physics is to find a theory that explains‚ from the formation of atoms to the behavior of stars and even the origin of the universe itself‚ a theory of everything. String_theory.svg.png Legend: Matter. Molecular structure (atoms). Atom (protons‚ neutrons‚ electrons). Electron. Quarks. Strings. Source of the image Isaac newton was able
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* Compare the views of Hubble and Friedman about the expansion of the universe: Edwin Hubble’s observation In 1929‚ Edwin Hubble announced that his observations of galaxies outside our own Milky Way showed that they were systematically moving away from us with a speed that was proportional to their distance from us. The more distant the galaxy‚ the faster it was receding from us. The universe was expanding after all‚ just as General Relativity originally predicted! Hubble observed that the light
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1. Isotope – atoms of an element that have the same number of protons but different numbers of neutrons. Ex. The three forms of oxygen are called oxygen-16‚ oxygen-17‚ and oxygen-18. They all have 8 electrons and are written as 16/8 O (8 protons + 8 neutrons)‚ 17/8 O (8 protons + 9 neutrons)‚ and 18/8 O (8 protons + 10 neutrons). 2. 3. Mass Number – the sum of the protons and neutrons in the nucleus of one atom of a particular element. Atomic Mass Unit (u) – a unit of mass that is
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1) Demonstrate understanding of the terms atom and molecule. Atom= Smallest Unit of Matter Molecule= 2 or more atoms chemically bonded. 2) Describe paper chromatography. 3) Interpret simple chromatograms. A method used to separate a Solution‚ using a Paper and a beaker of water. The Substances in the Paper go up depending on their Mass. We can say that a Solution has the same substance as another solution because they form a line of the same height. 4) Describe methods of separation
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This Document is provided by www.manabadi.com for FREE for the benefit of Intermediate students. Copying and redistribution by any company/ website is illegal and Manabadi.com has all rights to claim on such type of website or company. Physics – II year – Model question paper – 2013 – 2014 Section – A I Very short answer questions 10× 2 = 20 M Answer all questions‚ each carries two marks. (1) What are beats? (2)Can there be electric intensity at a point with zero electric potential
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nucleus made up of neutrons and protons‚ and electrons moving extremely fast around the nucleus‚ forming an electron cloud instead of moving in orbits like what Bohr’s model suggests - proposed by Erwin Schrodinger in 1926‚ when he derived this model using a mathematical equation that he himself made http://1.bp.blogspot.com/-LEqGPr4h8R4/TsgJyT6vP6I/AAAAAAAAAKE/pTl6O3V2u0M/s200/electron_cloud_model.jpg The Planetary/Bohr’s Model - an atom is comprised of a nucleus made up of neutrons with a neutral
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On the morning of August 6‚ 1945‚ a B-29 bomber named Enola Gay flew over the industrial city of Hiroshima‚ Japan and dropped the first atomic bomb ever. The city went up in flames caused by the immense power equal to about 20‚000 tons of TNT. The project was a success. They were an unprecedented assemblage of civilian‚ and military scientific brain power-brilliant‚ intense‚ and young‚ the people that helped develop the bomb. Unknowingly they came to an isolated mountain setting‚ known as Los Alamos
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Unlocking the Secrets of the Universe Increasing our knowledge of Physics‚ using the scientific method to make observations and test hypotheses is essential to unlocking the secrets of the universe. Energy is one of the most fundamental elements of the universe. Throughout history‚ man has endeavored to expose‚ understand‚ and explain how and why things work. This drive to expand our understanding eventually led to the development of the scientific method and what is commonly considered
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technetium-99m‚ indium-111‚ iodine-123 (pictured above)‚ xenon-133‚ and thallium-201. For therapy‚ yttrium-90 and iodine-131 are commonly used. Many radioisotopes are made in nuclear reactors‚ some in cyclotrons. Generally neutron-rich ones need to be made in reactors‚ neutron-depleted ones are made in cyclotrons. Nuclear medicine is a branch of medicine that uses radiation to provide information about the functioning of a person’s specific organs or to treat disease. In most cases‚ the information
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Study Guide GEOL 1500 test #1 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What are the basic differences between the disciplines of physical and historical geology?|1)| A) physical geology is the study of fossils and sequences of rock strata; historical geology is the study of how rocks and minerals were used in the past B) physical geology involves the study of rock strata‚ fossils‚ and deposition in relation
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