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# Movemnt IThe Acting Instrumnt THR 213

KU

GPA 3.79

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This 41 page Class Notes was uploaded by Ms. Maddison Aufderhar on Monday September 7, 2015. The Class Notes belongs to THR 213 at Kansas taught by Staff in Fall. Since its upload, it has received 44 views. For similar materials see /class/182349/thr-213-kansas in Theatre at Kansas.

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Date Created: 09/07/15

PHSX213 class Class stuff HW12 uids 0 Due end of the week Distribute Practice Exam solutions on Blackboard MT3 will be on Ch12 4 in Malott 1001 on Wed Nov 14 8930 PM Probable format 1518 multichoice questions 3 HW style questions one on each chapter Problem solving session I have Malott 3005 om 67130 booked for either tonight or tomorrow night 39 Tomorrow Fluids Fluid Flow Equation of Continuity Bernouilli s Principle Mon Nov 12 1 What is a scienti c statement Mon Nov 12 What is a scienti c statement A statement or hypothesis can be called scienti c if it is testable One can conceive a test which can lead to it being falsi ed Note whether or not you believe the statement to be true or not is irrelevant to the issue of whether it deals or does not deal with science in the sense of being testable Moan 12 3 Which one statement is scienti c A Life probably exists on Mars B The moon is entirely made of green cheese C Walking under a ladder will cause bad luck D The universe is full of undetectable objects MonNov 12 4 Archimedes applies to gases too DVD demo 1220 p Helium 018 kgm3 p Air 13 kgm3 The helium lled balloon displaces a volume of air of a certain weight MonNov 12 CheckPoint 3Puzzle I A long cuboid with a square crosssection oats in a uid What is the stable equilibrium position when Viewed from the end 0A 3B Mon Nov 12 C Con gurations A and B are both possible D Configurations A and B are the only possibilities Which one is chosen depends on the ratio of densities 6 The Floating Square Log Problem DVD Demo 1219 39 For more details see WP Reid Am J Phys 31 1963 565 This is not as straightforward a problem as it looks In fact it turns out that all orientations are possible But it does depend on the ratio of the densities Moan 12 7 Explanation Red arrows force due to gravity acting at object s COM Cyan arrows buoyan g at COM of the displaced fluid A NB Onl con rations 0313 Con gurations which mien siibtly with no net torque are perturbed return to the in equilibrium same con g are in stable equilibrium Ch 87 Mon Nov 12 8 Reading Quiz Bemouilli s Principle is a statement about 39 A velocity conservation 39 B momentum conservation 39 C energy conservation D pressure conservation E volume ux conservation MonNov 12 Fluid Dynamics Real uids are complicated beasts we usually need to consider ideal uids with the following assumptions Steady or laminar ow not turbulent Incompressible ow constant density Nonviscous ow ignore friction Irrotational ow objects moving with the uid have no rotational energy about their CoM MonNov 12 10 Equation 01 Continuity 0 A5 m mmhrw 3911 you mid VOAUL WCDCJ V 81 O ardm hog agaump e b aka joumn mgam 39 iQULIC tlmswigLnV i a 0 Firm in I i A quotavCl WTr A m if W L mg 11cm VMiiil k Y mugSH W L L K 0 1Time HA gtm 0w at W n 1th Mm NW 1123 M Equation 0f Continuity InQLwn lmw If Eff macrmij uid quot9 t 1 HH in Wd t 2 1Time r A MkomNW 1123 H2 DVD demo Syringe Water Velocity 131 1 Mon Nov 12 Bemouilli Bemouilli Ball Demo MR3 Especially with it offcenter Mon Nov 12 Bernouilli EquationPrinciple PV2pv2pgyconstant Consequence of energy conservation in an ideal uid read book for derivation If y1 y2 ie horizontal then When the pressure increases the velocity decreases When the pressure decreases the velocity increases MonNov 12 15 CheckPoint A blood platelet drifts along with the ow of blood through an artery that is partially blocked by deposits As the platelet moves from the narrow region to the wider region it experiences 1 an in Pressure 3 2 no change in pressure 3 a decrease in pressure Mon Nov 12 16 CheckPoint A blood platelet drifts along with the ow of blood through an artery