How are galaxies created

Answers

Answer 1

Answer: Hi There! :)

How are galaxies created

Instead of large gas clouds collapsing to form a galaxy in which the gas breaks up into smaller clouds, it is proposed that matter started out in these “smaller” clumps (mass on the order of globular clusters), and then many of these clumps merged to form galaxies, which then were drawn by gravitation to form galaxy ...

Answer 2

Answer:

Hi!Galaxies are thought to begin as small clouds of stars and dust swirling through space. As other clouds get close, gravity sends these objects careening into one another and knits them into larger spinning packs.

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Nếu tăng khoảng cách giữa hai điểm lên 4 lần thì lực tương tác tĩnh điện giữa chúng sẽ
The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?

A bus slows down uniformly from 21 m/s to a complete stop in 21 seconds. How far did the bus travel before stopping?

Answers

$velocity_(final)-velocity_(initial)=(distance)/(time)\n\n v_(initial)=21(m)/(s)\n v_(final)=0(m)/(s)\n time=21s\n\n \Delta v *time=distance\n\n distance=|(0-21)*21|=441m \n\nBus\ traveled\ 441meters.$

Within an internal combustion engine, the can-shaped component that moves up and down the cylinder and is the main moving part in the engine is theA. connecting rod.
B. piston.
C. spark plug.
D. crankshaft.

Answers

Piston is the part in the combustion engine which moves up and down. Piston is connected in connecting rod which helps to move it.
Spark plugs are used to produce spark.

So the answer is B. Piston

Hope I Helped You!!! :-)

Have A Great Day!!!

Piston is the part in the combustion engine which moves up and down.
So your answer is B.

How can a diving board illustrate the newton's thrid law

Answers

*Just to explain, Newton's Third Law, which is also commonly called the "Law of Action and Reaction" states that force come in pairs, meaning that, for example, if I were to push against the wall, thus exerting a force on the wall, Newton theorizes that the wall exerts a force of equal magnitude right back onto me. *This is thought of more practically when you think of the effects of these forces: I push against the wall, but the wall doesn't move, so the wall is thus pushing back onto me, preventing me from going straight through this wall. *If I were to push onto, say, a sheet of aluminum foil, it would obviously break, but not because it is not exerting a force back, but because the aluminum foil is not strong enough to match my force, so it allows me to go straight through it mostly.

How does an increase in thermal energy affect molecules?

Answers

The molecules tend to speed up and move faster throughout the substance once thermal energy increases. This is evident whenever we heat up water as its molecules tend to move faster throughout the water as thermal energy tends to increase.

Final answer:

An increase in thermal energy causes molecules to move more rapidly and vibrate more quickly. Higher temperatures affect the distribution of kinetic energies and can cause phase changes.

Explanation:

When thermal energy increases, molecules gain more kinetic energy and therefore move more rapidly. This increased kinetic energy causes molecules to vibrate more quickly. As a result, the temperature of the substance increases. Higher temperatures also affect the distribution of kinetic energies among the molecules in a substance. At higher temperatures, more molecules have the necessary kinetic energy to escape from a liquid to the gas phase.

Additionally, increasing thermal energy can cause phase changes in a substance, such as melting or vaporization, where additional energy is used to loosen bonds between molecules or atoms without changing the temperature. Thus, adding thermal energy can lead to the melting or vaporization of a substance.

Learn more about effect of thermal energy on molecules here:

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A ball of a mass 0.3 kg is released from rest at a height of 8 m. How fast is it going when it hits the ground? Acceleration due to gravity is g=9.8 m/s^2

Answers

In order to solve this problem, there are two equations that you need to know to solve this problem and pretty much all of kinematics. The first is that d=0.5at^2 (d=vertical distance, a=acceleration due to gravity and t=time). The second is vf-vi=at (vf=final velocity, vi=initial velocity, a=acceleration due to gravity, t=time). So to find the time that the ball traveled, isolate the t-variable from the d=0.5at^2. Isolate the t and the equation now becomes $√((2d)/a)$ . Solving the equation where d=8 and a=9.8 makes the time $√((2*8)/9.8)$ =1.355 seconds. With the second equation, the vi=0 m/s, the vf is unknown, a=9.8 m/s^2 and t=1.355 sec. Substitute all these values into the equation vf-vi=at, this makes it vf-0=9.8(1.355). This means that the vf=13.28 m/s.

Answer:

The answer is 12.5 m/s

v=the square root of 2 x(gh)

or v = the square root of 2 x (9.8 x 8)

Explanation:

What storm causes flash floods?
Tornado
Thunderstorm
Hurricane

Answers

Answer:

hurricane.

Explanation:

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