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Pie
2 years ago
15

What is the minimum diameter necessary for a radio telescope working at f=1×10^10 Hz to be able to separate two objects 1 deg ap

art?
[a] 0.03 m
[b] 0.037 m
[c] 0.47 m
[d] 2.1 m
[e] 6.3 m
Physics
1 answer:
Ad libitum [116K]2 years ago
5 0
Your answer is a yessssssir
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This graph provides data on the amount of water needed to grow four different crops, each used to produce ethanol, a fuel. For e
Degger [83]

Answer:

Producing 300 L of ethanol from potatoes

Explanation:

From the diagram, one liter of ethanol production from sugar cane requires 2000 liters of water. Hence, in order to produce 100 L of ethanol from sugar cane, 2000 x 100 = 200,000 L of water.

1000 liters of water is needed to produce 1 liter of ethanol from sugar beet. Hence, 200 x 1000 = 200,000 L of water will be needed to produce 200 liters of ethanol.

1000 liters of water is also required to produce 1 liter of ethanol from potatoes, hence, 300 x 1000 = 300,000 L of water would be required to produce 300 L of ethanol from the same material

About 500 liters of water is required to produce 1 liter of ethanol from corn, hence, 400 x 500 = 200,000 L of water would be needed to produce 400 L of ethanol from corn.

<u>In conclusion, producing 300 L of ethanol from potatoes would require using the most water among all the options.</u>

3 0
3 years ago
What is the current in a 10v circuit if the resistance is 20Ohm??
GuDViN [60]
I = U / R = 10V / 200Ohm = 50mA
8 0
3 years ago
If a car is traveling at 65mph how many feet can it travel in one second?
Alecsey [184]

Answer:

it could travle 95.333 feet

4 0
3 years ago
Areas near oceans or large lakes tend to have more moderate climates than do areas far from large bodies of water. Which of thes
Taya2010 [7]
<span>Areas near oceans or large lakes tend to have more moderate climates than do areas far from large bodies of water. Which of these statements best explains this observation?

~ Water has a very high specific heat.

A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance?

~ It expands when it freezes.

Which of the following properties of water is due primarily to the uneven distribution of charge between the hydrogen and oxygen atoms?

~ its ability to dissolve ionic substances

A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation?

~ The electrons in the atoms attract the electrons in the other atoms.</span>
7 0
2 years ago
Read 2 more answers
A wave with a speed of 437 m/s has a frequency of 28 hertz. What is the length of the wave?
Natasha2012 [34]

Answer: 15.6 metres

Explanation:

Given that:

length of wave (λ)= ?

Frequency of wave F = 28 Hertz

Speed of wave (V) = 437 m/s

The wavelength is the distance covered by the wave in one complete cycle. It is measured in metres, and represented by the symbol λ.

So, apply V = F λ

Make λ the subject formula

λ = V / F

λ = 437 m/s / 28 Hertz

λ = 15.6 m

Thus, the length of the wave is 15.6 metres

6 0
3 years ago
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