Instead of crossing an ocean in a large ship to explore an uncharted land, Armstrong became famous for leaving Earth entirely. He took a voyage into space aboard a rocket called Apollo 11. ... After the war, Armstrong earned a degree in aeronautical engineering, or the science of designing aircraft.

3 0

4 years ago

Question 6 1 pts What is the angular resolution of a 2.0 m telescope observing at a wavelength of 650 nm? Choose the closest ans

lubasha [3.4K]

Answer:

Option (C)

Explanation:

The angular resolution formula,

Sin A= 0.25 (Wavelength ÷ Diameter)

where, wavelength is taken in micrometer and diameter is in meter.

Here, wavelength (W)= 650 nm = 0.65 μm (converting nanometer into micrometer)

Diameter= 2 m

now, according to the formula,

$\sin A=0.25\times [\dfrac{wavelength}{diameter}]\\\\\sin A=0.25\times \dfrac{0.65\ \mu m}{2\ m}\\\\\sin A=0.08125''\\\\\sin A\approx 0.082''$

Thus, the correct answer is option (C) i.e. 0.082 arc second.

7 0

3 years ago

According to Khana, what lines are most important in North America, and what does the continent need most?

ICE Princess25 [194]

According to Khanna the lines that are important to North America are the ones that are based on connectivity.

<h3>What does Khanna say about continental lines?</h3>

This author referred to this lines as useless lines that divided territories in the world.

According to the author, what the worlds needs are the lines that are able to bring people closer such as technology for better communication and also infrastructure.

Connectivity is said to be the organizing principle of human beings instead of sovereignty.

Read more on continental lines here:

brainly.com/question/811755

#SPJ1

6 0

3 years ago

How many unique triangles can be drawn with interior angles measuring 40°, 40°, and 100°?

Softa [21]

Answer:

There are 3 unique triangles that can be drawn with interior angles measuring 40º, 40º and 100º.

Explanation:

We should remember that according to Euclidean geometry the sum of internal angles in every triangle equals 180º and that every angle is opposed by a side. Given the values of internal triangles, the possible combinations are described below:

$\{100^{\circ}, 40^{\circ}, 40^{\circ}\}$ , $\{40^{\circ}, 100^{\circ}, 40^{\circ}\}$ , $\{40^{\circ}, 40^{\circ}, 100^{\circ}\}$

There are 3 unique triangles that can be drawn with interior angles measuring 40º, 40º and 100º.

4 0

3 years ago