things you should really memorize. 1. weight does not equal mass!!!! w = mg w = newtons 1 kg = 2.2...
TRANSCRIPT
![Page 1: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/1.jpg)
THINGS YOU SHOULD REALLY MEMORIZE
![Page 2: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/2.jpg)
1. Weight does not equal mass!!!!
W = mg
W = Newtons
1 kg = 2.2 lbs
Mass of average high schooler = 65 kg
Weight of average high schooler = 650 N
![Page 3: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/3.jpg)
2. Slope = rise over run = Δy/Δx…make sure you put in units.
DO NOT JUST COUNT BOXES!
![Page 4: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/4.jpg)
3. Inverse square law: Applies to gravity and electrostatic forces…
not to the nuclear force.
Strong Nuclear Force range = 10-15 m
![Page 5: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/5.jpg)
4. Long, thin, & hot wires have a high resistance and allow little
current to flow.
R = V I
![Page 6: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/6.jpg)
5. The two left hand rules for magnetism.
Fingers = magnetic field linesThumb = direction of current flow
Palm = direction of magnetic force
SN
B
e-
In which direction would this electron be forced if it entered this magnetic field traveling upward?
#1- Magnets
![Page 7: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/7.jpg)
#2- Around a Wire
![Page 8: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/8.jpg)
6. Gravitational, Electric, and Magnetic Field lines never cross, leave & enter perpendicular, and are stronger when
they are closer together.
![Page 9: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/9.jpg)
7. Magnetic Field goes from North to South.
![Page 10: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/10.jpg)
8. Electric Field goes from positive to negative.
-
+
![Page 11: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/11.jpg)
9. Current flow from negative to positive.
![Page 12: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/12.jpg)
10. Longitudinal waves (sound) disturbance is parallel. Transverse waves (light)
disturbance is perpendicular.
![Page 13: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/13.jpg)
11. Refraction- Bends towards the normal going from a less dense to a more dense medium. The speed changes…not the
frequency.
![Page 14: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/14.jpg)
12. Doppler effect- when something is approaching, the apparent frequency goes
up and the wavelength goes down.
![Page 15: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/15.jpg)
13. Energy level diagram in modern (hydrogen and mercury atoms). It takes energy (absorb a photon) to move up the diagram. When you go down the
diagram, you emit a photon (release energy).
ABSORB EMIT
![Page 16: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/16.jpg)
14. Violet has more energy than red.
Why? Because violet has a higher frequency and frequency is related to energy by E = mc2.
![Page 17: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/17.jpg)
15. Nuclear Force is the strongest, but only at short distances.
Force Relative Strength
Range of Force
Force Carrier
Mass Charge
Strong
(nuclear)
1 10-15 m gluon 0 0
Electro-
magnetic
10-2 Proportional to 1/r2
photon 0 0
Weak 10-13 <10-18 m W boson
W boson
Z boson
80.6 eV
80.6 eV
91.2 eV
+ e
- e
0Gravitational 10-38 Proportiona
l to 1/r2graviton 0 0
![Page 18: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/18.jpg)
Shorthand:
• Mag Field N S
• Elec Field + -
• Current - +
• Long (sound) II w/ velocity
• Trans (light) ├ w/ velocity
• Doppler Towards- f Away- f
![Page 19: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/19.jpg)
Graphing:
• Units when finding slope
• Find slope from best fit line not from data table
• No breaks
• Typically start at zero
• Be careful of ind/dep vs. formula for axis and finding slope
• Use a ruler to draw best fit line
![Page 20: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/20.jpg)
How to answer a two point question:[show all work, including the equation
and substitution with units] [2]
Four ways to lose points!!!!
1. Formula…does not have to be solved for the unknown
2. Substitution…make something up if stuck
3. Units…in substitution and answer
4. Answer…check using calc and logic (does it make sense???)
![Page 21: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/21.jpg)
General:
• Put an arrow head on vectors…measure to the tip• Cross off bad choices• Follow directions• Use the tables/know the tables• Use calculator and paper for math• When required, draw a picture and write an
unknown/given• Be thorough with written answers…more is better on the
Regents• You know more than you think…be confident• Use scrap…but make sure answers with work are on the
answer paper.
![Page 22: THINGS YOU SHOULD REALLY MEMORIZE. 1. Weight does not equal mass!!!! W = mg W = Newtons 1 kg = 2.2 lbs Mass of average high schooler = 65 kg Weight of](https://reader030.vdocuments.mx/reader030/viewer/2022032707/56649e0e5503460f94af8bae/html5/thumbnails/22.jpg)
Bring:
• cm ruler
• Protractor
• Calculator w/ fresh batteries
• Pen-blue or black
• Pencils