Physics: Post your doubts here!

[anastasia grey113]

btw what was the %age uncertainty?

i did it like
(0.5+0.5)/5 x 100% so i got 20% since my reading was 5mm

 

[amina1300]

btw what was the %age uncertainty?

i did it like
(0.5+0.5)/5 x 100% so i got 20% since my reading was 5mm

I dont recall the 5 mm reading which Question was this.

 

[anastasia grey113]

I dont recall the 5 mm reading which Question was this.

question 2
this was x-y i calculated

 

[amina1300]

question 2
this was x-y i calculated

You mean y-x right

 

[anastasia grey113]

You mean y-x right

lol yes
overall it was an easy paper
except for that errors n improvements part

 

[amina1300]

You mean y-x right

I got the percentage uncertainty in both values y and x separately and added them, was this wrong ?

 

[anastasia grey113]

I got the percentage uncertainty in both values y and x separately and added them. Is this wrong ?

but that methods for two values which multiply or divide...isn't it?

 

[amina1300]

lol yes
overall it was an easy paper
except for that errors n improvements part

yeah I guess one of mine was invalid too.

 

[anastasia grey113]

yeah I guess one of mine was invalid too.

what did u write?

 

[amina1300]

but that methods for two values which multiply or divide...isn't it?

I dont know but I used 2 (0.1) / values i got ( in cm).

 

[anastasia grey113]

I dont know but I used 2 (0.1) / values i got ( in cm).

for ruler absolute certainty is 0.5mm
n units should be the same so i converted cm value to mm

 

[amina1300]

what did u write?

Length of the strings. --> equal
more readings and graph.

 

[anastasia grey113]

Length of the strings. --> equal
more readings and graph.

but weren't they equal already?
n that graph one is definitely correct

 

[amina1300]

i

for ruler absolute certainty is 0.5mm
n units should be the same so i converted cm value to mm

Its 1 mm actually.

 

[anastasia grey113]

i

Its 1 mm actually.

idk i asked someone
she said its 0.5 mm

 

[amina1300]

but weren't they equal already?
n that graph one is definitely correct

I wrote ensure they were equal because it wasnt mentioned and the others I kinda forgot..

 

[amina1300]

s

idk i asked someone
she said its 0.5 mm

search it up

 

[anastasia grey113]

sensitivity is 1mm
minimum error is 0.5mm
n minimum error is what v use here

 

[anastasia grey113]

I wrote ensure they were equal because it wasnt mentioned and the others I kinda forgot..

ohh okay
but that can be a valid point

 

[anastasia grey113]

s

search it up

searched it
its 0.5mm
but 1 is also written somewhere