Physics: Oxygen makes up nearly 20% of the atmosphere. Use the following information to calculate the residence time of oxygen in the atmosphere.Mass of oxygen in atmosphere = 1.4 million gigatonsMajor sources of oxygen to atmosphere:Photosynthesis by plants on land = 125 gigatons/yrPhotosynthesis by plants in ocean = 155 gigatons/yrMajor sinks of oxygen from atmosphere:Respiration by animals = 220 gigatons/yrBacteria = 50 gigatons/yrBurning of fossil fuels = 10 gigatons/yr

Assume that work is equal to force x distance or w=fd. The force here is 6,000n and distance is 10.0 so therefore w=(6000n)(10.0m) and use that to do p=wt (power = work x time...

Oxygen makes up nearly 20% of the atmosphere.

Ответ:

alisucaalisuca

23.01.2022

Physics

Residence time = 5000 years

Explanation:

Given that ;

the mass of oxygen in the atmosphere = 1.4 million gigatons = 1.4 × 10⁶ gigatons

Major sources of oxygen to atmosphere include:

Photosynthesis by plants on land = 125 gigatons/yr

Photosynthesis by plants in ocean = 155 gigatons/yr

Total rate of oxygen = (125 + 155) gigatons/yr

= 280 gigatons/yr

the residence time of oxygen in the atmosphere is therefore calculated by the formula:

Residence time = $\frac{mass \ of \ oxygen \ in \ the \ atmosphere }{ rate \ of \ addition \ of oxygen}$

Residence time = $\frac{1.4*10^6 \ gigatons}{280 \ gigaton/ yr}$

Residence time = 5000 years

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