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3 years ago

15

You are standing 5 m from a loud machine. You move 10 m from the machine to help reduce the intensity of the sound. Calculate th

e change in the sound’s intensity.‏

1 answer:

Nadusha1986 [10]3 years ago

4 0

Explanation:

realy sorry but i don't know pardon mr for this

soooooooooooorrryyyyyy

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An object is thrown directly downward from the top of a very tall building. The speed of the object just as it is released is 17

Softa [21]

Answer:

distance cover is = 102.53 m

Explanation:

Given data:

speed of object is 17.1 m/s

$t_1 = 3.32 sec$

$t_2 = 5.08 sec$

from equation of motion we know that

$d_1 = vt_1 + \frac{1}{2} gt_1^2$

where d_1 is distance covered in time t1

so $d_1 = 17.1 \times 3.32 + \frac{1}{2} 9.8 \times 3.32^2$ =

$d_1 = 110.78 m$

$d_2 = vt_2 + \frac{1}{2} gt_2^2$

where d_2 is distance covered in time t2

$d_2 = 17.1 \times 5.08 + \frac{1}{2}\times9.8 \times 5.08^2$

$d_2 = 213.31 m$

distance cover is = 213.31 - 110.78 = 102.53 m

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3 years ago

defon

Answer:

Yes, a mixture can be made up of just elements and no compounds. The elements never experiance a chemical interaction and stay only in physical contact with each other.

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3 years ago

Which statement describe. good hypothesis ? Check all that apply

larisa [96]

A good hypothesis describes your ideas and how you think the experiment will conclude. Additionally, hypotheses have scientific information included.

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3 years ago

What is the greatest cause for concern regarding hydroelectric power?

nexus9112 [7]

Answer:

destroys habitats is the main one

Explanation:

eye sore can be one and it can burst causing a flood is also one :)

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Neko [114]

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