Indeterminacy Equation


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EMurphy_2L
Posts: 128
Joined: Sat Sep 07, 2019 12:16 am

Indeterminacy Equation

Postby EMurphy_2L » Mon Oct 14, 2019 3:39 pm

If the question gives you the speed of an object to be 5.00 ± 5.0 m/s, would delta-v (the uncertainty of velocity) be 10 m/s?? Because it's between 0 and 10 m/s?? What does the uncertainty mean

claribel charway 1I
Posts: 55
Joined: Wed Sep 11, 2019 12:15 am

Re: Indeterminacy Equation

Postby claribel charway 1I » Mon Oct 14, 2019 3:57 pm

The uncertainty is the range that the velocity would fall into. So in this case, it would fall between 0 and 10 m/s.

904914037
Posts: 65
Joined: Wed Sep 18, 2019 12:16 am

Re: Indeterminacy Equation

Postby 904914037 » Mon Oct 14, 2019 5:03 pm

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.

xenamclean_1G
Posts: 51
Joined: Sat Jul 20, 2019 12:15 am

Re: Indeterminacy Equation

Postby xenamclean_1G » Mon Oct 14, 2019 6:50 pm

Yes, it would be 10 because it could fall into the range 1-10.


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