No, vector, besides a value, has also a direction.
The sign convention resulting from the above definitions is that positive values indicate a direction or quantity that is considered to be in the same direction as the chosen positive axis, while negative values indicate a direction or quantity that is opposite to the chosen positive axis.
In physics, a positive value typically indicates a quantity that is greater than zero, while a negative value indicates a quantity that is less than zero. Positive and negative values can represent different physical properties, such as direction, charge, energy, or force, depending on the context in which they are used.
can a magnitude of a vector has negative value?
The Hounsfield unit of water is 0. It serves as the reference point in Hounsfield units, with densities higher than water having positive values and lower densities having negative values.
A quantity having continuous values is one that can take on any value within a certain range, including decimal and fractional values. Examples include temperature, weight, height, and time. These quantities can vary continuously without any abrupt jumps between values.
First of all you must be familiar with scalar and vector quantities. A scalar quantity is a physical quantity having only magnitude example length. A vector quantity is a physical quantity having both magnitude and directions. Now speed and distance are both scalar quantities which means their values are always positive. But if you considered velocity then there can be a negative value. Velocity is measured w.r.t the direction the object is going. Conventionally the direction is negative if the object is moving to the left of the initial point and positive for the other way.
The sign convention resulting from the above definitions is that positive values indicate a direction or quantity that is considered to be in the same direction as the chosen positive axis, while negative values indicate a direction or quantity that is opposite to the chosen positive axis.
In physics, a positive value typically indicates a quantity that is greater than zero, while a negative value indicates a quantity that is less than zero. Positive and negative values can represent different physical properties, such as direction, charge, energy, or force, depending on the context in which they are used.
A scalar quantity may have positive and negative values - it is simply a real number. But it doesn't have a direction. Think of it as a "vector in one dimension" - whereas the usual vectors have at least 2 dimensions.
If you subtract a negative from a positive, add both of their absolute values. If you subtract a positive from a negative, add both of their absolute values and multiply by negative one.
can a magnitude of a vector has negative value?
[ -2n ] is positive for all negative values of 'n' .
No. Probability values always have to be positive.
That depends on the values of the given numbers but a positive number multiplied by a negative number will be negative
Positive for nonmetals and negative for metals
Zero is the figure or symbol 0, which in the Arabic notation for numbers stands for the absence of quantity. It is a mathematical value intermediate between positive and negative values.
If the points have both positive y-values and x-values it is quadrant 1 If the points have a negative x-value and a positive y-value it is quadrant 2 If the points have both negative y-values and x-values it is quadrant 3 If the points have a positive x-values and a negative y-value it is quadrant 4