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Evan Toh
Nov 30, 20231 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...
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Evan Toh
Nov 30, 20231 min read
2004PPp1q4 2010SPp1q4 Dynamics (3rd law)
Answer: Option D Key concept here is Newton’s 3rd Law. Action equals reaction. Both trolleys are connected by the spring, hence the...
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Evan Toh
Nov 30, 20231 min read
Kinematics – Swimmer in river with current, find distance downstream
Solutions: Option B Without the current in the river, the time taken for the swimmer to reach Q is 50s. This is based on the vertical...
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Evan Toh
Nov 30, 20231 min read
Kinematics Question – Using gradient and area under graph
Solutions: Option B
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Evan Toh
Nov 30, 20231 min read
Relationship between Pressure and Length of a Cube
Answer: Option A
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Evan Toh
Nov 30, 20231 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...
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