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CaHeK987 [17]
2 years ago
7

What element do most of the polyatomic ions have in the formula?

Physics
1 answer:
lubasha [3.4K]2 years ago
4 0

Answer:

oxygen..............

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The two waves shown below pass through the same medium in the phases shown and interfere with each other.
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A. W

Explanation:

The wave that would be produced by the interaction of the two waves shown in the diagram is wave W.

There is no wave in the diagram W.

This type of interference is known as destructive interference.

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Fiora starts riding her bike at 18 mi/h. After a while, she slows down to 12 mi/h, and maintains that speed for the rest of the
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Answer:

t = 2.5 hours

Explanation:

given,

speed of the bike for t time= 18 mi/h

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total distance, D = 69 miles

total time, T= 4.5 hour

time for which speed of the bike is 18 mi/h = ?

we know distance = speed x time

now,

18 x t + 12 (4.5 - t) = 69

6 t + 54 = 69

6 t = 15

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The bike was at the speed of 18 mi/h for 2.5 hours.

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