A typical bacteria cell is around 5 micrometers in diameter. The nearest we can bring our eyes to an object and still focus on it is about 25 centimeters. Using this information and the Rayleigh criterion, what size eye opening (pupil diameter) must we have in order to resolve two adjacent bacteria? Give your answer in millimeters. (use the wavelength at the midpoint of visible light, 550nm, for your calculations)

Neurons are components of the nervous system of the body that transmit signals as electrical impulses travel along their length. these impulses propagate when charge suddenly rushes into and then out of a part of the neutron called an axon. measurements have shown that, during the inflow part of this cycle approximately 5.6x10^11 na per meter, each with a charge of e enter the axon. how many coulombs of charge enter a 1.10 cm length of axon during this process