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4
0
Los
03/08/2023
Physics
june 2017 physics paper 3 worked solutions
63
•
3 Aug 2023
•
Los
@los
I apologize, but I don't see a transcript provided to... Show more
Overall Summary This comprehensive guide covers nuclear decay equations, kinetic energy calculations in particle physics, and semiconductor behavior in magnetic fields. The content is structured to help students master these advanced physics concepts through detailed explanations and practical examples.
The process of nuclear decay involves complex transformations where unstable atomic nuclei emit particles to achieve stability. In the case of Uranium-238 decay, we observe a fascinating example of alpha decay.
Definition: Alpha decay is a type of radioactive decay where an atomic nucleus emits an alpha particle (two protons and two neutrons, identical to a helium nucleus).
When Uranium-238 undergoes alpha decay, it transforms into Thorium-234. This process can be represented through a detailed nuclear equation:
Example: ²³⁸U → ²³⁴Th + ⁴He 92 90 2
The kinetic energy released during this decay process follows conservation of momentum principles. Using the mass of the uranium nucleus (4.0 × 10⁻²⁵ kg) and the resulting thorium nucleus velocity (2.4 × 10⁵ m/s), we can calculate the alpha particle's kinetic energy in MeV.
Highlight: The complete decay chain from Uranium-238 to Lead-206 involves multiple steps, releasing a total of 14 particles (8 alpha particles and 6 beta particles).
Understanding how semiconductors behave in magnetic fields is crucial for modern electronics applications. When a semiconductor slice carries current in a magnetic field, interesting phenomena occur due to the interaction between moving electrons and the field.
Vocabulary: Drift velocity refers to the average velocity of charge carriers (electrons) in a conductor under the influence of an electric field.
The rectangular semiconductor slice experiences both electric and magnetic forces when placed in a uniform magnetic field. The magnetic force (F = Bev) acts perpendicular to both the current direction and magnetic field, while the electric force (F = eE) develops due to charge separation.
Example: For a semiconductor with dimensions a = 5.0mm and b = 0.20mm, carrying current I = 60mA in a magnetic field B = 0.080T, we can calculate both the drift velocity and resulting potential difference.
The relationship between current, charge carrier density, and drift velocity follows the equation I = nAev, where n is the number of conducting electrons per cubic meter.
These principles have significant applications in modern technology, from nuclear power generation to semiconductor devices. Understanding nuclear decay helps in radioactive dating and medical treatments, while semiconductor behavior in magnetic fields is crucial for developing sensors and electronic components.
Highlight: The Hall effect, demonstrated in the semiconductor example, is widely used in magnetic field sensors and position detection devices.
The calculations and concepts presented here form the foundation for more advanced studies in nuclear physics and semiconductor technology. Students should focus on understanding both the mathematical relationships and the underlying physical principles.
When working with electrical circuits, engineers and students often encounter "black box" scenarios where component arrangements are unknown. This detailed guide explores how to systematically identify unmarked terminals and internal circuit configurations using basic measurement techniques.
The experimental setup involves a sealed box containing two resistors (220Ω and 470Ω) and a wire connection, with four unmarked terminals. Using a 6.0V DC supply, a 100Ω external resistor, and a digital ammeter, we can determine the internal arrangement through careful testing and analysis.
Definition: A "black box" circuit is an enclosed system where internal components are hidden, but external terminals are accessible for testing and measurement.
The systematic identification process begins by measuring current flow between different terminal pairs. Since one terminal pair is connected by a wire, this connection will show minimal resistance and maximum current flow. The remaining terminals connect through the resistors in series, allowing us to identify their positions based on the measured current values using Ohm's Law.
To execute the experiment effectively:
Example: When testing terminals connected by the wire, the current reading will be significantly higher than terminals connected through resistors. For a 6.0V supply and 100Ω external resistor:
Understanding the relationship between voltage, current, and resistance is crucial for successful circuit analysis. When working with unknown configurations, systematic testing combined with theoretical calculations provides a reliable approach to circuit mapping.
The experimental process requires careful attention to measurement accuracy and proper connection techniques. When connecting the ammeter, ensure proper polarity and range selection to avoid damage to the instrument and obtain accurate readings. The external 100Ω resistor serves as both a current limiter and a reference point for calculations.
Highlight: Always begin testing with the lowest voltage setting and highest current range on measuring instruments to protect both the equipment and the circuit components.
Circuit analysis becomes more manageable by creating a detailed testing matrix. Record measurements between each possible terminal combination and analyze the patterns that emerge. The presence of parallel or series configurations will become apparent through the current measurements, allowing for accurate identification of terminal positions.
Vocabulary:
The final step involves verifying the identified configuration by comparing measured values with theoretical calculations. This verification ensures accuracy and provides confidence in the terminal identification process. Document all findings and include circuit diagrams showing the confirmed terminal arrangements and component positions.
Page 1: Exam Information and Instructions
This page outlines the essential examination details for OCR A Level Physics A (H556/03) Unified Physics paper. The examination is structured for a duration of 1 hour and 30 minutes with a total of 70 marks available.
Highlight: Students must use black ink for written responses and may use HB pencils for graphs and diagrams.
Definition: Quality of extended responses will be assessed in questions marked with an asterisk (*).
