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xz_007 [3.2K]
3 years ago
7

A Lua reflete parte da luz solar que nela incide. Admite que: a luz refletida pela Lua demora 1,28 segundos a chegar à Terra; en

tre a Lua e a Terra, a luz percorre 300 000 000 de metros em cada segundo; o trajeto da luz é retilíneo. Determina a distância da Lua à Terra. Apresenta o resultado em metros, escrito em notação científica. Mostra como chegaste à tua resposta.
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0

Answer:

3.84 * 10^8 meters

Step-by-step explanation:

As the speed of light is 300,000,000 meters/second and the time that the light takes to go from the moon to the Earth is 1.28 seconds, we can find the distance using the formula:

Distance = speed * time

So we have that:

Distance = 300,000,000 * 1.28 = 384,000,000  meters

In cientific notation, we need the first number to be in the interval from 1 to 10, so we have 3.84, and we have to multiply by 10^8 to reach our result, so we have:

Distance = 3.84 * 10^8 meters

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3 years ago
The perimeter of a rectangle equals one and a half times its area. Express the length of the rectangle in terms of the width (us
WITCHER [35]

Answer:

Step-by-step explanation:

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3 years ago
How much principle, to the nearest dollar, should you invest at 4 percent in order to have $3000 for a vacation to Europe in 3 y
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Answer:

Principle should be $2,667

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4 0
3 years ago
A store sells 3 cans of beans for $9. What is the price of 7 cans of beans?
Leokris [45]

Answer:

21

Step-by-step explanation:

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8 0
3 years ago
3[10-(27÷9) HELP PLEASE​
steposvetlana [31]

Answer:

21

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8 0
3 years ago
Read 2 more answers
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