A student wants to model the physical weathering of rock. Which activity could the student perform? A. Place several cookies in a box, and then shake the box.

B. Place ice cream in a bowl, and then watch it melt.

C. Place drops of acid on chalk, and then observe the chemical reaction.

D. Place a paper boat in a ditch, and then use water from a hose to make it sail away.

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?