of magnetic field Effect of electric Field Alpha Particles: Alpha particles are composed of two protons and two neutrons and have the same nucleus as Helium. It is a very stable particle. Large nuclei such as Americium-241 emit alpha particles. As it emits alpha particles its mass and atomic number decrease‚ so it changes into a different element. Alpha particles are good ionizers because of their double positive charge‚ large mass and because they are relatively
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Advanced Placement Program AP® Physics B Practice Exam The questions contained in this AP® Physics B Practice Exam are written to the content specifications of AP Exams for this subject. Taking this practice exam should provide students with an idea of their general areas of strengths and weaknesses in preparing for the actual AP Exam. Because this AP Physics B Practice Exam has never been administered as an operational AP Exam‚ statistical data are not available for calculating potential
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– Electrostatics) [ANSWERS] FV force between the charges in vaccuum = FM force between two charges in medium FV ⇒ Fm = k ⇒ if k increases‚ Fm decreases. Ans 01. Since K= Ans 02. Suppose rod P be negatively charged since it attracts rod R ⇒ R is positively charged since it repels rod Q ⇒ Q is negatively charged. So force between Q and R is attractive in nature. Ans 03. Since F = q E and a = F/m Since charge on proton and electron are same but mass for electron is
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the electron. Thomson was experimenting with electric discharges in electric discharge tubes when he found that it would glow when a high voltage was applied in a gas volume at low pressure‚ while it was known that the glow in the gas was something to do with the cathode and the negative pole of the high voltage‚ Thomson continued with his experiments with the rays coming from the cathode and he found that the rays where deflected by magnetic and electric fields‚ they were electrically charged. So
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Olivares‚ and Karol Giuseppe A. Jubilo National Institute of Physics‚ University of the Philippines‚ Diliman‚ Quezon City Abstract This experiment is designed to further the understanding of the relationship between voltage‚ charge‚ and capacitance of capacitors. This also explains how values of effective capacitance for series and parallel combinations of capacitors are obtained using effective equations. Accurate observations and results from devices such as the Labquest with
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| Resistance and Electric Circuits | Lab 5 | | | The goal of the “Resistance and Electric Circuit” Lab was to determine the resistivity of a conducting wire given two known resistors. The main property of resistivity is that it represents how easily electrons can flow through a material. A Galvanometer is used to measure the current of the circuit and the Wheatstone Bridge is used to measure the resistances and determine the unknown resistance. This experiment also relates Ohm’s Law
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Make a Carrot Battery This activity uses a common carrot and two different metals to make a enough electricity to run a small digital clock. Materials: Two Large Raw Carrots; 2 Pennies; 2 Large Galvanized Nails; 3 pieces of 6" long wire; Small Digital Clock (Tandy (Radio Shack) or Maplin - "Stick-on Timer" £3.50/ $4.99. The digital clock can be extracted from an inexpensive alarm clock or it can be purchased from an electronics store. Slice of about 1 inch from each carrot and discard. Place
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In this part of Lesson 4‚ we will ponder two questions: * What is the cause and mechanism associated with lightning strikes? * How do lightning rods serve to protect buildings from the devastating affects of a lightning strike? Static Charge Buildup in the Clouds The scientific community has long pondered the cause of lightning strikes. Even today‚ it is the subject of a good deal of scientific research and theorizing. The details of how a cloud becomes statically charged are not completely
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Thunderstorms Kyle Cowan Known as the electric storm‚ thunderstorms occur all the time. When a thunderstorm starts to occur‚ the air starts to cool as it rises. Cumulus clouds start to form as water vapor starts to condense. As condensation occurs‚ heat (latent heat/energy)‚ starts to release from the atmosphere and assists the thunderstorm in becoming created and grow. Soon as the thunderstorm is formed‚ condensation high in the cloud (now in the form of water droplets or ice) starts
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Electricity was first researched by Thales of Miletos around 600BC. He conducted a few experiments on static electricity in which he believed that friction made amber become magnetized. Other than the fact that people knew that eels produced electric shocks‚ electricity was little more than an intellectual curiosity for over 2000 years. Until 1600 when someone from England discovered the lodestone effect when amber with static would attract small objects towards it. In the 18th century‚ Benjamin
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