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
lys-0071 [83]
2 years ago
9

What do astronomers use in addition to parallax to find the actual distance of stars that are close to Earth?

Physics
1 answer:
IgorLugansk [536]2 years ago
7 0

Answer:

trigonometry (guessing)

Explanation:

ellipse: is the shape of an orbit : looks like an oval

periapsis : shortest distance between something like the moon and the planet its orbiting around like the earth

parallax is triangulation. like how gps works. looking at a star one day and then looking at it again 6 months later, an astronomer can see a difference in the viewing angle for the star. With trigonometry, the different angles yield a distance. This technique works for stars within about 400 light years of earth

https://science.howstuffworks.com/question224.htm

By comparing the intrinsic brightness to the star's apparent brightness we can calculate the distance of stars

1/r^2 rule states that the apparent brightness of a light source is proportional to the square of its distance.Jan 11, 2022

https://www.space.com/30417-parallax.html

alternative distance measurement for stars used by most astronomers is the parsec. A star with a parallax angle of 1 arcsecond has a distance of 1 parsec, or 1 parsec per arcsecond of parallax, which is about 3.26 light years

blossoms.mit.edu

.

You might be interested in
Ten identical steel wires have equal lengths L and equal "spring constants" k. The Young's modulus of each wire is Y. The wires
svlad2 [7]

Answer:

option (B)

Explanation:

Young's modulus is defined as the ratio of longitudinal stress to the longitudinal strain.

Its unit is N/m².

The formula for the Young's modulus is given by

Y=\frac{F \times L}{A\times \delta L}

where, F is the force applied on a rod, L is the initial length of the rod, ΔL is the change in length of the rod as the force is applied, A is the area of crossection of the rod.

It is the property of material of solid. So, when the 10 wires are co joined together to form a new wire of length 10 L, the material remains same so the young' modulus remains same.

8 0
2 years ago
A body of mass 5.0 kg is suspended by a spring which stretches 10 cm when the mass is attached. It is then displaced downward an
Dominik [7]

Answer:

position as a function of time is y = 0.05 × cos(9.9)t

Explanation:

given data

mass = 5 kg

length = 10 cm = 0.1 m

displaced = 5 cm

to find out

position as a function of time

solution

we will apply here equilibrium that is

mass × g = k × length

put here value and find k

k = \frac{5*9.8}{.01}

k = 490 N/m

and ω is

ω = \sqrt{\frac{k}{m} }

ω = \sqrt{\frac{490}{5} }

ω = 9.9

so here position w.r.t  time is

y = 0.05 × cosωt

y = 0.05 × cos(9.9)t

so position as a function of time is y = 0.05 × cos(9.9)t

8 0
3 years ago
A current of 12 A flows for 20 minutes into an electric cooker. How much charge has the cooker used?
cluponka [151]
Time= 20 minutes= 20*60=1200 s
Charge=current*time=12*1200=14400 C
7 0
2 years ago
g Light that is incident upon the eye is refracted several times before it reaches the retina. As light passes through the eye,
sertanlavr [38]

Answer

Explanation

:giác mạc

7 0
3 years ago
How does the surface tension of water compared with the surface tension of most other liquids?
Anuta_ua [19.1K]
Surface tension is the direct measure of the cohesive forces between liquid molecules that allows them to form "film", making it more difficult to move an object through the liquid surface. Compared to other known liqiuds, the surface tension of water is much greater. 
5 0
2 years ago
Other questions:
  • A 1.11 kg piece of aluminum at 78.3 c is put into a glass with 0.210 kg of water at 15.0
    7·1 answer
  • What mass of water at 23.0°C must be allowed to come to thermal equilibrium with a 1.75-kg cube of aluminum initially at 150°C t
    12·2 answers
  • Is diet Pepsi heterogeneous or is it homogeneous
    8·2 answers
  • A car is traveling 20 m/s and slows down at a uniform rate. It stops in 6 seconds. How far has it traveled in this interval?
    9·1 answer
  • A 150-kg crate rests in the bed of a truck that slows from 50 km/h to a stop in 12 s. The coefficient of static friction between
    9·1 answer
  • a 450 kg piano is being unloaded from a truck by rolling it down a ramp at 22 degree inclined . there is negligible friction and
    9·1 answer
  • What happens to the magnitude of the gravitational force as the distance between two bodies increase?
    15·1 answer
  • A tennis ball moves 16 meters northward, then 22 meters southward, then 12 meters northward, and finally 32 meters southward.
    6·1 answer
  • 3.A carnival ride has a radius of 5.00 m and exerts an applied force of 987 N on an 80 kg rider.
    7·1 answer
  • If the road becomes wet or crowded, you should ____. slow down and increase your following distance All choices are incorrect. m
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!