We invite any aspiring physicists to try their hand at these physics problems dealing with light, atoms and force:
- Estimate the number of visible photons leaving a 60W light bulb per second.
- How big would a sandcastle be if you made it from the same number of grains of sand as there are atoms in a single grain of sand?
- A ladder can rest on a rough floor against a smooth wall but not on a smooth floor against a rough wall. Why?
Barrie Hall, Richard Huish College
Send your answers to firstname.lastname@example.org for a chance to win a goodie bag!
Teachers, we want to hear from you too – if you want to get involved and set some questions of your own, email email@example.com.