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wel
3 years ago
12

What theory held that the earth was the center of the universe and that the sun, moon, and planets revolved around it?

Physics
1 answer:
zvonat [6]3 years ago
7 0
The geocentric theory
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A ___________ spreads from one machine to another rapidly without human action
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Answer: Worm

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Problem 2: A rock is dropped from a cliff. If it falls for 10 seconds, what is its displacement?​
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Answer:

100 feet

Explanation:

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Object A has mass mA = 9 kg and initial momentum vector pA,i = < 20, -6, 0 > kg · m/s, just before it strikes object B, wh
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Answer:

p= kg m/s

Explanation:

Momentum is a vector quantity that represents the "amount of motion" of an object.

Mathematically, the momentum of an object is given by

p=mv

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v is the velocity

Since momentum is a vector, it also has a direction, which is the same as the velocity.

Therefore, if we have two objects, the total momentum of the two objects will be obtained from the vector sum of the individual momenta of the two objects.

In this problem we have:

p_A=  kg m/s is the momentum of object A

p_B = kg m/s is the momentum of object B

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3 years ago
All organisms in Kingdom Animalia are multicellular, meaning their bodies are composed of more than one cell. Which other charac
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Well,

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If a 10kg block is at rest on a table and a 1200N force is applied in the eastward direction for 10 seconds, what is the acceler
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Answer:

a = 120 m/s²

Explanation:

We apply Newton's second law in the x direction:

∑Fₓ = m*a Formula (1)

Known data

Where:

∑Fₓ: Algebraic sum of forces in the x direction

F: Force in Newtons (N)

m: mass (kg)

a: acceleration of the block (m/s²)

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Problem development

We replace the known data in formula (1)

1200 = 10*a

a = 1200/10

a = 120 m/s²

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