A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
please88
 one year ago
I know the answer! but doubts with the sign!!! A pool is filled to a depth of 2.0 m. How deep does the pool appear to be from above the water? is 1.5 (negative or positive?)
please88
 one year ago
I know the answer! but doubts with the sign!!! A pool is filled to a depth of 2.0 m. How deep does the pool appear to be from above the water? is 1.5 (negative or positive?)

This Question is Closed

Isaiah.Feynman
 one year ago
Best ResponseYou've already chosen the best response.0Well from the physicist point of view its negative (due to the co ordinate system) but this is real life and depths aren't measured to be negative. So go for positive!

Festinger
 one year ago
Best ResponseYou've already chosen the best response.0dw:1374711426591:dw Draw a diagram!

please88
 one year ago
Best ResponseYou've already chosen the best response.0I'll choose the negative

theEric
 one year ago
Best ResponseYou've already chosen the best response.1I guess there was more information to solve it? I don't know. Anyway, I would guess "positive." I'm not 100% on that, but 1. Depth was measured to b 2.0m, so it will not look inverted, like 1.5m. 2. If it is a quantity irrelevant of sign, it would be used as positive, right? Like, distance between two point with no specified coordinate system. 3. Wikipedia pointed me to a convention of measuring depth in a well. Down is the positive direction. Makes sense for the pool, too, I guess. "Sign Convention  Depth increases positive in the downward direction."  http://en.wikipedia.org/wiki/Depth_in_a_well#Depth_in_a_well_as_used_in_the_oil_and_gas_industry
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
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...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 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.