g he Beer-Lambert law is valid for absorbance at any wavelength (as long as the same wavelength is used for all solutions being compared). Thus, any wavelength could be used to generate a linear plot of A vs c. Why was it important in this experiment to first find the absorption maximum and use this wavelength (or one close to the maximum) for generating the Beer-Lambert plot used in these calculations? To help answer this, consider what would happen if you repeated the experiment using absorbance data at 550 nm.

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?