Ask question

Ask question

All categories

2 years ago

14

Why are light-years more convenient than miles, kilometers, or astronomical units (au) for measuring the distances to stars and

galaxies? (select all that apply.)

1 answer:

Tomtit [17]2 years ago

5 0

Answer:

sEE BELOW

Explanation:

Well.....because the numbers are 'astronomical'....meaning VERY, VERY , VERY LARGE

You might be interested in

A system proposed by the U.S. Navy for underwater submarine communication, called ELF (for extremely low frequency), operates wi

kow [346]

Answer

Wavelength= 30*20^8/30=10^7m

Explanation:

Velocity = frequency *wavelength

We're frequency=30HZ

Velocity of light= 3*10^8m/s

Wavelength= 30*20^8/30=10^7m

Explanation:

7 0

3 years ago

Read 2 more answers

By what factors does the speed of the elctron exceed that of the proton?<br>

____ [38]

Answer:

» An electron is lighter than a proton.

<u>explanation</u><u>:</u>

${ = \: \sf{an \: electron \: has \: formula \: \: }}{ \bf{ {}^{0}_{ - 1}e }}$

hence it's mass number is zero

${ = \: \sf{an \: electron \: is \: helium \: particle \: \: }}{ \bf{ {}^{4} _{2}He }}$

hence it's mass number is 4

<u>Therefore</u><u>,</u><u> </u><u>proton</u><u> </u><u>is</u><u> </u><u>heavier</u><u> </u><u>than</u><u> </u><u>electron</u>

» An electron has a small charge magnitude than a proton.

<u>Explanation</u><u>:</u>

An electron has charge of -1 while proton has charge of +2, therefore electron is less deflected by any energetic fields than a proton

8 0

3 years ago

Experiments and investigations must be ____. a. approved b. repeatable c. not reproducible d. accepted

deff fn [24]

Experiments and investigations must be B. Repeatable.

7 0

3 years ago

Read 2 more answers

Today chemistry is based on the law ofwhat is the matter

melisa1 [442]

Answer:

One scientific law that provides the foundation for understanding in chemistry is the law of conservation of matter. It states that in any given system that is closed to the transfer of matter (in and out), the amount of matter in the system stays constant.

Explanation:

hope it helps ya

5 0

3 years ago

An object falling straight down without air resistance is said to be exhibiting

Tanzania [10]

Answer:

Explanation:

If the object is falling straight down it is in free fall. The difference between that and two-dimensional motion is that 2D motion is parabolic (projectile)

6 0

3 years ago