Brainlist if correct! the water level of an ocean bay falls 3.5 feet per hour from high tide to low tide. low tide is reached in 7 hours. which expression represents how much the water level decreases between high tide and low tide? a. 21.5 ft. b. 24.5 ft. c. -21.5 ft. d. -27.5 ft.

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?