What Is the Difference Between Weight and Mass

The terms mass and weight are used interchangeably in ordinary conversation, but the two words dont mean the same thing. The difference between mass and weight is that mass is the amount of matter in a material, while weight is a measure of how the force of gravity acts upon that mass. Mass is the measure of the amount of matter in a body. Mass is denoted using m or M.Weight is the measure of the amount of force acting on a mass due to the acceleration due to gravity. Weight usually is denoted by W. Weight is mass multiplied by the acceleration of gravity (g). ï » ¿Wmâˆâ€"gW m * gWmâˆâ€"gï » ¿Comparing Mass and Weight For the most part, when comparing mass and weight on Earth—without moving!—the values for mass and weight are the same. If you change your location with respect to gravity, mass will remain unchanged, but weight will not. For example, your bodys mass is a set value, but your weight is different on the Moon compared with on Earth. Mass is a property of matter. The mass of an object is the same everywhere. Weight depends on the effect of gravity. Weight increases or decreases with higher or lower gravity. Mass can never be zero. Weight can be zero if no gravity acts upon an object, as in space. Mass does not change according to location. Weight varies according to location. Mass is a scalar quantity. It has magnitude. Weight is a vector quantity.It has magnitude and is directed toward the center of the Earth or other gravity well. Mass may be measured using an ordinary balance. Weight is measured using a spring balance. Mass usually is measured in grams and kilograms. Weight often is measured in newtons, a unit of force. How Much Do You Weigh on Other Planets? While a persons mass doesnt change elsewhere in the solar system, the acceleration due to gravity and weight varies dramatically. The calculation of gravity on other bodies, as on Earth, depends not just on mass but also on how far the surface is from the center of gravity. On Earth, for example, your weight is slightly lower on a mountain top than at sea level. The effect becomes even more dramatic for large bodies, such as Jupiter. While the gravity exerted by Jupiter due to its mass is 316 times greater than that of Earth, you wouldnt weigh 316 times more because its surface (or the cloud level we call the surface) is so far out from the center. Other celestial bodies have different values of gravity than Earth does. To get your weight, simply multiply by the appropriate number. For example, a 150-pound person would weigh 396 pounds on Jupiter, or 2.64 times their weight on Earth. Body Multiple of Earth Gravity Surface Gravity (m/s2) Sun 27.90 274.1 Mercury 0.3770 3.703 Venus 0.9032 8.872 Earth 1 (defined) 9.8226 Moon 0.165 1.625 Mars 0.3895 3.728 Jupiter 2.640 25.93 Saturn 1.139 11.19 Uranus 0.917 9.01 Neptune 1.148 11.28 You may be surprised by your weight on other planets. It makes sense that a person would weigh about the same on Venus, because that planet is about the same size and mass as Earth. However, it may seem odd that youd actually weigh less on the gas giant Uranus. Your weight would be only slightly higher on Saturn or Neptune. Although Mercury is much smaller than Mars, your weight would be about the same. The Sun is much more massive than any other body, yet youd only weigh about 28 times more. Of course, youd die on the Sun from the massive heat and other radiation, but even if it were cold, the intense gravity on a planet that size would be deadly. Resources and Further Reading Galili, Igal. â€Å"Weight versus Gravitational Force: Historical and Educational Perspectives.† International Journal of Science Education, vol. 23, no. 10, 2001, pp. 1073-1093.Gat, Uri. â€Å"The Weight of Mass and the Mess of Weight.† Standardization of Technical Terminology: Principles and Practice, edited by Richard Alan Strehlow, vol. 2, ASTM, 1988, pp. 45-48.Hodgman, Charles D., editor. Handbook of Chemistry and Physics. 44th ed., Chemical Rubber Co, 1961, pp.  3480-3485.​Knight, Randall Dewey. Physics for Scientists and Engineers: a Strategic Approach. Pearson, 2004, pp 100-101.Morrison, Richard C. â€Å"Weight and Gravity—The Need for Consistent Definitions.† The Physics Teacher, vol. 37, no. 1, 1999.

understand and enable positive interaction and...

