Dec 12 blog

Hey everyone!

Well today in class we got our Newton's Laws of Motions test back, and Ms.K went over the answers for it. So here are the answers:

1. gravitational, electromagnetic, strong nuclear, weak nuclear

2. The coin will land at your feet because it has the same velocity as the bus.

3. The net force would equal zero.

4. Normal force, gravitational force.

5. 75 N

6. It shows the forces acting on an object.

7.

8 a) acceleration will double

br) acceleration will double

c) 1/8 the acceleration

9.a) 4.oN [S]

b)7.8 [at 40° north of east]

10. a=Fnet/m

= 9.50N[S]/20.0Kg

= 0.475m/s² [S]

b) V=(A)(t)

=(o.475m/s²)(1.86s)

= 0.884m/s[S]

11. a=Fnet/m

= 3.2N[E]/ 6.0Kg

= o.533m/s²[E]

12. a=V/t Fnet=(a)(m)

=8.0m/s /1.5s =(5.33m/s²)(110Kg)

= 5.33m/s² = 586N

13.a) b)

After correctin our test we read through the booklet on Gravitational Fields. Then we got 2 sheets, The Elevator Ride and Force and Weight Concept Development. We worked on the Elevator Ride lab for the rest of the class and we will finish it up on monday.

Have a good weekend!! The next scribe will be Nicole. : )

October 24, Nature of Light

Hey everyone!
I was supposed to do the blog yesterday but I wasn't there, so i'm doing it today instead. :)
Today in class we corrected 3 sheets.

Reteaching Determining Relationships from Graphs

Rainfall versus time: Position versus time:

Slope= 2.7 cm/day Slope=0.13 m/s

equation: R= (2.7 cm/d) t equation: P= (0.13m/s) t + 5.0m

Wave Height versus Distance: Wages versus Workdays:

Slope= -1.1 m/km Slope= $26.00/d

equation: h= (1.1-m/km)d +3.0m equation: W= (23.60/d)

Interpreting Graphs
1.

A. Acceleration is directly proportional to force.

B. y=KX

C. slope= 0.625/kg

D. reciprocal of massE. 23N

F. interpolation

G. 33m/S2

H. extrapolation

2.

A. Y is proportional to X^2

B. 3 and 4

C.3 and 4

3.A B.

C. D.

1. A 2.C 3.C 4.D 5.B

After correcting those sheets we did a quick worksheet about unit conversion. After quickly going over that we picked up two sheets called Visualizing Data, and Nature of Light part 1, and worked on them for the rest of the class. Don't forget we have a test on tuesday! The next scribe will be... Dion!! :)

September 10, 2008

Hi everyone. Today in class we performed an experiment using "snakeys" also known as slinkies. We followed instructions from the green text book and answered questions on a white sheet. In the experiment we discovered that transverse and longitudinal waves have the same charachteristics. When one person pushes the slinky to the right and another person pushes the slinky to the left then you can see the waves passing through each other.

The next scribe is going to be Dion.