Hii everyonee ~~
i just wanted to share this reel i stumbled upon hehe super cute as it can also revise you to Chapter 3: Force and Motion II - Gravitational Potential Energy 🌷🫶

🎈 How Hot Air Balloons Work (Gas Law Edition)

Imagine you’re riding in a giant flying basket with a colourful balloon above your head. How does this magic work? Physics punya kerja lah!

Step 1: The Fire Show 🔥

The pilot turns on the burner. Whooosh! Flames heat up the air inside the balloon.
Hot air molecules = super excited.
They zip around faster, pushing each other further apart.
This makes the air inside the balloon less dense (lighter) than the cooler air outside.

Step 2: Gas Law in Action 📏

From the formula pV = nRT:

Pressure inside ≈ Pressure outside (because the balloon’s mouth is open).
So, when T goes up, the number of air particles inside per volume goes down → density decreases.
Think of it like this: same balloon, but now with fewer, lighter "air friends" inside.

Step 3: Floaty Magic (Actually Buoyant Force) 🎈

Now Archimedes jumps in:
The cooler outside air is heavier than the hot air inside.
This difference creates an upthrust (a big invisible hand lifting the balloon).
When upthrust > total weight → the balloon floats sky-high! 🚀

Step 4: The Pilot’s Game 🎮

Want to go up? Heat more air → lighter inside.
Want to go down? Let the air cool or release hot air → heavier inside.
It’s literally like controlling a flying elevator made of fire and fabric! 🔥🎈

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✩*COUNTDOWN SPM 2025*✧

❃ Subjek: Fizik/ Physics
❃ Tarikh: 4 Disember 2025
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Hye hyeee selamat malaamm

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