Physics HW9 - kim(jkk547 – HW09 – Tsoi –(58020 1 This...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: kim (jkk547) – HW09 – Tsoi – (58020) 1 This print-out should have 17 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points An incompressible, non-viscous liquid of den- sity ρ flows with speed v u into a pipe of diam- eter d u . The diameter of the pipe decreases to d y at its exit end. The elevation of the en- trance is h above the elevation of the exit end of the pipe. The pressure at the exit of the pipe is P y . P u v u d u P y v y d y h What is the velocity v y of the liquid flowing out of the exit end of the pipe? 1. v y = parenleftbigg A u d 2 y parenrightbigg v u 2. v y = parenleftbigg A u d y parenrightbigg v u 3. v y = parenleftbigg A y d u parenrightbigg v u 4. v y = parenleftbigg A y d 2 u parenrightbigg v u 5. v y = parenleftbigg d u d y parenrightbigg v u 6. v y = parenleftBigg d 2 y d 2 u parenrightBigg v u 7. v y = parenleftbigg d 2 u d 2 y parenrightbigg v u 8. v y = parenleftbigg d y d u parenrightbigg v u 9. None of these 002 (part 2 of 2) 10.0 points Note: P atm is atmospheric pressure. Applying Bernoulli’s principle, what is the pressure P u at the entrance end of the pipe? 1. P u = P y + ρ g h 2. P u = P y + ρ g h + 1 2 ρ ( v u 2- v y 2 ) 3. P u = P y- ρ g h 4. P u = P y- ρ g h + 1 2 ρ ( v u 2- v y 2 ) 5. P u = ρ g h + 1 2 ρ ( v u 2- v y 2 ) 6. P u = P y + ρ g h + 1 2 ρ ( v y 2- v u 2 ) 7. P u = P y- P atm- ρ g h + 1 2 ρ ( v u 2- v y 2 ) 8. P u = P y- ρ g h + 1 2 ρ ( v y 2- v u 2 ) 9. P u =- ρ g h + 1 2 ρ ( v y 2- v u 2 ) 10. P u = P y- P atm + ρ g h + 1 2 ρ ( v y 2- v u 2 ) 003 10.0 points10....
View Full Document

Page1 / 4

Physics HW9 - kim(jkk547 – HW09 – Tsoi –(58020 1 This...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online