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tatuchka [14]
2 years ago
14

For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.

Physics
1 answer:
e-lub [12.9K]2 years ago
8 0
Evolution of cyanobacteria that produce O2volcanic outgassing to create a thicker atmosphereformation of an ozone layer to block harmful radiationall of the above<span>only a and c

Are the options</span>
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What is The distance traveled by a vehicle in 12 minutes,if it’s speed is 35km/h
Delvig [45]

Answer: 7 km

Explanation: 12 minutes is 1/5 of an hour. 35/5=7

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3 years ago
Example No. 10
Alexxx [7]

The force constant of the spring is determined as 14,222.2 N/m.

<h3>Force constant of the spring</h3>

Apply the principle of conservation of energy,

K.E = U

where;

  • K.E kinetic energy of the elevator
  • U is elastic potential energy of the spring

¹/₂mv² = ¹/₂kx²

mv² = kx²

k = mv²/x²

Where;

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  • v is speed
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k = (2000 x 8²)/(3²)

k = 14,222.2 N/m

Thus, the force constant of the spring is determined as 14,222.2 N/m.

Learn more about force constant here: brainly.com/question/1968517

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5 0
1 year ago
Classify the quadrilateral. parallel sides are indicated with arrows.
Sonbull [250]
A quadrilateral is a four-sided polygon that may be classified as: trapezoid, rectangle, square, rhombus, etc. This classification is based on the measurement of the four angles, the four sides, and their being parallel. Unfortunately though, I think you missed to include here the diagram that we are about to classify. 
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3 years ago
.. Which location shows AUTUMN (fall) in the NORTHERN hemisphere? *
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Answer:

Location 2

Explanation:

This shows fall because the Earth is a little tilted not giving as much light

8 0
3 years ago
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Describe two types of volcanic fields <br><br>please help
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A cinder cone volcano doesn’t have any horizontal layers, and is instead a steep conical hill of tephra that accumulates around and downwind from the vent.
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