Posts Tagged QotW

September 2nd, 2010

Gaƫlle enjoys soup but is impatient. Instant soups are great satisfiers of children and parents alike for their relatively good taste, variety and ease of preparation. The only problem still present is the impatient daughter part or how to cool the boiling soups rapidly, and relevant to this QotW, to the correct temperature. Ice cubes are the solution but how many should you put?

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June 13th, 2010

Although I would like the QotW to be more applied I sometimes consider interesting proportions between geometric shapes. Imaging you have two perfect spherical oranges on a table. They are touching and there is a compressed Eiffel Tower shape between them and the table. You have a bowl of grapes and would like to roll the biggest one possible through this hole. In terms of the size of the oranges, what is the largest grape that will pass through the whole without pushing apart the oranges?

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May 30th, 2010

Introducing the new series of ‘Question of the Week’ (QotW) where I pose physics and math questions to myself and others. These QotW are meant to explore concepts and generally have a little fun. I am no expert in these so it may very well be that my solutions are wrong and I invite criticism and scrutiny.

QotW #1
When I clean dishes (I do!) and encounter a dirty jam jar, milk bottle or similar container I occasionally consider how much water to put in the container before shaking it. The idea being that the more water (mass) I have inside the more force the water will hit the dirty corners with. The catch is that the more water I put in the jar the less distance it will have to accelerate when I shake the jar and hit the other end. So the question is how much of the container should be filled with water to maximize the force with which the water hits the other side of the jar.

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