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Evan Toh
Dec 31, 20230 min read
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Evan Toh
Dec 31, 20230 min read
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When to use the concept PV = constant and P1V1 = P2V2 to solve?
When temperature is constant (for o-level), when a fixed mass of gas (fixed number of air molecules) is compressed in a closed system...
Evan Toh
Dec 31, 20231 min read
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Determine the motion of the particles on transverse wave
Instead of imaging how the particles will move and guess their motion, there is a technique which can help you to determine that. In...
Evan Toh
Dec 31, 20231 min read
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Total Internal Reflection (TIR) example 02
Solutions: a) 38.8o    b) 41.8o c) 51.2o . The ray does not emerge as total internal reflection has occurred. The angle of incidence is...
Evan Toh
Dec 31, 20231 min read
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Double Pivots Question
A man is standing on a uniform plank of mass 20 kg and 6 m long. He is standing 1 m from the string at A. a) Find the unknown forces FA...
Evan Toh
Dec 31, 20231 min read
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Force required to pull the block up the inclined plane
There are 3 scenarios with slight variations. Calculate the force F needed to pull the block up the inclined plane. View the video below...
Evan Toh
Dec 31, 20231 min read
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Evan Toh
Dec 31, 20230 min read
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Evan Toh
Dec 31, 20230 min read
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Evan Toh
Dec 31, 20231 min read
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2017PurePhyP2Q5 Two points on the rope wave with displacement-time graphs given
In this this question, the displacement-time graphs are given, which are different from displacement-distance graphs. In the...
Evan Toh
Dec 31, 20231 min read
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Evan Toh
Dec 31, 20230 min read
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Understanding Hydraulic System Overview
Refer to the video tutorial for the basic concepts of hydraulic system. The notes are attached below. Understanding Hydraulic System 01...
Evan Toh
Dec 31, 20231 min read
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Evan Toh
Dec 31, 20230 min read
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Vector Diagram – Parallelogram Method
For Combined Science (Physics), drawing of vector diagram is a must.In general, two known forces are given and the resultant force of...
Evan Toh
Dec 31, 20231 min read
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Function of Fuse
Fuse is a safety feature. In the event of an electrical fault, where there is a short circuit current which exceeds the fuse rating, the...
Evan Toh
Dec 31, 20231 min read
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Evan Toh
Dec 31, 20230 min read
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Understanding Free-Fall (acceleration due to gravity)
On earth, the gravitational field strength is 10 N/kg and the acceleration due to gravity is 10 ms-2 . That means when you release an...
Evan Toh
Dec 31, 20231 min read
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Different Types of Vector Diagrams
Vector diagram is commonly referred to parallelogram diagram . Vector diagrams are generally divded into 3 categories: 1) 2 forces...
Evan Toh
Dec 31, 20232 min read
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Oscillating or Vibrating Object in a Wave Motion
When an object is oscillating or vibrating in a wave motion , the speed of the object varies along the path. In this video, there are...
Evan Toh
Dec 31, 20231 min read
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