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Physics, 22.06.2019 05:00
At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2iβ4jβ2k. find an equation for the position vector of the particle.
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Physics, 22.06.2019 12:30
Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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Physics, 22.06.2019 22:50
What is an electric motor? explain its operation. 2-3 sentence
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Physics, 23.06.2019 09:50
Make a drawing of the electric field lines around a positive charge, then make a second drawing of the electric field lines around a negative charge.
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What form of energy is being used when fireworks make small explosions in the sky?
Electrical energ...
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