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3 years ago

Why is primary sources and secondary sources useful in historical research?

2 answers:

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Primary sources are the historical documents used by historians as evidence. In contrast, a secondary source is the typical history book which may discuss a person, event or other historical topic.

Lelu [443]3 years ago

7 0

Answer:

primary sources- are when the person who wrote this was actually there and saw everything happen.

A secondary source- is when the writer is going based off other information .

Explanation:

hope this helps :) and if it does, could i please get brainliest? :))

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Two of the grievances listed in the Declaration of Independence were cutting off trade and imposing taxes. What type of grievanc

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Economic, hope this helped!

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What were the main goals of the occupation forces after ww2?

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After the second world war, the occupation of the German and Austrian regions was managed by 4 major powers: France, the United Kingdom, the United States of America, and the Soviet Union. The goals of these powers was twofold.

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https://www.youtube.com/watch?v=e-EjnQwqbaQ

The second of these goals was the establishment of two new German states. The Soviet Union laid the ground work for what would become the communist German Democratic Republic in the late 1940s in the eastern half of Germany, while the allies established a market-liberal counterpart (the Federal Republic of Germany) in the west.

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3 years ago

jake pushes a heavy box across a carpeted floor.Name three forces that act on the box, and explain how you know these are unbale

Maurinko [17]

Answer:

The forces acting on the heavy box pushed across the carpeted floor are:

- Gravitational force: this force acts on any object with mass, and it always acts downwards (towards the Earth's centre). its magnitude is

$W=mg$

where m is the mass of the box and g is the acceleration due to gravity.

- Normal force: this is the reaction force exerted by the floor on the box, N, and it acts upward, in the direction opposite to gravity. This force perfectly balances the force of gravity along the vertical direction.

- Applied force: this is the force due to the push applied by Jake, $F$ . It acts horizontally in the forward direction.

- Force of friction: this is a resistive force that acts in the opposite direction to the motion of the box, $F_f$ , and it is due to the contact between the microbumps present on the surface of the box and of the floor.

While the forces along the vertical direction are balanced, the forces along the horizontal direction are not, since the applied force is larger than the frictional force:

$F>F_f$

This means that the net force along the horizontal direction is non-zero:

$F_{net}=F-F_f > 0$

And according to Newton's second law of motion, this also means that the box has a non-zero acceleration along the horizontal direction:

$F_{net}=ma \rightarrow a=\frac{F_{net}}{m}>0$

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4 years ago

What was an agreement made by the Allies at the Potsdam Conference?

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Settled the arrangements for post war Europe.

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3 years ago

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What did Marie Curie achieve during her career? Check all that apply.

KatRina [158]

Answer:

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