This discussion is now closed.
Check out other Related discussions
- School is killing me - Y11 "GYG" 2022
- A Level Physics OCR B : Where to start?
- A-level Exam Discussions 2024
- When does swansea uni move in, have freshers and start teaching
- gyg gcse 2024!
- OCR A-level chemistry practicals
- OCR GCSE Religious Studies Christian perspective J625/06 - 26 May 2022 [Exam Chat]
- 4 weeks Until 1st Year Med Exams
- GCSE Diary
- OCR A GCSE Physics Paper 2 (Foundation Combined) J250/06- 16th June 2023 [Exam Chat]
- Police Vetting Process
- ⭐niamhcheesecake's Yr 11 journal: help me conquer Gcse's :(( ⭐
- AS/A Level Chemistry Study Group 2023/2024
- Higher physics Galilean invariance and Newtonian relativity confusion
- Is the NEA (non examined assessment) part of a level physics assessment mandatory?
- A-Level books
- OCR A-level Further Mathematics A Statistics (Y542) - 14th June 2023 [Exam Chat]
- prediction classics 2024 and question on classics A level
- GCSE Exam Discussions 2023
- my study diary - gyg ‘24
OCR Physics A - G484: The Newtonian World - 18/06/12
Scroll to see replies
Original post by Holby_fanatic
Our teacher just told us to always do it in terms of the temperature remaining constant.
So if the pressure increases, for the temperature, and therefore kinetic energy, to remain constant, the volume must fall. Potential energy decreases and so the internal energy decreases.
This was posted from The Student Room's Android App on my GT-S5360
So if the pressure increases, for the temperature, and therefore kinetic energy, to remain constant, the volume must fall. Potential energy decreases and so the internal energy decreases.
This was posted from The Student Room's Android App on my GT-S5360
Volume doesn't affect internal energy. The internal energy is the sum of both potential and kinetic. As volume decreases/ pressure increases the loss in potential energy is converted to kinetic energy. If decreasing the volume of a gas made the internal energy lower you would be destroying energy, and this isn't what happen.
Am I missing something?
Original post by 4 Mathlete the win
Volume doesn't affect internal energy. The internal energy is the sum of both potential and kinetic. As volume decreases/ pressure increases the loss in potential energy is converted to kinetic energy. If decreasing the volume of a gas made the internal energy lower you would be destroying energy, and this isn't what happen.
Am I missing something?
Am I missing something?
I agree with you here, I think they are getting Volume and Mass muddled up, by decreasing volume you are increasing the mass per m^3 so the pressure increases. By decreasing mass you are decreasing binding enery (g485) e=mc^2
Original post by sarah-xx
Should have noticed that they said total momentum & not just Kinetic!
That helped a lot. Thanks you
That helped a lot. Thanks you
I thought momentum was always conserved in an inelastic or elastic collision :/
Original post by Beresford George
I thought momentum was always conserved in an inelastic or elastic collision :/
It is, total momentum and total energy are always conserved regardless of whether or not the collision is elastic or inelastic.
Original post by Beresford George
I thought momentum was always conserved in an inelastic or elastic collision :/
The question doesn't ask if momentum is conserved, it asks if the 2 object have the same momentum. It's badly worded.
Original post by Picture~Perfect
It is, total momentum and total energy are always conserved regardless of whether or not the collision is elastic or inelastic.
Ah good. So in an elastic collision it is just kinetic energy that is not conserved.
Original post by Beresford George
Ah good. So in an elastic collision it is just kinetic energy that is not conserved.
No.
'Perfectly' elastic collision:
The kinetic energy of the system remains constant. Total energy and total momentum are also conserved.
'Perfectly' inelastic collision:
The total kinetic energy is not conserved. Total energy and total momentum are conserved.
Original post by Picture~Perfect
No.
'Perfectly' elastic collision:
The kinetic energy of the system remains constant. Total energy and total momentum are also conserved.
'Perfectly' inelastic collision:
The total kinetic energy is not conserved. Total energy and total momentum are conserved.
