KDD Physics Online Classes

Let’s learn science with fun! 😊
When we tap or shake something, it moves a little.
That moving is called vibration — and vibration makes sound 🔔

In this short video, a little child learns that:
👉 Shake = Sound
👉 No shake = No sound

Simple science for tiny minds 👶🧠
Learning together with love ❤️

👉 1⁰ = 1 and 1¹ = 1
👉 So, 1⁰ = 1¹ ❌

🚨 Wrong thinking!
Even if the value is same, the power (exponent) is different.

🎯 In this short cartoon explanation, you’ll clearly understand:
✔ Why 1⁰ ≠ 1¹
✔ Common exponent mistakes
✔ How exam traps are created

📍 Class 9 | Class 10 | Foundation Maths
📍 Boards + JEE/NEET basics

🧠 Think conceptually, not numerically.

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KDD Science | Knowledge Da Dhaba

Pressure = Force / Area

In this simple activity, I arranged many paper cups and placed a cardboard sheet on top.
When my son stood on it, the cups did not collapse.

Why? 🤔
Because the weight (force) was distributed over a larger area.
More area → less pressure on each cup → cups survive!

If the same weight is applied on one or two cups, they will collapse immediately due to high pressure.

📌 Conclusion:
Pressure depends on area of contact, not only on force.

In this experiment, a small amount of water is heated inside an aluminum can. The water converts into steam and pushes most of the air out of the can.
When the hot can is suddenly inverted into ice-cold water, the steam condenses rapidly, causing a sharp drop in pressure inside the can.
Due to higher atmospheric pressure outside, the can collapses inward.
This phenomenon is called implosion and clearly demonstrates the effect of atmospheric pressure.

📚 Important for school physics, JEE & NEET
🎥 Learn physics with real-life experiments — Knowledge Da Dhaba