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
torisob [31]
2 years ago
14

Why does the North star not move but the other stars move

Physics
1 answer:
blsea [12.9K]2 years ago
3 0

Answer:

it's the star in the center of the star field

Explanation:

Why Doesn't Polaris Move? Polaris is very distant from Earth, and located in a position very near Earth's north celestial pole. ... Polaris is the star in the center of the star field; it shows essentially no movement. Earth's axis points almost directly to Polaris, so this star is observed to show the least movement

You might be interested in
If a substance has a temperature of absolute zero, what can you say about the kinetic energy of the substance’s particles?
Vlad [161]
The particles are making no motion at all.
3 0
3 years ago
A speaker generates a continuous tone of 440 Hz. In the drawing, sound travels into a tube that splits into two segments, one lo
chubhunter [2.5K]

Answer:

The minimum difference between the lengths of the two tubes should be 0.385 meters.

Explanation:

As we known that for any two waves to arrive in phase at any point the difference in the path traveled by the waves should be an integral multiple of the wavelength of the wave.

Mathematically we can write:

\Delta x=n\frac{\lambda }{2}

For the given wave we have

\lambda =\frac{v}{\nu }

Applying values we get

\lambda =\frac{339}{440 }=0.77m

Thus the minimum difference in the lengths of the tubes can be obtained by putting the value of n = 1

\therefore \Delta x=1\times \frac{0.77}{2}=0.385m

7 0
3 years ago
a sprinter with a mass of 80kg accelerates uniformly from 0 m/s to 9 m/s in 3 s. a.)what is the runners acceleration? b.) what i
Katyanochek1 [597]
Part A: 
Acceleration can be calculated by dividing the difference of the initial and final velocities by the given time. That is,
             a = (Vf - Vi) / t
where a is acceleration,
Vf is final velocity,
Vi is initial velocity, and
t is time

Substituting,
            a = (9 m/s - 0 m/s) / 3 s = 3 m/s²
<em>ANSWER: 3 m/s²</em>

Part B: 
From Newton's second law of motion, the net force is equal to the product of the mass and acceleration,
               F = m x a
where F is force,
m is mass, and 
a is acceleration

Substituting,
              F = (80 kg) x (3 m/s²) = 240 kg m/s² = 240 N

<em>ANSWER: 240 N </em>

Part C: 
The distance that the sprinter travel is calculated through the equation,
         d = V₀t + 0.5at²

Substituting,
            d = (0 m/s)(3 s) + 0.5(3 m/s²)(3 s)²
             d = 13.5 m

<em>ANSWER: d = 13.5 m</em>

3 0
2 years ago
What is the function of the muscles around the lens in the human eye
Ede4ka [16]
Its to capture light or to focus. don't forget to like. :D

6 0
3 years ago
In the year 2081 in a shipping port on the moon, workers for Ore-Space, Inc., hoist a 500.0 kg hunk of anorthosite moon rock by
Naddik [55]

Answer:

2,800 n

Explanation:

hope this helps, have a nice day/night! :D

7 0
2 years ago
Other questions:
  • Can an object be in equilibrium if it is in motion?
    11·1 answer
  • Nuclear binding energy is necessary to overcome which of the following? Einstein's mass defect
    14·1 answer
  • An object of mass 2.5 kg has a momentum &lt; 3, 6, 7 &gt; kg m/s. At this instant the object is acted on a by a force &lt; 50, 5
    12·1 answer
  • Which of the following would demonstrate an attraction between magnetic poles?
    10·2 answers
  • A ball thrown horizontally at 18.5 m/s from the roof of a building lands 38.9 m from the base of the building.
    12·1 answer
  • Which of the following items could be dated by the use of radiocarbon dating?
    15·2 answers
  • When is something weightless
    15·1 answer
  • What is most likely the author’s motive for writing this article?
    9·2 answers
  • The shape of the orbit for most comets is a(n):<br><br> circle<br> parabola<br> ellipse<br> oval
    13·1 answer
  • Describe what happened. When was there more potential energy in the system?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!