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PP2008Q11OR Thermistor in series with fixed resistor, explanation on pd and graph
As both the fixed resistor and the thermistor are connected in series, the sum of potential difference across them will be equal to the...
Evan Toh
Jan 1, 20241 min read
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PP N2010 P1 Q4 Two objects same size and shape but one is heavier. Motion when both released
Solutions: Option C When a body is released from rest, the only force acting on the body is its weight due to gravity . Both bodies...
Evan Toh
Jan 1, 20241 min read
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Identifying what lens, focal length and image from 2 rays – PP2010P1Q23 and SP2014P1Q11
These 2 questions are actually the same. Q23 is from 2010 Pure Physics P1 while Q11 is from 2014 Sci Physics P1. Take a look at these 2...
Evan Toh
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20240 min read
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Understanding Conservation of Energy and applying in calculation questions
Page 4 of Work Energy and Power: Understanding COE
Evan Toh
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20240 min read
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Evan Toh
Jan 1, 20240 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
Jan 1, 20241 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
Jan 1, 20241 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
Jan 1, 20241 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
Jan 1, 20241 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
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20240 min read
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Evan Toh
Jan 1, 20240 min read
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Evan Toh
Jan 1, 20241 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
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20240 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
Jan 1, 20241 min read
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Evan Toh
Jan 1, 20240 min read
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