P.H.Y.S.I.C.S.

[laaaaax-deactivated20110919]

...

[ldphysics-blog]

not soon enough

laaaaax:

so serious question…when are we done with tumblr?

[ldphysics-blog]

Midterm Review

i hope this midterm isn't as hard as some of these review problems have been

[ldphysics-blog]

Entire writeup of Chapter 1A and 2A with answers to problems.

[ldphysics-blog]

Chapter 2A Problem

A) The position of the bicycle at 1.00 minute is 35 meters.

B) The position of the bicycle at 3.50 minutes is 35 meters.

C) Displacement= 35m - 35m --> 0m

D) The bicycle is not moving because there is no position change.

[ldphysics-blog]

Chapter 2A Formulas

Time interval- Change in Time= Final Time - Initial Time

Displacement- Change in Distance= Final Distance - Initial Distance

[ldphysics-blog]

Chapter 2A Definitions

Position-separation between the object and the origin

Distance-how far the object is from the origin

Magnitude-the size

[ldphysics-blog]

Chapter 1A Problem

P=m/v

m=25.6 g

v=(1.2cm)(1.2cm)(1.2cm)-->1.7cm^3

P= 25.6g/1.73cm^3

P= 14.8g/cm^3

[ldphysics-blog]

Chapter 1A Formulas

Linear Relationship- y-mx+b

Slope- m=(change in y)/(change in x)

[ldphysics-blog]

Chapter 1A Definitions

Physics-the most basic of sciences

Dimensional Analysis-the use of unites to check work

Significant Figures-valid digits in a measurement

Scientific Method-use of question, research, hypothesis, experiment, data, and conclusion to formulate new knowledge

[ldphysics-blog]

my face after the test =D

[enzophysics-blog]

Physics Class January 6, 2011

[ldphysics-blog]

i used these for my test lol

lmm1093:

enzophysics:

Change of state.

To boil or melt, heat must be added. To condense or freeze, heat must be removed

Heat of fusion- amount of energy needed to melt 1 kg of a solid.  Heat of vaporization is the amount of energy needed to vaporize 1 kg of a liquid. 

Heat of fusion is represented by Q=mHe and Heat of Vaporization is represented by Q=mHv

 Thanks…these notes have all been very helpful!

[ldphysics-blog]

very easy

carbonephysics:

Test was pretty easy - not as hard as “open-book” tests usually are

[ldphysics-blog]

Open Book Test

thank god we were allowed to use our notes and the textbook otherwise i don't think i would have done as good at all.

[ldphysics-blog]

1.5.11

Thermal Energy is conserved in an isolated (closed) system

Calorimetry is process by which we measure specific heat

E1+E2=Constant ==> E1=-E2

Qin=Qout

[ldphysics-blog]

1.3.11

Thermal Energy

molecules present in gas have Potential and Kinetic Energy

total energy of the molecules = Thermal Energy

average energy per molecule related to temperature of the gas

Temperature not dependent on number of particles in object

   Conduction

Transfer of heat ONLY HOT TO COLD!!!!

Temperature scales: Celsius, Fahrenheit, Kelvin

***Q=mCT***

Q=heat absorbed

m=mass

C=specific heat capacity

T=change in temperature

[ldphysics-blog]

how could any student look foward to a test?

jpich:

chrisphysics:

bergsphysics:

nyyrule501:

Everything with the Lab & Start up quiz went well… Pretty simple topic - looking forward to the test on friday  

Why wuld u be looking foward to a test -___-

I agree. why would you look forward to a test? lol

Cause he’s Steven, that’s why. -_______-

[ldphysics-blog]