Vern has just opened a flower shop. Because of the startup costs, for the next month his net earnings for each bouquet are −$2.50. On Tuesday during that month, he sold 20 bouquets. What are Vern's net earnings for Tuesday?

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?