Notes, summaries, assignments, exams, and problems for Secondary education

Photosynthesis and Cellular Respiration

Photosynthesis

Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen, using light energy. This endothermic reaction can be summarized by the following equation:

6CO₂ + 6H₂O -> C₆H₁₂O₆ + 6O₂

The rate of photosynthesis is influenced by several factors, often referred to as limiting factors. These include:

• Light intensity: Increased light levels generally lead to a higher rate of photosynthesis until an optimum level is reached.
• Carbon dioxide concentration: Higher levels of carbon dioxide can enhance the rate of photosynthesis, up to a certain point.
• Temperature: Plants in their ideal temperature range perform photosynthesis more efficiently than those outside

Standard Form/Scientific Notation

If you had a number like this:

54300000.0

Then you would have to make the number so it is under 10:

5.4300000

But you moved the decimal place 7 places to the left, so the standard form is:

5.43 x 10⁷

HINT

Recurring decimals are written with a little dot or a line above a number to show that it goes on forever.

HINT

Terminating decimals are decimals that eventually stop and are not recurring.

Rounding

When rounding, you round to the nearest number with the amount of decimal places provided. For example:

59.54

The critical digit (last number) determines what the number will be. In this example, the critical digit is 4. 4 or less, let it rest. 5 or more, raise the score. So because the critical digit is 4, you would round the... Continue reading "Decimals, Fractions, and Percentages" »

Ricardian Model

Unit Labour Req.  Pears(Ib).  Oranges(Ib)

Home                  4h (aLp).         3h (aLo)

Foreign.              6h (aLp*).        1h (alp*)

Absolute Advantage - country takes less time to produce goods?

Home -> pears // Foreign -> oranges

Comparative Advantage - lower opportunity cost 

- Home has a C.Adv in pears production as its opp. cost of pears production is lower than foreign country - will specialize in pears

PPF (grafico) - (aLp · Qp) + (aLo · Qo) <= L

4Qp + 3Qo <= L (Qp = 300 & Qo=400)

Maximum home pears production is 300 and oranges 400

Slope = opp. cost - the opp. cost of pear is how many pounds of oranges Home must stop producing in order to make one more pound of pear

Absence of

The Age of Enlightenment

The Age of Enlightenment was a cultural and intellectual movement that dominated the world of ideas in Europe during the 18th century. It was an era in intellectual, scientific, and cultural life where reason was regarded as the primary source of legitimacy and authority.

Philosophers of the Enlightenment

Key figures of the Enlightenment included:

• Voltaire
• Rousseau
• Montesquieu
• Diderot
• D'Alembert

These thinkers built upon the ideas of Descartes, Hobbes, and Locke.

Social Contract, National Sovereignty, and Separation of Powers

Rousseau argued that the social contract is an agreement individuals willingly enter to limit their own freedom for the benefit of society.

Montesquieu, inspired by the English parliamentary system, believed... Continue reading "The Age of Enlightenment and the Scientific Revolution" »

Tourist friendly attitude is the surest way to promote tourism. Promoting tourism is like promoting the larger goal of peace and harmony around the world. Tourism is a driving force for poverty alleviation, job creation and social harmony and role of tourism in creating mutual understanding and Social harmony can be the leading one. If there is any destination in the world, which offers the widest choice to tourists, it is India. Nature tourism, culture tourism, exotic tourism, adventure tourism and spiritual tourism we have everything in India to cater to the diverse preferences of domestic and international tourists. Nothing makes a better and more lasting impression on a tourist than a courteous, friendly and helpful approach. A tourist... Continue reading "Promoting Tourism in India for Peace and Harmony" »

Mathematics in Crisis: Hilbert's Program

In the early 20th century, mathematics faced a crisis. The rapid development of new mathematical concepts and notations raised concerns about the foundations of mathematics. David Hilbert, a prominent mathematician, initiated a project known as Hilbert's Program to address these concerns. Hilbert's goal was to formalize all of mathematics, creating a system that was both consistent (free from contradictions) and complete (capable of proving or disproving any mathematical statement).

Reasons for Formalism:

• The emergence of algebraic methods as a powerful language for describing mathematical abstractions.
• The erosion of the authority of Euclidean geometry and challenges to long-held axioms.

Intentions of Formalism:

Introduction

Despite the distinctive contexts and settings of the literary text "Ransom" by David Malouf and the film "The Queen" directed by Stephen Frears, the notion of grief and its exploration is central to both. As Malouf presents us with the image of Hector's lifeless body being dragged through the sediment, we are reminded of how difficult it is to overcome grief. Indeed, past habits can heavily restrict and hinder the process of healing. Both texts delve into how grief can be overcome by connecting with others, nature, and oneself. Furthermore, both the director and author advocate that overcoming grief unlocks a wealth of benefits.

Views and Values

• Malouf advocates that despite one's societal status, paternal duty is still valued and

Zerbino

• Blinded by the snow
• Doctor of the group
• Auxiliary to the Strauches
• Was kind to some, but also bullied others
• Took it upon himself to be the detective of the group
• Very pessimistic
• Very easy to tease

Inciarte

• Boils
• Goes outside to get coca cola
• Would comfort others when sad
• Very likable despite being a bit of a parasite

E. Strauch

• Opposed to eating meat
• Part of the triumvirate
• "The German"

Parrado

• Most determined to be expeditionary and get out
• Is expeditionary and succeeds in the final expedition
• Never takes advantage of others in the name of his class
• Can't stand Roy Harley

Fito Strauch

• Part of the triumvirate
• In favor of eating meat

Paez

• Fails the trial expedition; goes from a sissy lazy parasite to a hardworking respected member of the group
• Very gruff despite

Photons and Electrons in the Double Slit Experiment

Evidence for Wave-Particle Duality

• A single electron or photon leaves the source with particle-like discreteness and creates a single discrete spot on the screen.
• The interference pattern, which occurs over time, is a wave property.

Diffraction Pattern and Heisenberg’s Uncertainty Principle

• We cannot measure the exact position of each electron or its exact momentum as it approaches the slit; there is uncertainty in both position and momentum.
• The uncertainty in each electron’s y-position is reduced to the width of the slit (since we are certain it passes through the slit). This increases its uncertainty in the momentum of the y-direction.
• The uncertainty in the momentum in the y-direction means