A mercury barometer, with a tube of uniform diameter and length 840 mm above the mercury
level in the reservoir, reads 740 mm on a day when
the atmospheric pressure is 760 mm of mercury
Estimate the pressure of the atmosphere on a day
when it reads 720 mm. Assume the average
temperature is the same on both days.

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

d. air pressure decreases as altitude increases.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!

the components of a vector are the parts of the vectors that are to each other.

b perpendicular