Solving with Heisenberg


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rachelle1K
Posts: 86
Joined: Sat Sep 07, 2019 12:16 am

Solving with Heisenberg

Postby rachelle1K » Tue Nov 05, 2019 8:11 pm

Why do we sometimes multiply by an integer?

For example, in the Dino nuggets problem, it states that "Lyndon gets so angry at Matt's mistake that he yeets a rock at him that weighs 2.8g with a whopping speed of 373.23 .34 m/s. What is the indeterminancy of position of the rock?"

In the example, they multiplied .34 by 2 to get .
Last edited by rachelle1K on Tue Nov 05, 2019 8:49 pm, edited 1 time in total.

Deepika Reddy 1A
Posts: 103
Joined: Thu Jul 11, 2019 12:15 am

Re: Solving with Heisenber

Postby Deepika Reddy 1A » Tue Nov 05, 2019 8:20 pm

This is because when they use the + or - , you should use the range. You do this by multiplying the value by two so that you get the range and can substitute that into the equation.

Katie Kyan 2K
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Re: Solving with Heisenber

Postby Katie Kyan 2K » Tue Nov 05, 2019 8:26 pm

When the problem gives you the uncertainty in the + or - form, you have to multiply that value by two because it gives you the range of uncertainty. In the Dino nuggets problem since the uncertainty was + or - 0.34 m/s, the range of values the velocity can take on is (373.23+0.34) - (373.23-0.34) = 0.68m/s. Therefore you substitute 0.68 m/s as the uncertainty for velocity.

805317518
Posts: 35
Joined: Wed Sep 11, 2019 12:16 am

Re: Solving with Heisenberg

Postby 805317518 » Tue Nov 05, 2019 9:52 pm

I have a follow-up question. How do you apply Δv into the equation? In other words, what is Δv in terms of Δp?

Victor James 4I
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Joined: Wed Sep 18, 2019 12:20 am

Re: Solving with Heisenberg

Postby Victor James 4I » Tue Nov 05, 2019 10:59 pm

805317518 wrote:I have a follow-up question. How do you apply Δv into the equation? In other words, what is Δv in terms of Δp?


p = mv so Δp = mΔv since mass is constant


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