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
vlabodo [156]
3 years ago
7

If a star is 10 light-years away from us and it explodes today, when will we know that it exploded?

Physics
1 answer:
Art [367]3 years ago
3 0
Well, one light year is the distance in which light travels in one year. So, if a star is 10 light-years away from us, and it explodes today, we will know that it exploded 10 years from today. 
You might be interested in
About how long does it take the sun to rotate once about its axis?
Troyanec [42]

Very very roughly, an Earth month.

The Sun isn't solid, so it doesn't all have to rotate at the same rate. Different latitudes actually rotate at different speeds. One complete rotation is about 24 days at the Sun's equator, but 35 days near the poles !

6 0
3 years ago
What are 3 artificial and 2 natural sources of electromagnetic radiation?
KatRina [158]

Answer: its b bro

Explanation:

ajafa'jfbA'FJ

8 0
3 years ago
What is food insecurity?
Rainbow [258]

Answer:

The state of being without reliablr access to a sufficient quantity of affordable, nutritious food

3 0
3 years ago
What must be true for any endothermic reaction?
miskamm [114]
They have to be warm because of the word thermic which means heat
4 0
4 years ago
What does it mean to say that the average speed of a car is 35 miles per hour?
LenKa [72]
It means that the car has covered

(35 miles) x (the number of hours since it started traveling).

At some points during that time, the car was most likely moving
faster or slower than 35 miles per hour.  We don't know.  We only
know that it covered  (35 miles) x (the number of hours since it left).
6 0
3 years ago
Other questions:
  • Megan is waiting for the school bus. She sees it driving down the street straight toward her position. If the bus is moving at a
    10·2 answers
  • The cross sectional area of an optical fibre is 6.3 x 10^-6 m^2 The intensity of the light entering the optical fibre is 3.2 x 1
    10·1 answer
  • A bicycle wheel has an initial angular velocity of 1.10 rad/s . Part A If its angular acceleration is constant and equal to 0.20
    11·1 answer
  • The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters. (a) Determine the
    14·1 answer
  • Look at the graph.
    14·2 answers
  • Plzzz help its for my civics class what answer is it????????????
    14·2 answers
  • if the angle btw the incline and horizontal surface is increased what will happen the magnitude of force needed to hold the obje
    9·1 answer
  • At what tempreture will the of and oC<br>be the same​
    14·2 answers
  • A consumer uses 3098 kWh in 29 days. The utility company charges AED 0.077592 per kWh for the electricity plus AED 0.029998 per
    15·1 answer
  • A car starts from the state of xestIf its velocity becomes 70 km/hr in 6 minutes, i) what is the accordine acceleration of F the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!