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
krok68 [10]
3 years ago
13

The star aldebaran, visible from earth, lies about 65 light years away from us. What is the minimum amount of time that would be

required to send a message to aldebaran and revive a replay (assuming someone was there to revive it and respond)
Mathematics
1 answer:
makkiz [27]3 years ago
8 0
A beam of light (travelling at the speed of light) would take 65 years to go and 65 years to come back from aldebaran, i.e. 130 years. You can send and receive a radio message (travelling at the speed of light, being electromagnetic radiation) taking so 130 years.
You might be interested in
98 divide by 76<br>76 multiple by 86​
Gnom [1K]

Answer:

98/76= (rounded to the nearest thousandth) 1.289.

4 0
3 years ago
The bottom of a ladder must be placed 5 feet from a building. the ladder is 14 feet long. how far above the ground does the ladd
Kryger [21]
Check the picture below.

6 0
3 years ago
12 + z = 15<br><br> Does anyone know thisplease
belka [17]

Answer:

3

Step-by-step explanation:

15

-

12

-----

3

3 0
3 years ago
A ferris wheel can accommodate 70 people in 20 minutes; how many people could ride the ferris wheel in 4 hours?
kirill115 [55]

Answer:

840

Step-by-step explanation:

if it can hold 70 in 20 minutes it can hold 210 in 1 hour and 4x210 equals 840

3 0
3 years ago
Help pleaseeeeeee :(
Vikki [24]

Answer:

Do 16 times pi.

Step-by-step explanation:

The closest answer is D.

5 0
3 years ago
Read 2 more answers
Other questions:
  • <img src="https://tex.z-dn.net/?f=%20-%2012%20-%204%20%2B%207.5%20-%2011%20%3D%20%20-%206" id="TexFormula1" title=" - 12 - 4 + 7
    5·2 answers
  • This is easy but I forgot how to solve unit rate plz help and show work number 1
    7·1 answer
  • Identify the explanatory and response variables in the following situation:
    11·1 answer
  • Solving polynomial equations<br><img src="https://tex.z-dn.net/?f=6%20%7Bx%7D%5E%7B2%7D%20%3D%2048x" id="TexFormula1" title="6 {
    9·1 answer
  • The record high in January temperature in Austin,Texas,is 90 degreasEr. The record low January temperature is-2 degressF. Find t
    8·1 answer
  • Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test; i.e., describe the values of th
    7·1 answer
  • DE is parallel to AC. Find the measure of angle x and z. Explain how you know.
    7·1 answer
  • 10z + 3 =9z solve for z
    15·2 answers
  • Find x AND the length of each side if ABC is an isosceles triangle with AB = BC . (Answers Rouen to the nearest tenth if needed)
    8·1 answer
  • Six hundred ninety-seven multiplied by sixty-four
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!