HI FREINDS HOW WAS THE PHYSICS ATP GCSE O LAVEL?

[Ram97]

i wrote kay u leave the rod to float and then clamp it to take readings with the help of a rule

 

[Dark Destination]

what did you wrote for why cant "l"be measured accurately?

Because water keeps moving, and rod keeps moving too, that is why it is difficult to align the rule with the rod.
Right or not?

What did you write in same identical rubbers reason?

 

[funky brat]

For question 1 part 1, I wrote that when we touch the rod with the measuring instrument it starts to move, so we had to keep it at a distance and measure the length which might induce paralllex error hence inaccurate.

 

[Ram97]

For question 1, part 2, I wrote that the rod is wrapped in cobalt chloride paper, that part that sinks becomes, pink, it is removed, measured with a ruler and wrote how to avoid parallex error. Is that correct?
Anyone?

Woah!!

 

[Dark Destination]

EVERYONE WROTE DIFFERENT ANSWERS!

Can a physics master over here tell which ones will be accepted? :c

 

[funky brat]

Woah!!

Is that correct?

 

[Ram97]

I wrote that keeps on floating vertivally so its difficult to measure its accurate length

 

[Dark Destination]

WHY USE IDENTICAL RUBBERS?

 

[waqas123]

I said to take it out and measure till the driest point by aligning with ruler. Difficulty in measurement because container walls would get into way. Ruler cannot be placed into container as it would be too wide.

 

[Abdul Hanan]

Because water keeps moving, and rod keeps moving too, that is why it is difficult to align the rule with the rod.
Right or not?

What did you write in same identical rubbers reason?

i wrote that container walls rise above water level so difficult to keep rule close to rod so more chances of error.....

 

[waqas123]

We have to see effect of number and not quality/weight.

 

[Ram97]

Is that correct?

I guess so

 

[Dark Destination]

I said to take it out and measure till the driest point by aligning with ruler. Difficulty in measurement because container walls would get into way. Ruler cannot be placed into container as it would be too wide.

Many people wrote that too.

But why can't ruler be placed? Do you know the exact diameter of the tube? Did you measure it? That was a diagram. We don't know the real value.

 

[waqas123]

What is range of last question? I wrote 2.2 because problem with my scale. Would that be inside the range? What do you guys think?

 

[Dark Destination]

What is range of last question? I wrote 2.2 because problem with my scale. Would that be inside the range? What do you guys think?

2.0

 

[haris jutt]

Can someone answer the question about number of rubber bands needed to sink the rod?

 

[Ram97]

WHY USE IDENTICAL RUBBERS?

for accurate measurement
they all go into same depth of water

 

[funky brat]

WHY USE IDENTICAL RUBBERS?

Because identical masses.

 

[Ram97]

Can someone answer the question about number of rubber bands needed to sink the rod?

11

 

[waqas123]

11

Can someone answer the question about number of rubber bands needed to sink the rod?