# All Puzzles

• Through me, you see through things….
What am i ?

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• You are on holidays and wake up in the morning, stand up, and look South. You look to the left and find you are still looking South. You look to the right and find you are still looking South!

Suddenly you see a bear. What color is it?

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• What is the tree that we all carry in our hand?

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• A boat of mass M1 is floating in a lake of water. The volume of the lake is V. The water surface is initially at height h, as measured relative to the lake’s floor. There is an anchor of mass M2 sitting on the boat’s deck. A person standing on deck picks up the anchor and throws it overboard. The anchor then sinks to the bottom of the lake, and the water surface height becomes h’.

Which of the following qualitative relationships is correct? What assumptions are you making about the values of M1, M2, h, and V?

h’ h

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• Champagne is the traditional toasting drink of New Year’s. Where is it made?

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• When is 1300 plus 20 and 1400 minus 40 the same thing?

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• How do trains turn? Their wheels are on a solid axle, so when one wheel turns a turn, so to will the other. We know that the inner rail of a curve is shorter in the curve than the outer rail. Some people think that perhaps one wheel slips, but with the weight a train puts on a wheel, there is no appreciable slippage. So how do trains turn?

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• On the charts I remain number one,
This position cannot be undone,
If I burn, you may get
Just a little bit wet.
In a zeppelin, I am no fun.

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