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Mechanics

Mechanics Refutation Question #15

Some people might argue that if we throw something against a wall and it comes to a stop momentum hasn’t been conserved. This is incorrect as…

Categories
EM

EM Refutation Question #2

F=Bqv suggests that a charge moving a magnetic field will always experience a force but this is not correct because…

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Mechanics

Mechanics Refutation Question #16

Students typically assume friction always acts in the opposite direction to motion. However…

Categories
Mechanics

Mechanics Refutation Question #1

Some people think that rockets push against the ground as they take off but really…

Categories
Mechanics

Mechanics Refutation Question #17

You might assume that kicking a concrete football would hurt less on the moon because it’s lighter, however…

Categories
Mechanics

Mechanics Refutation Question #2

A typical GCSE level understanding of balanced forces allows a person to sit on a chair made of jelly. This is false because…

Categories
Mechanics

Mechanics Refutation Question #3

Some people think that it would be safer to hit a 1000 tonne concrete block at 30mph in a tank than in a modern car but actually…

Categories
Circular motion

Circular Motion Refutation Question #1

People often assume that when a car turns a sharp corner this creates a force throwing them outwards, in reality…

Categories
Electric Fields

Electric Fields Refutation Question #1

It is sometimes assumed that electric fields only exist close to charged objects but…