You are Here: Home

# National 5 Physics 2015-2016

Announcements Posted on
Four hours left to win £100 of Amazon vouchers!! Don't miss out! Take our short survey to enter 24-10-2016
1. Thank you
2. (Original post by A+Hunter)
From the Marking schemes the SQA like things with decimals in them lol So I'd go with 2.5 However I can't see why they'd mark you down for the other one
Hahahaha okay phew! My spree of silly questions had ended until further notice
3. (Original post by Ethan100)
Thank you
(Original post by sameehaiqbal)
Hahahaha okay phew! My spree of silly questions had ended until further notice
According to the course notes:

In carrying out calculations and using relationships to solve problems, it is important to giveanswers to an appropriate number of significant figures. This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation.

Learners should be familiar with the use of scientific notation and this may be used asappropriate when large and small numbers are used in calculations.
4. "This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation."

Okay I'm lost again
5. If I put all my final answers to calculations at standard of 3 significant figures, am I following what it says above ?
6. (Original post by Ethan100)
"This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation."

Okay I'm lost again
Okay I'll try to explain again :P

Take this question from the 2014 as an example:

The worker has a mass of 80·0 kg and on a particular day absorbs7·2 mJ of energy from the X-ray machine.
Calculate the absorbed dose received by the worker.

So D=E/m
D= 7.2x10-3/80
D = 8.75x10-5

You shouldn't leave you answer as this, Because the max number of sig figs in the question is 2 (7.2x10-3)

7. (Original post by A+Hunter)
Okay I'll try to explain again :P

Take this question from the 2014 as an example:

The worker has a mass of 80·0 kg and on a particular day absorbs7·2 mJ of energy from the X-ray machine.
Calculate the absorbed dose received by the worker.

So D=E/m
D= 7.2x10-3/80
D = 8.75x10-5

You shouldn't leave you answer as this, Because the max number of sig figs in the question is 2 (7.2x10-3)

Okay I think I understand it now, Hopefully I remember to check the numbers for the exam on Tuesday :P Thanks for helping me !!
8. (Original post by Ethan100)
Okay I think I understand it now, Hopefully I remember to check the numbers for the exam on Tuesday :P Thanks for helping me !!
Np.

Most the time they'll give you nice easy rounding ones so don't worry too much
9. Thank you !!!!
What's everyone revising right now?
10. (Original post by sameehaiqbal)
Thank you !!!!
What's everyone revising right now?

Doing waves right now, Amplitude,Wavelength, Frequency that stuff :P
11. (Original post by Ethan100)

Doing waves right now, Amplitude,Wavelength, Frequency that stuff :P
I'm still doing the stupid gas laws. Lol!

After this i'm going to watch the videos Yammy gave and memorise the circuit rules... Dreading it
12. (Original post by sameehaiqbal)
Thank you !!!!
What's everyone revising right now?
Doing Gas laws and power equations
13. What does everyone think will come up on Tuesday especially regarding the open ended questions?
14. I think nuclear radiation / some electricity question for the open-ended questions.. :P
15. (Original post by Ethan100)
What prefixes do we need to know ?
http://images.slideplayer.com/28/934...es/slide_8.jpg
16. Thank You
17. (Original post by Ethan100)
Thank You
The most common ones will be kilo, mega, milli and micro, However I'd still go over the ones that sameehaiqbal posted
18. (Original post by Ethan100)
Thank You

(Original post by A+Hunter)
The most common ones will be kilo, mega, milli and micro, However I'd still go over the ones that sameehaiqbal posted
Ignore the deci prefix but the rest are pretty much relevant
19. If you're having trouble remembering the prefix's theres great mnemonics on this website: https://www.mnemonic-device.com/phys...metric-system/
20. I've finally learnt the circuit rules !!!!!!!!!!!!!!!!!!!!!
Thank you .Jeff458 !!!!!!!!!!!!!!!!

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: August 27, 2016
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:
Today on TSR

### Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

### How to get a 1st class degree

Poll
Applying to university

Our tool will help you find the perfect uni course for you