QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.) O The weight of the air above is smaller. Hot air rises. There is more air below to push up more strongly. The weight of the air below is smaller. Less air above pushes down. O Colder air is less dense.

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ISBN:9781305952300
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QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.)
O The weight of the air above is smaller.
O Hot air rises.
O There is more air below to push up more strongly.
O The weight of the air below is smaller.
O Less air above pushes down.
O Colder air is less dense.
PRACTICE IT
Use the worked example above to help you solve this problem. In a huge oil tanker, salt water has flooded
an oil tank to a depth of h, = 5.40 m. On top of the water is a layer of oil h, = 7.65 m deep, as in the
cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm³. Find the
pressure at the bottom of the tank. (Take 1,025 kg/m³ as the density of salt water.)
Pa
EXERCISE
HINTS:
GETTING STARTED
| 'M STUCK!
Calculate the pressure on the top lid of a chest buried under 4.25 meters of mud with density
1.75 x 103 kg/m3 at the bottom of a 12.5-m-deep lake.
Pa
Transcribed Image Text:QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.) O The weight of the air above is smaller. O Hot air rises. O There is more air below to push up more strongly. O The weight of the air below is smaller. O Less air above pushes down. O Colder air is less dense. PRACTICE IT Use the worked example above to help you solve this problem. In a huge oil tanker, salt water has flooded an oil tank to a depth of h, = 5.40 m. On top of the water is a layer of oil h, = 7.65 m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm³. Find the pressure at the bottom of the tank. (Take 1,025 kg/m³ as the density of salt water.) Pa EXERCISE HINTS: GETTING STARTED | 'M STUCK! Calculate the pressure on the top lid of a chest buried under 4.25 meters of mud with density 1.75 x 103 kg/m3 at the bottom of a 12.5-m-deep lake. Pa
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