"If you are looking at an object moving underwater at a certain speed, will it look like it is moving faster or slower when observing from above the water? Or will it look like it is moving at the same speed?"
Where Is The Light That Left Earth 70 Years Ago?
Where Is The Center Of The Universe?
Why Don't Pizzas Dry Out?
When And Why Does Pascal's Law Work?
Why Doesn't Saltwater Freeze?
Twin Paradox Again
Weird Space Drives That Won't Work
Roofing Friction Tests
Source Of Electron's Energy
6903 questions have been answered online since 1998 by volunteers from the Department of Physics at the University of Illinois' Physics Van outreach program. We've tried hard to make this the most reliable physics Q&A site on the Web, but no site is perfect, as we explain on this note. Our Baloney feature provides examples of how shaky many other sites are.
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Although we recommend not using our informal site as a cited reference, students who are in a rush and can't find a more proper peer-reviewed source can check our citation information section.