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In this fast paced world where online business is the most common, it's important for you to use adverts wisely and in the correct places. There are several key principles you need to consider when placing advertorials - for example: don't place them too close to the product or service you're trying to sell. The product or service description should be enough to explain what it is. Don't overload your advertorial with graphics - make sure you can keep your readers attention with less text. A recent case study showed how poorly an advertorial was placed may harm its success. A supermarket bought an advertorial for a local alpaca farm, placed it next to the products being sold. The ad was for the sale of 'Arai alpaca socks' and the article discussed the advantages of buying alpaca socks. Three months later, sales had fallen by 20% while the number of queries for the supermarket website had gone up. The ad was therefore ineffective in communicating the message tha...

In physics, angular momentum (rarely, moment of momentum or rotational momentum ) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant. In three dimensions, the angular momentum for a point particle is a pseudovector r × p , the cross product of the particle's position vector r (relative to some origin) and its momentum vector; the latter is p = m v in Newtonian mechanics. This definition can be applied to each point in continua like solids or fluids, or physical fields. Unlike momentum, angular momentum does depend on where the origin is chosen, since the particle's position is measured from it. Just like for angular velocity, there are two special types of angular momentum: the spin angular momentum and orbital angular momentum. The spin angular momentum of an object is defined as the angular momentum about its centre of mass coordinate. T...

Orbital angular momentum in two dimensions edit Angular momentum is a vector quantity (more precisely, a pseudovector) that represents the product of a body's rotational inertia and rotational velocity (in radians/sec) about a particular axis. However, if the particle's trajectory lies in a single plane, it is sufficient to discard the vector nature of angular momentum, and treat it as a scalar (more precisely, a pseudoscalar). Angular momentum can be considered a rotational analog of linear momentum. Thus, where linear momentum p is proportional to mass m and linear speed v , p = m v , {\displaystyle p=mv,} angular momentum L is proportional to moment of inertia I and angular speed ω measured in radians per second. L = I ω . {\displaystyle L=I\omega .} Unlike mass, which depends only on amount of matter, moment of inertia is also dependent on the position of the axis of rotation and the shape of the matter. Unlike linear velocity, which does not d...

Angular momentum can be described as the rotational analog of linear momentum. Like linear momentum it involves elements of mass and displacement. Unlike linear momentum it also involves elements of position and shape. Many problems in physics involve matter in motion about some certain point in space, be it in actual rotation about it, or simply moving past it, where it is desired to know what effect the moving matter has on the point—can it exert energy upon it or perform work about it? Energy, the ability to do work, can be stored in matter by setting it in motion—a combination of its inertia and its displacement. Inertia is measured by its mass, and displacement by its velocity. Their product, ( amount of inertia ) × ( amount of displacement ) = amount of (inertia⋅displacement) mass × velocity = momentum m × v = p {\displaystyle {\begin{aligned}({\text{amount of inertia}})\times ({\text{amount of displacement}})&={\t...