Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be...
-
Upload
carol-mitchell -
Category
Documents
-
view
212 -
download
0
Transcript of Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be...
![Page 1: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/1.jpg)
Bellwork
What is the conservation of energy?
Lab due tomorrow (Fri. 1/17/14) Energy can not be created or
destroyed, but it can be transformed from one form to another, the total amount never changes.
![Page 2: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/2.jpg)
Conservation of Energy and the Egg Drop Project
1/16/14
![Page 3: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/3.jpg)
Mechanical Energy
If there are no non-mechanical energies involved in a system, then mechanical energy can transform from one energy to another.
PEint + KEint = PEfinal + KEfinal
![Page 4: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/4.jpg)
PE = 10000 JKE = 0 J
PE = 7500 JKE = 2500 J
PE = 5000 JKE = 5000 J
PE = 2500 JKE = 7500 J
PE = 0 JKE = 10000 J
PE = 10000 JKE = 0 J
PE = 7500 JKE = ?
PE = 5000 JKE = ?
PE = 2500 JKE = ?
PE = 0 JKE = ?
![Page 5: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/5.jpg)
Mechanical and Non Mechanical Energies
If there are non-mechanical energies involved in a system, energy is still conserved.
PEint + KEint = PEfinal + KEfinal + TE
(on formula card)Used in the lab!
![Page 6: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/6.jpg)
Conservation of Energy For objects falling or going down a
hill Gravitational potential energy is
being transferred into kinetic energy and thermal energy (if friction and air resistance is accounted for)
PEint + KEint = PEfinal + KEfinal + TE
![Page 7: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/7.jpg)
Energy Relationships
Energy – Flow Chart
Energy
Mechanical Non-mechanical
Light Sound HeatKinetic Potential
Linear
Rotational
Gravitational
Elastic
Electric
Magnetic
![Page 8: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/8.jpg)
Equation
Work and Kinetic Energy
![Page 9: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/9.jpg)
Egg Drop Project
Work Potential Energy (top) Kinetic Energy (bottom) no TE Velocity (bottom) Momenta (bottom) Force (bottom) Power to stop the egg Time (max) to stop the egg
![Page 10: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/10.jpg)
Egg Drop ProjectCatchers due next Tues. 1/21/14!
Bring in, store bought, raw eggs if you want multiple tries.
You can not modify the egg (face okay)
![Page 11: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/11.jpg)
Calendar Ahead Fri. 1/17 – Lab Due Tues. 1/21 – Egg Catchers Due Thur. 1/23 – H.W. Assignment Due Mon. 1/27 – Egg Project Analysis
Due Wed. 1/29 – Test Review Due Thur. 1/30 – Energy Test Part 1 Fri. 1/31 – Energy Test Part 2
![Page 12: Bellwork What is the conservation of energy? Lab due tomorrow (Fri. 1/17/14) Energy can not be created or destroyed, but it can be transformed from.](https://reader036.fdocuments.net/reader036/viewer/2022081009/56649efc5503460f94c0ec95/html5/thumbnails/12.jpg)
Today
Finish the lab Work on the homework assignment Work on project analysis