Liquid Film Motors [pic] Fiona McLaughlin Zoe Cheng Loreto College Coleraine Comments Abstract We have carried out an experimental and theoretical study of liquid film motors. This phenomenon was first reported in 2009. Two papers have been published on arXiv.com‚ the first describing the phenomenon (Shiryaeva et al)‚ the second offering a theoretical model for the observations (Amjadi et al). The
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1. (a)Correct the following statements. (i) The melting points of crystalline and amorphous solids are not definite. The melting point of an amorphous solid is not definite. OR The melting point of a crystalline solid is definite. P Ps X solute . Ps P Ps The equation for relative lowering of vapour pressure when solute remains normal is X solute P (iii)The degree of ionization decreases with dilution. The degree of ionisation increases with dilution. (iv) Tertiary butyl halide
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) Data Booklet 9701/11 May/June 2012 1 hour *6083199800* READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and
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Electromotive Force Projectile Accelerator Proposal Why build an Electromotive Force Projectile Accelerator (EFPA)? Electromotive Force Projectile Accelerators have the ability to accelerate without using any sort of propellant. In addition‚ EFPA’s can be built with no moving parts‚ an attribute that makes them highly reliable and silent instruments. The basic EFPA uses a voltage source and a combination of circuitry to accelerate an object to a desired speed. This is what makes EFPA a fairly
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Tin container testing Following are the different tests that are performed: 1) Temper Test: Standard: IS 1993- 1982 Take the sample strip of 90mm width. Carry out the ‘zero setting’ on Erichsen Testing machine. After zero setting‚ clamp the dial by tightening the screw. Insert the sample strip in machine and lock it by test piece holder. Confirm the light arrangement and the mirror is placed on its respective position. Switch on the lamp. Rotate the back screw at uniform speed‚ so that
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Construction Digital Voltmeter Raj K. Gorkhali A voltmeter finds its importance wherever voltage is to be measured. Here we present an easyto-build and accurate digital voltmeter that has been designed as a panel meter and can be used in DC power supplies panels or where it is necessary to have an accurate indication of the voltage. Circuit description The circuit uses an analogue-todigital converter ICL7107 made by INTERSIL. Fig. 1 shows the pin detail of IC L7107. This IC incorporates in
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investigated the HYPERLINK "http://en.wikipedia.org/wiki/Clathrate_hydrate" \o "Clathrate hydrate" clathrate hydrate of chlorine‚ invented an early form of theBunsen burner and the system of oxidation numbers‚ and popularised terminology such as anode‚ cathode‚ electrode‚ andion. Faraday ultimately became the first and foremost HYPERLINK "http://en.wikipedia.org/wiki/Fullerian_Professor_of_Chemistry" \o "Fullerian Professor of Chemistry" Fullerian Professor of Chemistry at the Royal Institution
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Methods of study The laboratory study has tow division; the first one is for examining the characteristics of studied alabaster and the weathering process acting on alabaster used in Luxor and Karnak temples. The second division in this work is to examine and evaluate four co-polymer resins selected as stone surface consolidating for the weathered alabaster. Various alabaster samples have been collected from Wadi Sannur quarry and Wadi Assiuty quarry. Archaeological samples were taken from the statues
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i. Counter 5 ii. PIC 16F877A 5 iii. 4 MHz Crystal Oscillator 7 iv. Light Dependent Resistors 7 v. LM7805C 7 vi. HD744LS40P 8 vii. HD744LS48P 8 viii. 7-segment anode 9 V. Chapter 3: Materials and Methodology 10 i. Materials 10 ii. Procedures 10 iii. Program 11 iv. Circuit Diagram 15 v. Flowchart 18 VI. Chapter 4: Results and Discussion
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by a pulse fed at its gate. In all these circuits‚ the thyristor is connected in series with load to a dc supply‚ or a positive (forward) voltage is applied between anode and cathode terminals. The thyristor turns off‚ when the current decreases below the holding current‚ or a reverse (negative) voltage is applied between anode and cathode terminals. So‚ a thyristor is to be force-commutated‚ for which additional circuit is to be used‚ where another thyristor is often used. Later‚
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