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Makovka662 [10]
4 years ago
11

The oxygen isotopic composition of ocean water is measured by determining the ratio of 18O to 16O, expressed as 18O/16O. The iso

tope 16O preferentially evaporates into the atmosphere. During periods of global cooling, the 18O/16O ratio will:
Physics
1 answer:
Talja [164]4 years ago
8 0

Answer:

The ¹⁸O/¹⁶O ratio will decrease.

Explanation:

The  ¹⁸O/¹⁶O ratio changes as a result of temperature. When the climate is warm, the ¹⁶O evaporates first for being lighter than ¹⁸O. When the climate is cold, the ¹⁸O precipitates first for being heavier than ¹⁶O. Thus the cold regions are rich in ¹⁶O (have little ¹⁸O) and the tropics regions are rich in ¹⁸O (have little ¹⁶O). Hence, the ratio ¹⁸O/¹⁶O is high in warm areas (for the evaporation of  ¹⁶O) and lower in cold areas (for the precipitation of ¹⁸O).

Therefore, during periods of global cooling, the ¹⁸O/¹⁶O ratio will decrease.                    

I hope it helps you!      

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3 years ago
The number of different species in the biosphere or in a particular area is called
Arada [10]

Answer:

Biodiversity.

Explanation:

The number of different species in a particular area is known as biodiversity. Blue whales, plants, different kind of animals, and micro-organism living in an ocean is the example of biodiversity. In biodiversity each specie has its own role. For example, if a biodiversity has large number of plants (species), it will have many type of crops.  

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3 years ago
In a track and field event, a hammer thrower accelerates the hammer (mass = 7.30 kg) from rest within four full turns (revolutio
lubasha [3.4K]

Answer:

5.69755 rad/s²

Explanation:

r = Radius = 1.3 m

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n = Number of revolutions = 4

Angular displacement

\theta=n\times 2\pi\\\Rightarrow \theta=4\times 2\pi\\\Rightarrow \theta=8\pi

\omega_i = Initial angular speed = 0

Final angular speed

\omega_f=\frac{v}{r}\\\Rightarrow \omega_f=\frac{22}{1.3}\\\Rightarrow \omega_f=16.92307\ rad/s

Angular acceleration

\alpha=\frac{\omega_f^2-\omega_i^2}{2\theta}\\\Rightarrow \alpha=\frac{16.92307^2-0^2}{2\times 8\pi}\\\Rightarrow \alpha=5.69755\ rad/s^2

Angular acceleration is given by 5.69755 rad/s²

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3 years ago
Why is there emf is induced when magnet is in the middle of coil?
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Why do scientists need a standard system of measurement?
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3 years ago
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