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.
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.
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' .
That depends on the values of the given numbers but a positive number multiplied by a negative number will be negative
No. Probability values always have to be positive.
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.
The sum of two integers can be positive, negative, or zero, depending on the values of the integers involved. If both integers are positive, their sum is positive. If both are negative, their sum is negative. If one is positive and one is negative, the sum could be positive, negative, or zero, depending on their absolute values.