7. the according to wien’s law (λmax = 3×106/t), what is the temperature of the radiation? recall that to use this formula, the wavelength must be in nanometers (1nm = 10−9 m) and the temperature will be in kelvin.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

J. j. thomson’s experiment disproved the theory that an atom

If element x has 99 protons how many electrons does it have