Physics 8-13-13 Measuring in Physics, continued…

PHYSICS: Did you remember sig figs? All this SI and calculations stuff will come back to you before you know it. Holler if we need to practice at a help session.

When you multiply or divide, the number in the problem with the fewest sig figs determines the number of sig figs in the answer. When you add/subtract, the number in the problem with the lowest decimal value determines the place of the last sig fig in the answer. And remember, you never go by counting numbers or conversion factors.Don’t forget to show all your work!

Now, let’s see you put it all together in the lab tomorrow! 🙂

UPDATE – The textbooks website was down last time I checked, so I’ll move the homework to Thursday.

PHYSICS 8-13-13 Measurements in Physics, Pt. 2 from Tammy Skinner on Vimeo.

flickr photo by jambe

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28 thoughts on “Physics 8-13-13 Measuring in Physics, continued…

  1. On simple problems that are simply to prove our understanding of Sig Figs, do we need to show all of the work, or do we still need to write out everything?

    Ex. Number 20 on page 28

  2. Do we need to have the density lab written up by tomorrow? If yes, i dont have my lab book so can i write it on a piece of paper and transfer my work later?

  3. So, lets try and come up with a general plan! I think ms. Skinner has dropped several hints (;
    Anyways, any ideas?

  4. Upon reflection, I’m actually pretty happy that we reviewed sigfigs…I’m a little rusty on the rounding rules. yeah

  5. So what is the objective for tomorrow? apparently i missed that because I can’t really think of a procedure when I don’t know the objective?

  6. Hey everybody,
    I don’t know if I missed something, but I need the data for the Human Density Lab. I have a picture of the data that Evan collected (Link Below), but I don’t think that we ever decided on the mass of Carly and Hudson. I can do conversions later and post them below unless that is someone else’s job.



    • Someone told me that we had the mass of Hudson. I don’t know what it was though.

      But we can’t finish the lab report without this. (I don’t know how accurate it will be now that we waited a week.)

      • Also, when you are explaining possible errors in the process, note that my mass fluctuates daily. Since we measured it today, it may have been different the day of.

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