The Universe is defined to be the sum total of everything that we know about: stars, galaxies, clusters, superclusters, voids, etc.
Cosmology is the study of the structure and evolution of the Universe.
It is a subject of great current interest, as the Hubble Space Telescope and other new instruments have recently helped astronomers shed light on many important questions.
There have been many theories about the Universe, but they generally all share one fundamental postulate, the cosmological principle, which has two parts. First, the Universe must be isotropic (the same in every direction).
For example, the Hubble deep field images, extending 12 Gly away, for two completely different directions, are remarkably similar:
Answer:
Option (4).
Explanation:
Endomembrane system is may be defined as the sysytem that divides the cell into functional compartment or organelle. The organelle of endomembrane system are nuclear envelope, rough and smooth endoplasmic reticulum, golgi body, lysosomes, vesicle and plasma membrane.
Endomembrane system contains different membranes of cell organelle are suspended in the cytoplasm of the eukaryotic cell. Tge endomembrane system helps in synthesis, packaging and export of important proteins and molecules.
Thus, the correct answer is option (4).
<h3>Answer;</h3>
2, 1, 2, 1
<h3><u>Explanation</u>;</h3>
Silver chloride reacts with Copper (II) fluoride to form Silver fluoride and Copper (II) chloride.
AgCl (aq) + CuF2 (aq) ----> AgF (s) + CuCl2 (aq)
The balanced chemical equation will be;
2AgCl (aq) + CuF2 (aq) ----> 2AgF (s) + CuCl2 (aq)
Balancing a chemical equation ensures that the Law of conservation of mass is conserved , such that the number of atoms of each element on either side of the equation is equal.
<span>After the third month of development, lanugo develops on the head (thin, first hair), the muscles and bones are formed an shaped, the mouth movement is possible, the liver and pancreas produce fluid secretions, meconium is made (stool of infant), reproductive organs are developed, but the baby's gender is difficult to distinguish on ultrasound.</span>
It seems you mean 1x10^9 because there are a lot of capillaries indeed. The answer I got is v = 1.65788 * 10^9 meters / second
Given:
vessel diameter = D = 8um
r = D/2 = 4um
v = velocity of blood flow is equal to cardiac output / total capillary area
So, v = Q/A
Where:
Q = cardiac output = 5 liters / minute
A = total capillary area = pi(r^2) multiplied by the number of capillaries
Solve A = pi(r^2) x 10^9
A = pi(4um^2) x 10^9
= pi(16um^2) x 10^9 = 50265000000 um^2
Convert to meters. You will get 50265 m^2
Since velocity uses a meters/second unit format, you should convert Q to something more applicable.
Q = 5 Liters / minute
= 5 L/minute x 0.001 cubic meter/ 1L
= 0.005 m^3/minute
Combine them all and you will get:
v = Q/A = (0.005m^3 / min) / 50265 m^2 = 0.005 m^3 / (min)(50265 m^2)
Then convert minute to seconds, and cancel out m^2 with m^3.
v = 0.005m / 50265 minutes (1minute / 60 seconds) = 0.005m / [60(50265)] seconds
v = 0.00000000165788 meters / second
= 1.65788 * 10^9 meters / second
