Explain why the laser beams used in inertial confinement fusion are even in number (such as 16 or 32)
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In order to keep the pellet containing the fuel at the focal point of the lasers, each
of the beams pushing the pellet in one direction is balanced by a laser beam pointing in the
other, As a result, no momentum is transferred to the pellet, while a considerable amount of
energy is (o much that the interior temperature exceeds that needed to initiate fusion.
Because the beams come in pairs, there must be an even number of them.
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Process of Science: Name a testable hypothesis from nebular theory that was proven true in observations of extrasolar planets. Does this mean the theory is complete?
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A cup that is 6.0 cm tall is in front of a concave lens. The image of the cup is 2.5 cm tall and 7.5 cm from the lens. What is the focal length of the lens?
A) -6.0 cm B) -7.5 cm C) -13 cm D) +18 cm E) +6.0 cm
At what altitude and in what direction in your sky does the north or south celestial pole appear?
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Nitrogen fixation and runoff of nitrogen applied to the soil pose problems for agricultural production and the environment. Why is this so? Explain
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