Physics: Post your doubts here!

[Ebrahim12]

Got it. if the previous question is "show that~", should I use that value in the question or the value I calculated in more s.f ?

Either one works

 

[Mts.99]

How does vertical velocity of projectile change with time if theres no air resistance?

 

[A*****]

How does vertical velocity of projectile change with time if theres no air resistance?

There is constant acceleration so v changes at a constant rate of 9.81m/s²

 

[amina1300]

Q If the P5 question in march 2018 came from youngs modulus and the waves section it means that these topics won't be repeated in tommorows exam?

 

[Mts.99]

There is constant acceleration so v changes at a constant rate of 9.81m/s²

means its should be a straight line thru origin right?

 

[A*****]

means its should be a straight line thru origin right?

Yes

 

[ba-lock-ey]

Anyone can tell me the s.fs of paper 2?? 2 or 3 s.fs? ;( and good luck on your tmr's exam!

It depends on the data given. For example, all the values you work with are to two sf so you put your answers to 2 sf. Then again, sometimes they tell you to how many sf your data must be given in.

 

[ba-lock-ey]

How does vertical velocity of projectile change with time if theres no air resistance?

Acceleration is always 9.81 ms-1. Horizontally, there is no change but vertically, if your velocity increases uniformly when there is no air resistance because acceleration is always 9.81 ms-1

 

[Psyvlone007]

No

Q If the P5 question in march 2018 came from youngs modulus and the waves section it means that these topics won't be repeated in tommorows exam?

Cant depend because Feb 18 chem 22 and may june 18 22 both excluded partial pressure/conc. Question

 

[furuta]

Any predictions for physics p5 tmrw?

 

[Candy22]

how many marks is the diagram worth in Q1 for paper 52?

 

[ughkno]

how many marks is the diagram worth in Q1 for paper 52?

Drawing the diagram itself has 1 mark. Including any additional details within the diagram gives you more points.

 

[Holmes]

how many marks is the diagram worth in Q1 for paper 52?

1 only

 

[Holmes]

Any predictions for physics p5 tmrw?

anyone reply to this post

 

[furuta]

ok I have a q since im Really bad rearranging equations. ):
suppose, God forbid, I get the gradient and y intercept formula wrong in Q2 (which InshaAllah, hopefully not), later, when I have to calculate values using the gradient and y intercept for the last two parts of Q2... will I get ecf?

 

[Mts.99]

For q2 in P5, if the axes are labelled something like "time/10^-2" etc, do we take 10^-2 in account when doing calculations? like if a value is calculated using gradient/y-intercept

 

[GarryTheGhost]

should i do question 2 or 1 first in paper 5

 

[Fardeen3342]

should i do question 2 or 1 first in paper 5

its your preference would you rush a paragraph or some calculations ?

 

[Fardeen3342]

s

anyone reply to this post

some dude said magnetism on this thread

 

[GarryTheGhost]

it could be anything, all the 52 papers are like mechanics didn't see any electric questions in 52 after 2016???