Question

I got 20.5 for this. Is that right?

Answer 1

And I got 21.5 for this one. Is this one correct?

Answer 2

And I got 14.9 for this one..Is it right?

Answer 3

And I Don't know the answer to this: You measure a piece of rope and find its length to be 13 m. Find the percent error of this measurement. Round to the nearest hundredth.

Answer 4

@ganeshie8 Can you confirm that I Got these answers right, please :)

Answer 5

@dan815

Answer 6

Your multiple choice answers are correct. Well done, but I hope you actually worked them out and not guessed. You did not show your work or justification.
Measuring a rope three times and see if you have a difference in the measurements or uncertainties. That should be the lower bound of your error. This error depends on the tool you use, and the judgment you make when measuring.

Answer 7

I didn't guess, I worked them out. I didn't think about adding the work that I did haha. But thank you for your answer.

Answer 8

No problem!