'Perfectly' elastic collision:
The kinetic energy of the system remains constant. Total energy and total momentum are also conserved.
'Perfectly' inelastic collision:
The total kinetic energy is not conserved. Total energy and total momentum are conserved.
I meant to write inelastic. My bad.
Original post by crazy1234
This is going to sound very stupid, but what exactly is an ideal gas?
It's a concept used to describe a gas, the term ideal is used as certain assumptions are made. However at standard temperature and pressure most gases behave as an ideal gas.
Can I get a list of all the wordy essay type questions with model answers?
This was posted from The Student Room's iPhone/iPad App
This was posted from The Student Room's iPhone/iPad App
Original post by Shahman123
Can I get a list of all the wordy essay type questions with model answers?
This was posted from The Student Room's iPhone/iPad App
This was posted from The Student Room's iPhone/iPad App
Surely it would be quicker to look at past paper essay questions and the mark schemes?
Besides there are notes on the first post of this thread.
Original post by stunnaman
Pictureperfect your gonna smash thhis exam arent u lol
I'd like to think so XD
Original post by Picture~Perfect
I'd like to think so XD
90/90 UMS right?
Original post by Picture~Perfect
Surely it would be quicker to look at past paper essay questions and the mark schemes?
Besides there are notes on the first post of this thread.
Besides there are notes on the first post of this thread.
Alright can I just just get a list of topics quickly LOL without the model answers, and I know what's on the first post it's my thread haha!
This was posted from The Student Room's iPhone/iPad App
Original post by Shahman123
Alright can I just just get a list of topics quickly LOL without the model answers, and I know what's on the first post it's my thread haha!
This was posted from The Student Room's iPhone/iPad App
This was posted from The Student Room's iPhone/iPad App
Any ideas which topic may be chosen for the synoptic question?
Original post by Jukeboxing
90/90 UMS right?
I don't know if I will get full UMS, it would be nice though
Original post by Shahman123
Alright can I just just get a list of topics quickly LOL without the model answers, and I know what's on the first post it's my thread haha!
This was posted from The Student Room's iPhone/iPad App
This was posted from The Student Room's iPhone/iPad App
Sorry, I didn't realise it was your thread XP
You want possible essay questions right?
Describe an experiment to show brownian motion. Discuss the evidence for the movement of particles provided by such experiment.
State the basic assumptions of the kinetic theory of gases.
Describe an electrical experiment to determine the specific heat capacity of a solid or a liquid.
Describe simple examples of free oscillations.
Describe with graphical illustrations the changes in displacement, velocity and acceleration of simple harmonic motion.
Describe the effects of damping on an oscillating system.
Describe an example where resonance is useful and an example where it is a hinderance.
Describe solids, liquids and gases in terms of the spacing, ordering and motion of atoms.
(edited 11 years ago)
Related discussions
- School is killing me - Y11 "GYG" 2022
- A Level Physics OCR B : Where to start?
- A-level Exam Discussions 2024
- When does swansea uni move in, have freshers and start teaching
- gyg gcse 2024!
- OCR A-level chemistry practicals
- OCR GCSE Religious Studies Christian perspective J625/06 - 26 May 2022 [Exam Chat]
- 4 weeks Until 1st Year Med Exams
- GCSE Diary
- OCR A GCSE Physics Paper 2 (Foundation Combined) J250/06- 16th June 2023 [Exam Chat]
- Police Vetting Process
- ⭐niamhcheesecake's Yr 11 journal: help me conquer Gcse's :(( ⭐
- AS/A Level Chemistry Study Group 2023/2024
- Higher physics Galilean invariance and Newtonian relativity confusion
- Is the NEA (non examined assessment) part of a level physics assessment mandatory?
- A-Level books
- OCR A-level Further Mathematics A Statistics (Y542) - 14th June 2023 [Exam Chat]
- prediction classics 2024 and question on classics A level
- GCSE Exam Discussions 2023
- my study diary - gyg ‘24
