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
astraxan [27]
1 year ago
13

a star has a distance of 30 parsecs and a apparent magnitude of 3 --what would its absolute magnitude be?

Physics
1 answer:
Alborosie1 year ago
8 0

The absolute magnitude of the star would be +5.

You might be interested in
The formula can be used to convert temperatures between degrees Fahrenheit () and degrees Celsius (). How many degrees are in th
Jlenok [28]

Answer:

-30°C

Explanation:

F-32/180 =C-0/100

or, -22-32/180=C/100

or, -54/180*100=C

or, -0.3*100=C

therefore, C= -30

-22°F = -30°C

PLEASE MARK ME AS BRAINLIEST!

8 0
2 years ago
A spring does 5.0 J of work on a 0.10-kg ball bearing in a pinball machine. The ball's
lisov135 [29]

Answer:

10m/s

Explanation:

5 0
3 years ago
Describe the electrical and chemical changes that lead to an action potential. Define myelin and discuss its effects.
solniwko [45]

Answer:

The outside of a neuron has more sodium ions while at resting state. When a electrical signal is going to pass through, the sodium channels open up first and the positive sodium ions rush inward making the inner side more positive. This is called action potential.

There is layer of fatty substances called as Myelin Sheath over the course of axons. It helps the electrical signal to be transmitted with a fast pace and efficiently over the course.

6 0
3 years ago
A trained eye in the dark for an extended period of time may pick up a light stimulus from a light source, at the lowest radiate
frez [133]

Answer:

    #_photons = 30 photons / s

Explanation:

Let's start by finding the energy of a photon of light, let's use the Planck relation

         E = h f

the speed of light is related to wavelength and frequency

         c = λ f

we substitute

         E = h c /λ

         E₀ = 6.63 10⁻³⁴ 3 10⁸/500 10⁻⁹

         E₀ = 3.978 10⁻¹⁹ J

now let's use a direct proportion rule. If the energy of a photon is Eo, how many fornes has an energy E = 1.2 10⁻¹⁷ J in a second

          #_photons = 1 photon   (E / Eo)

          #_photons = 1  1.2 10⁻¹⁷ /3.978 10⁻¹⁹

          #_photons = 3.0 10¹

          #_photons = 30 photons / s

3 0
2 years ago
Which statement best describes the isothermal process? A. the temperature remains constant B. the temperature increases at a con
Veronika [31]

Answer:

The answer would be A. - the temperature remains constant

Explanation:

An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0

5 0
3 years ago
Read 2 more answers
Other questions:
  • A neutron star that spins and emits beams of energy is called a _____.
    8·1 answer
  • An example of an action and reaction is sitting on a chair. Your body pushes down on the chair because of the force of _ , and t
    12·1 answer
  • At what age can a child begin to form large concepts such as objects, people, animals, and events?
    12·1 answer
  • The diagram shows waves of sound travelling through the air. By which factor is the sound intensity decreased at 3 meters?
    12·2 answers
  • Distance is constant and time increseas <br><br>Will Speed increase or decrease?<br><br>​
    5·2 answers
  • How does the jet stream affect the movement of air masses
    12·1 answer
  • A person walks along a road 2 miles and rests. Then taking another road, he travels 3 miles; and switching to a dirt path, he wa
    12·2 answers
  • Which one of the following acid-base imbalances? Arterial blood gas levels are obtained from the client. If the client’s results
    12·1 answer
  • A can bavelling at 90kma/hr
    10·1 answer
  • Pls help it's due today​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!