Formula Sheet (Including the stuff not on the real formula sheet) From Gauss’ Law Flux perpendicular r to E is equal to zero. Flux entering a surface is negative. Flux leaving a surface is positive. The flux entering a surface is the same as the flux leaving it. A Hemisphere with charge in front of flat surface: Gaussian Surfaces Exterior to a uniformly charged insulating sphere of radius “a” and total charge Q: Interior (still an insulating sphere) Interior of a uniformly charged conducting
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6. Applications * Is it possible to add heat to a body without changing its temperature? Yes. It is possible to add energy to a body (in the form of heat) and not raise its temperature by causing a phase change. When you heat ice it takes energy to convert it from ice to water‚ but does not change the temperature of the body until it is all converted. The principle behind this is what we call latent heat. It refers to the energy (or heat) required to change the state of a substance without changing
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on the rate of transpiration. They set up an experiment as shown in the diagram below. lamp air bubble Apparatus used to investigate the rate of transpiration 1.1 1.2 1.3 1.4 State a hypothesis for this investigation. Name the apparatus used in this investigation. What is the significance of the tap? Explain TWO precautions that the learners must take to ensure that the results are reliable. In the investigation on transpiration‚ measurements of the distance travelled by the air bubble
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TUBERCULOSIS Tuberculosis‚ commonly known as TB‚ is a contagious and an often severe airborne disease caused by a bacterial infection. TB typically affects the lungs‚ but it also may affect any other organ of the body. It is usually treated with a regimen of drugs taken for 6 months to 2 years‚ depending on the type of infection Tuberculosis was popularly known as consumption for a long time. Scientists know it as an infection caused by M. tuberculosis. In 1882‚ the microbiologist Robert Koch discovered
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GRAVITATION Kepler’s Laws Towards the end of the sixteenth century‚ Tycho Brahe collected a huge amount of data giving precise measurements of the position of planets. Johannes Kepler‚ after a detailed analysis of the measurements announced three laws in 1619. 1. The orbit of each planet is an ellipse which has the Sun at one of its foci. 2. Each planet moves in such a way that the (imaginary) line joining it to the Sun sweeps out equal areas in equal times. 3. The squares of the periods
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FLUID FRICTION MEASUREMENTS YEDITEPE UNIVERSITY DEPARTMENT OF MECHANICAL ENGINEERING 1 YEDITEPE UNIVERSITY ENGINEERING FACULTY MECHANICAL ENGINEERING LABORATORY Fluid Friction Measurements 1. Objective: Ø To determine the head loss. Ø To determine the head loss associated with flow of water through standard fittings used in plumbing installations. Ø To determine the relationship between friction coefficient and Reynolds’ number for flow of water through a pipe having a roughened bore
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Energetics Worksheet 1. Calculate a value for the Lattice Energy of Calcium Chloride from the following data. Draw energy cycles Std. Enthalpy of Formation of CaCl2 = - 795 kJ/ mol Std. enthalpy of atomisation of calcium = + 177 kJ/mol Std. enthalpy of atomisation of Chlorine = +121 kJ/mol 1st ionisation energy of calcium = +590 kJ/mol 2nd ionisation energy of calcium = +1100 kJ/mol Electron Affinity of chlorine = -364 kJ/mol 2. Draw Born-Haber cycles and calculate the L.E. of Cu2O and CuO
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Please refer to the text or simply ask me for help if you need more explanation of the common errors described here. Punctuation Problems When you have a series of items‚ you must use a comma before the ‘and’ or the ‘or.’ When you use ‘however’ within a sentence‚ you must have a comma on either side of the word. Or‚ you could have no commas at all. But‚ you cannot use just one comma unless ‘However’ is the first word in the sentence. Introductory subordinate clauses need a comma to set them off
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Measurement of reaction time Measurement of reaction time Aim of the experiment To record reaction times to visual cues using the iworx equipment To compare and contrast the reaction time when provided randomly vs. fixed time intervals‚ and upon repetition. Introduction Our bodies react appropriately to changes that occur in the environment during our day-to-day activities. When responding‚ an external stimulus has to be detected by one or more neurons. These then
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ATOMIC PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus‚ surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a nucleon
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