When a freely falling object eventually stops on reaching the ground, ______________

1. When a freely falling object eventually stops on reaching the ground, _______________.

Write Comment

Comments

By: anil on 05 May 2019 02.21 am

its potential energy decreases and its kinetic energy increases

Tags

Show Similar Question And Answers

QA->Mohamed Beji Caid Essebsi was sworn in as the first freely elected president of which country recently?....

QA->Name the spacecraft successfully test fired by NASA on December 5, 2014 which is designed to carry astronauts to an asteroid and eventually to Mars in the 2030s?....

QA->Who becomes Tunisia"s first freely elected president?....

QA->Who is the author of the best seller book ‘No Full stops in India’?....

QA->Uranium eventually decays into a stable isotope of element?....

MCQ->A person standing on the ground at point A saw an object at point B on the ground at a distance of 600 meters. The object started flying towards him at an angle of 30° with the ground. The person saw the object for the second time at point C flying at 30° angle with him. At point C, the object changed direction and continued flying upwards. The person saw the object for the third time when the object was directly above him. The object was flying at a constant speed of 10 kmph.

Find the angle at which the object was flying after the person saw it for the second time. You may use additional statement(s) if required. Statement I: After changing direction the object took 3 more minutes than it had taken before. Statement II: After changing direction the object travelled an additional 200√3 meters. Which of the following is the correct option?....

MCQ->When a freely falling object eventually stops on reaching the ground, _______________.....

