GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor‚ in this case wire‚ by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor‚ i.e. it has less resistance. For example‚ gold has more free electrons than
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Fiber Length on Contraction 1. As muscle fiber length increases: Contraction Force Increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: Increases. MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable is the contraction force 2. Independent Variable is the stimulation voltage 3. Controlled Variables are the muscle fiber length‚ temperature‚ freq of stimulation. Effect of Muscle Length on
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Pisa “To what extent does the length of the string affect the period of a simple pendulum?” IBDP PHYSICS Internal Assessment – The Simple Pendulum 9 INTRODUCTION The original aim for this invesigation was to “investigate the simple pendulum”. There are many variables one could look into‚ such as displacement‚ angle‚ damping‚ mass of the bob etc. The most interesting variable‚ however‚ is the length of the swinging pendulum. The relationship between the length and the time for one swing (the
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Chapter 5 Information Theory and Coding In communication systems‚ information theory‚ pioneered by C. E. Shannon‚ generally deals with mathematical formulation of the information transfer from one place to another. It is concerned with source coding and channel coding. Source coding attempts to minimize the number of bits required to represent the source output at a given level of efficiency. Channel coding‚ on the other hand‚ is used so that information can be transmitted through the channel with
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How‚ When to Use a String A String is a variable length data type which is used to store any length of data. Variable length fields are used because they save space. Example: Raj is 3 characters long‚ Vemuri Rajgopal is 14 character long. With fixed-length fields‚ you need to define each field to be long enough to hold the longest name. This would waste space for records that had short names. In variable length fields it stores the exact length of the string. • String‚ can store any number
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Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases contraction force increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: increases. Materials and Methods Measurement of Threshold Stimulus 1. Dependent Variable contraction force 2. Independent Variable stimulation voltage 3. Controlled Variables muscle fiber length; frequency of stimulation; temperature Effect of Muscle Length on Contraction 1
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_________ 5(m Fig. 1.2.1 Diagram showing the general structure Of an animal cell as seen under the electron microscope 1. Calculate the magnification factor 2. Calculate the length of structure G 3. Calculate the diameter of the nucleolus 4. Calculate the diameter of the nucleus 5. Calculate the diameter of the cell at its widest point The diagram below shows a plant cell [pic] ___________
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mathematical relationship that exists between these variables. Hypothesis Copper wires would be a better conductor than nichrome wires because it would yield less resistance when they have same cross-sectional area‚ length and temperature. Resistance would be increased when length wires increased. Resistance would be increased when cross-sectional area of wires decreased. Resistivity of wires is a factor of affecting the resistance. Background information Electrical resistance Electrical resistance
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researcher focused on the string length and weight modifications. Due to the concepts presented‚ the researcher aims to examine how the string length and weight can affect
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path. According to pierce “crimp”‚ geometrically considered is the percentage excess of length of the yarn axis over the cloth length. Crimp%: Crimp percentage is defined as the mean difference between the straightened thread length and the distance between the ends of the thread while in cloth which is expressed as a percentage. Mathematically‚ Crimp % Where‚ l= Length of yarn before weaving P= Length or extent of yarn in fabric after weaving Crimp amplitude: In cloth geometry‚ the term
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