10. A diver is collecting shells under water. They see a very large and beautiful shell so they reach out to pick it up. After several missed attempts to grab the shell, the diver places it in a dive bag and surfaces. At the surface the diver is surprised that the shell is smaller than they thought. Explain this phenomenon.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Asher cycles 12 miles in 16 hours. what is his speed?

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?