Athin film of oil (n = 1.38) of thickness 432 nm with air on both sides is illuminated with white light at normal incidence. determine the most strongly and the most weakly reflected wavelengths in the range 374 nm to 506 nm. (enter your answers in nm.)

Two red blood cells each have a mass of 9.0 multiply.gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx