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Romashka [77]
3 years ago
11

What is the “cosmic haystack problem”? List as many of its components as you can think of.

Physics
1 answer:
shepuryov [24]3 years ago
8 0

Answer:

About the universe, The problem isn't just that the sky has billions of stars to search but there are also billions of frequencies.

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If Sherry took her pulse for 6 seconds and felt 14 beats, What would her heart rate be?
Tom [10]

Answer:

140 beats per minute

Explanation:

You have to multiply the ratio 14 beats/6 seconds by 10 because 6 seconds times 10 to get 1 minute. The answer you get is 140 beats/60 seconds.

3 0
2 years ago
A large semi-truck is moving a house from one lot to another. The amount of force required to move the house 15.A horizontally a
dlinn [17]

Answer:

252J

Explanation:

Given parameters:

Distance  = 72m

Force  = 3.5N

Unknown:

Work done on the house  = ?

Solution:

Work done is the force applied to move a body through a particular distance.

    Work done  = Force x distance

Now insert the parameters and solve;

   Work done  = 3.5 x 72  = 252J

5 0
3 years ago
Which of the following temperature readings is the coldest?
djverab [1.8K]

Answer: K

Explanation:

From the temperature readings given, we should note that 0°F is thesame as 32°C. Therefore, 0°C is colder than 0°F.

We should note that at 0K which is written as K, it is the coolest and it is often called the absolute zero because at this degree, there can't be anything that's colder.

Therefore, the answer is K

4 0
3 years ago
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ELEN [110]

Answer:

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8 0
2 years ago
1) What proportion of U.S. energy today comes from renewable sources? What is the most prevalent form of renewable energy used i
Rudik [331]

Answer:

Eighteen percent

Explanation:

Eighteen percent of all electricity in the US is sourced from renewable energy ,which includes solar , wind, and hydroelectric dam.

Hydroelectric power is currently the largest producer of renewable electricity in the US, generating around 6.5% of the nation's total electricity  as well as 45.71% of the total renewable electricity generation.The United States is the fourth largest producer of hydroelectricity in the world after China, Canada and Brazil.

8 0
3 years ago
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