Lab Review: 1-6 AP Biology Lab Review Lab 1: Diffusion & Osmosis.
The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on...
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Transcript of The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on...
![Page 1: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/1.jpg)
The last days
• Today –Review N7-N10 test, begin review for the final
• Thursday – Open lab, Work on any unfinished lab or problems
• Friday – Review (energy problems using CPS.
• Monday – review• Tuesday – Open lab• Wednesday – 7:00 – 10:00 Final Exam -
All work and extra credit due.
![Page 2: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/2.jpg)
N7-N10 test results
• 90 – 100 10 students
• 80 – 89 7 students
• 70 – 79 5 students
• 55 – 69 4 students
Overall average in the class
• 90 – 100 5 students
• 80 – 89 13 students
• 70 – 79 5 students
• 55 – 69 3 students
Students in this range have a very good possibility of receiving an “A” in the class
Most probable grade is a “B”
Most probable grade is “C”
The above estimates are based on past experience. Past experience has also shown that students can move from one of these groups to another.
![Page 3: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/3.jpg)
Chapter N11
Oscillatory Motion
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Hooke’s law
xkF sxSp ,
xdt
xd 22
2
)cos()( tAtx
The force an ideal spring exerts on an object at position x.
The second derivative of the position with respect to time. A differential equation.
A constant that tells how stiff the spring is.
m
ksThe solution to the differential equation. This gives the position of the object as a function of time. – The equation of motion.
The mass of the object attached to the spring.
Phase angle
![Page 5: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/5.jpg)
Sinusoidal Waves
)cos(),( tAtxf
2
fAmplitude of the wave
Phase rate
ω = angular frequency = 2πf
f = frequency = number of waves per second
f = frequency
Period = T = 1/f = time between wave crests passing a given point.
![Page 6: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/6.jpg)
Simple harmonic motion
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Simple harmonic motion
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Phase Angle
These two oscillations have the same frequency and period but differ by a phase angle of 50º.
50º
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• A 1 kg weight hung on a spring causes the spring to stretch 30 cm. If the weight is hung on the spring, then pulled down 5 cm and released, what is the equation of motion of the weight?
• Step 1, find the spring constant.• F = -kx• F = 9.8 N, x = 0.3 m• k = F/x = 32.7 N/m
sec/72.51
/7.322 rad
kg
mn
m
kf
y = y0Cos(ωt) = 0.05 Cos(5.72t)
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Problems for Friday
• N11B1, B2, B3, S1
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The last days
• Today – chapter N11, our last new chapter
• Tomorrow – Ballistic pendulum lab
• Wed –begin review for the final
• Thursday – Open lab, Work on any unfinished lab or problems
• Friday – Review
• Monday – review
• Tuesday – Open lab
• Wednesday – Final Exam
![Page 12: The last days Today –Review N7-N10 test, begin review for the final Thursday – Open lab, Work on any unfinished lab or problems Friday – Review (energy.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649f1d5503460f94c338af/html5/thumbnails/12.jpg)
The last days
• Today –Review N7-N10 test, begin review for the final
• Thursday – Open lab, Work on any unfinished lab or problems
• Friday – Review (energy problems using CPS.
• Monday – review• Tuesday – Open lab• Wednesday – 7:00 – 10:00 Final Exam -
All work and extra credit due.