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This question is ill-formed. You do not specify which particle you mean, nor what you mean by negative x-direction. Note that coordinate systems in physics are relative; they have no affect on physics, and can thus be chosen in any convient way. I could define your negative x-direction to be the positive x-direction if I wished to do so.
what I mean is, the alcubierre drive needs negative energy to work so what are the properties of negative energy
the lines mean that the positive is going on to the negative
Did you mean "The strength of electric field is positive or negative"? Anyway, there is your answer.. The strength of an electric field E at any point is defined as the electric force F exerted per unit positive electric charge q at that point, or E = F/q.You can say that it is positive.
It is not true. It means that the object MIGHT be decelerating but not "always" (as your friend says). Instead, think of it this way... We start by clarifying that there is no such thing as "negative acceleration" per se. That is, that acceleration is a vector composed of an absolute value scalar and a direction. So "negative acceleration" actually refers to an acceleration which just happens to be in the negative direction of whatever coordinate system you've chosen to define for the particular problem. We define a coordinate system (for a two dimensional universe to keep things simple) with positve/negative x and y. If the object starts out already moving in the positive X direction, then to apply an acceleration in the negative direction would mean there is deceleration. If the object is stationary or moving in the negative X direction, then applying an acceleration in the negative X direction would actually be accelerating the object. In other words, the reference from has to stay constant for there to be meaningful discourse on the subject. By the same note, even moving in the positive X direction, if the object is acclerated in the negative Y direction then the object is actually accelerating.
A positive value is a value that is greater than zero. A negative value is a value that is less than zero.
No. The absolute value is non-negative but, to be pedantic, that does not mean positive. The absolute value of 0 is 0 which is NOT positive.
Non-negative means either zero or positive.
Negative z value means that the raw dat is below the mean, if z value is positive it means that the raw data is above the mean.
No it is not true. The absolute value of a number is simply the value of the number with a positive sign.
Yes, if you mean is it a higher value.
Use the context: if the variable should be greater than the mean then z is positive and if less than the mean, it should be negative.
If you mean the difference in terms of numerical value, then it is the positive faction minus the negative faction, which is calculated as the positive fraction plus the absolute value* of the negative fraction - just like the difference between a positive and negative number. * The absolute value of a number is the value of the number ignoring any minus sign; eg abs(-4) = 4 = abs(4). If you mean the difference in terms of where they are on the number line, then the positive fraction is one side of zero (it is greater than zero) and the negative fraction is the other side of zero (it is less than zero).
its negative! negative reply, answer that is not positive
positive
This question is ill-formed. You do not specify which particle you mean, nor what you mean by negative x-direction. Note that coordinate systems in physics are relative; they have no affect on physics, and can thus be chosen in any convient way. I could define your negative x-direction to be the positive x-direction if I wished to do so.
RMS is root mean square in physics. RMS is Railway Mail Sevice in postal net work rms ie root mean square is got first squaring the positive and negative values to make them all positive. Then mean is taken. After that we have to take square root of the mean square. So square Root of the Mean value of the Squares of the values. Hence the name