative.
If the are always smiling then they are positive but if the are always perky then they are negative
If you r using an object which is positive, then if it repels its positive, it it attracts its negative.
Because like charges repel and opposite attracts.
im not really sure. but my answer is positive
A neutral atom has no charge. They form positive ions by discharging electrons and negative ions by obtaining electrons.
WEO
The compound gauge is an instrument to measure pressures, positive or negative.
The total positive charge of an ionic compound equally balances the total negative charge; therefore, the ionic compound is electrically neutral.
An ionic bond.
If there are many big numbers and some outliers it is negative but the opposite is positive
false
The compound gauge is an instrument to measure pressures, positive or negative.
Yes
Crystals in the urine are probably uric acid, although there are other possibilities such as oxalic acid. Crystals are not negative or positive, they are neutral. An ionic compound is composed of both positive and negative ions, which add up to a neutral compound.
the number that has the minus sign in front of it is negative and the normal number is positive example: negative: -9 positive: 9
Look for a + by the positive terminal and a - by the negative terminal, or red for positive, black for negative. Some batteries have the positive terminal protruding and the negative terminal flat. Or you can get a meter that will tell you which is which,
Neither. It is a neutral compound.
If both integers are positive or both negative then the quotient is positive. If they are one of each then the quotient is negative.
Large side is negative
if it repells its negitive if it attracts its positive
Post the year, make and model of the vehicle (in new question) and one of us can tell you if it is negative or positive ground.
Positive correlation = positive association Negative correlation = negative association
Well the flat of the battery is the negative side.