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Evan Toh
Dec 1, 20230 min read
Evan Toh
Dec 1, 20230 min read
N2007P1Q9 Pure Physics – Energy needed to pump water up a building
Answer: Option B Since water will naturally reach 40m high from the bottom of the apartment, you only need to pump the water up by a...
Evan Toh
Dec 1, 20231 min read
Vector Diagram – Parallelogram Method for 4 different kinds of questions
For Combined Science Physics Olevel, when constructing vector diagram, a method called Parallelogram Method is commonly used....
Evan Toh
Dec 1, 20231 min read
Double-Insulated Appliance – Air purifier in the classroom
Double-insulated appliances are common around us. The air purifiers in our classroom are one good example. In these appliances, only two...
Evan Toh
Dec 1, 20231 min read
Kinematics Question – Using gradient and area under graph
Solutions: Option B
Evan Toh
Dec 1, 20231 min read
Evan Toh
Dec 1, 20230 min read
Evan Toh
Dec 1, 20230 min read
PP2010P1Q23 and SP2014P1Q11 - Identifying what lens, focal length and image from 2 rays
These two 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
Dec 1, 20231 min read
Density (Units Conversion) and Floatation
Density is the mass per unit volume . Common units for density are g/cm3 or kg/m3 . SI unit is kg/m3 . Density of a pure substance is...
Evan Toh
Dec 1, 20231 min read
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