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vagabundo [1.1K]
3 years ago
7

Okay, so I've been stuck on this for a couple days. I've looked online and whatnot for answers or some help and nothing. So I ca

me here for some help or even just to direct me somewhere where I could hopefully get some answers.
Briefly summarize the evolution of the atmosphere, starting with the formation of Earth and ending with the evolution of eukaryotic organisms
Physics
1 answer:
Lina20 [59]3 years ago
4 0
Here are the Brief summary of the evolution  :

- After earth formed, Volcanoes emtted gas and meteroite brought ice
- Earth cooled and the atmosphere thicken, meanwhile the ocean is also formed
- Cyanobacteria increased the amount of O2
- O2 released into atmosphere and Eukaryotes evolved

hope this helps
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Any magnetic properties occur _____________
lyudmila [28]

Answer:

wen you stick to mangnetits togater

Explanation:

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3 years ago
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An acorn with a mass of .0300 kg is hanging from a branch in a tree it is 2.50 M off the ground what is the potential energy of
Alekssandra [29.7K]
According to another source this is what I got
<span>0.735 J ( Ep-potential energy, m-mass,g-gravitational acceleration = 9.81m/s², h-height; Ep = m * g * h; Ep = 0.0300 kg * 9.81 m/s² * 2.5 m ) 
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You push a desk with 245 N, but the desk doesn't move due to its friction with the ground. What is the magnitude of the friction
const2013 [10]

If the desk doesn't move, then it's not accelerating.

If it's not accelerating, then the net force on it is zero.

If the net force on it is zero, then any forces on it are balanced.

If there are only two forces on it and they're balanced, then they have equal strengths, and they point in opposite directions.

So the friction on the desk must be equal to your<em> 245N</em> .

7 0
3 years ago
Definition: This is a drawing showing the direction and magnitude of all forces acting on a body.
Lisa [10]

Answer:

Free body diagram

5 0
3 years ago
Find equivalent resistance. <br><br>Answer asap and please, please don't spam.​
Alinara [238K]

Answer:

R = 4.77 ohms

Explanation:

Four resistors are given such that,

R₁ = 2 ohms

R₂ = 3 ohms

R₃ = 5 ohms

R₄ = 10 ohms

Here, R₁ and R₂ in series. The equivalent is given by :

R₁₂ = R₁ + R₂

= 2 + 5

R₁₂ = 7 ohms

Similarly, R₃ and R₄ are in series. so,

R₃₄ = R₃ + R₄

= 10+5

R₃₄ = 15 ohms

Now, R₁₂ and R₃₄ are in parallel. So,

\dfrac{1}{R}=\dfrac{1}{R_{12}}+\dfrac{1}{R_{34}}\\\\\dfrac{1}{R}=\dfrac{1}{7}+\dfrac{1}{15}\\\\R=4.77\ \Omega

So, the equivalent resistance s 4.77 ohms.

4 0
3 years ago
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