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
amid [387]
3 years ago
10

If a distant galaxy has a substantial redshift (as viewed from our galaxy), then anyone living in that galaxy would see a substa

ntial redshift in a spectrum of the Milky Way Galaxy.Choose the correct explanation why the statement makes sense (or is clearly true) or does not make sense (or is clearly false).
a) This statement makes sense. The redshift means that we see the galaxy moving away from us, so observers in that galaxy must also see us moving away from them—which means they see us redshifted as well.b) This statement doesn't make sense. The redshift means that we see the galaxy moving to us, so observers in that galaxy must see us moving away from them—which means they don't see us redshifted.c) This statement makes sense. The redshift means that we see the galaxy moving to us, so observers in that galaxy must also see us moving to them—which means they see us redshifted as well.d) This statement doesn't make sense. The redshift means that we see the galaxy moving away from us, so observers in that galaxy must see us moving to them—which means they don't see us redshifted.
Physics
1 answer:
mario62 [17]3 years ago
3 0

Answer:

Option A

Explanation:

The statement makes sense since it's already explained that the galaxy is moving away from us and unlike option C which depicts that the galaxy is moving to us.

This statement makes sense. The redshift means that we see the galaxy moving away from us, so observers in that galaxy must also see us moving away from them—which means they see us redshifted as well

You might be interested in
The muzzle velocity of a gun is the velocity of the bullet when it leaves the barrel. The muzzle velocity of one rifle with a sh
Anvisha [2.4K]

Answer:small barrel gun

Explanation:

Given

Muzzle velocity of bullet is greater in short barrel gun as compared to larger barrel gun

acceleration is given by change in velocity with respect to time

a=\dfrac{\Delta v}{\Delta t}

In case of short barrel bullet time taken by bullet to reach its muzzle velocity is less therefore acceleration of small barrel bullet is more compared to long barrel bullet.

7 0
3 years ago
How can we measure magnitude of displacement from a v-t curve?​
Ratling [72]

Answer:

The displacement can be calculated by measuring the area of the curve when we move along the t curve. So, that would give the displacement.

Explanation:

4 0
3 years ago
Write a hypothesis for Part II of the lab, which is about the relationship described by F = ma. In the lab, you will use a toy c
Tanzania [10]
If you increase the mass m of the car, the force F will increase, while acceleration a is kept constant. Because F and m are directly proportional.
If you increase the acceleration a of the car, the force F will increase, while mass m is kept constant. Because F and a are directly proportional.

How can Newton's laws be verified experimentally; is by setting this experiment, and changing one variable while keeping the other constant, then observe the change in F.

Hope this helps.
5 0
3 years ago
Read 2 more answers
The highest barrier that a projectile can clear is 24.7 m, when the projectile is launched at an angle of 23.0 ° above the hori
ra1l [238]
Initial velicity Vo.

Sin(23) = 24.7 / Vo
Vo = 24.7/Sin(23)
V0 = 63.2 m/sec
4 0
3 years ago
Describe the wave motion and mechanical wave movement of a seismic P wave 20 pts
mariarad [96]

a mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. while waves can move over long distances, the movement of medium transmission-the material- is limited. again, the oscillating material does not move far away from its initial equilibrium position ;)

7 0
3 years ago
Other questions:
  • What happens if different lights are shined through a prism
    7·2 answers
  • A restoring force of magnitude F acts on a system with a displacement of magnitude x. In which of the following cases will the s
    8·1 answer
  • At an age of 380,000 years, the temperature of the universe had fallen to 3000 k, and electrons could then combine with protons
    10·1 answer
  • A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What i
    7·2 answers
  • An object with mass m moving in a circle of radius r with speed v has linear momentum of magnitude mv and an angular momentum of
    9·1 answer
  • a turtle accelerates from a stop at 3m/s squared to the south for 8s what is the turtles final velocity
    7·1 answer
  • Which contributions did Johannes Kepler make? Check all that apply.
    6·2 answers
  • During an experiment, you take a measurement of 18.3 inches. What is this measurement in centimeters? 1 in = 2.54 cm
    15·2 answers
  • A car’s horn has a frequency of 1000 Hz. An observer hears the
    6·1 answer
  • You pull on a crate using a rope as in (Figure 1), except the rope is at an angle of 20.0 ∘ above the horizontal. The weight of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!