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aniked [119]
3 years ago
11

What is a constellation as astronomers define it today? What does it mean when an astronomer says, “I saw a comet in Orion last

night”?
Physics
1 answer:
MissTica3 years ago
4 0

Explanation:

Constellation: The complete sky has been divided in 88 different areas, in a way we have divided Earth in countries, not necessarily having same shapes and size. These 88 areas are known as constellations. These contains a lot of stars. When we join the brightest stars together we can imagine a shape out of them which is called as Asterism. Most of the people are unaware of this difference. Some of the famous constellations are Orion, Taurus, Gemini, Hydra, Ursa Major etc.

When an astronomer says that there is a comet is in the Orion, he means that a comet is in the boundaries of Orion constellation.

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If a graduated cylinder reads 32.6 ml of water and the level rises when a 6.8 ml object is placed in it, what is the
Andre45 [30]

Answer:

39.4 ml

Explanation:

The displacement is the original volume plus the volume of the other object.

7 0
3 years ago
-Which of the following wires will have the least resistance?
scoray [572]
The wires that will have the least resistance is :
C. A short thick wire
in order to get the least resistence, you need the wire to be the lowest in length and the highest in Area

hope this helps
7 0
3 years ago
Read 2 more answers
You have been learning about chemical and physical properties in class. Your teacher asks you to make a Venn diagram that compar
Maru [420]

Answer: <u>Flammability</u> is a chemical property only.

Odor, density, melting point, boiling point, and solubility are all physical properties.

Formation of a gas, temperature change, and color change can all indicate a chemical change or a physical change has occurred, depending on if the substance's composition is changed in the process.

Hope this helps

6 0
3 years ago
The half-life of radium-226 is 1600 years. How many
Alenkinab [10]

Answer:

1600 years half life

3200/1600 is 2 half lifes

first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount

so 1/4*7gm is 1.75gm

Explanation:

7 0
3 years ago
In a crude model of a rotating diatomic molecule of chlorine (Cl2), the two Cl atoms are 2.00 ✕ 10-10 m apart and rotate about t
Troyanec [42]

Answer:

1.03723\times 10^{-20}\ J

Explanation:

r = Radius of atom = 1\times 10^{-10}\ m

m = Mass of chlorine atom = 5.88\times 10^{-26}\ kg

\omega = Angular speed = 4.2\times 10^{12}\ rad/s

The moment of inertia of the system is given by

I=2mr^2\\\Rightarrow I=2\times 5.88\times 10^{-26}\times (10^{-10})^2\\\Rightarrow I=1.176\times 10^{-45}\ kgm^2

Kinetic energy is given by

K=\dfrac{1}{2}I\omega^2\\\Rightarrow K=\dfrac{1}{2}\times 1.176\times 10^{-45}\times (4.2\times 10^{12})^2\\\Rightarrow K=1.03723\times 10^{-20}\ J

The rotational kinetic energy of one molecule of the atom is 1.03723\times 10^{-20}\ J

7 0
3 years ago
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