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Mass of a concert grand piano (450 kg) is 25 x Mass of a typical microwave oven (18 kg)
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Length of the longest canal tunnel (Rove Tunnel in France) (7.12 km)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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Click here for Podcast: Andrew Elliott interviewed for New Books Network.