A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • one year ago

The solution to Problem 3, PSet 10 contains errors and inconsistencies. The problem states that the curve of the trough is given by z=(1/100)x**4, but the lower limit for the integral is given as (1/81)x**4. The length of the trough is stated as 200m, but the picture shows a length of 300m and the solution uses a length of 100m. Finally, the density of water is listed as 1kg/m*3. The solution uses 1000kg/m*3. Note that kg, not g are the correct units for finding energy in joules.

  • This Question is Closed
  1. phi
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes, both the question and answer are a mess. if z goes to 81 we get nicer x values using z= x^4/81 (x= -9 to +9) and who knows what the length is. further, evaluating the iterated integral given in the solution, I get 1.14e9 J which does not match the quoted result of 5.14e10 Joules.

  2. baru
    • 6 months ago
    Best Response
    You've already chosen the best response.
    Medals 0


  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.