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Yes, delta v would be 10. Indeterminacy means that, when dealing with small objects like atoms, the process of measurement can influence the data results. Like the example Professor gave in class, if a human walks through two beams of photons that are a specific distance apart, we could find data such as the human's velocity with relative confidence because since a human's mass is much greater than that of the photon beam's the human's path would not be altered. But if an electron passed through the beams, its course would likely be altered when it comes into contact with the beam because they have similar masses. So there exists a level of indeterminacy in the exact pathway (and therefore the time that passed) for the electron to pass through both beams, and as a result, the electron's calculated velocity may not be completely accurate. So how we measure one quality of an object may affect its other qualities. For instance, the more we know about the speed of an object the less we know about its position and vice versa.
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