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Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
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Physics, 22.06.2019 18:30
Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.
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Physics, 22.06.2019 22:30
Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?
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Physics, 23.06.2019 01:00
Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
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History, 29.06.2019 12:50
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Mathematics, 29.06.2019 13:00
Biology, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
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Physics, 29.06.2019 13:00