help in physics 34

[meobunny]

Mine one did support :O as length decreased so did the velocity :O i am dead if that is wrong :O and reat same as mine except that my diameter was 5

 

[Ikram Khaliq]

Mine one did support :O as length decreased so did the velocity :O i am dead if that is wrong :O and reat same as mine except that my diameter was 5

it does not matter whether yours was supported or not. depends on the errors in your experiment and your justification as to why it was or was not supported.
Yup, my reading decreased as well and for two of my friends as well. but some people on another forum are saying it had to increase. :/

 

[meobunny]

Everyone in my centersa id it was decreasing

 

[Ikram Khaliq]

Everyone in my centersa id it was decreasing

and for most of us as well.

 

[meobunny]

Yaay. Bas lets pray to Allah that all of us get A*'s

 

[Binod Shakya]

Gradient= 3.something
Y-intercept= -4.something
Diameter= 0.375 cm
Suggested relationship not supported (percentage uncertainty in the values of k= 24%, criterion= 15%)

same result as mine
velocity increased as i cut the pipe
am i wrong??

 

[Ikram Khaliq]

same result as mine
velocity increased as i cut the pipe
am i wrong??

I don't know. I think my velocity decreased

 

[Jinkglex]

my gradient was coming out at several hundreds and my relationship was not supportive. My speed was 84cms-1 for uncut, 70cms-1 for cut. Also, for Q1, i had 3 points not on my straight line and 3 on, is that alright? and my y-intercept was coming out to be -1.7

 

[Ikram Khaliq]

my gradient was coming out at several hundreds and my relationship was not supportive. My speed was 84cms-1 for uncut, 70cms-1 for cut. Also, for Q1, i had 3 points not on my straight line and 3 on, is that alright? and my y-intercept was coming out to be -1.7

it almost correct! did you use 'cm' in drawing the x-axis? If yes, your gradient must be right. + they check your gradient and y-intercept according to your own graph. y-intercept was negative, so no need to worry. my velocity was also decreasing. and the line of best fit should have a balance of points about it. if it does not, you only lose one mark for it.

 

[Jinkglex]

yes I did because they never specified to use meter or cm ;/ thanks though, you really cheered me up there!

it almost correct! did you use 'cm' in drawing the x-axis? If yes, your gradient must be right. + they check your gradient and y-intercept according to your own graph. y-intercept was negative, so no need to worry. my velocity was also decreasing. and the line of best fit should have a balance of points about it. if it does not, you only lose one mark for it.

 

[Phoenix12]

and for most of us as well.

Yes it was decreasing... they were directly proportional no? v^2=kl

 

[Phoenix12]

my gradient was coming out at several hundreds and my relationship was not supportive. My speed was 84cms-1 for uncut, 70cms-1 for cut. Also, for Q1, i had 3 points not on my straight line and 3 on, is that alright? and my y-intercept was coming out to be -1.7

You are right gradient was around 300

 

[Binod Shakya]

my gradient was coming out at several hundreds and my relationship was not supportive. My speed was 84cms-1 for uncut, 70cms-1 for cut. Also, for Q1, i had 3 points not on my straight line and 3 on, is that alright? and my y-intercept was coming out to be -1.7

i think points all come under the line of best fit

 

[Binod Shakya]

You are right gradient was around 300

i think u didnt convert cm to m
Did u?
What was ur unit for gradient?

 

[Phoenix12]

i think u didnt convert cm to m
Did u?
What was ur unit for gradient?

Yes i didnt convert... but if u converted then it will be different so dont worry

 

[Binod Shakya]

Yes i didnt convert... but if u converted then it will be different so dont worry

i think ur gradient around 300 is very right buddy

 

[Phoenix12]

:

i think ur gradient around 300 is very right buddy