Light from a coherent monochromatic light source with a wavelength of 5.20 ✕ 102 nm is incident on (and perpendicular to) a pair of slits separated by 0.310 mm. an interference pattern is formed on a screen 2.10 m from the slits. find the distance (in mm) between the first and second dark fringes of the interference pattern.

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

What do you think car designers do if the damage caused by a crash test is too severe?

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1