A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 4 years ago

A pipe is measured once with a steel tape with markings every .1mm.The two ends of the pipe line up with the 0 and 40-m marks onthe tape. How should this datum be recorded using theappropriate number of significant figures?

  • This Question is Closed
  1. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well bet cause the smallest division is .1mm you would divide that by 2 so you would get + or - .05mm so I'm almost positive it should be to 40.00 and 0.00

  2. mathmate
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That is correct, i.e. 40\(\pm\) 0.00005 m, assuming the operator has excellent eye-sight. Do note that a temperature deviation of 1 degree changes by about 0.00044 m over the 40m. length. Also, all tapes have rated tensions when measuring. Any deviation of 1 kg force on the tension can lead easily to an error of 0.00050m over the 40 m. length. (if tape is made of steel. If it is nylon, the error is MUCH higher). Therefore the given measurement has to be taken under extremely controlled conditions to get the calculated accuracy. ALternatively, environmental errors have to be corrected. They are 10-100 times greater than the graduation error.

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.