MCQ-> The broad scientific understanding today is that our planet is experiencing a warming trend over and above natural and normal variations that is almost certainly due to human activities associated with large-scale manufacturing. The process began in the late 1700s with the Industrial Revolution, when manual labor, horsepower, and water power began to be replaced by or enhanced by machines. This revolution, over time, shifted Britain, Europe, and eventually North America from largely agricultural and trading societies to manufacturing ones, relying on machinery and engines rather than tools and animals.The Industrial Revolution was at heart a revolution in the use of energy and power. Its beginning is usually dated to the advent of the steam engine, which was based on the conversion of chemical energy in wood or coal to thermal energy and then to mechanical work primarily the powering of industrial machinery and steam locomotives. Coal eventually supplanted wood because, pound for pound, coal contains twice as much energy as wood (measured in BTUs, or British thermal units, per pound) and because its use helped to save what was left of the world's temperate forests. Coal was used to produce heat that went directly into industrial processes, including metallurgy, and to warm buildings, as well as to power steam engines. When crude oil came along in the mid- 1800s, still a couple of decades before electricity, it was burned, in the form of kerosene, in lamps to make light replacing whale oil. It was also used to provide heat for buildings and in manufacturing processes, and as a fuel for engines used in industry and propulsion.In short, one can say that the main forms in which humans need and use energy are for light, heat, mechanical work and motive power, and electricity which can be used to provide any of the other three, as well as to do things that none of those three can do, such as electronic communications and information processing. Since the Industrial Revolution, all these energy functions have been powered primarily, but not exclusively, by fossil fuels that emit carbon dioxide (CO2), To put it another way, the Industrial Revolution gave a whole new prominence to what Rochelle Lefkowitz, president of Pro-Media Communications and an energy buff, calls "fuels from hell" - coal, oil, and natural gas. All these fuels from hell come from underground, are exhaustible, and emit CO2 and other pollutants when they are burned for transportation, heating, and industrial use. These fuels are in contrast to what Lefkowitz calls "fuels from heaven" -wind, hydroelectric, tidal, biomass, and solar power. These all come from above ground, are endlessly renewable, and produce no harmful emissions.Meanwhile, industrialization promoted urbanization, and urbanization eventually gave birth to suburbanization. This trend, which was repeated across America, nurtured the development of the American car culture, the building of a national highway system, and a mushrooming of suburbs around American cities, which rewove the fabric of American life. Many other developed and developing countries followed the American model, with all its upsides and downsides. The result is that today we have suburbs and ribbons of highways that run in, out, and around not only America s major cities, but China's, India's, and South America's as well. And as these urban areas attract more people, the sprawl extends in every direction.All the coal, oil, and natural gas inputs for this new economic model seemed relatively cheap, relatively inexhaustible, and relatively harmless-or at least relatively easy to clean up afterward. So there wasn't much to stop the juggernaut of more people and more development and more concrete and more buildings and more cars and more coal, oil, and gas needed to build and power them. Summing it all up, Andy Karsner, the Department of Energy's assistant secretary for energy efficiency and renewable energy, once said to me: "We built a really inefficient environment with the greatest efficiency ever known to man."Beginning in the second half of the twentieth century, a scientific understanding began to emerge that an excessive accumulation of largely invisible pollutants-called greenhouse gases - was affecting the climate. The buildup of these greenhouse gases had been under way since the start of the Industrial Revolution in a place we could not see and in a form we could not touch or smell. These greenhouse gases, primarily carbon dioxide emitted from human industrial, residential, and transportation sources, were not piling up along roadsides or in rivers, in cans or empty bottles, but, rather, above our heads, in the earth's atmosphere. If the earth's atmosphere was like a blanket that helped to regulate the planet's temperature, the CO2 buildup was having the effect of thickening that blanket and making the globe warmer.Those bags of CO2 from our cars float up and stay in the atmosphere, along with bags of CO2 from power plants burning coal, oil, and gas, and bags of CO2 released from the burning and clearing of forests, which releases all the carbon stored in trees, plants, and soil. In fact, many people don't realize that deforestation in places like Indonesia and Brazil is responsible for more CO2 than all the world's cars, trucks, planes, ships, and trains combined - that is, about 20 percent of all global emissions. And when we're not tossing bags of carbon dioxide into the atmosphere, we're throwing up other greenhouse gases, like methane (CH4) released from rice farming, petroleum drilling, coal mining, animal defecation, solid waste landfill sites, and yes, even from cattle belching. Cattle belching? That's right-the striking thing about greenhouse gases is the diversity of sources that emit them. A herd of cattle belching can be worse than a highway full of Hummers. Livestock gas is very high in methane, which, like CO2, is colorless and odorless. And like CO2, methane is one of those greenhouse gases that, once released into the atmosphere, also absorb heat radiating from the earth's surface. "Molecule for molecule, methane's heat-trapping power in the atmosphere is twenty-one times stronger than carbon dioxide, the most abundant greenhouse gas.." reported Science World (January 21, 2002). “With 1.3 billion cows belching almost constantly around the world (100 million in the United States alone), it's no surprise that methane released by livestock is one of the chief global sources of the gas, according to the U.S. Environmental Protection Agency ... 'It's part of their normal digestion process,' says Tom Wirth of the EPA. 'When they chew their cud, they regurgitate [spit up] some food to rechew it, and all this gas comes out.' The average cow expels 600 liters of methane a day, climate researchers report." What is the precise scientific relationship between these expanded greenhouse gas emissions and global warming? Experts at the Pew Center on Climate Change offer a handy summary in their report "Climate Change 101. " Global average temperatures, notes the Pew study, "have experienced natural shifts throughout human history. For example; the climate of the Northern Hemisphere varied from a relatively warm period between the eleventh and fifteenth centuries to a period of cooler temperatures between the seventeenth century and the middle of the nineteenth century. However, scientists studying the rapid rise in global temperatures during the late twentieth century say that natural variability cannot account for what is happening now." The new factor is the human factor-our vastly increased emissions of carbon dioxide and other greenhouse gases from the burning of fossil fuels such as coal and oil as well as from deforestation, large-scale cattle-grazing, agriculture, and industrialization.“Scientists refer to what has been happening in the earth’s atmosphere over the past century as the ‘enhanced greenhouse effect’”, notes the Pew study. By pumping man- made greenhouse gases into the atmosphere, humans are altering the process by which naturally occurring greenhouse gases, because of their unique molecular structure, trap the sun’s heat near the earth’s surface before that heat radiates back into space."The greenhouse effect keeps the earth warm and habitable; without it, the earth's surface would be about 60 degrees Fahrenheit colder on average. Since the average temperature of the earth is about 45 degrees Fahrenheit, the natural greenhouse effect is clearly a good thing. But the enhanced greenhouse effect means even more of the sun's heat is trapped, causing global temperatures to rise. Among the many scientific studies providing clear evidence that an enhanced greenhouse effect is under way was a 2005 report from NASA's Goddard Institute for Space Studies. Using satellites, data from buoys, and computer models to study the earth's oceans, scientists concluded that more energy is being absorbed from the sun than is emitted back to space, throwing the earth's energy out of balance and warming the globe."Which of the following statements is correct? (I) Greenhouse gases are responsible for global warming. They should be eliminated to save the planet (II) CO2 is the most dangerous of the greenhouse gases. Reduction in the release of CO2 would surely bring down the temperature (III) The greenhouse effect could be traced back to the industrial revolution. But the current development and the patterns of life have enhanced their emissions (IV) Deforestation has been one of the biggest factors contributing to the emission of greenhouse gases Choose the correct option:....

