Nebulae formed about 109 years after hydrogen and helium formed, which is the statement that most accurately sums up Kathy's mistake. The third option is the best answer.
<h3>What is the universe?</h3>
The entire cosmic system of matter and energy is the universe. The universe is made up of the Earth, the Sun, the Moon, the planets, the stars, as well as dust, gases, and rocks.
As given in the problem Kathy drew a timeline to show some of the major events that occurred during the evolution of the universe. a timeline with the smallest time labeled as big bang occurred 0s, quarks and electrons formed 10⁻¹⁰ baseline seconds, protons and neutrons formed 300 seconds, nebulae formed 3000 years and hydrogen and helium formed 300000 years
Thus, Nebulae developed about 109 years after hydrogen and helium originated, which best sums up Kathy's mistake. Therefore the correct answer is option C.
Learn more about the universe from here
brainly.com/question/9724831
#SPJ1
Answer:
E = 5.03 10⁻³ N / C
Explanation:
For this exercise we can use Gauss's law
Ф = E. dA = /ε₀
Where as a Gaussian surface we select a cylinder
Ф= E A = q_{int} /ε₀
Let's use the concept of surface charge density
σ = q / A
q = σ A
E A = σ A /ε₀
E = sig /ε₀
Since the plate is non-conductive, the fux does not flow through the plate
With this equation the electric field does not depend on the distance, so the field at 1 cm
E = 45 10³ N/C
σ = E ε₀
σ = 45 10³ 8.85 10⁻¹²
σ = 3.98 10⁻¹⁰ C / m²
As the point where the field is requested is very far from the plate we can not ignore the finite size of it
At r = 15 m the plate has a very small size, so let's calculate the field as created by a point load at this distance
E = k q / r²
The plate area is
A = L L
A = 0.75²
A = 0.5625 m²
q = σ A
q = 3.98 10⁻¹⁰ 0.5625
q = 1.26 10⁻¹⁰ C
Let's calculate
E = 8.99 10⁹ 1.26 10⁻¹⁰ / 15²
E = 5.03 10⁻³ N / C
Answer:
3, 5, and 6, that should be the answer
Answer:
Negative feedback caused his pancreas to produce more insulin.
Explanation:
Positive feedback is a feedback that causes an increase due to change, that is it results in more product while negative feedback is a feedback that causes a decrease due to change, that is it result in lesser product.
Blood sugar control in the body is a negative feedback, because as the blood sugar increases, the nerves sense a change which causes the pancreas to secrete insulin until homeostasis and then the secretion stops.