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This 2 page Study Guide was uploaded by ntombizodwa makuyana on Sunday September 11, 2016. The Study Guide belongs to PHY 111 at Arizona State University taught by Prof Tsen in Fall 2016. Since its upload, it has received 6 views. For similar materials see General Physics in PHYSICS (PHY) at Arizona State University.
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Date Created: 09/11/16
Introduction to physics General definitions meter- distance travelled by light in a vacuum during the time interval of 1/299792458 seconds Mass- kilogram is defined as the mass of a specific platinum-iridium alloy cylinder kept at International Burea of weights and Measures at Sevres, France Second – 9192631700 times the period of the oscillation of radiation from cesium atom. Building block of all matter- atom Atom is composed of protons (+ charged), neutrons(0) and electrons(- charged) P(+) P(), N(0) Some Some prefixes for powers of ten (e means 10^) power prefix abbreviation e-15 Femto F e-12 Pico P e-9 Nano n e-6 Micro µ e-3 Milli m e-2 centi c e+3 Kilo k e+6 Mega M e+9 Giga G e+12 tera T Uncertainities When two numbers are multiplying or dividing, the numbers of significant figures in the product should equal the lowest number of significant figures of the factors Eg 24.3*11= 267.3 but the correct answer in this case is 270 because 11 has the lowest number of sig figures When adding or subtracking numbers, the number of decimal places in the result should be the same as the smallest number of decimal places of any term in the sum or difference Eg 123.44+3.5=126.94 but the correct answer is 126.9 because 3.5 has the lowest number of decimal places Solving techniques
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