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## Week 4 Notes

1 review
by: Emmanuel Ayanjoke

125

1

4

# Week 4 Notes PHYS 1750

Emmanuel Ayanjoke
Toledo
GPA 3.8
Introduction to Physics
Dr. Lawrence Anderson

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Hey guys, here are week 4 notes. I put together the major points for each topic and clear steps for solving the questions given in class.
COURSE
Introduction to Physics
PROF.
Dr. Lawrence Anderson
TYPE
Class Notes
PAGES
4
WORDS
KARMA
25 ?

1 review

## Popular in Physics 2

This 4 page Class Notes was uploaded by Emmanuel Ayanjoke on Saturday September 19, 2015. The Class Notes belongs to PHYS 1750 at University of Toledo taught by Dr. Lawrence Anderson in Fall 2015. Since its upload, it has received 125 views. For similar materials see Introduction to Physics in Physics 2 at University of Toledo.

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Date Created: 09/19/15
Week 4 notes Power DefiniTion of Terms ConservaTion of Energy This simply means ThaT The ToTal amounT of energy in an isolaTed sysTem remains consTanT Recall Ek Ep mF Ek 39Ep iniTial NoTe ThaT energy losT Through fricTion is also parT of The sysTem Therefore Ek Ep final Ek E iniTial Zpath f A5 Power Is The Time raTe aT which work is done P AEAT lhorsepowerz 7457waTTs Energy power Time KWh 36 MJ mega 10539 Tera 1012 1000Joules 023 Kcal39 9478 BTU BriTish Thermal uniT Review quesTions and answers WhaT is The definiTion of The waTT The SI uniT of power equivalenT To one joule per second A horsepower Horsepower hp is a uniT of measuremenT of power 39 The raTe aT which work is done AbouT how many waTTs does a Typical human consume and radiaTe as heaT aT resT 120 waTTs WhaT are Typical efficiencies in energy conversion for human uses When performing inTense exercise efficiency is measured To be in The Typical range of 18 26 Examples solved in class SunlighT carries abouT 1300 Wrn2 aT The disTance of The EarTh Imagine 14 of This power is available in a 24 hr period and we can collecT ThaT fracTion wiTh 20 efficiency in a solar panel WhaT surface area of The EarTh musT we cover wiTh paneis 1390 provide all of Ear rh s electrical needs today 20 x103 TWhyear39 23 x1012 W 35 x1010 m2 Taiwan 0 paer W Su Hal s TLLQ warm 394 x100 2339Qwsm 339 w I I I ogb 32 H 25 agawbgd3 03 1 0M panai 22 X325 5 Cdmz 100 1 DAL Gav 539 w i rit l lovi amtquot Wmhm 3mw 53 015 f 3 m 0345 m ag Qif a 5 Cl IEDXIOIZ gkOma fa snug MomenTum DefiniTion of Terms MomenTum The quonTiTy of moTion of a moving body measured as o producT of HS mass and velociTy MomenTum is also The producT of The force oppiied on an objecT and Time Angular momenTum I The quanTiTy of roToTion of a body which is The producT of HS momenT of inerTia and iTs angular velociTy I BE Ami r ConservaTion of Angular momenTum In on isoloTed sysTem The vecTor sum of all inTernal angular momenTo remains consTonT Angular momentum 1 mvr m m mass v a velocity 3 m radius mg ij1 ervmiam of angular mmnentum If quot393 f 47 In V1111 more Thai thooiioc o ouozatioo 1 is sigoigiicanziaooi ot 553 39 so ogersio iieo n 39 Tommi Emit W goose airscm of B Review questions and answers Conservation Laws Mg mwigg ned It is the quantity of motion of a moving body measured ismslamminnamnmmm rym number I quot M g glmn e t force F acting over a time it change the momentum of an 39 o 19Wgtulg momentum ngo tg conservation of momentum mean Conservation of momentum means ghg theamp39unt of momentum which enters a system will be the some amount when ectric c arge it it 6 mmloer of leptons includes electrons and neutrinos How is momentum conservation related to Newton39s 3quot law Consider a collision 7 Color charge a property of quarks between two objects For such a collision the forces acting between the two 8 Antivsmatter vs 39regular39 matter objects are equal in magnitude and opposite in direction Newton39s third law ie F13 F2 SO also F1 T1 F2 T2 Important points Baryon conservation gt conservation of mass and individual elements Example solved on class 5 ce tra slatio s mmetr lt gt conservationo linear omen u Apgigure srlltater Begins a s m on one skate With an angmar velo i ty of 63 rads By Ti tr l tion et c erv tie 0 er 39 pu39ilgig r arm 3h tl39rizohela eg 5 e egrggsegtier moment of Inertia from 40 R t ervation an In ent m t3 W i new angl gr s gedmom u Ward Takahashi identities 2 electric charge conservation 93 do 003 at l0 rquot m0 me lu m is can SEW wed been Comm oatmeal NOTE the a aw velocf fd Jo is Clqalges 939 5 1X9 3 X 0310

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