How was Physics 6PH08 Alternative to practical ?

[Choco<3]

I wrote light intensity, do it in the dark room to ensure the only light source is the bulb, makes sense?
I don't remember the gradient at all It was point something

Yay!!!!! Even i wrote the same answer...Ditto..i hope thts correct.

 

[Choco<3]

1.?? 1. something??

1.2 ?? Plz gimme some hope ...

 

[Choco<3]

 

[toxic]

how does measuring diameter of a coin at different points improve accuracy????
nyone else??

 

[toxic]

1.2 ?? Plz gimme some hope ...

Yes I got 1.12

 

[toxic]

wat was the %uncertainity u got in the first question??
%uncertainity of the diameter was zero??

 

[Outofideaz]

I really don't remember, damn it! Well insha Allah it'll be right, by the way what did you get the resonant frequency from the graph? And how to make it accurate? Plus, what happens when the frequency from the generator is same as the natural frequency?

 

[Choco<3]

wat was the %uncertainity u got in the first question??
%uncertainity of the diameter was zero??

I dnt remeber exactly..what was urs..?? I forgot..

 

[Choco<3]

I really don't remember, damn it! Well insha Allah it'll be right, by the way what did you get the resonant frequency from the graph? And how to make it accurate? Plus, what happens when the frequency from the generator is same as the natural frequency?

The mass vibrates with a maximum amplitude..i guess.

 

[Choco<3]

I really don't remember, damn it! Well insha Allah it'll be right, by the way what did you get the resonant frequency from the graph? And how to make it accurate? Plus, what happens when the frequency from the generator is same as the natural frequency?

Wht did u write?

 

[toxic]

I dnt remeber exactly..what was urs..?? I forgot..

hmmmmmmmm 7.9 or 1.9 lol cant remember exactly

 

[Choco<3]

hmmmmmmmm 7.9 or 1.9 lol cant remember exactly

1.25% ?? Anyone?

 

[toxic]

I really don't remember, damn it! Well insha Allah it'll be right, by the way what did you get the resonant frequency from the graph? And how to make it accurate? Plus, what happens when the frequency from the generator is same as the natural frequency?

1.6hz
How to improve it?
Time about 20 oscillations when it is vibrating with max amplitude and find the frequency. repeat the process 5 times and take avarage of it

 

[Outofideaz]

The mass vibrates with a maximum amplitude..i guess.

I wrote amplitude increases, hope they treat it as the same
For the diameter, since it was all 25.9 measured with a vernier, so I took the estimated uncertainty for one reading (0.1), and it had to be multiplied with 2. It was three marks so I doubt it should be zero, not sure!

 

[Choco<3]

1.6hz
How to improve it?
Time about 20 oscillations when it is vibrating with max amplitude and find the frequency. repeat the process 5 times and take avarage of it

1.6 hz is right. The other part seems right as well...DARN!! I didnt write about timing 20 oscillations...but I did write about repeating and taking an average.. can i gain a mark for tht??

 

[Choco<3]

I wrote amplitude increases, hope they treat it as the same
For the diameter, since it was all 25.9 measured with a vernier, so I took the estimated uncertainty for one reading (0.1), and it had to be multiplied with 2. It was three marks so I doubt it should be zero, not sure!

The percentage uncertaini for a vernier caliper is 0.01 mm.

 

[Outofideaz]

1.6hz
How to improve it?
Time about 20 oscillations when it is vibrating with max amplitude and find the frequency. repeat the process 5 times and take avarage of it

Thanks, I think I mentioned that. After joining all the points in the graph I got it as 1.66 Hz.

 

[Choco<3]

The percentage uncertaini for a vernier caliper is 0.01 mm.

We always have to consider 0 error..

 

[toxic]

1.6 hz is right. The other part seems right as well...DARN!! I didnt write about timing 20 oscillations...but I did write about repeating and taking an average.. can i gain a mark for tht??

not sure....

 

[Outofideaz]

Nope, for metre rule 1 mm, vernier 0.1 mm and micrometer screw gauge 0.01 mm.