Hello
my teacher said that percentage uncertainty is a measure of precision and percentage difference a measure of accuracy.
i thought it's the other way round??
say if i have 20%
and 80%
what do these values tell me in terms of precision and accuracy?
A mass between 2 springs moves with shm.
it oscillates between 2 points 5cm apart and completes 40 oscillations in 1min
whats its max speed?
Please help i always get the wrong answer
The answer is 0.44 but why?
Does it mean that when the percentage uncertainty gets bigger the accuracy gets bigger while I am doing the experiment?
And how do you know that I have a wider range of results?
Does the percentage difference have any effect on the accuracy?
Thanks for your effort but I don't really understand that. :(
I still don't know if percentage uncertainty is a measure of accuracy?
And how do percentage uncertainty and percentage difference affect the accuracy of an experiment?
hello
I have some questions which I was struggeling with
1. Is percentage error the same as percentage uncertainty?
Because percentage error is a measurement of accuracy and is percentage uncertainty also a measure of accuracy?
2. How do percentage uncertainty and percentage difference affect...
Ok I understand what you are saying but can you also answer the last bit of my question with the calculation please :)
And does 0.550 actually have 2 or 3 sf?
And how do I know that 0.2 is an exact known number- this value is just given in the equation ?
thanks
When you say 0.6 is an exact known number is that the same as saying it's a constant?
And are you trying to tell me that a constant doesn't affect the final result ?
Am i right?
If I would have this example:
(0.333)(0.550)/0.2
where 0.2 is the value already given in the...
sorry to ask again but is it right what I have understood so far.
When I 've got y=0.6zx then you get x=y/0.6z
At school we measured y and z to 3 sf. So does it mean that 0.6 is kind of a constant value and it doesn't affect the value of x which I am trying to work out? Because I didn't work...
Oh I think I understand .
But say the equation was y=0.6zx
so x= y/0.6z
x and y are given to 3 s.f
But the 0.6 is just given to 1 s.f.
will x still have 3 s.f. or does the 0.6 affect the number of s.f of x?
thanks but that's not actually what i mean with my x- value.
the x value was an unknown in an equation and i had to work out this x value.
it represents the mass of a mug.
then after i have made the x value the subject of my equation they ask me that question which i have written in my first...
hi we did an experiment at school and in my homework i am asked to justify the number of significant figures for x.
what do they mean with justify here? i don't understand the question.
my x value has 3 s.f.
thanks in advance
I know what terminal v is I am just confused because here you say that the terminal v decreases but in the previous post you said it's just normally accelerating downwards.
Sorry but can you maybe explain that again?
:blushing: