discoverer of polonium and radium International Radioactivity Symbol Function: noun / Symbol Po and Ra Definition: A rare‚ brilliant white‚ luminescent‚ highly radioactive metallic element found in very small amounts in uranium ores. It is used in cancer radiotherapy‚ as a neutron source for some research purposes‚ and as a constituent of luminescent paints. CONTRIBUTION to SOCIETY Marie Curie is best known as the discoverer of the radioactive elements polonium and radium and as
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Measuring Time Date Due: 2013.09.23____ Name: Lily Li____ Class: A__ Teacher: ___Mrs Slater___ Purpose: To determine the period and the frequency of a ticker timer. Materials/Apparatus: One ticker timer One carbon paper disc One 1.5+ meter tape One test tape One stop-watch Theory: The recording timer is a device that helps you study motion‚ it is a simple electric device plugged
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The Setting of Everyday Use In the short story‚ "Everyday Use"‚ author Alice Walker uses everyday objects‚ which are described in the story with some detail‚ and the reactions of the main characters to these objects‚ to contrast the simple and practical with the stylish and faddish. The main characters in this story‚ "Mama" and Maggie on one side‚ Dee on the other‚ each have opposing views on the value and worth of the various items in their lives‚ and the author uses this conflict to make the
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Determine the electrical force of attraction between two balloons that are charged with the opposite type of charge but the same quantity of charge. The charge on the balloons is 1.2 x 10-8 C and they are separated by a distance of 0.40 m. 2. Determine the electrical force of attraction between two balloons that are charged with the opposite type of charge but the same quantity of charge. The charge on the balloons is 6.5 x 10-7 C and they are separated by a distance of
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Prediction I think that the speed of the cart will decrease as more weight is added on top of the cart. This is because the more weight that is placed on the moving vehicle/object‚ the more downward force is produced. This would increase the friction between the wheels of the cart and the ramp’s surface. The increase in friction would slow down the moving object (cart). Apparatus Trolley/cart- this is essentially a wooden block with wheels and a rubber end‚ to provide the collision with a
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Step 1: The hand holding the the weight in the pendulum will release the weight and allow it to swing forward to hit the car. This is potential energy by the force of motion of the weight on the pendulum. Potential energy is the energy an object produces due to its position. The pendulum swinging is it being in motion therefore it has kinetic energy. The force shown form this could be Applied Force. Applied force is a force that is applied to an object by a person or another object. Step 2: After
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Outline: I. Introduction – Thesis statement. A. In “Everyday Use”‚ the issue of race is perceived and discussed differently in country and urban settings. B. “Two Kinds”‚ demonstrate that parents have no control over their children’s lives; both authors describe a childhood conflict they can only show them the right direction and let them make their own decisions. II. Body A. Jing-mei’s early life‚ works ‚ later years of life 1. Jing-mei mother persists with piano 2. Jing-mei
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is finding the density of a bone and determining it whether it is osteoporosis‚ osteopenia‚ or osteopetrosis. The last activity determines the density of a regular and diet soft drink in relation with the density of water in which a pycnometer was used to get their densities. 1. Introduction Relative density‚ or specific gravity‚ is the ratio of the density of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water. The term
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“Cartoon Physics‚ Part 1” Nick Flynn centers “Cartoon Physics‚ Part 1” around childhood innocence. He very strongly urges not only parents‚ but anyone around a young child to not force upon them knowledge they do not need to know. Flynn captures the simple kid mind and harsh reality with tone‚ imagery‚ figurative language‚ and even the form of the overall poem. There is a stark contrast between tones in the passage. In the first few lines the tone is cold; detached. The actual physics of the never-ending
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verse. There is no rhyme scheme. There are four longer verse paragraphs‚ a shorter one and two single isolated lines. This kind of structural arrangement contributes to the effect of irony. It also helps to grasp the main points clearly. The language used in the poem is very simple on account of which the thought sequence of the poem is presented clearly. Theme and Summary of the poem The poem “A River” written by A.K. Ramanujan is a satire on sensation loving poets who were indifferent to human suffering
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