## 7th edition 1B.27 [ENDORSED]

$\Delta p \Delta x\geq \frac{h}{4\pi }$

Henri_de_Guzman_3L
Posts: 88
Joined: Fri Sep 28, 2018 12:25 am

### 7th edition 1B.27

This question gives the velocity of the bowling ball to be 5.00 +/- (plus or minus) 5.0 m/s. I plugged 5.0 m/s into the uncertainty formula and got the right answer. My question is why? The total uncertainty would be 10.0 m/s correct? This doesn't give me the correct answer though.

Andie Jian 1D
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### Re: 7th edition 1B.27  [ENDORSED]

You're totally right in that the uncertainty of velocity should be 10m/s. The textbook and solution manual made a mistake. You can see the error addressed in the "Solution Manual Errors in the 6th Edition" link Dr. Lavelle has on his site (it is not listed on the 7th edition errors link, but you can see it is the same problem).

Henri_de_Guzman_3L
Posts: 88
Joined: Fri Sep 28, 2018 12:25 am

### Re: 7th edition 1B.27

I was right all along then! Haha thank you so much

Chem_Mod
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### Re: 7th edition 1B.27

I have added this to the 7th edition list of errors.