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
irina1246 [14]
2 years ago
6

Most of the really bright stars in our sky are NOT among the stars that are very close to us. Why then do they look so bright to

us
Physics
1 answer:
Yanka [14]2 years ago
6 0

Answer:

stars will emit more light due to their Luminosity, so they look very bright.

Explanation:

Luminous refers to..,

  • The total amount of energy radiated by a star or other celestial object per second.
  • Therefore it is the power output of a star.

Most of the really bright stars in our sky are not that very close to us yet they look bright because of the Luminosity of the star.

These stars are intrinsically so luminous.

A star's power output across all wavelengths is called its bolometric luminosity.

A star with large luminosity will have more measure of radiated electromagnetic power meaning.

so it will emit more light than a low luminosity star.

Hence,

those stars can easily be seen even across great distance.

learn more about  Luminosity of the star here:

<u>brainly.com/question/13912549</u>

<u />

#SPJ4

You might be interested in
The molecular compound that has a ratio of two oxygen atoms<br> to one carbon atom is named
Ierofanga [76]

Answer: C02 (Carbon Dioxide)

8 0
3 years ago
Hurry!!!!!!!!!!!!!!! Match the terms to the correct descriptions.
Rashid [163]

This can be either kinetic or potential and has to do with the energy of position and motion of an energy- This is related to mechanical energy.It is so because mechanical energy is the sum total of kinetic and potential energy.

This is radiant energy from the sun;it is the only kind of energy we can see with our eyes-It is related to light energy which consists of white light along with its seven colors and these are also electromagnetic radiations.

This is the energy that is transferred by the movement of electrons through a conductor;the electrons create a current-This is related to electric energy.

This type of energy is often found in things like batteries or food-This is related to chemical energy .It is chemical energy which is converted to electrical energy in battery.

This type of energy travels through vibrations on waves-This is related to sound energy which travels in a medium in the form of compressions and rarefactions.

This type of energy is found in the nucleus of an atom-This is related to nuclear energy.For instance the energy produced during nuclear fusion and fission from unstable nuclei.

This is the term used when one type of energy changes from one form to another-This is related to energy conversions.

This type of energy is stored energy;it can be increased by getting into a higher position and/or stretching an object such as a rubber band-This is related to potential energy .It is the energy gained by a body due to its position or change in configurations.

This type of energy can be transferred in three different ways i.e conduction,convection and radiation-We know that heat is transferred in three different ways mentioned above and heat is nothing else than transferred  thermal energy.Hence, it is related to thermal energy.

This has to do with the speed of an object and how much mass it has;basically how the how the object is moving-This is related to kinetic energy which is the energy gained by a body due to its motion.

Mathematically it is written as

                                      kinetic\ energy =\frac{1}{2} mass*[velocity]^2

5 0
3 years ago
A parallel network consist of three resistors 4 ohm, 8 ohm and 16 ohm .If the current in 8 ohm resistor is 3 A then what are the
Studentka2010 [4]

Answer:

If the resistors are in parallel they must all experience the same voltage drop.

R * I = V

8 * 3 = 24 V    (if i is 3 amps)

24V / 4 ohm = 6 amps

24V / 16 ohm = 1.5 amps

5 0
3 years ago
What two things will affect size of the electric force between two objects?​
tatyana61 [14]

<u>Answer:</u>

The two things that affect the size of the electric force between two objects are "amount of charge on each object and distance between the charges".

<u>Explanation:</u>

The magnitude and sign of the electric force are estimated by the electric charge in "Coulombs Law" inspite of mass an object which is favorable in gravitational force. Therefore charge is the property of electromagnetism which influences the charged objects' motion.

More the charge on object more will be the electric force, as bigger charge cloud have more force than smaller.The electric force is inversely proportional to the square of the distance between the two charges. This showcase weaker attraction or repulsion as the distance increases between the two charges.

4 0
3 years ago
1. Define friction, and explain why it occurs.​
Rzqust [24]

Answer:

Friction occurs because no surface is perfectly smooth. Even surfaces that look smooth to the unaided eye make look rough or bumpy when viewed under a microscope.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Be sure to answer all parts. Calculate the mass of each of the following: (a) a sphere of gold with a radius of 12.5 cm. (The vo
    8·1 answer
  • What is the kinetic energy of a car of 1500 kg moving 25 m/s?
    8·1 answer
  • Plz help me with this!
    9·1 answer
  • Weather stays the same all the time
    10·1 answer
  • What does KCI stand for
    14·1 answer
  • If the force applied to an object is
    15·1 answer
  • Consider the addition of an electron to the following atoms from the fourth period. Rank the atoms in order from the most negati
    5·1 answer
  • Where is the acceleration zero?
    14·1 answer
  • an engineer is developing a conveyor belt to help move heavy boxes in factories. The device should be able to move boxes from th
    6·1 answer
  • What does increasing the impulse on an object due to its momentum?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!