Physics Unit 4 JUNE 11/6/12

[étudiante]

Heyy how was ur exam?? it was a bit hard isn't it?

Yeah it was... I think I may loose nearly 7-8 marks

 

[*Sandra*]

Yeah it was... I think I may loose nearly 7-8 marks

how did u draw the radioactive graph i didn take Ln wat abt u? and the internal energy que the statement was nt right bcz they was nt ideal gases as they hve P.E ryt? so internal energy doesnot decrease

 

[*Sandra*]

Yeah it was... I think I may loose nearly 7-8 marks

how did u draw the radioactive graph i didn take Ln wat abt u? and the internal energy que the statement was nt right bcz they was nt ideal gases as they hve P.E ryt? so internal energy doesnot decrease

 

[étudiante]

how did u draw the radioactive graph i didn take Ln wat abt u? and the internal energy que the statement was nt right bcz they was nt ideal gases as they hve P.E ryt? so internal energy doesnot decrease

how did u draw the radioactive graph i didn take Ln wat abt u? and the internal energy que the statement was nt right bcz they was nt ideal gases as they hve P.E ryt? so internal energy doesnot decrease

I put both the graphs

well, it was partly true... Internal energy does decrease but the gas may liquefy before 0K

 

[*Sandra*]

I put both the graphs

well, it was partly true... Internal energy does decrease but the gas may liquefy before 0K

how did u plot both? and tht 1st que abt tht microwave detector i wrote tht the galaxy i moving away frm us and the frequence is shifted smethng like tht so tht universe is expanding without limit i don kno even y i wrote ths bt i thnk i cancelled it i 4got is tht ok or no? and 1 que they askd define resshift and how 2 measure distance i ssaid tht red shift measures the speed and use of change in wavelength by original= speed by speed of light i fel its wrng ans isn't it? wat u thnk?

 

[étudiante]

Dont ask how I did that >.<" I ran out of time n did sum crap >.<"
Its correct what u wrote! And even if u scratched it BUT did not write nething more, it will be considered so dw
yes thats correct too, only u need to add that we use v = Hd after dat

 

[*Sandra*]

Dont ask how I did that >.<" I ran out of time n did sum crap >.<"
Its correct what u wrote! And even if u scratched it BUT did not write nething more, it will be considered so dw
yes thats correct too, only u need to add that we use v = Hd after dat

i was abt 2 write abt v=hd bt i didn anyway i don wnt 2 waste ur time u got an exam 2mrow so inshalla we'll talk later wish u al the best and i really fel inshalla 2mrow its goin 2 be easy

 

[étudiante]

i was abt 2 write abt v=hd bt i didn anyway i don wnt 2 waste ur time u got an exam 2mrow so inshalla we'll talk later wish u al the best and i really fel inshalla 2mrow its goin 2 be easy

U'll prob loose just 1 mark for that not more Dw
yeah i do >.<" Inshallah, DO pray for me please
Happy Holidays to you

 

[*Sandra*]

U'll prob loose just 1 mark for that not more Dw
yeah i do >.<" Inshallah, DO pray for me please
Happy Holidays to you

sure i'll pray ok jst 1 more que im soo sry jst wnted 2 confirm the ans 4 teh displacement was smethng 0.091? and the time 4 radioactive was 84s?

 

[étudiante]

sure i'll pray ok jst 1 more que im soo sry jst wnted 2 confirm the ans 4 teh displacement was smethng 0.091? and the time 4 radioactive was 84s?

what displacement? :S
yeah i think it was 84 or 85

 

[*Sandra*]

what displacement? :S
yeah i think it was 84 or 85

the oscillation que

 

[étudiante]

the oscillation que

Yes it was

did u solve the KE question? I couldnt even do the show that for the mas deficit... My power wasnt comming right

 

[*Sandra*]

Yes it was

did u solve the KE question? I couldnt even do the show that for the mas deficit... My power wasnt comming right

i solved it absolutely wrng and no time time was running ok the luminosity graph they askd how to measure its luminosty i said funny ans i said the peak wavelength shows its temp and frm temp we can find lumi. frm the y-axis and the stars lumo.is a multiple of the suns lum. and then i wrote smethng extra bt wrng tht negative correlation gves the brightness

 

[étudiante]

i solved it absolutely wrng and no time time was running ok the luminosity graph they askd how to measure its luminosty i said funny ans i said the peak wavelength shows its temp and frm temp we can find lumi. frm the y-axis and the stars lumo.is a multiple of the suns lum. and then i wrote smethng extra bt wrng tht negative correlation gves the brightness

Same here
Well, ur right till the luminosity part, after that u just had to use L = (sigma)AT^4

 

[*Sandra*]

Same here
Well, ur right till the luminosity part, after that u just had to use L = (sigma)AT^4

wat 2 do my mind was totally blocked frm tension anyway so sryy and i'll close nw so tht u can study hope evrythng wil be ok

 

[étudiante]

wat 2 do my mind was totally blocked frm tension anyway so sryy and i'll close nw so tht u can study hope evrythng wil be ok

I can't understand how I dint get that simple show that question
Inshallah
n sure no problem

 

[*Sandra*]

I can't understand how I dint get that simple show that question
Inshallah
n sure no problem

which 1 the number of molecules?

 

[étudiante]

which 1 the number of molecules?

No the mass deficit question, first part!

 

[*Sandra*]

No the mass deficit question, first part!

i got 7.5 cuz thay said around 8 u jst had 2 subtract jst

 

[étudiante]

i got 7.5 cuz thay said around 8 u jst had 2 subtract jst

Which question? The one for which we had to get 20MeV. I got 20 x 10^8