EXERCISE Question 1 a) Two point of charges of opposite sign and same magnitude 3.5 μC are separated by a distance of 5 cm. Find (i) the magnitude and direction of the electric field strength‚ E at the midpoint between the charges. (ii) the magnitude and direction of the force F on an electron placed at the midpoint. Answer: i) E net = 1.008x108 N/C toward the –ve charge ii) F net = 1.6128x10-11 N toward +ve charge
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Anti Collision Pad for Vehicles Objective: To be able to use the concept of electromagnetic repulsion in avoiding road accidents. Problem: Is electromagnetic force of repulsion enough to avoid impacts.? Introduction: Maglev Train‚ a train that uses the repulsion of like charges within its railings in order for it to levitate and move‚ was the inspiration of this project. The team thought of some ways to use the concept and build something useful. Until‚ the group thought of some serious road
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5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. To demonstrate the effect of angle of launch on range of a projectile. To demonstrate that the moment of inertia of a rod changes with the change of position of a pair of equal weights attached to the rod. To study variation of volume of a gas with its pressure at constant temperature using a doctors’ syringe. To demonstrate Bernoulli’s theorem with simple illustrations To demonstrate that heat capacities of equal masses of different materials are different
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HW 1 solutions Point Charge in One Dimension A point charge q1 = -3.5 μC is located at the origin of a co-ordinate system. Another point charge q2 = 5.1 μC is located along the x-axis at a distance x2 = 9.3 cm from q1. 1) What is F12‚x‚ the value of the x-component of the force that q1 exerts on q2? -18.57 N For all of these problems we want to make use of the standard electric force equation: ̂ So for this problem with K=9*109 Nm2/C2‚ Q1=-3.5μC‚ Q2=5.1 μC‚ and r=9.3 cm we get F=-18.57
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1. Which of the following statements about magnetic fields is not true? | Magnetic Flux is a vector. | | Changing magnetic fields create electric fields. | | Changing electric fields create magnetic fields. | | The magnetic field cannot do work on a moving charge. | | The magnetic force on a moving charge can be zero. | 2. If you double the current through an inductor‚ the energy stored in the associated magnetic field increases by a factor of _____. | Two - wrong |
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PHOTOGRAPHY The word photography derives from the Greek phōtos means "light" and graphos means "drawing"‚ together meaning "drawing with light". Photography is the art‚ science‚ and practice of creating durable images by recording light or other electromagnetic radiation‚ either chemically by means of a light-sensitive material or electronically by means of an image sensor. Photography has many uses for business‚ science‚ manufacturing‚ art‚ recreational purposes‚ and mass communication. Modern
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ENERGY: Energy is the amount of force or power when applied can move one object from one position to another or Energy defines the capacity of a system to do work. Energy exists in everybody whether they are human beings or animals or non-living things for e.g.: Jet‚ Light‚ Machines etc... Energy can have many forms: kinetic‚ potential‚ light‚ sound‚ gravitational‚ elastic‚ electromagnetic or nuclear. The many different natural and renewable energy technologies are by no means breakthrough. Many
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Mie resonances in dielectric particles can increase the local optical density of states (LDOS) associated with either electric or magnetic transition rates in nearby quantum emitters without ohmic losses. Their rather large quality factors compensate their low field confinement as compared to the plasmon resonances of metallic nanostructures for which nonradiative decay channels dominate. We show theoretically that near-infrared quadrupolar magnetic resonances in silicon particles can preferentially
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INTRODUCTION Electromagnetic clutches operate electrically‚ but transmit torque mechanically. This is why they used to be referred to as electromechanical clutches. Over the years EM became known as electromagnetic versus electro mechanical‚ referring more about their actuation method versus physical operation. Since the clutches started becoming popular over sixty years ago‚ the variety of applications and clutch designs has increased dramatically
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An experiment to investigate the factors which affect Resistance in a wire What is resistance? A potential difference (V) applied across a wire of length (l)‚ there is in the conductor‚ an electric field (E). In this electric field the free electrons are not however under continuous acceleration (Ee/m). This is because they repeatedly collide with the moderately massive vibrating atoms losing their kinetic energy. The vibrating atoms having gained this kinetic energy now vibrate more. The resulting
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