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irinina [24]
3 years ago
10

Explain the purpose of a geologic time scale

Physics
2 answers:
son4ous [18]3 years ago
7 0
Geologic time scales are essential tools for geologists and biologists alike because they help show the history of the entire world in terms of relationships between different plate movements.
sladkih [1.3K]3 years ago
6 0
Geologic time scales are essential tools for geologists and biologists alike as a result of they assist show the history of the whole world in terms of relationships between totally different<span> plate movements.

Explanation:
</span>
Time could be an important variable in earth science, as a result of the exact timing of spatially separated events permits the United States of America to reconstruct the surface and surface conditions of the ancient earth. ... geological time spans area unit significantly more difficult to grasp than historical time spans as a result of they're therefore incredibly<span> long.
</span>
In the geological timescale<span>, time </span>is usually<span> divided on </span>the premise<span> of the earth's </span>biotic<span> composition, with the </span>Phanerozoic aeon<span>(i.e. the </span>era<span>, </span>Mesozoic era<span> and </span>cenozoic<span> Eras) representing </span>the amount<span> of Earth's history with advanced life forms, </span>and therefore the<span> Pre Cambrian (or Proterozoic and Hadean Eras.</span>

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An insect 5.00 mm tall is placed 20.0 cm to the left of a thin planoconvex lens. The left surface of this lens is flat, the righ
jenyasd209 [6]

Answer:

a) i = -9.63 cm ,    h ’= .0.24075 cm   erect

b)  i = 259.74 cm ,

Explanation:

For this exercise let's start by finding the focal length of the lens

               1 / f = (n-1) (1 / R₁ - 1 / R₂)

                1 / f = (1.70 -1)) 1 / ∞ - 1/13)

                1 / f = 0.0538

                 f = - 18.57 cm

Now we can use the constructor equation

             1 / f = 1 / o + 1 / i

             1 / i = 1 / f - 1 / o

              1 / i = -1 / 18.57 -1/20

               1 / i = -0.1038 cm

               I = -9.63 cm

For the height of the

image let's use magnification

                 m = h '/ h = - i / o

                  h ’= -h i / o

                  h ’= - 0.5 (-9.63) / 20

                  h ’= .0.24075 cm

b) we invert the lens

The focal length is

             1 / f = (1.70 -1) (1/13 - 1 / int)

              1 / f = 0.0538

             f = 18.57 cm

             1 / i = 1 / f -1 / o

             1 / I = 1 / 18.57 - 1/20

             1 / I = 3.85 10-3

             i = 259.74 cm

     

            h ’= - 0.5 259.74 / 20

             h ’= 6.4935 cm

7 0
3 years ago
On the moon, the acceleration due to gravity is one-sixth that of earth. That is gmoon = gearth /6 = (9.8 m/s2 )/6 = 1.63 m/s2 .
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The pendulum would differ from 300 inches
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Which of the following is related to a sound's pitch?
FromTheMoon [43]
A bell or a siren or a ring in somewhere
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Is this true of false <br> Apples and Onions taste the same if you plug your nose?
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A circuit consists of a 12 V battery connected across a single resistor. If the current in the circuit is
finlep [7]

Answer:

4 Ohms

Explanation:

Apply the formula:

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You can change it the way you want to use for your purpose.

In this case...

R = V/I

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