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Svetllana [295]
3 years ago
9

Pls help ASAP I DONT have time

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0
Download Symbolab it will answer your question super quick in 2 seconds
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Consider a civilization broadcasting a signal with a power of 2.0×104 watts. The Arecibo radio telescope, which is about 300 met
Vitek1552 [10]

For light: Inverse Square Law 

<span>
The signal is weaken by the inverse square of the difference of distances this means that one over the square of the difference. </span>

<span>
</span>

Therefore, 70000LY / 141 LY =496.45 and that squared =246462.602 times less signal, or 1/246462.602.


 2 For a circular telescope like the Arecibo radio telescope that equals Pi times the radius squared. Sensitivity of the telescope depends on its area.<span>
The new telescope needs 246462.60 times that area to have enough sensitivity </span>

<span>
<span>(150 x 150 x Pi) = 70 685 sq m area for the Arecibo telescope and that times 246462.60
= 1.74212 x 10^10</span></span>

<span><span>
</span></span>

What is the diameter of a circle with that area?

 <span>
<span>1. Divide the area by Pi = 5.548156 x 10^9
2. Take the square root of the result to find the radius = 74485.94293</span></span>

3. Multiply by 2 to find the diameter = <span>148971.886</span>

7 0
3 years ago
15+25=m-45 what is the solution?
zzz [600]
The solution for 15+25=m-45 is m=85
4 0
3 years ago
Read 2 more answers
What is the pattern for 2,5, 11, 23, 47, 95
olga55 [171]
It Is the number x2, then +1. so 30x2+1
3 0
3 years ago
Read 2 more answers
If tan x° = 11 divided by r and cos x° = r divided by s , what is the value of sin x°
Oksana_A [137]
Sin x =11.r We know tan x = sin x divided cos x If you plug in 11 instead of tan x and r for cos x you will have the answer
4 0
3 years ago
Solve 0= 2t^3-21t^2+ 40t
sukhopar [10]
0=2t^3-21^2+40t
switch sides
2t^3-21t^2+40t=0
solve factoring 
t(t-8)(2t-5)=0
using the zero factor principle
t=0&#10;
solve
t-8=0:t=8
solve
2t-5=0:t= \frac{5}{2}
t=0,t=8,t= \frac{5}{2}
Hope this helps

4 0
3 years ago
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