Answer: Elements in the same period have the same number of electron shells; moving across a period ( elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.
That theory is known as Kinetic theory of matter of Kinetic molecular theory.Here, 3rd one would be the best.
In short, Your Answer would be Option C
Hope this helps!
Answer:
20cm
Explanation:
Im not sure so double check it
Answer: 24 N
Explanation:
Given that the
Mass m = 4 kg
Coefficient of friction (μ) = 0.60
To calculate the static friction between the block and the table before any attempted motion, you will use the formula; F = (μ)N
Where
F = static friction
N = normal reaction = mg
g = acceleration due to gravity = 9.8 m/^2
Substitutes m, g and (μ) into the formula
F = 0.6 × 4 × 9.8
F = 23.52 N
Therefore, the static friction between the block and the table before any attempted motion is 24 N approximately.
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