Physics MCQs thread.

[rabib2013]

damn :\

 

[Mobeen]

i have the answers for june 01.

 

[yubakkk]

this also unanswered????? any one??

 

[abrraza]

It should be D,
Gravitational pull depends on the gravitational field of the earth; which remains same throughout.
Pressure exerted on the VERTICAL SIDES (left and right) is SAME (pascals law).
Pressure difference between horizontal sides (top and bottom) would result in upthrust!
but Since that is not an option, D is the only right answer

upthrust is an option see option B ... :%) confusd

 

[hassam]

y dont we use 20 n force...zishi.......i dont undrstnd

 

[Xthegreat]

YUBAKKKK!!! where are you, time to reveal the answer before it's too late!!!! you don't reveal the answer we cannot answer your doubts for sure!

 

[Xthegreat]

i have the answers for june 01.

can i have them? and O/N 01, do u have them too?

 

[arlery]

November 2001 mark scheme for paper 1

 

[Zishi]

y dont we use 20 n force...zishi.......i dont undrstnd

We do use it - and I've got B as the answer from using that 20N force too!

 

[airborne1944]

guys, can potential energy be meaused using this formula: mgv where v is velocity??

 

[arlery]

^

 

[arlery]

^ I've never heard of this formula.

 

[Xthegreat]

guys, can potential energy be meaused using this formula: mgv where v is velocity??

oh, its that question from O/N 2010 right? i don't get it either.

 

[airborne1944]

ya, anyone can explain? v is constant so rate of distance is constant???

 

[abrraza]

guys, can potential energy be meaused using this formula: mgv where v is velocity??

oh, its that question from O/N 2010 right? i don't get it either.

actually rate of energy is Power ... E/t=P ... and Power is equal to Force x Velocity ... this means uptill now rate of energy provided=Fv .. here force is resultant weight (m1g-m2g) takimg g common (m1-m2)g x Velocity .. so answer is D ...

 

[hassam]

I DINT UNDRSTND THAT ZISHIII

 

[Xthegreat]

the answer is A.

 

[abrraza]

the answer is A.

yeah answer is A .. btw ur telling or asking :%)

 

[airborne1944]

guys, can potential energy be meaused using this formula: mgv where v is velocity??

oh, its that question from O/N 2010 right? i don't get it either.

actually rate of energy is Power ... E/t=P ... and Power is equal to Force x Velocity ... this means uptill now rate of energy provided=Fv .. here force is resultant weight (m1g-m2g) takimg g common (m1-m2)g x Velocity .. so answer is D ...

why m1-m2? isnt it m2-m1?

 

[Xthegreat]

the answer is A.

yeah answer is A .. btw ur telling or asking :%)

asking