that is partially blocked by deposits As the platelet moves from the narrow region to the wider region it experiences I an increase in pressure 3 2 no change in pressure 3 a decrease in pressure Mon Nov 12 17 Explanation Fluid is incompressible so dVdt constant so vwide lt v narrow 39 Y1Y2 So Bemouilli tells us that Pwide gt Pnarrow Moan 12 18 PHSX213 class Questions 39 Introductmy Chapters Describing Motion Ch 2 Ch 4 Fri August 24th 1 Clicker Question What is this picture A One of the James Bond movies B Exploring an underwater cave C The cleaners visiting D Japanese rubber dinghy ad Fri August 24th 2 Announcements Society of Physics Students SPS Starts this Friday at 400 PM Malott 3005 Fri August 24th CheckPoint 3 A person standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed Neglecting air resistance the ball to hit the ground below the cliff with the greater speed is the one initially thrown A upward B downward C neither they both hit at the same speed m AugustZ4th Which msi mevemmsa me graph gOeS with this va mitya V rsusa me graph Tm pa ic l s msi m at tig giSX 251 ms v1 ms 2 0 4 I I 5 2 i Which msi mevemmsa me graph gOeS with this va mitya a a V lfSEULSET M graph 2 Tina pam de s msmtmm at tig giSX 251 ms v1 ms 2 0 4 I I 5 2 i Vectors and scalars 39 Scalars Single valued quantities Mass time energy temperature pressure Vectors Magnitude size and direction Can be 1dimensional 2d 3d nd Eg In a lift sha 1d pool table 2d mountain 3d FriAugust24th 1m Auggm it 24mm The scalar product makes it easy to understand many physics concepts Example work w F 3 Chapter 78 Fri August 24111 9 The ventnn pnndnct makes it nnnien tn nndlenstnnd nnnny physics cnnneptsg Examples tnnqne and nngn nn nnnnmentnnn in nntntinn 4m r i 39 1 1 5 7 j marN mm W quot Anni Fm Anggnn 24mm b Vectors Vectors and Scalars Adding Vectors Geometrically Components of Vectors Unit Vectors Adding Vectors by Components Multiplying Vectors c39 squota39 multiplying by a scalar s 8 75 T multiplying a vector by a vector to obtain a scalar SCALAR PRODUCT E E x B39multiplying a vector by a vector to obtain a vector VECTOR PRODUCT in W243 11 Adding Vectms Actual path a x 395 Net displuccmc 11 is the vector sum 61 i A v 139 quotx Z quot quotx L quot2 5315 JT Bk Kn Scalar Pmduct Tm p1r du1 t a r 9 Q 4 E73 w 5 J V E g 54 g 5 4 3 Amgmm 241m 7 f if I Componel39ltofi along direction of b I IS 1 cos g J g 1 Component of H along climatic of bis 1 cos 4 b Vector Product V 1t n pmdmit gimmit m txvm wmmgs g 2 F5 mud imam V f9 Wh gs 31 Tb g m db dp g gma ar i mic3 mmwm i 25111161 EDS and ma digrw icm f 81f 9 p ama amm by and 913311 by mica o 44gt 2 4 W wmtca e X Em A W243 b M Component forms aszbzaxj axby bxayk Fri August 24th 15 Wihiuidbl gw A1 A2 A3 a b c d Copyright 9 2004 Pearson Education Inc publishing as Addison Wesley hf 15 JAKE m1 4 gt gt gt K K skimquthx LingLUM Slhkws A1 A2 A3 7 17 V x 1 2 L 1 7quot A3 M j 39 quot 4 Parjllleloggam 2 A2 ofA1 andA2 A 7 A I A2 A3 Pgrallelogram 9f A1 A2 and A3 2 2 9 a b V d e 11 Copyright 2004 Pearson Educanion lnc publishing as Addison Wesley Emith glamRig a b C d 6 r j a H V H l Amggumi 7 f f m7 m Viimob ugjw V a b c d 1m Augmm e NW 395 vnwr Aw quot7 7 w A Mff 10 A gum99171M1Lg 1 ngi aw w m QVlgw C WW me 2 C 1 Cx 3 cm Cy 1 cm Cx 4 cm Cy 2 cm Cx 2 cm Cy 1 cm Cx 3 cm Cy 1 cm Cx 1 cm Cy 1 cm 2Q mcowgt J F xm Awmggxuusii 234mb gt a KW w MEL my J9 gums y jij gme ug t 1119 k w f EwQKLQ39JJ C me 2 l Cx 3 cm Cy 1 cm Cx 4 cm C 2 cm Cx 2 cm Cy 1 cm Cx 3 cm Cy 1 cm Cx 1 cm Cy 1 cm Fm mggm 5050 HRW322 An explorer is caught in a blizzard while returning to base camp He was supposed to travel due north for 56 km but when the snow clears he discovers that he actually traveled 78 km at 50 north of due east How far and in what direction must he now travel to reach base camp F AugustZ4th 22 Worked out example emphasizing using symbols for problem solutions HRW Chapter 3 question 22 Step 1 Draw diagram Step 2 De ne variables on diagram Step 3 Write down concept you will use to solve the problem Step 4 Solve the problem algebraically 39 Step 5 Plug in numerical values Fri August 24th 23

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