Physics HSC Notes Space 1. Earth has a gravitational field that exerts a force on objects both on it and around it. K1 Define weight as the force on an object due to a gravitational field. Mass is the amount of matter within an object‚ measured in kg Weight is the force of gravity acting on an object’s mass measured in newtons (N). Weight is a force thus a vector quantity. K2 Explain that a change in gravitational potential
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frequency. 3. * An object orbits in a circular motion 12.51 times in 10.41 seconds. What is the frequency of this motion? Tangential Speed (v or vs) – average speed; rotational speed; speed of any particle in uniform circular motion; standard unit is meters per second (m/s); v = Cf = C/T = 2πrf = 2πr/T = rω Sample Problems: 3. What is the rotational speed of a person standing at the earth’s equator given that its radius is 6.38*106 m and that it takes 365 days for the earth to complete a revolution
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A SEMINAR REPORT ON UNDERWATER ACOUSTIC COMMUNICATION CHANNEL [pic] Submitted By SOWMYA.G.S 1DS06TE099 [pic] Bachelor of Engineering (B.E.) In
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0.034 kg = 0.163356 s . 50.3 N/m Explanation: Let : m = 51 g = 0.051 kg ‚ k = 14.4 N/m ‚ and A = 27.2 cm = 0.272 m . emmanuel (ae8272) – hw07-Waves and vibrations – dickerson – (28763) directed toward the equilibrium position. The speed is v= = 2 k 2 (A − x2 ) m 14.4 N/m [(0.272 m)2 − (0.136 m)2 ] 0.051
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concerns about these dating methods were exactly the same that creationists continue to raise - presence of the daughter element at the time the rock was formed and possible loss / gain of either the parent or daughter element at some point in the history of the rock. For this reason‚ the tests were designed to account for those possibilities. The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material
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menCase Study - Ancient Human Remains Weerdinge Men - Assessment - Links - Oral Presentations - Anna- | John and Darby | | The intestines of Darby | | Darby ’s Hair | Weerdinge Men When‚ where‚ how was the body found? The bodies of the two men were found in Drenthe‚ Netherlands in the southern part of Bourtanger Moor in 1904. By a peatcutter named Hilbrand Gringhuis. | Weerdinge Men are Number 7 | What do they look like today? Well‚ they look very dead
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...............................................page 1 What is radiometric dating? ............................................page 2 Theory on which it is based..............................................page 2 How does radiometric dating work.................................page 3 How accurate is it..............................................................page 4 Problems and shortcomings of radiometric dating.........page 5 Conclusion.................................................
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performed after other manufacturing processes‚ such as casting‚ forging‚ and bar drawing Disadvantages: Wasteful of material and time consuming Prof. S.K. Choudhury‚ Mechanical Engineering Department‚ IIT Kanpur 2 Basic Machining Parameters Speed (V) [m/min] • Relates velocity of the cutting tool to the work piece (Primary motion). Feed (f) [mm/rev] • Movement (advancement) of the tool per revolution of the workpiece Depth of Cut (d) [mm] • Distance the tool has plunged into the surface
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------------------------------------------------- Teen Dating Violence Unhealthy relationships can start early and last a lifetime. Dating violence often starts with teasing and name calling. These behaviors are often thought to be a “normal” part of a relationship. But these behaviors can lead to more serious violence like physical assault and rape. What is dating violence? Teen dating violence [PDF 292KB] is defined as the physical‚ sexual‚ or psychological/emotional violence within a dating relationship. You may
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Hope A. Shelby Shelby 1 Soc 290 Professor Doyle 5 November 2012 Racial patterns in Dating and Marriage Just four decades ago On June 13‚ 1967‚ President Johnson nominated a then United states Solicitor General Thurgood Marshall to be the first African American named to U.S. Supreme Court. Although‚ a mere months earlier Thurgood suffered an indignity that today seems not just outrageous but almost incomprehensible. He and his wife had found their dream house in a Virginia suburb
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