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hodyreva [135]
3 years ago
5

Ground-based radio telescopes can collect data from distant objects in space

Physics
2 answers:
sasho [114]3 years ago
6 0

Ground-based radio telescopes can collect data from distant objects in space  during the day or night and in MANY different weather conditions.

BUT ...

-- of course, they have to avoid pointing at the Sun, since the Sun is a loud, humongous source of radio signals !

-- of course, they have to shut down during lightning storms and most rain, because lightning is a loud, humongous source of radio signals, and rain can generate radio static noise.  Rain can also create puddles and unsymmetric wetting inside the radio "dish" antenna, which really messes up the gain and directional pattern of the antenna.    

Arada [10]3 years ago
4 0
Answer is A. Because the telescope are use in night
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Using the law of conservation of angular momentum, we have 

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4 years ago
What is the purpose of using the Scientific Method? Select all that apply.
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6 0
3 years ago
Bird bones have air pockets in them to reduce their weight–this also gives them an average density significantly less than that
lakkis [162]

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Explanation:

Hello!

To solve this exercise use the following steps

1. When Archimedes discovered how to determine the irregular volume of an object by weighing it in the air and in an algua, he found that its volume is equal to the ratio between the differences of the masses (heavy in the air and in the water) and the density of the water (= 1g / ml)

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8 0
3 years ago
Consider a step-down transformer with 15 turns in the primary and 6 turns in the secondary windings. Calculate the input impedan
AURORKA [14]

Answer:

Input impedance of this transformer is 50 ohms.  

Explanation:

Given that,

Number of turns in the primary coil, N_p=15

Number of turns in the secondary coil, N_s=6

Output impedance of the transformer, V_o=8\ \Omega

The number of turns and the impedance ratio in the step down transformer is given by :

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So, the input impedance of this transformer is 50 ohms. Hence, this is the required solution.

8 0
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