PH202 HW1-2

PH202 HW1-2 - Oregon State University Physics 202 HW1-2...

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

View Full Document Right Arrow Icon
Oregon State University Physics 202 , Winter 2010 HW1-2 (due Jan 15 at 5:00 p.m.) Page 1 Oregon State University Physics 202 Winter Term, 2010 HW1-2 Note: This HW assignment, due January 15, covering topics—mixed freely—from Chapter 13 of the text. Of these problems, only two will be scored (for a possible 20 points). Donʼt forget the extra credit point that is available, too—see the course web site, under the links for recitation/Homework (HW). These problems are presented in no particular order and may freely use/mix concepts throughout the assigned sections of Chapter 13. Follow the recommended format for problem solutions, use SI units unless directed otherwise, and assume three signi± cant digits in all numerical answers. 1. Pure water and then oil (which donʼt mix) are poured into a U-shaped tube, open at both ends. The liquids come to equilibrium as shown here. What is the oilʼs density? 2. A raft is made of 12 identical logs lashed together. Each log is 36.0 cm in diameter, 7.25 m long, and has a density of 750 kg/m 3 . How many 60-kg persons can the raft hold (fl oating in pure water) while still keeping everyoneʼs feet dry? 3. Using Archimedesʼ Principle and the labels and diagram shown here: (a) prove that if an object is fl oating in a liquid, the fraction of the objectʼs total volume that is immersed (below the surface) is the ratio of its density ( ρ obj ) to the liquidʼs density ( ρ liq ); (b) prove that when ice melts in a glass of water, the water level does not change. 4.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/27/2010 for the course PH 202 taught by Professor Staff during the Spring '08 term at Oregon State.

Page1 / 3

PH202 HW1-2 - Oregon State University Physics 202 HW1-2...

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