A homeowner is considering having solar panels installed on her roof to capture energy and distribute it throughout her home. This method of getting energy for her home would be an alternative to using electricity made from fossil fuels. This would reduce her impact on the environment. Based on evidence from the image, would these solar panels be a good renewable energy solution for this homeowner? A. No, because the house is too small to have solar panels installed. B. Yes, because the tree branches would protect the solar panels from falling objects. C. Yes, because the red roof would attract more sunlight to the solar panels than a darker colored roof. D. No, because the surrounding trees would block sunlight from reaching the solar panels.

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

Avoltaic cell converts chemical energy to

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil