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3 years ago

8

When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regardi

ng the decomposition process?

2 answers:

IceJOKER [234]3 years ago

7 0

B because the the organism is changing into another chemical form

nalin [4]3 years ago

3 0

The answer is C. Decomposition is a chemical change because the organism is broken down into new substances.

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A rock is thrown horizontally from a high building at 33.8 m/s. What is the magnitude of its velocity 4.25 s later?

Alex17521 [72]

<h2>Answer:53.63 $ms^{-2}$ </h2>

Explanation:

The equations of motion used in this question is $v=u+at$

When a object is projected horizontally from a sufficiently height,the x-component of acceleration remains zero because there is no force that drags the object in x direction.

But,due to gravity,the object accelerates downward at a rate of $9.8ms^{-2}$ .

In X-Direction,

Given that initial velocity= $u_{x}$ = $33.8ms^{-1}$

Using $v=u+at$ ,

$v_{x}=33.8+(0)4.25=33.8ms^{-1}$

In Y-Direction,

Given that initial velocity= $u_{x}$ = $0ms^{-1}$

Using $v=u+at$ ,

$v_{y}=0+(9.8)4.25=41.65ms^{-1}$

$v=\sqrt{v_{x}^{2}+v_{y}^{2}}$

$v=\sqrt{1142.44+1734.72}=\sqrt{2877.163}=53.63ms^{-1}$

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3 years ago

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6. Drop to one quarter of its original value

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2 years ago

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Kobotan [32]

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2 years ago

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3 years ago

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