PLEASE HELP ASAP Joe, a hiker, stands at the top of a hill on a trail above the ocean. Joe's friend Dave is just starting out at the
trailhead, which is at the beach.
Which statement about this scenario is accurate?
O The air Joe is breathing is denser than the air at sea level.
O The air pressure is higher where Joe is than where Dave is.
O If Joe keeps going up, air pressure will continue to decrease,
O The air Joe is breathing is denser than the air Dave is breathing,

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

It is really hard for me right know

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.