SPM Physics-AHA! Rubber Tires Save Ships with Physics

 

At the docks in Miri, students wonder why massive steel ships float while tiny iron nails sink. Isn’t that a contradiction? This comic reveals the physics truth: Buoyancy (FB = ρVg). A ship’s wide hull displaces a huge volume of water, and the water pushes back with equal force, keeping it afloat. And those “ugly tires”? They’re not decorations — they extend collision time, reducing force by impulse 

$F=\frac{m(v\text{–}u)}{t}$

Join the AHA moment where physics explains both floating giants and the humble tire fenders that protect them.

#AHAPhysicsMoments #CikguLimCY #PhysicsInEverydayLife #100DaysOfPhysics #SeeWithPhysicsEyes #PhysicsWithInsight

SPM Physics-AHA! Why the Moon Blocks Our School Toilets

 

At SMK Lutong, a school in Miri’s historic oil town by the South China Sea, students notice seawater flooding drains and toilets during high tide. This comic reveals the physics truth: The Moon’s gravitational pull creates tidal bulges. As Earth rotates, sea levels rise when the school aligns with the bulge, causing water to backflow into drains. Formula reminder: 

$F=G\frac{m_1{m}_2}{r^2}$

Join the AHA moment where celestial mechanics explain everyday plumbing problems — tides are not just at the beach, they affect schools too!

📌 Cultural Insight — SMK Lutong & Miri, Sarawak

• UNESCO ASPnet School: SMK Lutong is proudly part of the UNESCO Associated Schools Project Network (ASPnet) in Sarawak. This connects the school to a global network of institutions promoting peace, intercultural learning, and sustainable development.

• Lutong’s Identity: Historically known as an oil town, Lutong was once the operational hub for Shell’s petroleum industry in Sarawak. This heritage shaped the community and gave Miri its nickname, “Oil Town.”

🔋 Battery Holder

 

Pemegang bateri digunakan untuk memegang bateri dengan kemas serta menyediakan sambungan elektrik kepada litar. Ia membolehkan satu atau lebih sel disambungkan dengan selamat dan mudah.

A battery holder is used to secure batteries and provide electrical connections to a circuit. It allows one or more cells to be connected safely and conveniently.

👀 Cara Membaca | Reading Technique

✅ Kenal pasti terminal positif (+) dan negatif (−) pada pemegang bateri.

✅ Identify the positive (+) and negative (−) terminals on the battery holder.

✅ Pastikan bateri dipasang mengikut polariti yang betul.

✅ Ensure the batteries are inserted with the correct polarity.

✅ Perhatikan bilangan sel yang digunakan kerana ia menentukan jumlah voltan bekalan.

✅ Observe the number of cells used as it determines the total supply voltage.

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❌ Common Mistakes

❌ Memasang bateri secara terbalik.

❌ Inserting batteries in the wrong direction.

❌ Menganggap lebih banyak bateri sentiasa menghasilkan arus yang lebih besar.

❌ Assuming that adding more batteries always produces a larger current.

❌ Tidak memeriksa sambungan wayar pada terminal output.

❌ Failing to check wire connections at the output terminals.

❌ Mengelirukan sambungan siri dengan sambungan selari pada pemegang bateri.

❌ Confusing series and parallel battery connections.

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⚠️ Safety / Handling

⚠️ Gunakan bateri yang mempunyai saiz dan jenis yang sama.

⚠️ Use batteries of the same size and type.

⚠️ Jangan campurkan bateri lama dan bateri baharu.

⚠️ Do not mix old and new batteries.

⚠️ Tanggalkan bateri selepas eksperimen jika tidak digunakan untuk tempoh yang lama.

⚠️ Remove the batteries after the experiment if not used for a long period.

⚠️ Elakkan litar pintas pada terminal bateri.

⚠️ Avoid short-circuiting the battery terminals.

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🎯 SPM Exam Tip

📌 Dalam kebanyakan pemegang bateri makmal, sel disambungkan secara siri.

📌 In most laboratory battery holders, the cells are connected in series.

📌 Voltan keseluruhan ialah jumlah voltan setiap sel.

📌 The total voltage is the sum of the voltages of individual cells.

Example | Contoh

🔋 1 cell = 1.5 V

🔋 2 cells = 3.0 V

🔋 4 cells = 6.0 V

📌 Semakin banyak sel disambungkan secara siri, semakin tinggi voltan bekalan.

📌 The more cells connected in series, the higher the supply voltage.

SPM Physics-AHA! Why Drones Switch Between Radio and Microwaves

 

In Sarawak’s plantations, drones count oil palm trees and send back GPS and video data. Modern drones are smart — they use dual-band synchronization to switch between radio waves and microwaves. For your exam, remember the core contrast: Radio waves are chosen for control links because their long wavelengths diffract around obstacles. Microwaves are chosen for data and satellite links because their higher frequencies provide massive data capacity. Join the AHA moment where physics explains why drones don’t just fly — they communicate intelligently with the right waves for the right job.

#AHAPhysicsMoments #CikguLimCY #PhysicsInEverydayLife #100DaysOfPhysics #SeeWithPhysicsEyes #PhysicsWithInsight

SPM Physics-AHA! Physics Behind DSLR Lens Choices

 

A student compares a 50mm portrait lens with a 24mm pancake lens, wondering why the smaller one bends light more. This comic reveals the physics truth: Optical power depends on focal length, not size. Formula reminder: 

$P=\frac{1}{f}$

In photography, 24mm lenses are best for landscapes and wide scenes, while 50mm lenses are perfect for portraits. Join the AHA moment where physics meets photography, showing how focal length shapes both science and art.

#AHAPhysicsMoments #CikguLimCY #PhysicsInEverydayLife #100DaysOfPhysics #SeeWithPhysicsEyes #PhysicsWithInsight