What kind of object do we think lies at the center of the Milky Way galaxy?

What kind of object do we think lies at the center of the Milky Way galaxy quizlet? The orbits of stars in the center of the galaxy indicate that the presence of 3 to 4 million solar mass object in a region no larger than our Solar System. How does the diameter of the disk

What is horizontal distance in binary tree?

Horizontal Distance (HD): is the distance of a node from the root node. The HD of the root node is zero. Any node that falls in the vertical line after the root node line will be positive, and any node that falls in the vertical line to the left of the root node will be

Why are planets closer to the sun small and rocky?

The Sun sent out energy and particles in a steady stream, called stellar winds. These winds proved so strong that they blew off mostthe gases of the four planets closest to the Sun, leaving them smaller, with only their rocks and metals intact. That’s why they are called rocky, or terrestrial, planets. Why rocky planets

What is the difference between a star’s apparent brightness and its absolute brightness?

Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs. What is the difference between brightness and apparent brightness? Luminosity is the rate at which a star radiates

Do you double space after a semicolon?

The question of when viability occurs has caused great controversy. 3. Place one space after a comma, a semicolon, and other forms of punctuation falling within a sentence. Should you put 2 spaces after a colon? Just as with the period, it used to be common to put two spaces after a colon, but now

Can you travel to the edge of the universe?

As far as we can tell, there is no edge to the universe. Space spreads out infinitely in all directions. Furthermore, galaxies fill all of the space through-out the entire infinite universe. Can you go past the edge of space? Thanks to dark energy and the accelerated expansion of the Universe, it’s physically impossible to

What is P and Q in geometry?

In conditional statements, “If p then q” is denoted symbolically by “p q”; p is called the hypothesis and q is called the conclusion. For instance, consider the two following statements: If Sally passes the exam, then she will get the job. What does P and q mean in mathematics? The statement p in an

How often do partial lunar eclipses occur?

about three times a yearabout three times a year. Lunar eclipses also can be seen by anyone, as long as it is dark out versus a solar eclipse which is very location dependent. How often do partial eclipses occur? about twice a year Partial eclipses occur about twice a year somewhere in the world. Sometimes

What is Sexagesimal system in trigonometry?

In the Sexagesimal system of measurement a right angle is divided into 90. equal parts called Degrees. Each degree is divided into 60 equal parts called Minutes, and each minute into 60 equal parts called Seconds. The symbols 1°, 1′, and 1″ are used to denote a Degree, a Minute, and a Second respectively. What

Is the cork you used alive?

cork cells are excellent for viewing the cell wall because it is easily visible. The cork is no longer living, the cell wall remains as the only evidence of once living material. Is a cork dead or alive? Cork cells are genetically programmed not to divide, but instead to remain as they are, and are

1 993 994 995 996 997 1,402