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elixir [45]
3 years ago
9

Describe British and French trenches.

Social Studies
1 answer:
quester [9]3 years ago
6 0
Trenches were common throughout the Western Front. Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States.
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If research continues to indicate that the SAT is biased against students from low socio-economic backgrounds and does not refle
svet-max [94.6K]

Answer:

<u>It means that the test would have high reliability and not so for the validity.</u>

Explanation:

Even though the test may have reliabiltiy because it can be consistent in some of the structure of evaluation. This doesn't mean that it would be a valid test, because it is biased.

The psychometrc propertes are measured both by validity and reliabiltiy. This means the score can be reliable but as it is biased, it is not reflecting the knowlede and skills so it loses it's validity.

7 0
3 years ago
A particle is in uniform circular motion about the origin of an xy coordinate system, moving counter-clockwise with a period of
zepelin [54]

Answer:\hat{v}=\frac{1}{\sqrt{2}}\hat{i}-\frac{1}{\sqrt{2}}\hat{j}

Explanation:

Given

Time Period T=6.5 s

Position Vector \vec{r}=6\hat{i}-6\hat{j}

Since it is moving in a circular path therefore magnitude of position vector will give the radius of circular path

|r|=\sqrt{6^2+6^2}

|r|=6\sqrt{2}

distance=velocity\times time

6\sqrt{2}=velocity\times 6.5

velocity=\frac{6\sqrt{2}}{6.5}

v=1.305

this velocity is at angle of \tan \theta =\frac{-6}{6}

\theta =-45^{\circ}

velocity \vec{v}=v\cos \theta +v\sin \theta

\vec{v}=1.305\cos (-45)+1.305\sin (-45)

Therefore unit velocity vector

\hat{v}=\frac{1}{\sqrt{2}}\hat{i}-\frac{1}{\sqrt{2}}\hat{j}

3 0
3 years ago
How did ancient Greek colonies differ from other ancient civilizations
o-na [289]
There is a capital difference between all the other civilizations mentioned, even if Greeks were heavily influenced by them and adopted many of their advancements and scientifical discoveries or art, technology and so far.
6 0
3 years ago
What should be the answer for this problem
DIA [1.3K]

Answer:

A. The grain for each tree is unique, so the sticks could be matched to one another

4 0
3 years ago
Krista seemed to be struggling academically in her fourth-grade class. After a battery of tests it was determined that Krista ha
Sati [7]

Answer: IEP (Individualized Education Program).

Explanation: The Individualized Education Program (IEP), it is a legal document under United States of America law that is created for each public school child in the U.S.A who needs special education. However, IEP is created through a special team of the child's parent, guardian and district personnel who has adequate knowledge about the child.

5 0
4 years ago
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