IB DP Mathematics-Physics-Computer Science

29/05/2025

I have recently concluded my responsibilities as an IB DP examiner for Physics Higher Level Paper 2 and Internal Assessment. The marking process was extensive and required a high level of focus and analytical rigor.

In the coming days, I look forward to sharing valuable insights and recommendations drawn from this experience. These reflections will aim to support both students and educators in enhancing their preparation for future IB DP Physics examinations.

19/10/2023

Practice questions for Digital Societies:
Topic 4 Contexts
4.2 Economic

4.2C Goods, Services and Currencies:
Knowledge (Remembering): What is e-commerce?
Comprehension (Understanding): How do businesses benefit from personalized advertising in e-commerce?
Application (Applying): Can you provide an example of a business-to-consumer e-commerce platform not mentioned in the paragraph?
Analysis (Analyzing): Compare and contrast business-to-business and consumer-to-consumer e-commerce models in terms of their characteristics and operations.
Synthesis (Creating): Design a personalized advertising campaign for an online marketplace of your choice, explaining the key elements and strategies you would use.
Evaluation (Evaluating): Assess the impact of e-commerce on traditional brick-and-mortar retail stores, considering both positive and negative effects.

Knowledge (Remembering): What distinguishes cryptocurrencies from traditional currencies, particularly in terms of control and regulation?
Comprehension (Understanding): Can you explain how non-fungible tokens (NFTs) work and their significance for artists and collectors?
Application (Applying): Give an example of a real-world situation where a cashless society is becoming more prevalent, and discuss both its advantages and disadvantages.
Analysis (Analyzing): Analyze the controversy surrounding micro-transactions, particularly in the context of in-game loot boxes, and the concerns raised by critics.
Synthesis (Creating): Design a hypothetical NFT project that leverages blockchain technology for a unique digital artifact. Explain how it benefits both artists/creators and collectors.
Evaluation (Evaluating): Evaluate the potential impact of a cashless society on individuals who do not have access to bank accounts, considering the limitations it might impose on their ability to purchase goods and services.


4.2D Globalization:
Knowledge (Remembering): What is the key difference between borderless selling and global sourcing?
Comprehension (Understanding): Explain how borderless selling can benefit businesses in terms of reaching a global audience.
Application (Applying): Can you provide an example of a company that effectively utilizes borderless selling and how it has expanded its global reach?
Analysis (Analyzing): Analyze the potential advantages and disadvantages of global sourcing for corporations, including the criticisms raised by critics.
Synthesis (Creating): Design a hypothetical business strategy that combines borderless selling and global sourcing to create a global business model. Explain how this strategy would benefit the business.
Evaluation (Evaluating): Evaluate the labor practices of offshoring, reshoring, nearsourcing, and insourcing in terms of their impact on local economies and the environment.

23/08/2023

https://www.geogebra.org/calculator/raTk8zsX

Standing waves

02/06/2023

Practice pseudocoding

Write a code to decide if the sum of all numbers is divisible by the last number we entered.
For example:
4
5
7
4
-1
(4+5+7)/4
Sum is divisible by last number
Sum is not divisible by last number.

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02/06/2023

Function A and Function B produce the same output, describe their output.

//function A
A=3
B=7
output "A = ",A, "B = ",B
/////process
A=A+B
B=A-B
A=A-B
////////////
output "A = ",A, "B = ",B

/////////////////////////////////////

//function B
A=3
B=7
output "A = ",A, "B = ",B
///////process
TEMP = A
A = B
B = TEMP
///////////////
output "A = ",A, "B = ",B

25/04/2023

Wolfgang Pauli (1900-1958) was an Austrian theoretical physicist who made significant contributions to the development of quantum mechanics and the understanding of the behavior of subatomic particles.
Pauli is best known for the "Pauli exclusion principle," which states that no two electrons in an atom can occupy the same quantum state simultaneously. This principle is a fundamental concept in quantum mechanics and has important implications for understanding the behavior of atoms and molecules.
Pauli also made important contributions to the development of the theory of relativity, the study of cosmic rays, and the field of particle physics. He was awarded the Nobel Prize in Physics in 1945 for his work on the exclusion principle.
Pauli was also known for his sharp wit and his sometimes abrasive personality. He was famously critical of theories that he considered flawed or incomplete, earning him the nickname "the conscience of physics."

The Pauli exclusion principle is a fundamental principle in quantum mechanics that can be described mathematically using the concept of wave functions. The wave function of a particle is a mathematical function that describes the probability distribution of finding the particle in different locations and states.

For identical fermions, the wave function must be antisymmetric under the exchange of their positions. This can be expressed mathematically as:

Ψ(x1,x2) = -Ψ(x2,x1)

where Ψ is the wave function, x1 and x2 are the positions of the two identical fermions, and the minus sign indicates the antisymmetry requirement.

26/12/2022

Study IB DP physics, mathematics HL, computer science.

https://sites.google.com/site/learnibphysics/

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03/12/2022

A guide to display MySQL data on a mobile screen using php and MIT app inventor.

This video is about showing MySQL data in ListView on the mobile screen.We use PHP file to read data from MySQL, use MIT App Inventor to show data in a ListV...

12/10/2022