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
vazorg [7]
4 years ago
5

The light from many stars can be seen from earth. but there is a time delay between the time the light is emitted from the star

and when we see it here on earth. which of the following statements best explains why there is a delay?
a. the stars light is not bright enough to reach earth immediately
b. stars twinkle so they give off light at regular intervals.
c. Earths atmoshpere is to thick for light to reach the surface as soon as it is
emitted
d. stars are light-years away from earth, so light takes time to reach our planet
Physics
1 answer:
mrs_skeptik [129]4 years ago
4 0
Stars are located at a distance which are measured in terms of light years. Light year is an Astronomical unit used to measure distance between distant Celestial bodies. 
1 light year = 9460730472580<span>800 metres 
But no star is located at a distance of 1 light year. Some stars are located at millions of light years and light travels ~ 3 x 10</span>⁸ m/s. Thus light takes time to reach our atmosphere. 
You might be interested in
Metamorphic rock occurs when you take any other type of rock and put them under ________ and ______________, and they twist and
GrogVix [38]

Answer:

This question appear incomplete

Explanation:

This question appear incomplete because of the absence of options. However, metamorphic rocks are rocks that are formed from other pre-existing rocks under heat and pressure (both are usually high), causing them to twist and melt together. Metamorphism simply means a change in form of something and that's what happens here also.

4 0
3 years ago
Which statement is true about an object moving in a circular motion due to centripetal force, F, when the mass is doubled? A. It
Allushta [10]
Force = [Mass x (velocity)^2]/Radius
Therefore,
The mass and the force are directly proportional.If you double the mass,the force will be doubled too.

A. Its centripetal force would <span>be doubled.</span>
3 0
3 years ago
Galileo discovered that which planet undergoes phases as viewed from earth?
balu736 [363]
<h2>Answer: Venus</h2>

Galileo was the first to use the telescope to observe the heavens, mainly observing the Moon, the Sun with its sunspots, Jupiter with its moons and Venus (in the early 1600s).

In the case of Venus, he observed that it presented phases (such as those of the moon) together with a variation in size; observations that are only compatible with the fact that Venus rotates around the Sun and not around Earth.

This is because Venus presented its smaller size when it is in full phase and the largest size when it is in the new one, when it is between the Sun and the Earth.

These images along with other discoveries were presented to the Catholic Church (which supported the <u>geocentric theory</u> for that time) as a proof that completely refutes Ptolemy's geocentric system and affirms <u>Copernicus' heliocentric theory.</u>

3 0
3 years ago
What is an element that needs to lose or gain<br> 4 valence electrons in order to become<br> stable?
tiny-mole [99]

Answer:

Elements in Group 14 could lose four, or gain four electrons to achieve a noble gas structure. In fact, if they are going to form ions, Group 14 elements form positive ions. Carbon and silicon form covalent bonds. Carbon's millions of organic compounds are all based on shared electrons in covalent bonds.

Explanation:

4 0
3 years ago
What is electromagnetic spectrum made up of
Alla [95]
The electromagnetic spectrum is made up of waves of different lengths, forming bands.
4 0
4 years ago
Other questions:
  • In which of the following conditions does the velocity of the car NOT change?
    10·1 answer
  • How can the process of climate change best be described?
    9·2 answers
  • Roland writes a story in which boaters become stranded on a sandy island. In the story, they set about collecting materials to c
    8·1 answer
  • if the original force between two objects is 0.90 N, and the distance is tripled, what is the new gravitational force between th
    15·1 answer
  • The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pr
    5·1 answer
  • Which object has the least thermal energy?
    5·2 answers
  • What is potential difference also called?
    7·1 answer
  • A current-carrying gold wire has diameter 0.88 mm. The electric field in the wire is0.55 V/m. (Assume the resistivity ofgold is
    7·1 answer
  • The key differences between rotational kinematics and translational kinematics is: A. Rotational kinematics must specify an axis
    7·1 answer
  • A ground-fault circuit interrupter shuts down a circuit if it?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!