I think it's called the Aphelion
Hi sorry
I don’t know sorry
but maybe next time
Answer:
2. it might continue expanding forever
Explanation:
If the ratio is greater than one, then the actual density of the Universe is greater than the critical density, and thus the Universe will eventually become closed and will ultimately end up collapsing in on itself. If the ratio is less than one, then the actual density is less than the critical density, and the Universe is open and expands forever in every direction
Hey there! :D
Cluster- a group of stars or galaxies forming a relatively close association.
<span>Constellation- A group of stars that makes a shape, and has a name that is well known.
</span>
<span /><span>Solar system- a system of planets revolving around a center, or sun.
</span>
Universe- the whole wide range of galaxies, stars, and solar systems that were ever formed.
The best answer would be "Cluster" because the universe is infinite, they are millions of galaxies, solar systems, and constellations in it. The question only states 'a thousand galaxies'. This is of one kind. This best works for the question.
I hope this helps!
~kaikers
Answer: A) velocity is negative and acceleration is positive (-, +)
B) velocity is positive and acceleration is positive (+, +)
Explanation: A) It has been stated in the question that upward motion is to the positive y axis which implies that downward motion is to the negative axis.
The elevator is moving downward which implies that all quantities such as velocity, acceleration and height has negative value (time is always positive).
Before the button was pressed, the body is accelerating and moving with a velocity but since we are along the negative axis they are both negative.
Once the button was pressed the elevator starts decelerating making it have a negative acceleration (-a). This negative acceleration is on the negative y axis this making us have - (-a) =+a.
The elevator still moves with the same value of velocity thus making it retain it negative sign due to the negative axis
B) This motion is along the positive y axis since it is an upward motion thus making all physical quantities such as velocity, acceleration and height positive.
The boy throws the baseball up meaning that an initial velocity is needed to start up the motion.
This velocity is positive (+). As the baseball starts it motion it accelerates which is also positive (+), thus making both velocity and acceleration positive.