Any Physics expert here?
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fark ur mother chee bye okOriginally posted by ditzy:I'm an accountant, don't let my profile fool you.
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Hey, don't be so nasty, you see me scolding vulgarities all the time?Originally posted by AMEN567889:fark ur mother chee bye ok -
cuz u made me dulan liaos..so i scold u ish rights.Originally posted by ditzy:Hey, don't be so nasty, you see me scolding vulgarities all the time?
juz tell me..are u an uni grad or poly grad? -
1. Negligible resistance.
2. Not close to speed of light?
3. Uniform gravitational pull?
4. Constant horizontal velocity but it is sort of mentioned in 1.
5. Object has mass.
Lol. -
The more you want me to tell, the more I won't tell!!!Originally posted by AMEN567889:cuz u made me dulan liaos..so i scold u ish rights.
juz tell me..are u an uni grad or poly grad? -
wa pro..Originally posted by Artiwizoras:1. Negligible resistance.
2. Not close to speed of light?
3. Uniform gravitational pull?
4. Constant horizontal velocity but it is sort of mentioned in 1.
5. Object has mass.
Lol.
either u are from jc or ur a uni grad who major in phy -
omg!!! i m so angry!!!!Originally posted by ditzy:The more you want me to tell, the more I won't tell!!! -
Lol, stop fighting. In case TS come in to see this post screwed up. Lol.
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NQNT
No Question No Talk
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ERHH SORRY ARH
not that I look down upon you all
just that I waited a long time just now still no one replies so I logged off
my question is about light interference
double slit one
when the intensity of light doesn't affect the fringe seperation right..cos the equation x=landa(Big D/ small d)..you know lah..will it affect the intensity on the screen? if the intensity of the light incident on the slit is increased, the intensity on the screen will also increase right?..how to explain arh?..is it saying that since intensity is proportional to amplitude and since intensity is lowered, amplitude is lower and the resultant amplitude on the screen will also be greater? As such, the intensity is higher?
any one can offer a better or full explanation? -
^^
i tell you a secret....
speed of light is 3x10^8m/s
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piak you hard in your assOriginally posted by popikachu:^^
i tell you a secret....
speed of light is 3x10^8m/s
^^
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been eons since i last touched physics... in any case i'm inclined to believe intensity has no effect on fringe speration.
see wiki for details..........
http://en.wikipedia.org/wiki/Double_slit_experiment -
ok ! duno this ans, next question pls !
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Originally posted by ditzy:I'm an accountant, don't let my profile fool you.
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Hmm I am a clerk, ( a lady)Originally posted by Diehard_89:ERHH SORRY ARH
not that I look down upon you all
just that I waited a long time just now still no one replies so I logged off
my question is about light interference
double slit one
when the intensity of light doesn't affect the fringe seperation right..cos the equation x=landa(Big D/ small d)..you know lah..will it affect the intensity on the screen? if the intensity of the light incident on the slit is increased, the intensity on the screen will also increase right?..how to explain arh?..is it saying that since intensity is proportional to amplitude and since intensity is lowered, amplitude is lower and the resultant amplitude on the screen will also be greater? As such, the intensity is higher?
any one can offer a better or full explanation?
But if my jc work do not fail me, I think we can say using quantum physics phenomemon that intensity is proportional to number of photon.
Hence the higher the intensity of light source, themore photons it produces, and hence each light band on the screen recieved more photons, thus each light band on the screen is brighter(or higher intensity)
Hope this help in some way. -
The projectile motion is a parabola.Originally posted by AMEN567889:1 question.
what are the 2 assumptions made when calculating projectile motion?
Hence 1) no air resistance.
2) there must exist a constant acceleration in 1 direction, usually in the negative y direction.
Hope the ans from a clerk can be of help in some way. -
Can you maybe rephrase you question, from what i understand.Originally posted by Diehard_89:ERHH SORRY ARH
not that I look down upon you all
just that I waited a long time just now still no one replies so I logged off
my question is about light interference
double slit one
when the intensity of light doesn't affect the fringe seperation right..cos the equation x=landa(Big D/ small d)..you know lah..will it affect the intensity on the screen? if the intensity of the light incident on the slit is increased, the intensity on the screen will also increase right?..how to explain arh?..is it saying that since intensity is proportional to amplitude and since intensity is lowered, amplitude is lower and the resultant amplitude on the screen will also be greater? As such, the intensity is higher?
any one can offer a better or full explanation?
Increase in I = Increase in A
Those bright regions wil be even brighter as the resultant A increase, implies that intensity also increases.
But at dark region, resultant of A will be the same which is 0. Its intensity will have no change.
And, A does not have any effect on fringer seperation since it is independent on A.
Oh yes, this is under the assumption that the distance between the slit and the screen is still the same.
If the distance is different. Then it would be a different case all over.
Explanation is that since the distance between the slit and the distance is further, the waves that are traveling will lose energy to the surrounding. Amplitude decrease, implying that resultant amplitude decreases. Thus intensity would decrease due to the distance of the screen and slit being further away. -
minimal air resistance and fixed gravitational accerlation.Originally posted by AMEN567889:1 question.
what are the 2 assumptions made when calculating projectile motion? -
Explain this:Originally posted by popikachu:^^
i tell you a secret....
speed of light is 3x10^8m/s
^^
E=MC^2 -
lol superposition and quantumOriginally posted by Diehard_89:ERHH SORRY ARH
not that I look down upon you all
just that I waited a long time just now still no one replies so I logged off
my question is about light interference
double slit one
when the intensity of light doesn't affect the fringe seperation right..cos the equation x=landa(Big D/ small d)..you know lah..will it affect the intensity on the screen? if the intensity of the light incident on the slit is increased, the intensity on the screen will also increase right?..how to explain arh?..is it saying that since intensity is proportional to amplitude and since intensity is lowered, amplitude is lower and the resultant amplitude on the screen will also be greater? As such, the intensity is higher?
any one can offer a better or full explanation? -
*Adds water to anhydrouscoppersulphate*Originally posted by anhydrouscoppersulphate:lol superposition and quantum
Now we have copper sulphate solution. -
g = 9.81m/s^2Originally posted by ditzy:Wah that's a tough one man, any physics pro out there care to enlighten?
and
negligible loss of energy due to friction between medium( air in this case ) and the object.
physics is mostly abt conservation of energy and momentum. -
anyway i believe u shud try to investigate or find the answer urself...
i believe thats the way to learn..
and thru the investigation process, u tend to remember longer and more vividly also...
my uni tutorials some of them i take half a day juz to do 2-3 qns...time is impt of cus, but the more impt ting is to fully understand ur work..
and dun be afraid to make mistakes..its better to make mistakes now den to make them during exams, or worse, in ur work next time..
good luck~!
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just a note to the TS: intensity is proportional to the square of the amplitude, not just the amplitude if you meant that