3 years ago

I need help quick pls . Its either physical or chemical change !

1 answer:

8 0

Physical, chemical, chemical, physical, I’m pretty sure. Natural things, like you starting to breathe heavier are physical most of the time!!!

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Vadim26 [7]

Answer:

jduruhrjrhryyrurjjrjrh4h5ghrrhrhhrhrhrhrrhrhrh sus

Explanation:

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3 years ago

koban [17]

no it doesn't why because I think that it is not the same but different.

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2 years ago

Natalija [7]

Let say for every 5 s of time interval the speed will remain constant

so it is given as

v(mi/h) 16 21 23 26 33 30 28

now we have to convert the speed into ft/s as it is given that 1 mi/h = 5280/3600 ft/s

so here we will have

v(ft/s) 23.5 30.8 33.73 38.13 48.4 44 41.1

now for each interval of 5 s we will have to find the distance cover for above interval of time

$d = v \times t$

$d = (23.5 + 30.8 + 33.73 + 38.13 + 48.4 + 44 + 41.1) \times 5$

$d = 1298.1 ft$

so here it will cover 1298.1 ft distance in 30 s interval of time

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3 years ago

PilotLPTM [1.2K]

The answer is up . tylrhscjwizn

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3 years ago

Triss [41]

<span>If we pollute the fresh water we have, there will be a shortage of clean drinking water in the future.</span>

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3 years ago