A mercury barometer with a uniform tube has a length of 800mm above the mercury level in the trough. The barometer reads 740mm on a day when the actual atmospheric pressure is 769mmHg. Prove that the actual atmosphere pressure is 747mmHg on a day when this faulty barometer reads 730mm. Assume the temperature on both days is the same.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

cant without the picture! ?

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

b perpendicular

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.