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
Gennadij [26K]
3 years ago
7

Why do scientist use light years instead to measure space instead of kilometers?

Physics
2 answers:
Mashutka [201]3 years ago
8 0
A light year is also a theoretical distance, meaning that we do not actually have a tool for measuring it, like we do meter sticks. Also, think about the vastness of space. The light we see from stars are about 1/64 of the Milky Way Galaxy, if not less. So yes, light years greatly reduces the amount of numbers used to measure distance. Using kilometers would be much too cumbersome.
IrinaK [193]3 years ago
5 0
The reason scientists use light years instead of kilometres is becasue a light year is the distance traveled by light in one year, and if we actually did the math (ill just give it to you)9.4605289*10^{15} meters to put that into perspective a kilometer is 1000 meters or 1.0*10^{3} meters. if they mesured everything in kilometers they would have to use even bigger numbers than they already do.
You might be interested in
Distance and direction of an object's change in position from a starting point are:
blsea [12.9K]

Answer:

An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.

Explanation:

4 0
3 years ago
Read 2 more answers
A sound wave of frequency 440 Hz is played by a musician. What is the
TiliK225 [7]

Answer:

343/440

Explanation:

Recall that v=d/t

Now, this is the same thing.

Frequency is 1/T and wavelength is the distance travelled in one period.

So Vs=f*λ

(the greek letter is used as the symbol of wavelength; it's arbitrary)

7 0
3 years ago
The shortest wavelengths that we can see are experienced as
max2010maxim [7]
The shortest wavelengths that you can see are experienced
as violet light, or whatever is the last color you can see on the
"blue end" of the spectrum.  It's not exactly the same for all eyes.
4 0
4 years ago
Faraday's law states that voltage can be changed by moving the coil out of the magnetic field true or false
NNADVOKAT [17]

As per Faraday's law of induction we know that induced EMF in a conducting closed loop is equal to rate of change in flux in that loop

So here we have

V = \frac{d\phi}{dt}

now when we move out a coil from magnetic field then in this case there will be EMF induced in that coil as here magnetic flux is changing with time linked with the coil.

Now this induced voltage will remain constant if coil is moved out uniformly

But it will not remain constant if coil is moved out with non uniform speed

So this statement is not always true

so answer must be

<u>FALSE</u>

8 0
3 years ago
A horse has a momentum of 25 kg*m/s and a velocity of 2.5 m/s. What is the horse mass?
Ne4ueva [31]
<h3>Answer:  10 kg</h3>

==================================================

Work Shown:

We have these variables

  • p = momentum = 25 kg*m/s
  • m = mass = unknown
  • v = velocity = 2.5 meters per second

Solving for the mass gets us...

p = m*v

25 = m*2.5

25/2.5 = m

10 = m

m = 10

The mass of the horse is 10 kg.

6 0
3 years ago
Other questions:
  • If you take any pitch on the keyboard, the next occurrence of the same letter name going towards the left (down) will vibrate:
    10·1 answer
  • Write a list of at least five scientific methods.
    10·1 answer
  • In the hydrologic cycle, water evaporates into the atmosphere. It then condenses and falls to the ground as precipitation. How c
    8·2 answers
  • 54:12
    6·1 answer
  • What is a heat pump? why does it need to put in external work? (2 points) Thank you
    6·1 answer
  • An outside thermometer reads 57 f what is the tempature in C?
    11·2 answers
  • What can fall but never get hurt
    7·2 answers
  • If a car is rounding a flat curve on a highway, what is the centripetal force on the car?
    12·1 answer
  • Which of the following is an advantage of circuit breakers over fuses.
    7·2 answers
  • A large ball of gas that is held together by gravity and that has a core so hot that
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!