DATE: September 2013 1. Define the following terms: mass number‚ atomic number and the atomic mass unit (amu). 2. With the help of The Periodic Table‚ complete the table below. Symbol Atomic # Proton # Neutron # # of Electrons Mass Number Charge Ar 19 31 17 18 35 20 18 3+ 40 3. In your own words‚ explain Thomson’s and Rutherford’s contribution to the atomic theory. Give sketches to substantiate your answer. 4. Explain how Bohr contributed in defining the structure of the atom. 5. Magnetic
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Part 1 * The pattern is a loop pattern * Thick edge ending * Dot * Ridge ending * Bifurcation * Bifurcation * The enclosed area is a scar * Ridge ending * Short ridge * Crease * Ridge ending * Bifurcation * The enclosed ridge event is a short ridge * Ridge ending * The enclosed ridge event is a spur * Island ridge * Pores * Ridge ending * Bifurcation * Ridge ending ("Fingerprint analysis-The Basics”) Part 2 The skin
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I realized that I am constantly finding myself just reading the first few lines of a news story‚ yet getting enough information so that I can discuss it with others. If I had a chance to redo this assignment‚ there is not much I would change. The one thing I would change would be to remove the part where I wrote “(pictured above)”‚ since
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In measuring substances in the lab‚ reporting data‚ and performing calculations‚ it is both crucial important to be as precise and accurate as possible and also not to report false data. The rules of significant figures (digits in a measurement that reflect the measurement’s accuracy) allow us to have a methodical means of ensuring that the data and calculations we report reflect the accuracy that the equipment or data provide. To follow the guidelines for the correct number of significant figures
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Sample Questions 1. In the chemical formula for ammonia‚ NH3‚ what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers? (a) atomic
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Testing a design different than that of the current AEV allowed the group to detect slight flaws in their current AEV and edit the final design in order to eliminate them. To complete Lab 8‚ Group D made minor changes in the final design of the AEV. Identical code was created for both the final AEV design and the altered design to make sure that the final design was truly the best it could be. Alterations made by Group D included moving
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Cancer Assignment: Part A 1. Cancer is a group of diseases in which cells grows and divide out of control‚ it is caused by a change in DNA that controls the cell cycle. This DNA change causes for cells not to stay in interphase for the normal amount of time‚ and some of the checkpoints fail and cause the cells to divide uncontrollably. The uncontrollable division rate can create a massive group of cells called a tumour. The cells of the tumour may stay together and have no other effect on the tissues
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MESEGENA YSIENI ECE102 WEEK 3‚ Monday‚ Sep-15-2014-session LAB 1 Due date: Sep-22‚ 2014 1. Problem Statement: How many ping pong balls will be able to fit in T1-112 class room? 2. Assumptions: The ping pong balls are not going to stack on top of one another in a perfect manner. The furniture and computers in the room are insignificant. The ping pong balls stack on top of one another with no space between them. The ping pong balls stack on top of one another in a three dimensional mode
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fdsgdsfgdsfgsdgdsgsdfEssay 1.(a) State experimental evidences for i) strong repulsive force ii) strong attractive force between atoms in a solid. (b) A simple model for the oxygen molecule consists of two equal masses connected by a light spring . The atoms oscillate along their lines of centre while the midpoint of the spring remains fixed. i) Write down an expression for the frequency of oscillation of one oxygen atom in terms of its mass m and the force constant K of
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CHAPTER 4 Objectives: 1. Define consciousness.--------- 2. Appreciate the role of the circadian rhythm. 3. Describe the stages (5) of sleep including the sequence of the stages. The development of the electroencephalograph led to dramatic increases in what is known about sleep. When electrodes are attached to the face and scalp of sleepers‚ different patterns are produced on the graphic record called the electroencephalogram or EEG. The patterns vary in frequency and amplitude of the waves
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