1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna71 [15]
4 years ago
9

Every star is part of a constellation and is assigned a Greek letter within the constellation. Many stars still bear ancient Ara

bic names. Based on what you learned about how astronomers refer to stars, select all of the correct statements from the following list.
All 88 constellations are based on figures that originated in Greek and Middle Eastern mythology.
The α star in a constellation is usually brighter than the β star.
Only the α star of each constellation has an ancient Arabic name.
If a star has an ancient Arabic name, it must be an α star.
All stars are part of some constellation.
A star with an ancient Arabic name is probably relatively bright.
The modern constellations have English names rather than Latin like the ancient ones.
Physics
1 answer:
Andru [333]4 years ago
8 0

Answer:

All 88 constellations are based on figures that originated in Greek and Middle Eastern mythology. (<em>Correct</em>)

The α star in a constellation is usually brighter than the β star. (<em>Correct</em>)

All stars are part of some constellation. (<em>Correct</em>)

The modern constellations have English names rather than Latin like the ancient ones. (<em>Correct</em>)

Explanation:

Constellations were grouped by different civilizations as mean to be oriented when they were making observations of the sky (they could see as maps of certain regions). Each constellation is an arrangement of several stars in a specific figure (animals, mythological characters and objects), things that were important for that civilization.

The letter \alpha is given to the brightest star in a constellation while the other letters of the Greek alphabet are assigned to the other stars that belong to that specific constellation according to their brightness. For example in the Orion constellation the brightest star is Betelgeuse so it is classified with an \alpha; \beta to Rigel, the second in brightness and so on. That classification system was established by the astronomer Johann Bayer in 1603.

The modern constellations have English names, for example the constellations of Telescopium, Fornax, Sculptor, Chamaeleon, among others.

As constellations represent maps of different regions in the sky, any star will be related with them. For that reason is correct to say that all stars are part of some constellation.

You might be interested in
Substance X transfers thermal energy to substance Y through conduction. What is an accurate conclusion about the condition of bo
bagirrra123 [75]
In order for the heat to be transferred from the body X to the body Y via conduction, there must be a difference in temperature of body X with respect to body Y. Body X must have a higher temperature than body Y. This process continues until both bodies arrive at thermal equilibrium, meaning they both have the same temperature. 
7 0
3 years ago
Read 2 more answers
How is Aristotles model similar to Ptolemy’s model
Margarita [4]

I'm assuming you mean models of the solar system:

Both Aristotle and Ptolemy had the idea that the solar system was geocentric. This means that all objects in the solar system including the Sun revolve around the Earth.

4 0
4 years ago
Read 2 more answers
A ball is hung from a rope, making a pendulum. When it is pulled 5° to the side, the restoring force is 1.0 N. What will be the
Trava [24]

Answer:

restoring force is 2 N

Explanation:

given data

angle pulled = 5°

force = 1 N

pulled = 10°

to find out

restoring force

solution

we know here force

force = m×g×sinθ     ..........1

so here θ is very small so sinθ  = θ

1 = mg(5)

mg = 1 /5     ..................2

and

now for 10 degree

we know here θ is small so sinθ  = θ

so from equation 1

force = m×g×sinθ

put equation 2 here

force = 1/5 × 10  

force = 2 N

so restoring force is 2 N

7 0
3 years ago
An insulating plastic rod is charged by rubbing it with a wool cloth, and then brought to an initially neutral conducting metall
barxatty [35]

Answer:

A) is repelled by the sphere.

Explanation:

When a charged insulated rod is touched with an insulated conducting sphere , some  charge on the rod gets transferred to the sphere . So they become similarly charged . We all know that there is repulsion when two similarly charged object are brought near to each other . Hence here too there will be repulsion between the rod and the sphere when the rod is brought near the sphere.

3 0
3 years ago
Light of wavelength 480 nm illuminates a pair of slits separated by 0.27 mm. If a screen is place 1.7 m from the slits, determin
Dahasolnce [82]

Answer:

  Δy = 6.05 mm

Explanation:

The double slit phenomenon is described by the expression

      d sin θ = m λ                constructive interference

      d sin θ = (m + ½) λ       destructive interference

      m = 0,±1, ±2, ...

As they tell us that they measure the dark stripes, we are in a case of destructive interference, let's use trigonometry to find the sins tea

      tan θ = y / x

      y = x tan θ

In the interference experiments the measured angle is very small so we can approximate the tangent

      tan θ = sin θ / cos θ

     cos θ = 1

     tan θ = sin θ

     y = x sin θ

We substitute in the destructive interference equation

     d (y / x) = (m + ½) λ

    y = (m + ½) λ x / d

The first dark strip occurs for m = 0 and the third dark strip for m = 2. Let's find the distance for these and subtract it

 m = 0

      y₀ = (0+ ½) 480 10⁻⁹ 1.7 / 0.27 10⁻³

      y₀ = 1.511 10⁻³ m

 m = 2

     y₂ = (2 + ½) 480 10⁻⁹ 1.7 / 0.27 10⁻³

     y₂ = 7.556 10⁻³ m

The separation between these strips is Δy

     Δy = y₂-y₀

     Δy = (7.556 - 1.511) 10⁻³

     Δy = 6.045 10⁻³ m

     Δy = 6.05 mm

5 0
3 years ago
Other questions:
  • A solid copper cube is attached to spring-like device and is able to oscillate horizontally with negligible friction. Each side
    10·1 answer
  • A book weighs 0.5 kilograms on a book shelf that is 2 meters above the ground. What is the potential energy of the book relative
    13·1 answer
  • Car A uses tires for which the coefficient of static friction is 0.169 on a particular unbanked curve. The maximum speed at whic
    15·1 answer
  • A bearing uses SAE 30 oil with a viscosity of 0.1 N·s/m2. The bearing is 30 mm in diameter, and the gap between the shaft and th
    12·1 answer
  • One reason the skeletal system is important is because ?
    15·1 answer
  • Which compound is an unsaturated hydrocarbon?
    13·2 answers
  • How long does it take for a car to change its velocity from 10 m/s to 25 m/s if the acceleration is 5 m/s^2?
    13·1 answer
  • This graph represents an endothermic reaction. What does it show about the potential energy of reactants and products? HELP ASAP
    13·2 answers
  • If the tension in the rope is 160 n, how much work does the rope do on the skier during a forward displacement of 270 m?
    9·2 answers
  • Two remote control cars with masses of 1.16 kilograms and 1.98 kilograms travel toward each other at speeds of 8.64 meters per s
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!