How was physics paper 12?

[amina1300]

What did you guys choose for the hay and cannon ball experiment?

alpha exp. wbu?

what did u get for the one which had mg as the A option?

 

[amina1300]

ANSWER of the Q with the option mass*sqrt(2gh1) - .....m*sqrt(2gh2) ?

 

[haithsoul]

alpha exp. wbu?

what did u get for the one which had mg as the A option?

i put c the m(g-v2 something) , it was C i think.

 

[haithsoul]

What did you guys choose for the hay and cannon ball experiment?

alpha experiment right?

 

[haithsoul]

ANSWER of the Q with the option mass*sqrt(2gh1) - .....m*sqrt(2gh2) ?

Yea i put A i think.

 

[amina1300]

i put c the m(g-v2 something) , it was C i think.

I got mg others didnt make sense when i rearranged the equ of motions .

 

[amina1300]

wht did they ask for btw?

 

[haithsoul]

I got mg others didnt make sense when i rearranged the equ of motions .

im not sure but mg is the full weight without air resistance, you need to rearranged motion equation to get acceleration.

 

[Error Syntax]

Tbh I used the energy method where gravitational potential energy - kinetic energy=Frictional force x height(distance) I got C in that question

 

[haithsoul]

What about the question on the wheel with 50 teeth and rotates 10 times in a second?
they asked for wavelength right?

 

[Dukula Jayasinghe]

No, the box thing, i mean the resitivity uncertainty, i asked the nerds, they said C. I just put C :/ . didnt have time. Wiii justpastpapers send the paper tomorrow?

 

[Dukula Jayasinghe]

What about the question on the wheel with 50 teeth and rotates 10 times in a second?
they asked for wavelength right?

what did u put? I put 0.66m i think (A)

 

[haithsoul]

what did u put? I put 0.66m i think (A)

Damn i put 6.6 C, are u sure man?

 

[Error Syntax]

Yeah mine was also A for that question

 

[haithsoul]

No, the box thing, i mean the resitivity uncertainty, i asked the nerds, they said C. I just put C :/ . didnt have time. Wiii justpastpapers send the paper tomorrow?

Lmao ''i asked the nerds''

 

[Dukula Jayasinghe]

Damn i put 6.6 C, are u sure man?

No. I thought like this. 50 teeth, in 1 second , 10 revolutions. 10x50=500. They said frequency was equal to some shit(i guess number of osscilations) or something like that per second, so f = 500 Hz. Yeah. So 330/500 = 0.66m

 

[Dukula Jayasinghe]

Lmao ''i asked the nerds''

Dude, i am not good in physics. I had to ask the nerds lol!!!

 

[haithsoul]

Yeah mine was also A for that question

How man? can u clarify please?

 

[Dukula Jayasinghe]

How man? can u clarify please?

hOW DID u get ur asnwer?

 

[haithsoul]

lol

Dude, i am not good in physics. I had to ask the nerds lol!!!

i see i think i divided by 50 instead. Well i cant expect to get all right, i think ill get 33-35 which is good enough.