MCQ-> Read the following passage carefully and answer the questions given.Do you ever feel there’s is a greater being inside of you bursting to get out? It is the voice that encourages you to really make something of your life. When you act congruently with that voice, it’s like your are a whole new person. You are bold and courageous. You are strong. You are unstoppable. But, then reality sets in, and soon those moments are history. It is not hard to put youself temporarily into an emotionally motivated state. Just listen to that motivational song for that matter. However, this motivation does not stay forever. Your great ideas seem impractical. How many times have you been temporarily inspired with a idea like, “I want to start my own business.” And then a week later it’s forgotten? You come up with inspiring ideas when you are motivated. But you fail to maintain that motivation through the action phase.The problem we ask ourselves is, why does this happen? You can listen to hundereds of motivational speakers and experience an emotional yo-yo effect, but it does not fast. The problem is that as we are intellectually guided, we try to find logic in emotional motivation and as we fail to find logic eventually phases out. I used to get frustrated when my emotional motivation fizzled out after a while. Eventually, I realised that being guided by intellect, was not such a bad thing after all. I just had to learn to use my mind as an effective motivational tool. I figured that if I was not feeling motivated to go after a particular goal, may be there was a logical reason for it. I noted that when I had strong intellectual reasons for doing something. I usually did not have trouble taking action.But when my mind thinks a goal is wrong on some level. I usually feel blocked. I eventually realised that this was my mind’s way of telling me the goal was a mistake to begin with. Sometimes a goal seem to make sense on one level but when you look further upstream, it becomes clear that the goal is ill advised. Suppose you work in sales, and you get a goal to increase your income by 20% by becoming a more effective salesperson. That seems like a reasonable and intelligent goal. But may be you are surprised to find yourself encountering all sorts of internal blocks when you try to pursue it. You should feel motivated, but you just don’t. The problem may be that on a deeper level your mind knows you don’t want to be working in sales at all. You really want to be a musician. Matter how hard you push yourself in sales career, it will always be a motivational dead end.Further when you set goals, that are too small and too timid, you suffer a perpetual lack of motivation. You just need to summon the courage to acknowledge your true desires. Then you will have to deal with the self-doubt and fear that’s been making you think too small. Ironically, the real key to motivation is to set the goals that scare you. You are letting fears, excuses and limiting beliefs hold you back. Your subconscious mind knows you are strong, so it won’t provide any motivational fuel until. You step up, face your fears, and acknowledge your hearts desire. Once you finally decide to face your tears and drop the excuses, then you will find your motivation turning on full blast.What does the author want to convey when he says, “When you look further upstream, it becomes clear that the goal is ill advised.”?
....

MCQ->Which of the following statements are correct about the C#.NET code snippet given below? sample c; c = new sample(); It will create an object called sample. It will create a nameless object of the type sample. It will create an object of the type sample on the stack. It will create a reference c on the stack and an object of the type sample on the heap. It will create an object of the type sample either on the heap or on the stack depending on the size of the object.....