Turn on thread page Beta
 You are Here: Home >< Physics

# Edexcel IAL Physics Unit 03 WPH03 - 10th of May, 2017 watch

1. (Original post by Ackashh05012911)
For questions like these, they usually give a huge range or they'll give mark if the power is correct. So let's hope your answer is in their range

Yea lets Hope for the best
2. (Original post by AdemN)
Percentage uncertainty was 1.7%
I got 1.67%
3. For the last question, I have plotted the graph using dots. Will I get some marks deducted because of this? I am now doing some past paper of paper 6 and they said candidates should use cross.....
4. (Original post by FutureStripper)
I don't think so. I drew a standing wave with nodes and antinodes labelled and a line from 2 antinodes showing the distance between them is half lambda. Since it is at antinodes that constructive interference occurs.
I have drawn a wave with 2 nodes and labelled one half lambda. Do you think I would get any marks from this question?
5. Guys I have a question, you know they gave the chart with 6 values and they said critisize the results, I put ;

Inconsistent significant figures,
Too few vaules,
Short range.

Will I get the points because on all other papers these always got full marks but this chart had slightly more values than the others.
6. (Original post by AdemN)
Guys I have a question, you know they gave the chart with 6 values and they said critisize the results, I put ;

Inconsistent significant figures,
Too few vaules,
Short range.

Will I get the points because on all other papers these always got full marks but this chart had slightly more values than the others.
You can't say too few values cuz 6 values are more than enough to plot a graph
7. (Original post by Ackashh05012911)
You can't say too few values cuz 6 values are more than enough to plot a graph
But is that according to a graph or according to a experiment as a whole, because for an experiment 6 values are definiatly not enough and It would be much better to use lots more weights, taking into account that the chart jumps from 600g to 1100g so theres a gap which could be filled with 700, 800g etc.

I really hope I dont lose marks
8. (Original post by AdemN)
But is that according to a graph or according to a experiment as a whole, because for an experiment 6 values are definiatly not enough and It would be much better to use lots more weights, taking into account that the chart jumps from 600g to 1100g so theres a gap which could be filled with 700, 800g etc.

I really hope I dont lose marks
I also didnt write this point due to the reason that there were enough values to plot a graph but Dw who knows maybe u might get marks for it
9. (Original post by AdemN)
But is that according to a graph or according to a experiment as a whole, because for an experiment 6 values are definiatly not enough and It would be much better to use lots more w eights, taking into account that the chart jumps from 600g to 1100g so theres a gap which could be filled with 700, 800g etc.

I really hope I dont lose marks
Most experiments use a graphical method and measurements are usually tabulated if a graph is gonna plotted. Every past paper has a question where you have to criticize a table of readings. And mostly they give less than 5 readings so that students can write a critic that there are less values to plot a graph
10. (Original post by Ackashh05012911)
Most experiments use a graphical method and measurements are usually tabulated if a graph is gonna plotted. Every past paper has a question where you have to criticize a table of readings. And mostly they give less than 5 readings so that students can write a critic that there are less values to plot a graph
Does anyone know a past paper with more than more than 5 readings?
11. Yep I checked june 2015 has 6 values and they dont have too few values and they said dont except JUST short range. Ive lost 2 points for nothing unfortunately.
12. What did you guys write for the instrument to measure diameter of a sphere? I think that was question 4 or 5 in multiple choice and they were using it to measure viscosity. I used a micrometer, although many of my classmates said verniers.
13. (Original post by Dancin9Donuts)
What did you guys write for the instrument to measure diameter of a sphere? I think that was question 4 or 5 in multiple choice and they were using it to measure viscosity. I used a micrometer, although many of my classmates said verniers.
Micrometer 👍
14. (Original post by Dancin9Donuts)
What did you guys write for the instrument to measure diameter of a sphere? I think that was question 4 or 5 in multiple choice and they were using it to measure viscosity. I used a micrometer, although many of my classmates said verniers.
I said vernier caliper.
15. (Original post by wyzzl)
I said vernier caliper.
Lol.. You won't get marks for that
16. (Original post by mandax_25)
Lol.. You won't get marks for that

I was not sure about the answer but found that on google..........
17. (Original post by wyzzl)

I was not sure about the answer but found that on google..........
Hmmm... Usually they give marks for micrometer screw gauge, for that particular experiment because the ball bearings halve a very small diameter.
18. (Original post by mandax_25)
Hmmm... Usually they give marks for micrometer screw gauge, for that particular experiment because the ball bearings halve a very small diameter.
we have used a ball bearing which is very small as we need laminar flow in the tube.....
so to measure diameter of a small ball , we need a more precise instrument .
so micrometer was the answer....
19. hey guyz for the anti nodes question ,
i drew like this , so is it correct, any suggestions..
Attached Images

20. (Original post by Helper OF ALL)
hey guyz for the anti nodes question ,
i drew like this , so is it correct, any suggestions..
Yeah it's correct. I did the same thing

Turn on thread page Beta

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: June 27, 2017
Today on TSR

### Exam Jam 2018

Join thousands of students this half term

### Solo - A Star Wars Story

Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE