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Sever21 [200]
2 years ago
13

A channel of communication is

Advanced Placement (AP)
1 answer:
Olenka [21]2 years ago
6 0

Answer:

A channel of communication is

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Answer:

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An aircraft is climbing at a 30 degree angle to the horizontal. How fast is the aircraft gaining altitude if it's speed is 500 m
denis-greek [22]

Answer:

The aircraft is gaining altitude at 250\frac{mi}{h}

Explanation:

Draw a vector diagram. (Right angle triangle speed as the hypotenuse)

Let

x -----> horizontal component of the speed

y ----> vertical component of the speed

s ----> speed in miles per hour

we know that

x=cos(30\°)(s)

y=sin(30\°)(s)

we have

s=500\ \frac{mi}{h}

cos(30\°)=\frac{\sqrt{3}}{2}

sin(30\°)=\frac{1}{2}

substitute

x=\frac{\sqrt{3}}{2}(500)

x=250\sqrt{3}\frac{mi}{h}

y=\frac{1}{2}(500)

y=250\frac{mi}{h}

therefore

The aircraft is gaining altitude at 250\frac{mi}{h}

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3 years ago
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Black_prince [1.1K]

Answer and Explanation:

Beginning in 1791 a series of treaties between the United States and the Cherokees living in Georgia gave recognition to the Cherokee as a nation with their own laws and customs. Nevertheless, treaties and agreements gradually whittled away at this land base, and in the late 1700s, some Cherokees sought refuge from white interference by moving to northwestern Arkansas between the White and Arkansas Rivers. Then in 1819, the Cherokee National Council notified the federal government that it would no longer cede land, thus hardening their resolve to remain on their homelands. In 1828, Georgia passed a law pronouncing all laws of the Cherokee Nation to be null and void after June 1, 1830, forcing the issue of states' rights with the federal government. At the same time President Andrew Jackson began to aggressively implement a broad policy of terminating Indian land titles and relocating the Indian population. In 1830 Congress passed the Indian Removal Act, which removed Native Americans west of the Mississippi River.

I think it might be D?

8 0
2 years ago
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In Bolandia, the streets are constructed from 10-metre pieces. A lamppost must be placed at both
nadezda [96]

Answer: 340m

Explanation:

Given that:

Streets are constructed from 10 m pieces;

A lamppost is placed at both ends and at every 10 m along its length ;

A lamppost is also placed at every notice board along its length :

Given that:

Einstein Street has 42 lamppost and 7 notice boards :

So,

7 lamppost for 7 notice boards :

Lamppost left = 42 - 7 = 35 lamppost

2 lamppost placed at both ends :

Lamppost left = 35 - 2 = 33 lamppost

Hence, the remaining is placed at 10 m along its length:

Hence, length of Einstein street :

33 lamppost each placed 10m from the starting lamppost = (33 * 10) = 330m

Distance between 33rd lamppost and the ending lamppost = 10m

Hence, total length = (330 + 10) = 340 m

3 0
2 years ago
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