|hollowed out sphere|
|Naughts and Crosses|
|Cylindrical Fuel Tank|
|liquid in a cylinder|
|Liquid in a cone|
|Liquid in a sphere|
This is a simple counting exercise; just make sure you don't miss any!
|Flag Colourings 2|
What is the volume of a regular octahedron?
This is the obvious follow up to resistors-2. In this question, you absolutely must use the Kirchhoff laws.
The natural successor to resistors-1. Some interesting strategies and shortcuts start to appear in this problem. We also need to start thinking in terms of Kirchhoffs laws, if not necessary applying them.
The first law says that at any given node $$\sum I_k = 0$$
The second law says that around any closed loop, $$\sum V_k =0$$