Good Morning bloggers

well its a new beautiful day today! well in class yesterday, thursday the 11th, (sorry about my spelling and what not)  we had our dynamics test!! woot! it was pretty simple test and i don't know what else to say. O ya! Ms.K gave us that new booklet of notes that we should read before today's class. I think that's  all we did? test and the new book for the new unit? ya?alrity then cya all in class!! next scribe is rebecca.

Bloggin' On The 27th!

HEYYYYYY everyone :) It'sa me!!!! soooooooo.... I'm scribin' eh?...... Well let's get this blog on the road I guess.... :D.......Uhh......No.....I can't think when I'm tired so I'm going to bed and sleep and do it in the morning when I'm rested!! :) C'yall in the mornin'!!!!!!!

Good Mornin' and welcome to the 28th of October!!!! Now to business... :)

Now if my memory serves me right then I believe we went over the 2 review sheets. Now starting with the sheet Study Guide here are the answers:

1. 48.2 - 9.2

2. 0-50

3. 131.92 - 24.93

4. 0-140

5. The equation of a linear relationship is y=mx+b

6. The shape of the graph of a linear relationship is a straight line.

7. The equation of an inverse relationship is y= a/x

8. The shape of the graph of an inverse relationship is a hyperbola.

9. The equation of a quadratic relation is y=ax^2+bx+c

10. The shape of the graph of a quadratic relationship is a parabola.

Yipee!!!! Now for sheet 2!!!

Exercise 1

a) It would be an inference because you are coming to a conclusion using the observations you have made.

b) This would be scientific law because theory is an attempt to explain how nature works but law is just a generalization.

c) Yes because we are creating a visual image of what we think is inside the box.

d) We would need more information or different observations.

Exercise 2

a) It's a law because it's not trying to explain why nature is working the way it is.

b) Charles' law is a law of science and math and whatnot, whereas stopping your bike is a law of society where you could get into trouble if you fail to do what the law says of you.

c) Quantitative because he was making a mathematical equation so he would need the numbers to do so.

d) This would be a theory or model because it is trying to explain and show how nature works.

e) The experiment would need to be done many more times on different gasses in different quantities and in different temperatures.

Exercise 3

a)

x | y

___|____

1m | 2.0s

2m | 4.0s

3m | 6.0s

4m | 8.0s

5m | 10.0s

b)

12-|

10-| .

8-| .

6-| .

4-| .

2-| .

0-|________________________

| | | | | |

0 1 2 3 4 5

c) slope = rise/run = 2-0/1-0 = 2

the equation would be T=(2m/s)m

Exercise 4

Qualitative observations including, in the wise words of Alex, quality, comfort and price. :)

Exercise 5

a)

x| 2cm3 | 4cm3 | 6cm3 | 8cm3 | 10cm3

_|____ |_____|____ |_____|______

y| 10g | 20g | 30g | 40g | 50g

b)

50-| .

40-| .

30-| .

20-| .

10-| .

0-|__________________

| | | | | |

0 2 4 6 8 10

c) slope = 10/2= 5

equation g=(5 g/cm3)v

Well, that about wraps it up. We were also given the questions to do from the text book but I do not remember which questions they are..... O well...... Good luck to everyone on the test today!!!!! Scribe will be...............................................KATIE

September 11/08

HEY!!!!!!! It's my turn to scribe today!!! Woo!!! Alright, down to business. Today in class we had the sub who told us to do those questions 1-6 on page 12. I should probably get my sheet so i can write down helpful tips on the blog here. Alright, so, most of the questions involve the motion of waves.

Question 2, you're solving for frequency so its as simple as counting the number of waves and time and plug it into the equation frequency=cycles/second.

Question 3, convert 580 khz into 580000 Hz and divide into the speed of light. The seconds will cancel out leaving you with the answer in meters which is what wavelenght is measured in so presto! you're done that question!

Question 4, convert 2.5 cm into meters. Then substitute into velocity=(frequency)(lambda) solve for frequency since you know wavelength and speed. Then convert your frequency into period by righting out frequency as cycles/second and then inverting it to seconds/cycle.

Question 5, There's a alot of parts to this one, so hang on!

a) It's as simple as multiplying the amplitude of r the wave by 2.

b) Quite simple again, solve for velocity, velocity=(frequency)(lambda), fill lambda and the wave speed and jus solve for frequency

c) Using the frequency from the last question, simply just invert the frequenc from cycles/second to seconds/cycle to get the period

d) This one is a little bit tricky, to start, you need to cross multiply to see how long it takes for the wave to 1km, to do this convert 1km into 1000m, then cross multiply and solve for seconds in the equation of 450m/1sec = 1000m/ ???sec, then using frequency from 2 questions ago, (frequency is cycles per second) multiply your answer for seconds by the frequency and you should be left with an answer with the unit of cycles.

e) And we have already solved this question in the question above.

Question 6, The wave would be slower because if you see on page 7 of the blue booklet, as the pulse hits the higer density medium of the second spring it slows down.

And that is all we did in class on this day of September the 11th, 2008 a.d.

My mother told me to pick the very best scribe and you, are, IT! Nelsa :):)

Live long and prosper everyone!!!!!! :):)