Energy density of a vibrating solid (8 points) the density of kinetic energy at a given point in a vibrating solid where m is the mass of a single atom and a is the bond length. the density of potential energy is ()', where is the spring constant of a bond. (a) for some reason, somebody decides to write a wave as u = a sin(kx-wi) instead of in complex exponential form. tell me for which positions/times the potential energy density is larger than the kinetic energy density. it might to remember that the speed of sound is a c/m. (b) now somebody produces a wave of the form u(xt) = a sin kr sinwt. are the kinetic and potential energy always in phase or not? explain.
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Astudent is working in a lab to determine how time affects impulse. the student keeps the force the same in each trial but changes the impact time. some data is shown.
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Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate
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How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
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Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?
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Energy density of a vibrating solid (8 points) the density of kinetic energy at a given point in a v...
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