Unit 371 – Understand and enable positive interaction and Communication with individuals who have dementia. 1.1 Losing the ability to communicate can be one of the most frustrating and difficult problems for people with dementia, their families and carers. As the illness progresses, a person with dementia experiences a gradual lessening of their ability to communicate. They find it more and more difficult to express themselves clearly and to understand what others say. Each person with dementia is unique and difficulties in communicating thoughts and feelings are very individual. There are many causes of dementia, each affecting the brain in different ways. Some changes include: Difficulty in finding a word. A related word might†¦show more content†¦1.3 If a person’s hearing or sight is impaired, body language and tone of voice will become more important. They may also need to learn new skills such as sign language or lip reading in order to be able to communicate. Making sure the persons glasses is the correct prescription, that their hearing aids are working properly, that they are looking at your face when you speak so that they can lip read, keeping your communication simple and clear, using visual prompts, light touches to their arms to gain attention etc. If a condition or impairment develops suddenly, you’ll need to re-evaluate your methods of communication with that person. It might feel strange at first, but you might need to consider your tone of voice, how quickly you speak and how you use body language and gestures to emphasise what you are saying. It’s a good idea to express this to the person you care for and find out what helps them or makes your communication clearer. 1.4 The impact the behaviours of carers and others may have on an individual with dementia include becoming more confused and frustrated as they do not understand what you are telling, are using body language that suggests something different to what you are saying. They may feel you are telling them off orShow MoreRelatedUnderstand and enable interaction and communication with individuals who have dementia888 Words   |  3 Pagesï » ¿Unit 51 Understand and enable interaction and communication with individuals who have dementia Unit code: Dem 312 1. Understand the factors that can affect interaction and communication of individuals with dementia 1.2 Explain how physical and mental health factors may need to be consider when communicating with an individual who has dementia. There are many factors to consider such as pain, pain can cause misunderstandings as individuals may be in so much discomfort they cannot what theyRead MoreEnable Rights and Choices of Individuals with Dementia Whilst Minimising Risks1007 Words   |  5 PagesEnable rights and choices of individuals with dementia whilst minimising risks Task 1 Key legislations such as Human rights act 1998 Mental capacity act 2005 Adults with incapacity (Scotland) act 2000 Mental health act 2007 The disability discrimination act 1995 Safeguarding vulnerable groups act 2006 Carers (equal opportunities) act 2004 Are all laws put into place to help protect an individual from abuse whilst ensuring they can still for fill their right and maintainRead MoreCerebrum and Dementia Care Unit-21819 Words   |  8 Pageswhat is meant by the term `dementia Unit-1, Q2. 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Angry Men free essay sample

