CHAPTER 1 ELECTRICAL FORMULAS OHM’S LAW/POWER FORMULAS R x I2 E x I P R P E E2 RxI R P I P x R E I P I E R E R P I2 E2 P P = Power = Watts R = Resistance = Ohms I = Current = Amperes E = Force = Volts 1-1 OHM’S LAW DIAGRAM AND FORMULAS E I E = I x R I = E ÷ R R = E ÷ I R Voltage = Current x Resistance Current = Voltage ÷ Resistance Resistance = Voltage ÷ Current POWER DIAGRAM AND FORMULAS P E I = P ÷ E E = P ÷ I P = I x E I Current = Power ÷ Voltage
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understanding upon the structure of the atom. Before Rutherford‚ there was a man named Joseph John Thomson who proposed the structure of the atom. He stated that the electrons of the atoms are actually inside the atom‚ and the atom itself is positively charged‚ like a “raisin pudding”. The electrons are scattered all around the atom. He stated that the electrons and the positively charged material cancel each other‚ making it stable. The structure of the atom‚ proposed by Thomson. (J.J Thomson Plum
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conditioning is through manipulating stimulus to increase or decrease responses or a certain behavior. This is seen in positive reinforcement/punishment and negative reinforcement/punishment methods. In the reinforcement aspect this increases a desired behavior and in the punishment aspect it lessens an undesirable behavior. The two types of reinforcement are positive and negative. Positive reinforcement increases a behavior by making the consequence pleasurable. This can be seen when a parent gives
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Electrical Engineering Changing the world TABLE OF CONTENTS I. Development of Railways II. Importance of technology and improvement of life III. Cellphone Telecommunication developments and progress. IV. Through Engineering Customers is created V. Job growth VI. Jobs availability for electrical engineers varies greatly. VII. Conclusion VIII. References Development of Railways Trains have developed in way that they have surpassed the preliminary staged. For example train tours
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Symbol H+ Li+ Na+ K+ Rb+ Cs+ Be2+ Mg2+ Ca2+ Sr2+ Ba2+ Ra2+ Zn2+ Symbol Cu+ Cu2+ Fe2+ Fe3+ Sn2+ Sn4+ Cr2+ Cr3+ Mn2+ Mn3+ Symbols and Charges for Monoatomic Ions Name Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem
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Atomic and Nuclear Structure of an Atom The atom has three main components the protons‚ neutrons‚ and electrons. The protons and neutrons make up the nucleus‚ while the electrons are found outside the atom’s nucleus. Each component of an atom has a charge to it. The protons have a positive charge. The electrons have a negative charge‚ and the neutrons have a neutral charge. The atoms also have a charge. For example hydrogen can be negative‚ positive or neutral. These are called ions.
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as the atom bomb or fission bomb‚ a weapon whose explosive power originates from the fission of atomic nuclei‚ a reaction in which an atomic nucleus splits in two. When the nucleus of a heavy atom‚ such as the element uranium-235‚ which is what the atom bomb is made out of‚ is split‚ a certain amount of mass disappears and an equivalent amount of energy is released. This was expressed by the equation E=mc2 (energy = mass times the speed of light squared).This is the energy that powers an atom bomb
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QUALITATIVE TESTS FOR SOME CATIONS II CHEMISTRY 11.1 OCTOBER 5 2013 QUALITATIVE TESTS FOR SOME CATIONS II I. Introduction Qualitative analysis schemes are often based on selective precipitation of different cations. By carefully selecting reagents and conditions for reactions‚ groups of ions can be separated on the basis of their reactivity and the solubility of their salts. This enables the experimenter to use simple techniques with standard laboratory equipment‚ as well as to learn
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The History of the Atom Hypothesis according to Aristotle (350 BC): All matter consists of the elements earth‚ air‚ fire‚ and water. Experiment: A tree grows from the earth as water is added. The tree is then set on fire in an effort to form new elements. 1. What kind of results would be observed from this experiment? Fire‚ ash (earth)‚ smoke (air) 2. Would these observations support or reject the hypothesis? Explain. Support. No elements have been produced that are something other than
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Atoms are the smallest entities which resemble the properties of an element and cannot be broken down into smaller parts. Molecules are formed when two or more atoms are combined. This formation can happen in a variety of ways. When two oxygen atoms join O2 is formed‚ and when three oxygen atoms join O3 or ozone is formed. Both of these have different properties. Different atoms can also combine to form molecules. Hydrogen combines with sulfur to form H2S and hydrogen and oxygen also combine
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