Physics, Chemistry and Biology: Post your doubts here!

[shoaib672002]

Need answer fast culd not at all understand this one it is 2005 qp6 q4 d part
View attachment 40678

The question says to state a techinique since the oscillations are rapid one way is
timing X number of oscillations and then divide it by the time or
You could describe the the averaging of the t values
or describing the technique of taking 10 oscillations to find T.

 

[shoaib672002]

Awesome12
shazmina
fantastic girl
Iridescent
shoaib672002
View attachment 40701

 

[shoaib672002]

Awesome12
shazmina
fantastic girl
Iridescent
shoaib672002
View attachment 40701

U could also mention use of fiducial aid

 

[shazmina]

Awesome12
shazmina
fantastic girl
Iridescent
shoaib672002
View attachment 40701

check the height from both the ends of the rule ... if they remain same then the meter rule is horizontal ...
Or u can use a set square to make sure it it perpendicular to the surface

 

[Incartyyy]

High Blood Pressure :
It causes kidney failure because it pushes protien through glomerulus which leads to loss of filtiration power .
Low Blood Pressure :
It causes kidney failure because the shortage of oxygen in kidney leads to accumlation of waste products in kidney that poison it .
princess sofia

Need answer fast culd not at all understand this one it is 2005 qp6 q4 d part
View attachment 40678

i guess maybe we have to use some electronic device in order to obtain the reading.. umm

 

[Incartyyy]

ALL THOSE TAKING BIOLOGY ATP
SHOULD GO THROUGH THIS VIDEO IN ORDER TO GET THE IDEA OF PLANNING THINGS

surely it'll help u all

 

[Awesome12]

ALL THOSE TAKING BIOLOGY ATP
SHOULD GO THROUGH THIS VIDEO IN ORDER TO GET THE IDEA OF PLANNING THINGS

surely it'll help u all

Could you post the link. The video is not here

 

[Incartyyy]

Could you post the link. The video is not here

 

[Incartyyy]

Could you post the link. The video is not here

link isn't appearingg...

 

[Incartyyy]

Could you post the link. The video is not here

 

[fatimah zain]

How can we test the enrgy content of vegetable oil ?, I know that in normal test we use to burn the food samples in a cruicble untill it alights but how are we supposed to burn oil ?

 

[Awesome12]

How can we test the enrgy content of vegetable oil ?, I know that in normal test we use to burn the food samples in a cruicble untill it alights but how are we supposed to burn oil ?

Take the oil in a test tube, and then put it in a water bath. Heat the water bath

 

[fatimah zain]

Take the oil in a test tube, and then put it in a water bath. Heat the water bath

But in this way the experiment wont be reliable . If wedirectly heat the water then we are not calculating the enrgy content rather the rise in tempreture of water is due to the bunsen burner flame

 

[Awesome12]

But in this way the experiment wont be reliable . If wedirectly heat the water then we are not calculating the enrgy content rather the rise in tempreture of water is due to the bunsen burner flame

We can calculate the thermal energy supplied by using the latent heat formula.

 

[fatimah zain]

Thank you Awesome12

 

[Heba A.Moety]

paper 3
a question like this
View attachment 40546

 

[My Name]

ALL THOSE TAKING BIOLOGY ATP
SHOULD GO THROUGH THIS VIDEO IN ORDER TO GET THE IDEA OF PLANNING THINGS

surely it'll help u all

what was the title u wrote that u got the vid!?

 

[My Name]

For biology
in labelling do the lines need to be in ink and also labels
wat ar ethe most important drawing for the labelling questions

 

[awesomaholic101]

this is a question dat im havin in mind for a long, long time.... y nd hw is shallw water more dense than deep water?? coz the rays bend away from normal when it goes from shallow to deep water rite?

 

[Incartyyy]

so just see the line drawn for the total.. well it also depends on the marks given to u.. make sure u do mention when it was lowest and when it became maximum