Acube has a mass of 100 grams and its density is determined to be 1 g/cm3. the volume of the cube must be

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

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?