Did you solve it? Physics puzzles for smart students
by Alex Bellos from on (#64AWT)
The solution to your coffee woes, and other problems
Earlier today I set these puzzles, suggested by the Department of Physics at Oxford University.
1. Cuppa conundrum
1) Add milk right away, then wait a few minutes before drinking.
2) Wait a few minutes, then add milk just before drinking.
1) it goes up
2) it goes down
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