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ValentinkaMS [17]
3 years ago
7

Describe what it means if a chemical or physical property is periodic

Physics
1 answer:
vesna_86 [32]3 years ago
6 0
It means that you consider the elements as a list organized by atomic number, the property is seen to repeat over and over as you move through that list.
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Can you provide the multiple choices​ ?
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A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. How long does it take the ball to reach t
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Answer:

3 seconds

Explanation:

Applying,

Applying,

v = u±gt................ Equation 1

Where v = final velocity, u = initial velocity, t = time, g = acceleration due to gravity.

From the question,

Given: v = 0 m/s ( at the maximum height), u = 30 m/s

Constant: g = -10 m/s

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2 years ago
Which simple machine is a doorknob?
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1. The geologic time scale divides time into years and centuries, true or false
hodyreva [135]

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The answer is "False"

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5 0
2 years ago
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