We consider theories for scalar and vector fields coupled to the energy-momentum tensor. Since these fields also carry a non-trivial energy-momentum tensor, the coupling prescription generates self-interactions. In analogy with gravity theories, we built the action by means of an iterative process ...
Since linear momentum is the product of a scalar and a vector quantity, it is a vector and hence has both magnitude and direction. According to the general statement of Newton's second law, for a force F , a momentum P , and a time t, Eq. (2) holds. (2) Thus Newton's second ...
Are impulse and momentum scalar or vector quantities? Is momentum conserved in a collision? Is momentum conserved in an inelastic collision? Which of the following statements best describes the difference between momentum and inertia? a) Momentum depends on position, while inertia does not. b) Mome...
The SI units of momentum are kg·m/s or N·s, and imperial units are lbs·ft/s. Since mass is a scalar and velocity is a vector, momentum is also a vector quantity, with the same direction as the velocity. Let us consider how to calculate momentum with some examples: A person weig...
Vector (magnitude and direction) Scalar (magnitude only) 15 Role in Physics Describes how motion changes with force Explains resistance to changes in motion 13 Transferability Can be transferred between objects Cannot be transferred; inherent to object 15 Compare with Definitions Momentum Momentum helps...
A metasurface, which consists of a one- or two-dimensional array of nanostructures, serves as an excellent platform for the creation and encoding of phase profiles derived from CGH with a high spatial resolution [23,24,25]. Depending on the specific design, the individual structural units of ...
Poynting vectorangular momentumIt is shown that physical manifestations of any optical singularity are, in one way or another, related to a specific temporal behaviour of the field, no matter scalar or vector cases are realized. Polarization singularities of the vector field are associated with a ...
Is momentum a vector or a scalar quantity? Vector Is the following sentence true or false? The law of conservation of momentum states that, in the absence of an external force, the momentum of a system remains unchanged. True Is the following sentence true or false? If a system undergoes ...
& Sato, S. Generation of hollow scalar and vector beams using a spot-defect mirror. JOSA A 27, 2072–2077 (2010). Article ADS Google Scholar Kano, K., Kozawa, Y. & Sato, S. Generation of a purely single transverse mode vortex beam from a He–Ne laser cavity with a spot-defect...
Because the product of m and v is the product of a scalar and a vector quantity, p is a vector quantity. Further, the direction of the momentum p is the same as that of the velocity v of the particle. Equation (6-15) defines linear momentum, and the physical significance of momentum...