How were your Physics P-1 and P-3?

[Karim Nabil]

I did variant one, was very tricky. Did anyone did variant one too? I just dont know which had the greater pressure P or Q I said same as the height would be the same. No idea if correct or not :/

Q, as it's base have a lesser surface area.

 

[qassem babel]

but didnt they say in the beginning that they both have the same volume of water??

 

[Karim Nabil]

but didnt they say in the beginning that they both have the same volume of water??

yes, you're correct
they say the have same volume of water,then equal volumes of water were removed and asked which container exerts largest force on its base...
it have to be Q, because its base is smaller, so twice as molecules can collide and hit the walls per meter square, hence pressure increases.

 

[asirmoh]

What were the answers to the last question on the first page- the fill in the blanks one

 

[qassem babel]

But I believe that pressure in liquids depend on depth (height) rather than the surface area of the base, and if both have the same initial volume and height, when you take equal volumes from both, they will end up with the same height once again. As a result, the pressure would remain the same? It is quite tricky to be honest :/

 

[qpKillerqp]

yes, you're correct
they say the have same volume of water,then equal volumes of water were removed and asked which container exerts largest force on its base...
it have to be Q, because its base is smaller, so twice as molecules can collide and hit the walls per meter square, hence pressure increases.

The base has nothing to do with answer...But it's Q as the reason I stated

What were the answers to the last question on the first page- the fill in the blanks one

YES!!!One of the hardest questions...I did random stuff and apparantly my friends are saying I did it correct...I did "boiling point OF liquid and Freezing point OF liquid"

 

[qassem babel]

My question is, how does it happen if they said in the beginning that both have the same volume of water and the height was 1.4 m for both shapes and then they remove equal amount of volume and end with 2 different heights??

 

[qpKillerqp]

They didn't say same volume,just same height(1.4m)

 

[yoyo00xx]

i can say p32 was easy exept first page it was tricky....

 

[yoyo00xx]

for the questoin of the pressure its not bout the particles that collide cuz water molecules dont collide fast they barley move soo the cup the have a larger surface area on the top will have more pressure because volume=area*depth so it have more surface area so less depth is reduced for the same volume of water
i think this is the right answer
anways i have the last exam left chemistry soo ho gives a damn bout physics its gonne lets think bout chemistry
and then think bout how can we spend our vecatoin

 

[qpKillerqp]

Well I can't really concentrate because I heard many exams are leaked this year,this means higher threshold (

 

[qassem babel]

I just feel the same qpkillerqp. I am afraid that it would be difficult to achieve A*s this year. I also believe it's unfair for us, the students who spend nights and nights studying trying to achieve A*s

 

[R_Ma7mooD]

I just feel the same qpkillerqp. I am afraid that it would be difficult to achieve A*s this year. I also believe it's unfair for us, the students who spend nights and nights studying trying to achieve A*s

100% agreed

 

[Faheen]

The base has nothing to do with answer...But it's Q as the reason I stated


YES!!!One of the hardest questions...I did random stuff and apparantly my friends are saying I did it correct...I did "boiling point OF liquid and Freezing point OF liquid"

the answer for the last question on the first page was

either
resistence of a peice of metal
or
emf of thermocouple
or
pressure of a fixed mass of gas

 

[Faheen]

yes, you're correct
they say the have same volume of water,then equal volumes of water were removed and asked which container exerts largest force on its base...
it have to be Q, because its base is smaller, so twice as molecules can collide and hit the walls per meter square, hence pressure increases.

i think the answer was Q reason being the fact that if the same volume of liquid was removed the height of P would decrease more than that in Q as the surface area of the water was wider in Q and the pressure in lquid depends on the height, the greater the height the larger the pressure

 

[Basaam]

what did you guys get for the half life? (variant 1)

 

[qpKillerqp]

the answer for the last question on the first page was

either
resistence of a peice of metal
or
emf of thermocouple
or
pressure of a fixed mass of gas

Just wondering...how are you so sure of your answer?The clearly asked for PHYSICAL PROPERTIES and most of those you mentioned are chemical properties(I even googled most of them)

 

[qpKillerqp]

what did you guys get for the half life? (variant 1)

It came out for me 41.1 hours but all my friends are saying it's 24 or some sort

 

[Faheen]

Just wondering...how are you so sure of your answer?The clearly asked for PHYSICAL PROPERTIES and most of those you mentioned are chemical properties(I even googled most of them)

its in the physics book, the publisher is federal(i think)

 

[Faheen]

what did you guys get for the half life? (variant 1)

the half life was 12hrs and the answer was 24
i did this one wrong