structures which means that structure means how a item is put together Contain nucleus‚ which contains protons and neutrons Protons: have an electrical charge and will weigh one atomic mass unit. Neutrons: are chargless. Hence neutral. Will weigh one atomic mass unit. Electrons: will be found moving around the nucleus. Will have a negative charge. Do not have any weight meaning they are weightless and have no atomic mass. Read about Isotopes‚ radioisotopes Molecules/compound Molecules
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is a polymer material that strengthens when heated and cannot be remolded or reheated after the initial baking process. Pieter de Lange also invented the electrostatic spray process in 1962. This process includes giving a negative charge to the object being painted and then grounding it. The paint is then given a
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that displayed high levels of energy. They had the ability to‚ when covered with a saucer-shaped cathode‚ heat a piece of aluminum until it turned red. Beta rays were described as being streams of particles bent in a magnetic field with a negative charge. These beta rays were proven to be minute in size and collectively only amounted to the mass of the smallest known atom. They were all found to be identical despite their origin. Some scientists speculated as to their purpose in the universe. Some
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were just rallied days before from South Carolina. The rebel force charged up the mountain screaming and firing their muskets from behind natural barricades. The Loyalists were unaware and were caught off gaurd; Ferguson rallied his troops and led charges down the hill. Lesser
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of ice (frozen raindrops) bump into each other as they move around in the air. All of those collisions create an electric charge. After a while‚ the whole cloud fills up with electrical charges. The positive charges or protons form at the top of the cloud and the negative charges or electrons form at the bottom of the cloud. Since opposites attract‚ that causes a positive charge to build up on the ground beneath the cloud. Thunder
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by the photon-stop because a positively charged cylinder lens guides them around it. Subsequently‚ the positive ions in the plasma are focused down the quadropole mass analyser. In the quadrupole the ions are separated on the basis of their mass-to-charge ratio. Each element has its own characteristic isotopes and masses and will therefore produce its own mass spectrum. After passing the quadrupole the ions hit a special detector. It contains two stages to allow simultaneous measurements of high and
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rates have been observed to depend on aspect ratio ~ depth/width ! rather than the absolute feature size. 1 Several mechanisms have been invoked to explain the ‘‘rule’’ of aspect-ratio-dependent etching ~ ARDE ! ‚ but no general theory has emerged that captures the variety of seemingly conflicting experimental observations reported in the literature. 1‚2 For example‚ while an ion-neutral synergy model with pure neutral flux shadowing appears to be con- sistent with a wealth of
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OPTICS & PHYSICAL OPTICS MODERN PHYSICS ELECTRICITY & MAGNETISM • Electric Charges‚ Forces & Fields • Electric Potential & Electric Potential Energy • Electric Current & Direct Current Circuits • Magnetism • Magnetism Flux & Faraday’s Law of Induction • Electromagnetic Waves Electric Charges‚ Forces‚ and Fields • Electric Charge • Insulators and Conductors 19-1 Electric Charge The effects of electric charge were first observed as static electricity: • Coulomb’s Law • The Electric Field
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compound. Ionic bonding is the bond that creates ionic compounds. During the bond‚ some atoms are more stable when they lose or gain electrons to form ions. Since the numbers of electrons don’t match the umber of protons‚ that is why they create a net charge. Galvanization is named after an Italian scientist named Luigi Galvani. Galvanization is the process by which zinc is coated onto corrosive metals. This process refers to any of the several electrochemical processes. During the process‚ zinc simply
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nation to improve the lives of its citizens. There are various forms of energy but here our discussion will be on solely on electricity and how it contributes to national development. Electricity is an energy made available by the flow of electric charge through a conductor. We use electricity every day‚ thus without it we would not be able to watch television‚ listen to radio‚ heat our food and among others. The main purpose of this essay is to discuss the respective ways in which energy (electricity)
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