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Fantom [35]
3 years ago
6

How far is a light year?? ​

Physics
2 answers:
zavuch27 [327]3 years ago
8 0

Answer

Au=63241.1

Explanation:

light-year = 63241.1

Gala2k [10]3 years ago
6 0

Answer:

1 light-year =

9.461 × 1015 metres

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The half-life of plutonium 239 is 24,200 years. Assume that the decay rate is proportional to the amount. Determine the amount o
kotykmax [81]

Answer:

time taken is equal to 14,156 years

Explanation:

we know,

Y=Ae^{-kt}

at t = 0

Y(0) = A

given that half life of plutonium 239 = 24,200

\dfrac{A}{2}=Ae^{-kt}\\0.5=e^{-kt}\\k\times 24200 = ln(2)\\k = \dfrac{ ln(2)}{24200}

Y=Ae^{-kt}

\frac{3}{2} = e^{-kt}\\ln(1.5)=-\dfrac{ ln(2)}{24200}\times t\\t=-\dfrac{ln(1.5)\times 24200}{ ln(2)}\\t=14,156 \ years

hence time taken is equal to 14,156 years

5 0
3 years ago
We cab calculate work because we know the force and distance.what else would we need to know to calculate power
san4es73 [151]

We would need to know how long it took to do the work.

Power = (work) / (time).

6 0
3 years ago
What is the weight of a ring tailed lemur that has a mass of 10 kg? Use w = mg (g = -9.8 m/s2)
sukhopar [10]

1) Answer:

98 N

Explanation:

The weight of an object is given by:

W=mg

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W=mg=(10 kg)(9.8 m/s^2)=98 N


2) Answer:

87 N

Explanation:

The value of g at the International Space Station is 8.7 m/s^2. Therefore, the weight of the lemur on the Space Station will be

W=mg=(10 kg)(8.7 m/s^2)=87 N

6 0
3 years ago
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Naya [18.7K]
This number will be used to tell you how far your seismograph is from the epicenter of<span> the </span>earthquake!<span> Waves are 24 secs apart
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6 0
3 years ago
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The molecule arrangement of ice, water and steam are very different. _______ has the most ordered arrangement, ______ has the ne
Elis [28]

<u>Answer </u>

A) Ice, water, steam

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Ice is inform of a solid. Solids have particles that are tightly packed and they are in a regular pattern. For this reason they have the most ordered arrangement.

Water is a liquid. It has particles that are closely together but they are not in regular arrangement. For this reason they are next after ice.

Steam is in gaseous state. Gases have particles that are well separated with no definite arrangement. Hence they are the least in the order of molecule arrangement.




3 0
3 years ago
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