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the results are as followed: mass number of oscillations 10 38 20 22 30 18 40 15 The period T of the pendulum is given by the time taken divided by the number of oscillations. Determine the period of the pendulum when only one fixed mass is attached.
Weegy: Example #1 - which way will the equilibrium shift if more H2 is added to this reaction at equilibrium: N2 + 3 H2 2 NH3 Answer - the H2 amount goes up (by adding it), therefore according to LeChatelier's Principle, [ [ [ the reaction will try and use up the added H2. It does so by shifting the position of equilibrium to the right. This makes more NH3 by using up N2 and H2 Example #2 - using the same reaction, which way will the equilibrium shift if some NH3 is removed from the reaction when it is at equilibrium. Answer - according to LeChatelier's Principle, the chemical system will attempt to replace the lost NH3. The stress was to remove NH3, so the opposite is to replace it. The equilibrium position will shift to the right in order to replace some of the lost NH3. ] ] ] (More)
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Asked 8/5/2012 9:13:38 AM
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The four hydrogen nuclei that are fused together are more massive than the helium nucleus that they make. What? It is resupplied to the sun by meteoroid impacts It reappears later as neutrinos It is ejected from the star in flare activity It is converted to energy
Weegy: The Sun generates energy in its core via a type of nuclear reaction known as nuclear fusion. Basically, the tremendous heat and pressure at the heart of the Sun causes the nuclei of several hydrogen atoms to fuse together to form helium atoms. [ When this happens, a relatively small portion (less than 1%) of the mass of the atoms is converted into energy. Although very little mass is lost, a large amount of energy is generated; for the conversion of mass to energy proceeds in accordance with Einstein's famous equation, E = mc2, in which c, the speed of light, is a very, very big number! ] (More)
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Asked 8/8/2012 8:02:29 PM
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The four hydrogen nuclei that are fused together are more massive than the helium nucleus that they make. Why? a.It is resupplied to the sun by meteoroid impacts b.It reappears later as neutrinos c.It is ejected from the star in flare activity d.It is converted to energy
Weegy: D) It is converted to energy. User: Westerly winds are characteristic of the...? trade-wind belts of both hemispheres. middle latitudes of the northern hemisphere only. middle latitudes of both hemispheres. middle latitudes of the southern hemisphere only (More)
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Asked 8/8/2012 8:05:14 PM
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Why is sunlight white? Why does it sometimes appear colored?
Weegy: The only safe times to view the sun are at dawn and sunset and on a cloudy day. At such times the sun is veiled with clouds or dense layers of atmosphere. Even so, it is not sensible to stare for more than a few moments, The sun never changes. [ It is always a blazing white sphere in the blackness of empty space. If Abel and Baker had seen the sun from the upper reaches of our atmosphere, it would have looked blazing white against a background of black velvety sky. We do not see the sun this way because the dense lower atmosphere filters, bends and changes the color of its rays. Even on cloudless days, the blue rays of sunlight are bent and scattered by the atmosphere - which is why the sky is blue. In popular culture, the Sun is yellow. But did you know that the color of the Sun is actually white? It’s only when light from the Sun passes through the Earth’s atmosphere that in changes in color, from white, to the yellow we see here on Earth. All stars have a color. From red dwarfs and red giants, to white and yellow stars to blue giants and supergiants. The color of a star comes from its temperature. As photons escape the interior of a star out into space, they have different amounts of energy. A star can be emitting infrared, red, blue and ultraviolet light all at the same time. They’re even emitting X-rays and gamma rays. Read more: ] (More)
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Asked 8/8/2012 8:46:08 PM
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