The frequency of a sound wave in water is 15,000 hz, and the sound wave travels through water at a speed of 1,500 m/s. what is the wavelength?

Why is alchemy not considered to be a science ?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states