The character in this movie that was the most effective critical thinker was juror 8(Henry Fonda). The types of characteristics that Fonda, exemplify is provisionalism, creativity, and critical thinking. By doing this he is uncover new ways of interpreting evidence, turns to certainty and shortsightedness when arriving at conclusions. For example, Fonda commented on how the boy had been slapped around all his life and was treated poorly. This kind of thinking leads to more external attributions—it was the way the boy was treated in life, not something inherent about the boy or his character. Next Fonda asks the jurors to consider the larger picture: the defendants background, the witnesses credibility, and the defending attorneys motives. He then shakes up the room by presenting a knife identical to the murder weapona weapon that the jurors were certain was unique. At this point, he has them wavering about reasonable doubt. Fonda was clearly self-confident. He had complete conviction in what he was doing and saying which instilled confidence in other members of the jury who were leaning in that direction a guilty verdict. The character that is the least effective critical thinker is juror 3 (Lee J. Cobb). Cobb made more internal attributions for the boy’s behavior. He agreed with the slum kid idea, but also focused on the notion that kids today don’t have any respect or sense of morality. He is basing this decision on his own life situation because of his poor relationship with his son. Cobb categorizes the defendant as a rebellious kid and wants to persecute him. Another example is when Henry Fonda insulted Lee Cobb by calling him a sadist and that due to his own beliefs. Cobb got mad and said: â€Å"I’m gonna kill ya. † Thus, when Cobb said it, it was just the situation that provoked this expression, but when the boy said it, it was an indication of his murderous rage. So this is an example of Cobb is view as bias. The other jurors are shocked that he seems to have forgotten the sure and certain facts of the case that prove the defendants guilt. Now these are facts, you cant refute facts as stated by Cobb. The barriers that prevented three other jurors were racist, baseball fan, advertisement. Ed Begley was racist this become a barrier when thinking ritically because he is so ingrained in the way of his life. He is not simply accepting information at face value in a non-critical or non-evaluating way. He feel that because the boy as a slum kid this is stereotypes which lead to a biased way of interpreting the evidence. He relayed the idea that there’s something about slum kids who belong to certain ethnic groups that makes them i nherently rotten. These are internal attributions which lead to more of a guilty verdict. Jack Ward barrier was that he wants to conform with the majority in order to quickly end the deliberations so he can attend a ballgame. He was selfish and inconsiderate that another person life was at stack. He also stated the he had enough of all the talking and wasn’t going to say nothing. But when was asked why he could not response why. Webber was continually strays off course with advertising stories and slogans. His job was getting in the way of his decision. Not staying focus on what is going on can lead to the wrong decision. Towards the middle of the movie Sweeny, Marshall, and Voskovec all become critical thinkers. Sweeny initially conformed in the public vote, but switched when it was private—suggesting that he went along with the crowd. But then later he remembers information that the eye witness stated. Sweeny did not accuse either of the eye witnesses of lying but question the information. He said that these people believed they saw the boy commit the crime. In other words, they somehow misremembered what they saw and heard. Thus, they probably witnessed an ambiguous event and filled in the missing information with details that were prescribed by their own stereotypes of slum kids. In addition, the police officers and lawyers who interviewed the witnesses may have planted false memories in them by asking leading questions. In either case, these people probably believed that they saw the boy at the scene of the crime—but this was probably due to the misinformation effect. With Marshall at first he refuses to budge until he is presented with sound reasons for changing his mind. He went by the boys alibi was that he was at the movies when the murder took place. Marshall said that because the boy couldn’t remember the names of the films and who played in them when he was interviewed by the police then he obviously was lying but he remembers that the boy was under conditions of high emotional stress. Thus Marshall failed to consider how the stress of the situation could have affected the boy—and just made an internal attribution that he is a liar. However, when Marshall was asked to remember the films he saw last weekend, he couldn’t fully remember them—even without emotional stress. Marshall also eventually changed his vote based on informational influence. He was convinced that the female eye witness had poor eyesight and therefore couldn’t make a positive identification. This was less of a superficial change. Voskovec became a critical thinker because throughout the trail he took down information that he felt was important. Then when it was time to deliberate him then took down more information that each juror had to say. By this his was gathering important information to base his decision on whether the boy is guilty or not. The four types of logical fallacies that are present in the jurors thinking process are flaws in thinking, illogical sequences of thought, stereotyping, obfuscation, and other typical critical thinking errors displayed in the movie as the characters move through the stages of critical thinking development. Fonda and Cobb revealed an emotional argument: The whole debate in which one character called the other a sadist. A scuffle occurred afterward. Ed Begley revealed unqualified generalization: he was a racist who hated slum-kid such as the defendant. He went on a rant in which he claimed not a one of them are any good. Sweeny showed false analogy: When he mentions how the one of the witnesses in the trial just made a up a story to get attention. The character said that he knew because he would have done the same thing, were he as lonely as the witness.

People are too dependent on computers

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