Physics, 04.10.2019 21:30 123martinnnnn
Neutrons have a proper half-life of 610 seconds. it has been theorized that extremely energetic neutrons could be produced by collisions of ultra-energetic protons (accelerated by an unknown mechanism) with nuclei. for a collection of neutrons to reach earth with 50% surviving, how close to the speed of light must their velocity be (i. e., what is c-vin m/s) if they are created near sagittarius a (black hole at the center of our galaxy), 25,000 light-years distant? hint: the yfac- tor is extremely large so use an approximation of b for large y.
Answers: 2
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What is created when solids,liquids,an gases mix with one another
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Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.
Answers: 2
Physics, 22.06.2019 21:20
The strong nuclear force acts over a small distance than the electrostatic force. true or false
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Neutrons have a proper half-life of 610 seconds. it has been theorized that extremely energetic neut...
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