Physics 9702 P21

[Autumngirl]

I hope the current was 24.
What were the direction of the arrows in the first question?

How did you get 24?

 

[Mohamed1212]

How did you get 0.5?

By being stupid.

 

[saqib.tariq]

How did you get 24?

I=V/R

 

[saqib.tariq]

correct answer is 3 :/ i guess

By being stupid.

 

[cookiemonster96]

I did opposite direction. :'/
It's wrong

 

[Autumngirl]

I=V/R

What values? I got 6 with e=Ir+IR

 

[Mohamed1212]

correct answer is 3 :/ i guess

I got 0.5 by that seemed wrong so I crossed it.

 

[Mohamed1212]

I did opposite direction. :'/
It's wrong

What opposite direction?

 

[cookiemonster96]

I=V/R

So you found I first? Im sure 3 is correct

What values? I got 6 with e=Ir+IR

All my friends got 6 A but it said BATTERY so shouldnt we have used the internal reaistance?

 

[Autumngirl]

So you found I first? Im sure 3 is correct

All my friends got 6 A but it said BATTERY so shouldnt we have used the internal reaistance?

One of my friends did get 24 but I didnt ask her values and method. Tell me yours.

 

[cookiemonster96]

What opposite direction?

I made the arrow for deceleration backwards which is correct but for resultant force O made it forward I think that is wrong

 

[areebaization]

So you found I first? Im sure 3 is correct

All my friends got 6 A but it said BATTERY so shouldnt we have used the internal reaistance?

I got 6A after considering the internal resistance :S

 

[cookiemonster96]

One of my friends did get 24 but I didnt ask her values and method. Tell me yours.

I did 12 V divided by internal resistance 0.5 cause it asked current in the battery!

 

[Mohamed1212]

Wh

I made the arrow for deceleration backwards which is correct but for resultant force O made it forward I think that is wrong

what was the acceleration and distance?

 

[areebaization]

I made the arrow for deceleration backwards which is correct but for resultant force O made it forward I think that is wrong

shouldn't acceleration and resultant force be in the same direction?

 

[cookiemonster96]

shouldn't acceleration and resultant force be in the same direction?

Apparently yes

 

[cookiemonster96]

How did you find the Power for the lorry? And the suggestions part? :|

 

[areebaization]

what value for power did you guys get in the truck question?

One of my friends did get 24 but I didnt ask her values and method. Tell me yours.

 

[Mohamed1212]

what value for power did you guys get in the truck question?

Resultant= mgsin(9)*velocity. Which is 32.0kW.

 

[areebaization]

Resultant= mgsin(9)*velocity. Which is 32.0kW.

yay! I did it in the last second! had no time to think! so glad i didnt use cos function lol
and what about the next suggestion part which was for 2 marks?