Lexy and Jin study the diagram shown
Which best explains who is correct?
Lexy is correct because angle R is between the incident
wave, n = 0, and a diffracted wave.
Lexy is correct because angle R includes the diffracted
wave at n = 1.
Jin is correct because angle S is measured from the
barrier and includes n = 2, the wave that has the most
diffraction
Jin is correct because angle S is between the dimmest
order bands, n = 1 and n = 2.
の力
Lexy says that the diffraction angle is the one labeled R.
and Jin says that the diffraction angle is the one labeled S.

The consumption of fossil fuels could be

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

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).