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
LekaFEV [45]
3 years ago
13

What property of stars can be measured only by using binary-star systems?

Physics
1 answer:
drek231 [11]3 years ago
3 0

Answer:

mass

Explanation:

To expect an understanding of the nature and evolution of the stars, astronomers had to try to determine an important parameter: its mass. This is difficult to determine because neither the luminosity measurements nor the spectral analysis are of any help. The only solution is to resort to astrometry, the precise measurement of stellar positions, and apply it to what is called binary systems, that is, pairs of stars linked by their mutual gravitational attraction and in orbit around each other.

In the solar system there is a law, called the third law of Kepler, that connects the size and period of each planetary orbit and that makes the Sun's mass intervene. This law can be generalized in all bodies in orbit, in particular the members of a binary system. Instead of the mass of the Sun, it is the total mass of the couple that counts. Thus, if it was possible to measure the period and size of a binary system by observation, it would be enough to apply this law in order to calculate the total mass of the pair.

To determine the mass of each star, not just that of the couple, the astronomer had to study in more detail the relative movement of the two members. This allowed him to determine the proportion of each star in the total of the couple and finally obtain the mass of each body.

You might be interested in
Maria and Ben are both suffering from a hereditary disease, as described in the following table.
Margaret [11]
The answer is option B
3 0
3 years ago
Read 2 more answers
You move a 25 n object 4 meters. find the work you did
d1i1m1o1n [39]
In physics, "work<span>" is when a force applied to an object moves the object in the same direction as the force. If someone pushes against a wall, no </span>work<span> is done on the system. It is calculated as follows:

Work = Force x distance
Work = 25 N x 4 meters
Work = 100 N.m</span>
5 0
3 years ago
Read 2 more answers
What is the maximum of the sinusoidal function?.
professor190 [17]
The max is the largest it could get so ( ,0)
8 0
2 years ago
In Niels Bohr's 1913 model of the hydrogen atom, the single electron is in a circular orbit of radius 5.29×10⁻¹¹m and its speed
Svet_ta [14]

The magnitude of the magnetic moment due to the electron's motion is 87.87 * 10^{-37}.

<h3>What is magnetic moment?</h3>

The magnetic pull and direction of a magnet or other object that produces a magnetic field are referred to as the magnetic moment in electromagnetism. Things that have magnetic moments include electromagnets, permanent magnets, various compounds, elementary particles like electrons, and a number of celestial objects (such as many planets, some moons, stars, etc).

The term "magnetic moment" really refers to the magnetic dipole moment of a system, which is the portion of the magnetic moment that can be represented by an equivalent magnetic dipole or a pair of magnetic north and south poles that are only very slightly apart. The magnetic dipole component is adequate for sufficiently small magnets or over sufficiently large distances.

Calculations:

radius= 5.29 * 10^{-11} m\\

velocity=2.9* 10^{6} m/s

Working formula, M=N/A

I=\frac{charge flow }{time taken} =\frac{e}{time taken\\}

T= \frac{2xr}{v} =\frac{2xx * 5.29 * 10^{-11} }{2.9* 10^{6} }

   =15.16 * 10^{-5} s

I= \frac{1.6 * 10^{-19} }{15.16 * 10^{-5} }= 0.10 * 10^{-14}

                     =1 * 10^{-15} C

M=1x (1* 10^{-15} * (5.29 * 10^{-11} )^{2}

  =87.87 * 10^{-37}

To learn more about magnetic moment ,visit:

brainly.com/question/14298729

#SPJ4

4 0
1 year ago
W=90 kg×4n/kg<br>Please halp me i need it ​
kiruha [24]

I'm guessing that this is a problem to find the weight of a 90kg mass on a planet where the acceleration of gravity is 4 m/s^2. (Much less gravity than Earth, a little more than Mars.)

Just do the multiplication, and you get

360 Newtons.

5 0
3 years ago
Other questions:
  • Ah electron is a negatively charged particle that has a charge of magnitude, e - 1.60 x 10-19 C. Which one of the following stat
    12·1 answer
  • What is the work done by the electric force to move a 1 c charge from a to b?
    8·1 answer
  • 7. A mass m1 of 250 g is on a table connected to a massless pulley, as shown. The coefficient of friction between m1 and the tab
    7·1 answer
  • 8) A racecar accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the
    12·1 answer
  • A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.24 m/s2 for 10.0 s. 2
    13·1 answer
  • How does the water cycle ensure that we have water?
    12·2 answers
  • PLEASE ANSWER 50 points
    12·1 answer
  • Please help me out i'm so depressed and such a failure
    10·1 answer
  • A bus starts to move from rest. If its velocity becomes 90 km per hour after 8 s, calculate its acceleration. ​
    13·1 answer
  • Which is an SI base unit that makes up part of the unit of energy?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!