1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
amm1812
3 years ago
12

In 1650, an individual calculated that the earth was about 6,000 years old. since then, what has happened to scientists' estimat

es of the earth's age? question 9 options: scientists now are less sure about the earth's age scientists now think the earth is much younger scientists agree with the estimate from 1650 scientists now think the earth is much older
Physics
2 answers:
Whitepunk [10]3 years ago
5 0

The answer is:

Scientists now think the earth is much older.

The explanation:

-The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%) This age may represent the age of the Earth’s accretion, of core formation, or of the material from which the Earth formed.This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

-Following the development of radiometric age-dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.

sladkih [1.3K]3 years ago
3 0
What happened to the scientists' estimates of the Earth's age in the year 1650 since then the scientists now think the earth is much older. Currently Earth's age is approximately <span>4.543 billion years. Thank you for posting your question here. I hope the answer helps. </span>
You might be interested in
A synthesis reaction occurs when a substance breaks down into two or more simple
max2010maxim [7]
True . this is called a complex substance
4 0
3 years ago
Read 2 more answers
When sugar is poured from the box into the sugar bowl, the rubbing of sugar grains creates a static electric charge that repels
Afina-wow [57]

Answer:

2.6×10⁻³ N

Explanation:

From coulomb's law,

F = kq'q/r²................ Equation 1

Where F = Repulsive force, q' = charge on the first sugar grain, q = charge on the second sugar grain, r = distance of separation between the sugar grain, k = proportionality constant.

From the question,

since q' = q

Then,

F = kq²/r²..................... Equation 2

Given: q = 1.79×10⁻¹¹ C, r = 3.45×10⁻⁵ m,

Constant: k = 9×10⁹ Nm²/kg².

Substitute into equation 2

F = 9×10⁹(1.79×10⁻¹¹)²/(3.45×10⁻⁵ )²

F = 9×10⁹(3.2041×10⁻²²)/(11.9025×10⁻¹⁰)

F = (28.8369×10⁻¹³)/(11.9025×10⁻¹⁰)

F = 2.6×10⁻³ N.

3 0
3 years ago
A proton is 0.9 meters away from a 1.4 C charge. What is the magnitude of the electric force between the proton and the charge
Digiron [165]

Answer:

F = 2.49 x 10⁻⁹ N

Explanation:

The electrostatic force between two charged bodies is given by Colomb's Law:

F = \frac{kq_1q_2}{r^2}\\

where,

F = Electrostatic Force = ?

k = colomb's constant = 9 x 10⁹ N.m²/C²

q₁ = charge on proton = 1.6 x 10⁻¹⁹ C

q₂ = second charge = 1.4 C

r = distace between charges = 0.9 m

Therefore,

F = \frac{(9\ x\ 10^9\ N.m^2/C^2)(1.6\ x\ 10^{-19}\ C)(1.4\ C)}{(0.9\ m)^2}

<u>F = 2.49 x 10⁻⁹ N</u>

8 0
3 years ago
Read 2 more answers
Which of the following consists of several billion stars and interstellar matter?
zloy xaker [14]
The answer is galaxy
4 0
3 years ago
Read 2 more answers
4-7 Please! This is about scientific experiments.
ladessa [460]
Number 4 is c ,  number 5 is a  ,  number 6 is d and 7 is a 
8 0
3 years ago
Other questions:
  • How to treat thyroid at home​
    9·2 answers
  • While running around the track at school, Milt notices that he runs due East in the 100m homestretch and due West on the 100m ba
    14·2 answers
  • Can anybody answer this​
    8·1 answer
  • A hot air balloon contains 85,000 moles of air. To what temperature must the
    8·1 answer
  • Data is information from which conclusions can be drawn.. . True. False
    14·2 answers
  • White Blood Cells can be part of which body systems? (Choose all that<br> apply)
    9·1 answer
  • Air enters a nozzle steadily at 2.21 kg/m3 and 40 m/s and leaves at 0.752 kg/m3 and 180 m/s. If the inlet area of the nozzle is
    10·1 answer
  • What part of a plant cell traps sunlight?_____________________
    14·2 answers
  • Claudia stubs her toe on the coffee table with a force of 100.ON. A) What is the
    11·1 answer
  • 20 POINTS: <br> Why does the initial hill of a roller coaster need to be steep?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!