Jenn will use 18 connecting cubes to make a model of a park. the model will be in the shape of a rectangle and will have height of one cube. in how many different ways can jenn make the model of the park?

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?