Physics exam 31 came from heeeeeel!!!!! What is wrong CIE

[Ahmooosh]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

haha , i answered that in the last 10 sec , put gradient on top / a random value from the graph ( to do with acc )

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

You guys! The gradient was the mass since Mass = Force/Acceleration which was the gradient! The gradient was Force/Acceleration which equals MASS. It took me 5 minutes to think of that. I couldn't get it the 1st time, the 2nd time, or the 3rd. I kept going over the test millions of times until I forced myself to get the answer to that question. I had a sharp look at the Force = Mass x Acceleration and the graph which was what I used for the gradient (which was (y2-y2)/(x2-x1) OR (change in Force)/(change in Acceleration)). When I noticed that I quickly thought to myself, oh wait a minute, NOW I GET IT. If the gradient was Force/Acceleration then it must be Mass, so I used the gradient value (which was I think 5.71) for the Mass.
I hope you get what I'm trying to say.

 

[Ahmooosh]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

You guys! The gradient was the mass since Mass = Force/Acceleration which was the gradient! The gradient was Force/Acceleration which equals MASS. It took me 5 minutes to think of that. I couldn't get it the 1st time, the 2nd time, or the 3rd. I kept going over the test millions of times until I forced myself to get the answer to that question. I had a sharp look at the Force = Mass x Acceleration and the graph which was what I used for the gradient (which was (y2-y2)/(x2-x1) OR (change in Force)/(change in Acceleration)). When I noticed that I quickly thought to myself, oh wait a minute, NOW I GET IT. If the gradient was Force/Acceleration then it must be Mass, so I used the gradient value (which was I think 5.71) for the Mass.
I hope you get what I'm trying to say.

Makes sense! good job

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

You guys! The gradient was the mass since Mass = Force/Acceleration which was the gradient! The gradient was Force/Acceleration which equals MASS. It took me 5 minutes to think of that. I couldn't get it the 1st time, the 2nd time, or the 3rd. I kept going over the test millions of times until I forced myself to get the answer to that question. I had a sharp look at the Force = Mass x Acceleration and the graph which was what I used for the gradient (which was (y2-y2)/(x2-x1) OR (change in Force)/(change in Acceleration)). When I noticed that I quickly thought to myself, oh wait a minute, NOW I GET IT. If the gradient was Force/Acceleration then it must be Mass, so I used the gradient value (which was I think 5.71) for the Mass.
I hope you get what I'm trying to say.

Makes sense! good job

Thanks

 

[WayneRooney10]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

@Ahmooosh
Yep, you'll get 1.1 cm3 for the bubble volume but what about the following question?
I wrote that the calculated volume is less than the actual.

HELL YEAH BRO!!! 1.1cm3 !! Wohoooo!!

 

[WayneRooney10]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

@unplugged
yep it's 11 ladder rungs ^^

yeaaaaah!!! 11 rungs!!!

 

[unplugged]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

Makes sense! good job

That's the same thing i said early on . Well , confirmation is nice anyways.

 

[Divalicious]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

@Yoyo1994
Correct me if I'm wrong but, you're saying they're giving us 2 marks to write what we already calculated in another question? And they even said 'use your value for the gradient' I don;t think they meant copy the exact thing here again xD

 

[unplugged]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

I did the same dival. I know it's weird , but i can't think of any other way. the calculation of the mass from the values in the table produced un even mass. And of course there was initial static friction to consider which would mean that we're taking into account the force of friction as if it was Mass. But the gradiant subtracted that force then got the remaining force divided by the acceleration which accounts for mass only , not friction.
And the reason that the mass was uneven (it should have been , even with friction) is probably because of bad measurement , that's why the best fit line is good here , because this way we get the average calculated.

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

@Yoyo1994
Correct me if I'm wrong but, you're saying they're giving us 2 marks to write what we already calculated in another question? And they even said 'use your value for the gradient' I don;t think they meant copy the exact thing here again xD

Yeah looool

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

Makes sense! good job

That's the same thing i said early on . Well , confirmation is nice anyways.

Oh you did? I'm sorry if you got pissed...

 

[Divalicious]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

I actually did both myself. In the answer area I wrote the gradient again.
But in the 'working' area I calculated mass using F=ma from one of the values in the table. Will I get the mark? xD

 

[WayneRooney10]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

hey guys what did you get for the resistance for the variable resistor?

 

[Divalicious]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

Calculate it using the voltage given in text not drawing. Can't remember.
And about the optic fibre stomach illumination stuff, is that stuff even in our syllabus/books?

 

[unplugged]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

I wrote it was shiny . Wrote it while the invigilator was pulling the paper from me. I think the stomach is either dark except for a certain point or the light coming from the fibre optic is being reflected inside and illuminated shit.

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

Calculate it using the voltage given in text not drawing. Can't remember.
And about the optic fibre stomach illumination stuff, is that stuff even in our syllabus/books?

No. No, No, No, No and No. This test was messed up. Most didn't come on the syllabus. :x :x :x :x :x EXAMINERS :x :x :x :x :x
It's not fair! =@

 

[WayneRooney10]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

I wrote it was shiny . Wrote it while the invigilator was pulling the paper from me. I think the stomach is either dark except for a certain point or the light coming from the fibre optic is being reflected inside and illuminated shit.

lol! I said that the stomach reflected the light back!

 

[Divalicious]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

Well overall I think the exam wasn't bad as everyone thinks. My whole class was kinda depressed and I was the only one happy about it lol.
Perhaps cuz it was more of my type of exams, more calculations less explanations

 

[Yoyo1994]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

What else is there to talk about/discuss? It was a 20 page test and I can't remember anything that was on there! I don't know what is wrong with me. When someone talks about something I begin to remember...

 

[Divalicious]

Re: Physics exam 31 came from heeeeeel!!!!! What is wrong CI

The tsunami/earthquake xD
I calculated (time for tsunami to reach shores) - (time of earthquakes to reach shores)