Work Energy and Emf

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Work  Energy  and Emf shows an emf device (consider it to be a battery) that is part of a simple circuit containing a single resistance R (the symbol for resistance and a resistor is JoNor). The emf device keeps one of its terminals (called the positive terminal and  ften labeled +) at a higher electric potential than […]

Acceleration

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Acceleration 14E. Sketch a graph that is a possible description of position as a function of time for a particle that moves along the x axis and. at   = 1 s, has (a) zero velocity and positive acceleration; (b) zero velocity and negative acceleration; (c) negative velocity and positive acceleration: (d) negative velocity .and negative acceleration. (e) For which […]

Electric Potential

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Electric Potential An electron in the atmosphere is moved upward through displacement d by an electrostatic force due to an electric field W done on the electron by the electric field (tlU = – W) gives the relation. A second Key Idea is that the work done by a constant force F on a particle undergoing a displacement d […]

Applying Gauss’ Law: Spherical Symmetry

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Applying Gauss’ Law: Spherical Symmetry A point charge causes an electric flux of -750 N . m2/C to pass through a spherical Gaussian surface of 10.0 cm radius centered on the charge. (a) If the radius of the Gaussian surface were doubled how much flux would pass through the surface? (b) What is the value of the point charge 35E. […]

Nuclear Fission The Basic Process

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Nuclear Fission The Basic Process In 1932 English physicist lames Chadwick~~ discovered the neutron. A few years I~ Enrico Fermi in Rome found hat when various elements are bombarded by neutrons, new radioactive elements are produced. Fermi had predicted that.the neulrOll, being , w~ be a useful nuclear projectile; unlike the proton or the alpha par. ticle, it […]

flux of an Electric Field

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flux of an Electric Field To define the flux of an electric field consider  which shows an arbitrary (asymmetric) Gaussian surface immersed in a nonuniform electric field let  us divide the surface into small squares of area each square being small enough to permit us to neglect any curvature and to consider the individual square to be […]

Flux

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Flux Suppose that as in  you aim a wide air stream of uniform velocity small square loop of area A Let  represent the volume ate (volume per unit time) at which air flows through the loop This rate depends on the angle between  and the plane of the loop If  is perpendicular to the plane the rate  is equal to […]

Forced Oscillations and Resonance

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Forced Oscillations and Resonance A person swinging in a swing without anyone pushing it is an example of  oscillation. However if someone pushes the swing periodically the swing forced or driven oscillations Two angular frequencies are associated with a system undergoing driven osciIlations (I) the natural angular frequency w of the system which is the angular frequency […]