A galaxy whose stars are arranged in a disk with arms that surround a central bulge is a _____ galaxy. irregular elliptical cluster spiral

Answers

Answer 1

Answer:

Answer;

Spiral galaxy

Explanation;

In a spiral galaxy, the stars, gas and dust are gathered in spiral arms that spread outward from the galaxy's center. Spiral galaxys are divided into three main types depending on how tightly wound their spiral arms are: Sa, Sb and Sc.

All spiral galaxies can broadly be described visually as having a central bulge of old stars surrounded by a flattened disk of young stars, gas and dust.

Answer 2

Answer: A galaxy whose stars are arranged in a disk with arms that surround a central bulge is a spiral galaxy. the rest of the choices do not answer the question above

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Name the physical quantity measured by the area under velocity time graph?

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill? @4.3.8.A @2A)
Kinetic energy decreases and potential energy increases.

B)
Kinetic energy increases and potential energy decreases.

C)
Both potential and kinetic energy decrease.

D)
Both potential and kinetic energy increase

Answers

Answer is B)
When a child is riding on a sled down a steep, snow-covered hill, his elevation decreases and hence Kinetic energy increases and potential energy decreases.

Hope it helps!

A wedge is simply a form of an inclined plane. TRUE or FALSE.

Answers

The statement about "A wedge is simply a form of an inclined plane" is false. The pivot joint is the lever and the wedge are the blades of the scissors. This is to efficiently exert force on an object to cut it.

How are different types of radiation arranged along the electromagnetic spectrum

Answers

In order of increasing frequency: Radio, Microwaves, Infrared, Visible light, Ultra-violet, X-rays, Gamma rays. To remember this try:
Rabbits
Mates
In
Very
Unusual
e(X)pensive
Gardens

Answer:

By the amount of energy they carry

Explanation:

What is dispersion, and how is it related to diffraction and refraction?

Answers

Refraction is simply the bending of light when it moves from one material into another. If light is beamed at 90° to a surface, no bending happens. But if you shine the light at an angle it will bend one way or another.

    Diffraction is a process in which a beam of light travels through a gap or around a barrier, and spreads out as a result.

   Dispersion is the property that the speed of light in a transparent material is different for different wavelengths. Thus the index of refraction is likewise different.

Which particles make up the nucleus of an atom?

Answers

The particles that make up the nucleus of an atom are protons and neutrons.

The nucleus of an atom is composed of two main types of subatomic particles: protons and neutrons. Protons have a positive electric charge, while neutrons have no electric charge, making them neutral. These particles are relatively heavy compared to electrons, which orbit the nucleus.

The protons and neutrons are held together tightly in the nucleus by a strong force called the nuclear force or strong nuclear force. This force overcomes the repulsive force between positively charged protons, keeping the nucleus stable.

The number of protons in the nucleus determines the element's identity. For example, if an atom has one proton, it's hydrogen; if it has six protons, it's carbon, and so on. This number is called the atomic number. The sum of protons and neutrons in the nucleus is called the mass number.

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The nucleus of an atom contains the neutrons and protons, while electrons are on the outer shell.

A train leaves the station at the 0.0m marker traveling with a constant velocity of 45.0 m/s. How manyseconds later will the train pass the 1500.Om marker? What is the velocity of the train in km/h?

Answers

The train will pass the 1500.0m marker 33.33 seconds after leaving the station. Its velocity is 162.0 km/h.

How to evaluate time the train will pass the 1500.0m marker and it's velocity

To find the time it takes for the train to pass the 1500.0m marker, we can use the formula: time = distance / velocity. Plugging in the values,

time = 1500.0m / 45.0 m/s

time = 33.33 seconds.

To convert the velocity from m/s to km/h, we use the conversion factor: 1 m/s = 3.6 km/h. Therefore,

velocity = 45.0 m/s * 3.6 km/h/m/s

velocity = 162.0 km/h.

In summary, the train will pass the 1500.0m marker approximately 33.33 seconds after departing the station, and its velocity will be 162.0 km/h

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Answer:

119.88 km/h

Explanation:

1500/45=33.3

use a m/s to km/h calculator

put in 33.3 for m/s and you will get 119.88 km/h.

119.88 km/h.

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