HSC Physics Predictions / Thoughts (3 Viewers)

[black.mamba]

And for q20 pretty sure it’s a right?

 

[Speed’o’sound Sonic]

Whatever the left thingo was for q18

Danggggg I guessed the one on the right

 

[Speed’o’sound Sonic]

And for q20 pretty sure it’s a right?

Yeup

 

[ktbffh11]

Wym it was circular motion for q20. Constant magitude with the axis slightly skewed downwards. Since r was constant

yeah but because it wasn’t a horizontal plane mg affected it more and different spots - my teacher thinks it’s d as well

 

[Fabrizio]

mg varied tho ths

it was release of energy - if reactants weigh more than mass has been lost in the form of energy

I was meant say products wieghed more then reactants. I swear it said that

 

[ktbffh11]

Yeup

did the emf graph start at maximum or 0?

 

[Speed’o’sound Sonic]

yeah but because it wasn’t a horizontal plane mg affected it more and different spots - my teacher thinks it’s d as well

I can’t really remember the question. Guess I’ll cop that one though gg

 

[ktbffh11]

I was meant say products wieghed more then reactants. I swear it said that

I got reactants more than products - but if it is products more than you are right

 

[Tantrrsh]

So what was the answer for the projectile motion question? It was asking for the initial velocity

 

[black.mamba]

I can’t really remember the question. Guess I’ll cop that one though gg

Nah consensus seems to be a
Weight is constant

 

[Speed’o’sound Sonic]

So what was the answer for the projectile motion question? It was asking for the initial velocity

Like 37ms at 54 degrees to the horizontal

 

[Fabrizio]

What did you guys get for the horizontal distance and also for the motor/pully one did you relate the force of friction and force created by the torque of the motor to get the mathematical model

 

[Tantrrsh]

Like 37ms at 54 degrees to the horizontal

Oh crap

 

[Fabrizio]

Like 37ms at 54 degrees to the horizontal

Same

 

[black.mamba]

What did you guys get for the horizontal distance and also for the motor/pully one did you relate the force of friction and force created by the torque of the motor to get the mathematical model

Idk for the 7 marker I just said back emf as one factor and friction separately as another factor

 

[Time&moretime]

Hey, just a quick question, was the last question in the exam the electric field question with d and 2d and the horizontal distance. (I just want to make sure I didn't miss a question!)

 

[ktbffh11]

Like 37ms at 54 degrees to the horizontal

how did you derive the velocity of star B?

 

[ktbffh11]

Idk for the 7 marker I just said back emf as one factor and friction separately as another factor

me too - and I used T=niAB as a model and because it said model(s) I used the emf formula as another one

 

[Tantrrsh]

Yes, how were you meant to derive that velocity for B?

 

[black.mamba]

how did you derive the velocity of star B?

Equate centripetal with grav as both stars on the same circle
Gotta remember r in centripetal is x/2 and r in grav is x, I forgot this so rip