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Tag Archives: Conductivity

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Superconductivity: Theory & Uses

ScienceBy William Anderson (Schoolworkhelper Editorial Team)June 7, 2011Leave a comment

Conductivity is the ability of a substance to carry electricity. Some substances like copper, aluminum, silver and gold do it very well. They are called conductors. Others conduct electricity partially and they are called semi-conductors. The concept of electric transmission is very simple to understand. The wire that conducts the electric current is made of…

Capacitance & Resistance

ScienceBy William Anderson (Schoolworkhelper Editorial Team)April 23, 2011Leave a comment

Capacitor: two conducting plates charged with equal amount of charge of opposite signs, with insulator in between (we assume a vacuum unless said otherwise) Three quantities characterize a capacitor: 1) surface charge density 2) capacitance 3) dielectric constant Capacitance (q= C x ∆V) Unit: Farad (F) The potential difference across a parallel plate capacitor is…

Lab Exercise 6.1.1: Determining the Rate of Reaction

ScienceBy William Anderson (Schoolworkhelper Editorial Team)May 14, 20107 Comments

e) The reaction proceeds quite rapidly during the initiate mixture of Hydrochloric acid and Calcium Carbonate chips. Between 1-3 min the reaction is proceeding vigorously, however later on between 4-6 min the reaction tampers off and the consumption in HCl lowers per min intervals. Evaluation f) The experimental design appears to be very vague on…

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