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About an hour About a day About a week About a month About forever

0 of 250. 30. You have a piano, and you ask for the best piano tuner EVER. You ask her to tune the piano perfectly. She says “No problem, it will only take”. About an hour About a day About a week About a month About forever. 0 of 250. 30.

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About an hour About a day About a week About a month About forever

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  1. 0 of 250 30 You have a piano, and you ask for the best piano tuner EVER. You ask her to tune the piano perfectly. She says “No problem, it will only take”... • About an hour • About a day • About a week • About a month • About forever

  2. 0 of 250 30 The speed of a photon in vacuum is known precisely in all circumstances. It follows from the uncertainty principle that nothing can be known about the photon’s postion. • True • False • False, but because the speed is not really known precisely

  3. 0 of 250 30 A free electron moves along the x-axis, and has a localized wave function. The uncertainty in its momentum is decreased if: • The wave function is made more narrow • The wave function is made less narrow • Wave function is unchanged, but its energy is increased • Wave function is unchanged, but its energy is decreased • None of the above

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