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Los
@los
I apologize, but I don't see a transcript provided to summarize. To generate an accurate and helpful summary, I would need the source transcript or content that needs to be analyzed. Once you share the transcript, I can:
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Overall Summary This comprehensive guide covers nuclear decay equations, kinetic energy calculations in particle physics, and semiconductor behavior in magnetic fields. The content is structured to help students master these advanced physics concepts through detailed explanations and practical examples.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The process of nuclear decay involves complex transformations where unstable atomic nuclei emit particles to achieve stability. In the case of Uranium-238 decay, we observe a fascinating example of alpha decay.
Definition: Alpha decay is a type of radioactive decay where an atomic nucleus emits an alpha particle (two protons and two neutrons, identical to a helium nucleus).
When Uranium-238 undergoes alpha decay, it transforms into Thorium-234. This process can be represented through a detailed nuclear equation:
Example: ²³⁸U → ²³⁴Th + ⁴He 92 90 2
The kinetic energy released during this decay process follows conservation of momentum principles. Using the mass of the uranium nucleus (4.0 × 10⁻²⁵ kg) and the resulting thorium nucleus velocity (2.4 × 10⁵ m/s), we can calculate the alpha particle's kinetic energy in MeV.
Highlight: The complete decay chain from Uranium-238 to Lead-206 involves multiple steps, releasing a total of 14 particles (8 alpha particles and 6 beta particles).
Understanding how semiconductors behave in magnetic fields is crucial for modern electronics applications. When a semiconductor slice carries current in a magnetic field, interesting phenomena occur due to the interaction between moving electrons and the field.
Vocabulary: Drift velocity refers to the average velocity of charge carriers (electrons) in a conductor under the influence of an electric field.
The rectangular semiconductor slice experiences both electric and magnetic forces when placed in a uniform magnetic field. The magnetic force (F = Bev) acts perpendicular to both the current direction and magnetic field, while the electric force (F = eE) develops due to charge separation.
Example: For a semiconductor with dimensions a = 5.0mm and b = 0.20mm, carrying current I = 60mA in a magnetic field B = 0.080T, we can calculate both the drift velocity and resulting potential difference.
The relationship between current, charge carrier density, and drift velocity follows the equation I = nAev, where n is the number of conducting electrons per cubic meter.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
These principles have significant applications in modern technology, from nuclear power generation to semiconductor devices. Understanding nuclear decay helps in radioactive dating and medical treatments, while semiconductor behavior in magnetic fields is crucial for developing sensors and electronic components.
Highlight: The Hall effect, demonstrated in the semiconductor example, is widely used in magnetic field sensors and position detection devices.
The calculations and concepts presented here form the foundation for more advanced studies in nuclear physics and semiconductor technology. Students should focus on understanding both the mathematical relationships and the underlying physical principles.
When working with electrical circuits, engineers and students often encounter "black box" scenarios where component arrangements are unknown. This detailed guide explores how to systematically identify unmarked terminals and internal circuit configurations using basic measurement techniques.
The experimental setup involves a sealed box containing two resistors (220Ω and 470Ω) and a wire connection, with four unmarked terminals. Using a 6.0V DC supply, a 100Ω external resistor, and a digital ammeter, we can determine the internal arrangement through careful testing and analysis.
Definition: A "black box" circuit is an enclosed system where internal components are hidden, but external terminals are accessible for testing and measurement.
The systematic identification process begins by measuring current flow between different terminal pairs. Since one terminal pair is connected by a wire, this connection will show minimal resistance and maximum current flow. The remaining terminals connect through the resistors in series, allowing us to identify their positions based on the measured current values using Ohm's Law.
To execute the experiment effectively:
Example: When testing terminals connected by the wire, the current reading will be significantly higher than terminals connected through resistors. For a 6.0V supply and 100Ω external resistor:
Access to all documents
Improve your grades
Join milions of students
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Understanding the relationship between voltage, current, and resistance is crucial for successful circuit analysis. When working with unknown configurations, systematic testing combined with theoretical calculations provides a reliable approach to circuit mapping.
The experimental process requires careful attention to measurement accuracy and proper connection techniques. When connecting the ammeter, ensure proper polarity and range selection to avoid damage to the instrument and obtain accurate readings. The external 100Ω resistor serves as both a current limiter and a reference point for calculations.
Highlight: Always begin testing with the lowest voltage setting and highest current range on measuring instruments to protect both the equipment and the circuit components.
Circuit analysis becomes more manageable by creating a detailed testing matrix. Record measurements between each possible terminal combination and analyze the patterns that emerge. The presence of parallel or series configurations will become apparent through the current measurements, allowing for accurate identification of terminal positions.
Vocabulary:
The final step involves verifying the identified configuration by comparing measured values with theoretical calculations. This verification ensures accuracy and provides confidence in the terminal identification process. Document all findings and include circuit diagrams showing the confirmed terminal arrangements and component positions.
Page 1: Exam Information and Instructions
This page outlines the essential examination details for OCR A Level Physics A (H556/03) Unified Physics paper. The examination is structured for a duration of 1 hour and 30 minutes with a total of 70 marks available.
Highlight: Students must use black ink for written responses and may use HB pencils for graphs and diagrams.
Definition: Quality of extended responses will be assessed in questions marked with an asterisk (*).
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user