Chapter 2 Memory Cards: Physical Properties of Materials 🃏
A fun way to review the concepts of this chapter: you can either check the cards yourself, or play with a timer and score. The more you play, the higher your best score will be saved.
Solving Chapter 3 Problems: Work, Energy, and Power — Step-by-Step ⚡
We’ve reached one of the most frequently used chapters in physics—work, energy, and power! The problems in this chapter are highly diverse: from comparing the energy of a meteorite with that of an airplane, to understanding why a pendulum bob doesn’t hit a person’s nose, to calculating the power of oil pumps in high-voltage substations.
Chapter 3 Memory Cards: Work, Energy, and Power 🃏
A fun way to review the concepts of this chapter: you can either check the cards yourself, or play with a timer and score. The more you play, the higher your best score will be saved.
Solving Chapter 4 Problems: Temperature and Heat — Step-by-Step 🌡️
The chapter on temperature and heat is full of real-life applications—from the expansion of train rails and the overflow of glycerin in an aluminum container, to why farmers spray water in their orchards on cold nights, to a diver’s air bubble that becomes 5 times larger upon ascent. This chapter has 31 problems—the largest chapter
Chapter 4 Memory Cards: Temperature and Heat 🃏
A fun way to review the concepts of this chapter: you can either check the cards yourself, or play with a timer and score. The more you play, the higher your best score will be saved.
Equation of State and Thermodynamic Processes: The Language of Gases 📊
A big question 🤔: How does your car engine generate force from burning gasoline? How does your refrigerator pull heat out from inside? How do power plants generate electricity? All of these trace back to a powerful branch of physics: thermodynamics — the science of heat, work, and energy. This
Energy Exchange: Heat and Work, Two Paths for Energy In and Out 🔄
You can heat a pot of water in two ways 🍲: either by placing it on a flame (transferring heat to it), or (strangely but truly!) by stirring it vigorously until it warms up (doing work on it). Both methods increase the water’s energy! 🤔 Thus, energy can enter or leave a system through two pathways: heat
Internal Energy and the First Law of Thermodynamics: The Grand Accounting of Energy ⚖️
A simple yet incredibly powerful law 💪: If I told you, “Any money that enters your account either gets spent or stays in the account,” you’d say, “Well, that’s obvious!” But this seemingly self-evident statement, when applied to energy, is one of the most fundamental laws of all physics! It’s called the First Law of Thermodynamics.
Thermodynamic Processes: Four Ways to Change a Gas 📈
Imagine you have a gas and you want to change it 🎮. You can do this in several ways: keep one of the variables (pressure, volume, or temperature) constant and change the others. Each of these paths is a specific “process” with its own name and rule. Like different cooking recipes for a
Thermodynamic Cycle: The Loop That Generates Endless Work 🔁
An important question 🤔: In the previous lesson, we saw that a gas produces work during expansion. But a gas cannot expand forever—it will eventually reach the end of the cylinder! So, how does the engine continuously produce work? The answer is a brilliant idea: return the gas to its initial state and