physics AS unit 3 discussion

[Madness]

the gradient can differ from one to another right ???????????? depends on the scale u take and the points right ?

 

[Paras]

I mean grade boundary for getting an A grade?? any ideas or guesses?

my best estimate would be 31

 

[Paras]

the gradient can differ from one to another right ???????????? depends on the scale u take and the points right ?

yeh it can differ but it must fall within a range edexcel sets up!! i got 173 as my gradeint so my v value was 346

 

[Paras]

http://www.thestudentroom.co.uk/showthread.php?t=2671823&page=8 refer to this thread

 

[Madness]

I made on Y axis 1000 1200 14000 thats why mine is large I got 275

 

[Madness]

I didnt convert it into m so actually it was 27500 they didnt ask to convert it

 

[YasminaEmara]

You'd lose one mark for not converting.. and the gradient was between 160 to 180.. as far as i know (from the people i asked)

 

[kcapfootball]

guys, for Q1 why is the answer 1.000m ? :/

 

[stacyersh]

guys, for Q1 why is the answer 1.000m ? :/

find the average of the 4 values and you get 999.75 mm (add them and divide by 4)
round to the 4 significant figures (because that is the precision of the given values) and you get 1000 mm
divide by 1000 to get metres (ie 1m)
but you have to give the answer to 4 significant figures because that is the precision of the given values

 

[Ysph06]

Now we can discuss it I got a huge numbrr for the gradient and I didnt convert it into meter am i going to lose marks ? My scale was 0.02 0.04 on x axis and on y axis 1000 1200 1400 1600, and what about the first question which choice is it ? Is it A ?

I took the same scale as well, and you'll get a huge number for gradient if you take the x axis in cm..
gradient would be cm s^-1 in this case and you'd have to divide by 100 to change it into ms^-1, i guess. I'm not sure if it's a must to change to ms^-1, the question says to find gradient from your graph, regardless whether you take x axis in meters or cm

 

[marwan22]

what is the answer for the mcq that said which unit is not a unit of pressure, and what was the relation between the graph of v/i ?

 

[Madness]

Knm is the wrong wan therefore its the right choice, V/i linear relation

 

[Relon]

Guys i got gradient 169 and so my value for speed was 338 m/s, is it good?

 

[sidajmalh]

how many mark will i lose for giving gradient 157 and speed 314?

 

[Dee1Ess]

how many mark will i lose for giving gradient 157 and speed 314?

I got the same as you

 

[sidajmalh]

Let us hope for the best then :/