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What information about an astronomical object can be determined by observing its spectrum?
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Simple machines can a. increase force only b. decrease force only c. increase or decrease force
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What ia the energy of an object because of its potential and kinetic energies
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An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?
Answers: 2
What information about an astronomical object can be determined by observing its spectrum?...
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