# What is scalar in term of physics?

A scalar is any quantity that only has an amount, such as mass energy. You only need a number and a unit to specify these. This is in contrast to quantities that have an amount and a direction, which are called vectors: things like displacement or momentum.

### Define scalar quantity?

There are two types of quantities in Physics scalar and vector. The square of Scalar quantities are positive numbers. The term Scalar was used to denote size or scale not direction. Scalar numbers have direction referred to the attraction negative or repulsion positive. For example potential energy is a scalar energy E = -mGM/r the negative sign on this scalar denotes gravitational attraction.

### Is force a scalar?

Definitely no. Its a vector since the reaction for a force is different when applied in different directions. Answer2: Force can be a scalar or a vector, F= mv2/r is a scalar force and F= hc/r2is also a scalar . Fields in Physics are generally both scalar and vector or Quaternions. For example Work = FD= -F.d + FxD, the first term -F.D is scalar called work and the second term FxD is a vector…

### Is Kinetic energy scalar or vector quantity?

Kinetic energy is defined as scalar energy. Physics is confused by defining energy as only scalar. Energy is a Quaternion quantity, consisting of a scalar energy and a vector energy. I call vector energy kinetic energy, e.g cmV=cP kinetic energy. This confusion can be seen by the product of a force vector F and a vector displacement D; FD= -F.D + FxD = -FDcos(FD) + FDsin(FD) 1FxD, The cosine term is scalar energy and is…

### Why work is scalar quantity where as force and displacement are vector quantity?

Work is the product of a force a nd a displacement. Both of those are vectors. There are two ways to multiply vectors. One of them produces another vector, the other produces a scalar. The calculation for 'work' uses the scalar product. The procedure is: (magnitude of one vector) times (magnitude of the other vector) times (cosine of the angle between them). Answer2: Work is a scalar because Physics has a major defect in defining…

### What is the energy of any moving object called?

Vector energy. This term is not widely known or used. Physicists declare energy a scalar quantity, including the term kinetic energy. A moving object is uniformly assumed to have Momentum, a vector quantity.The energy associated with Momentum is Momentum Energy, cP (This is the widely looked for "Dark energy") Physicists use a term for another vector energy, Torque . Physicists use Joule for scalar energy and Newton-Meter for Torque, a vector energy. The Physics Community…

### In work definition we use only displacement why we didn't use distance in work definition?

Some Physics definitions ignore the real world of Nature. Forces and distances are four dimensional including real and vector quantities. Work is defined as the scalar product of two vectors and ignores the scalar cross distances and vector cross products.. Gravity is a scalar force and gravitatinal potential energy is mgh where mg is a scalar force and h is a scalar distance. This is not called work because it is not the scalar product…

### Is tension a scalar or vector?

tension is a vector!(At first I thought it was a scalar too but this afternoon it was in our physics quiz,I answered scalar but I got it wrong because tension is a vector). this is the explanation: tension is the force producing such deformation. anything with force is a vector.Force always has direction.

### Is work done scalar or vector?

Physics as taught in high school would say that work is a scalar quantity. More sophisticated forms of physics would say that work done is a Quaternion, both a scalar and a vector. Work is both w= [0,F][0,D]=[ 0 - F.D, 0 + 0 + FxD] = [-F.D, FxD] = -F.D + FxD. -F.D = -FDcos(FD) is scalar work out, and w= FxD= FDsin(FD) a vector called Torque.

### What happens when a scalar and vector are multiplied?

A scalar times a vector yields another vector. The new vector has the same direction as the original vector and the new magnitude is equal to the product of the old magnitude and the scalar. (Of course, if the scalar is a negative quantity, we understand that the new vector then points in the opposite direction as the original and the new magnitude is the absolute value of the product of the scalar and the…

### Why is work a scalar quantity?

Work is a scalar because it is "defined" to be the "scalar product" of force and displacement, w=f.d= -fd cos(a). The product of force and displacement vectors has two products, w = f.d + fxd = -fdcos(a) + fdsin(a) . The vector product is called torque and the scalar product is called work. Physics needs to recognize that the quaternions are the numbers of the Universe. That is the Universe is composed of real and…

### What is difference between a vector and a scalar?

A quantity is a vector if its direction makes a difference, like force and speed. A quantity is a scalar if its direction doesn't make any difference, like temperature and price. Answer2: The difference between a vector and a scalar is the angle. Numbers in Physics are scalars and vectors. Both scalars and vectors are parts of a quaternion. Quaternions consist of a scalar and a three vectors, Q = w + Ix + Jy…

### Why can't you add a vector quantity to a scalar quantity?

You can add a vector quantity to a scalar quantity. A complex number is just such an addition, z= a + bi. the first term 'a' is a scalar and the second term 'bi' is a vector quantity. The complex quantity z is the sum of a scalar and a vector. z is a different quantity than 'a' or 'bi', it contains both a scalar and a vector z=(a,bi). The Universe is made up of…

### Is relativity relevent?

Think of c = sqrt (E/m)C is a representation of a physics constantE is a scalar recursive relationship of space/time relating energy causallym is a scalar recursive relationship of space/time relating mass causallyThe constant shows the scalar constant between these evolving causal systems of relationships (i.e. Relativity).Quantum Entangled Systems (QES)

### What is the definition of classical physics?

Classical physics is the physics without considering quantum mechanics. This is the type of physics practiced by for example Newton (you might also come across the term Newtonian physics). General relativity is also a classical theory. The distinction is often used because quantum mechanics changed quite a bit in many fields of physics, so the term 'classical physics' allows for a clear distinction. The opposite of classical physics would be quantum physics.

### Is work a scalar or vector?

Work is scalar Work W is both a scalar (F.D) and a vector (FxD), in short work is a Quaternion, W = [0,F][0,D]= [00 -F.D, 0D + F0 + FxD] = [-F.D, FxD] . Physics has yet to recognize that Work and Energy are Quaternions and thus define work and energy as a scalar. Nature and mathematics recognize work as as a Quaternion manifested by the reality of F.D and FxD. Work is a scalar…