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In science and engineering, the weight of an object is the force acting on the object due to gravity.Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Yet others define it as the magnitude of the reaction force exerted on a body by mechanisms that counteract the effects of gravity: the weight is the quantity that is measured by, for example, a spring scale. Thus, in a state of free fall, the weight would be zero. In this sense of weight, terrestrial objects can be weightless: ignoring air resistance, the famous apple falling from the tree, on its way to meet the ground near Isaac Newton, would be weightless. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon. Although weight and mass are scientifically distinct quantities, the terms are often confused with each other in everyday use (i.e. comparing and converting force weight in pounds to mass in kilograms and vice versa).Further complications in elucidating the various concepts of weight have to do with the theory of relativity according to which gravity is modeled as a consequence of the curvature of spacetime. In the teaching community, a considerable debate has existed for over half a century on how to define weight for their students. The current situation is that a multiple set of concepts co-exist and find use in their various contexts.Affect may refer to: Affect (education) Affect (linguistics), attitude or emotion that a speaker brings to an utterance Affect (philosophy) Affect (psychology), the experience of feeling or emotion Affect display, signs of emotion, such as facial expression, vocalization, and posture Affect theory Affective science, the scientific study of emotion Affective computing, an area of research in computer science aiming to understand the emotional state of users Reduced affect display, a.k.a. emotional blunting or affective flattening, a reduction in emotional reactivity Pseudobulbar affect, a.k.a. labile affect, the unstable display of emotion Affect (rhetoric), the responsive, emotional feeling that precedes cognition Affected accent; see Accent (sociolinguistics) Affect (company), a defunct Japanese video game developerHuntlee is a planned medium-sized township near Branxton in the Hunter Region of New South Wales, Australia. The first stage of construction officially began on 25 February 2014. Land sales in the first village, which is to be called Katherine's Landing, began in late 2013.Its future was uncertain as the plans for its development had twice been knocked back in the Land and Environment Court of New South Wales. Local environmentalists had protested that development of the site would threaten surviving pockets of the endangered species Persoonia pauciflora. However, the rejection has been overturned in the New South Wales Court of Appeal as of 8 December 2011.The project plan will initially create up to 5,600 residential dwellings in four distinctive villages, with planned room for population growth. It will also include a 200ha mixed use Town Centre/downtown district catering for a range of retail, commercial, primary and secondary education uses as well as up to 1,700 downtown dwellings. Additionally, 17ha has been set aside for the Persoonia Park, part of a comprehensive conservation program established by LWP in consultation with the Department of Environment, Climate Change and Water for the propagation and protection of the endangered species Persoonia Pauciflora.תקופה | 27 דצמ׳ 2019 |
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תרומות תקשורתיות
1תרומות תקשורתיות
כותר "How Does Weight Loss Affect Students?" with Huntlee Daughtery תאריך 27/12/19 אנשים Allie Harburtson
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