Biology; Chemistry; Physics: Post your doubts here!

[A*****]

How do you guys get yourselves to study Biology?

The other two sciences have a mathematical portion so it's easier, for me at least, to push myself to practice them.

Same with me...learning bio seems difficult

 

[Asad.Babur]

Are scientific calculators allowed in Physics 5054? All 3 exams? (12, 22, 42)?

I have Casio 991-ESPlus

 

[Talha Jameel]

Are scientific calculators allowed in Physics 5054? All 3 exams? (12, 22, 42)?

I have Casio 991-ESPlus

Yes. Allowed

 

[Sofia James]

How's the prep going everyone?

 

[A*****]

How's the prep going everyone?

R u giving As or A2 this year?

 

[A*****]

Can anyone plz help me...In the b (iii) 2. part, shouldn't it be a negative sign between the two vertical components? The mark sheme says it's a positive one
Solving it with + between them gives a different answer which is also mathematically correct but the answer in the ms comes only with a negative sign
Plz helpppp

 

[Sofia James]

Nah, O'levels

 

[A*****]

Nah, O'levels

Ohh right!
Anyways, Best of luck

 

[studyingrobot457]

Can anyone plz help me...In the b (iii) 2. part, shouldn't it be a negative sign between the two vertical components? The mark sheme says it's a positive one
Solving it with + between them gives a different answer which is also mathematically correct but the answer in the ms comes only with a negative sign
Plz helpppp

the sign doesn't matter because if you read the question carefully it says "the magnitude of the velocities"

 

[A*****]

the sign doesn't matter because if you read the question carefully it says "the magnitude of the velocities"

Yeah it shouldn't HAVE mattered but the answers coming are different if we use either of the signs and both of the answers are mathematically correct when they are put back into the equation
Plz solve it urself once using both + and - and then tell me what's ur answer

 

[amina1300]

Today s physics atp what does practical error mean? And what was the angle of refractiin

 

[Asad.Babur]

Today s physics atp what does practical error mean? And what was the angle of refractiin

*Angle of reflection? Ya refraction?

 

[amina1300]

*Angle of reflection? Ya refraction?

*Angle of reflection? Ya refraction?

angle of reflection

and the practical errors?!

 

[Abdul Moizz]

amina1300 the angle of reflection was 41-42 degrees.It was not 40 degrees .

 

[Sofia James]

amina1300 the angle of reflection was 41-42 degrees.It was not 40 degrees .

Yeah!

 

[Sofia James]

What about the practical errors tho?

 

[mustafa4000]

Zafar Sulehri Bio notes
http://www.mediafire.com/file/vx6ldiob91qoli8/Zafar_Sulehri_Greenhall_Biology_Notes.pdf

 

[allm200]

I wanted to ask that if I give all my sciences subject in may 2020 or 2 subjects in oct 2018 and the others in may 2019, then will this action effect my olevel result in one way or another?

 

[Sofia James]

Guys, in chem today, that ammonium chloride wala MCQ what was the correct option? 1,2 and 3? Because it was written in teh question : why does it form in the position shown?

 

[Sofia James]

also, if my answer to the moles question was incorrect, will i get atleast 1 mark for the working? And like if 2 marks are deducted it wont matter right?