3 years ago

Help please due tomorrow

Physics

1 answer:

Anni [7]3 years ago

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Pretty Easy question please answer only 20 minutes left:

Anna35 [415]

Answer:

D. Conclusion.

Explanation:

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3 years ago

What is the complex and non linear process of energy flow between species called

JulijaS [17]

Answer

Caloric flow

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Depending on the assimilated source of energy, a species population can occupy more than one tropic level. Energy flow in a linear manner in an ecosystem because it moves from level to another and the energy decreases as it transcend from one layer to the other.

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4 years ago

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-In the Bohr model, as it is known today, the electron is imagined to move in a circular orbit about a stationary proton. The fo

vampirchik [111]

Answer:

$4.3859007196\times 10^{-9}\ m$

Explanation:

k = Coulomb constant = $8.99\times 10^{9}\ Nm^2/C^2$

v = Velocity of electron = $2.4\times 10^5\ m/s$

q = Charge of electron = $1.6\times 10^{-19}\ C$

m = Mass of electron = $9.11\times 10^{-31}\ kg$

r = Radius

The electrical and centripetal force will balance each other

$\dfrac{kq^2}{r^2}=\dfrac{mv^2}{r}\\\Rightarrow r=\dfrac{kq^2}{mv^2}\\\Rightarrow r=\dfrac{8.99\times 10^9\times (1.6\times 10^{-19})^2}{9.11\times 10^{-31}\times (2.4\times 10^5)^2}\\\Rightarrow r=4.3859007196\times 10^{-9}\ m$