Biology; Chemistry; Physics: Post your doubts here!

[Dark Destination]

it can't be gpe,or ke or acc. Only option left is resultant force.

Resultant force was zero, because acceleration is zero.
Newtons first law.

 

[Zain Salman Dar]

it can't be gpe,or ke or acc. Only option left is resultant force.

the speed was constant but increasing which causes the acceleration to be constant but not o :O

 

[Dark Destination]

the speed was constant but increasing which causes the acceleration to be constant but not o :O

It wasn't increasing, it was constant.

The only answer is Kinetic energy. Mass was constant. Speed was constant. Hence, K.E constant.
The Chemical energy in the fuel is used to do work and that is being converted into Kinetic Energy and G.P.E
This isn't a pendulum, where that G.P.E to K.E conversion would be applicable.

 

[asadalam]

the speed was constant but increasing which causes the acceleration to be constant but not o :O

Firstly it was a distance time graph so if it is a straight line velocity is constant so acceleration will be ZERO.It was moving up the hill so GPE was increasing.Velocity and mass were constant so it was ke as constant.Velocity was constant so resultant was zero.And that loss gain thing is when objects fall from a certain height.

 

[asadalam]

Alright guys i'm going to sleep,best of luck for tomorrows paper.........

 

[Zain Salman Dar]

Firstly it was a distance time graph so if it is a straight line velocity is constant so acceleration will be ZERO.It was moving up the hill so GPE was increasing.Velocity and mass were constant so it was ke as constant.Velocity was constant so resultant was zero.And that loss gain thing is when objects fall from a certain height.

hmm.

 

[potterfan97]

Firstly it was a distance time graph so if it is a straight line velocity is constant so acceleration will be ZERO.It was moving up the hill so GPE was increasing.Velocity and mass were constant so it was ke as constant.Velocity was constant so resultant was zero.And that loss gain thing is when objects fall from a certain height.

yes it was a distance-time graph therefore gradient was speed. Constant speed=zero acceleration. I chose the kinetic energy option

 

[Ram97]

yes it was a distance-time graph therefore gradient was speed. Constant speed=zero acceleration. I chose the kinetic energy option

We had to draw a speed time graph. Speed and time were labelled on its respective axis

 

[Dark Destination]

We had to draw a speed time graph. Speed and time were labelled on its respective axis

Which question?

 

[Ram97]

Which question?

Sec B Q.9

 

[Dark Destination]

Sec B Q.9

What did you write for the last part of this question?

 

[Ram97]

What did you write for the last part of this question?

The experiment??

 

[Dark Destination]

The experiment??

Yes.

 

[Ram97]

I wrote measure the middle distance and time. Then make three intervals and measure the distance and time for each interval. Calculate speed for each interval, if it is same the speed is constant.

 

[potterfan97]

The reed switch question in MCQ what was the answer?

 

[DaniyalK]

Increase voltage of Q

 

[Ram97]

Conductor Insulator one was it aluminium and rubber

 

[FLRNAB]

How was the graph for V/I of Filament?

Conductor Insulator one was it aluminium and rubber

Yes

 

[DaniyalK]

It had a decreasing gradient.

 

[FLRNAB]

It had a decreasing gradient.

Starting from Origin to 0.25A and 12 V?