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krok68 [10]
2 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]2 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.
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Answer:

Step-by-step explanation:

The x value represents the time and y value represents the distance

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The graph shows the speed of a ball in free fall for 10 seconds. Which is the constant of proportionality shown in the graph?
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<u>Given</u>:

The graph shows the speed of a ball in free fall for 10 seconds.

We need to determine the constant of proportionality for the given graph.

<u>Constant of proportionality:</u>

The constant of proportionality can be determined using the formula,

\frac{y}{x}=k

Where k is the constant of proportionality.

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Dan is watching The Birds in his backyard. Of the birds he watches, 9. Of them,or 45%, are sparrows. How many birds are in his b
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What is the time period of a loan for $2,500 at 12% exact interest if the amount of interest is $118.36? Round to the next highe
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The stereo system costs $256.

Step-by-step explanation:

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Cost of the stereo system after the discount=?

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Step1:  Finding the discount amount:

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Discount amount = original cost × discount percent

Substituting the values,

\text { Discount amount }=320 \times 20 \%

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