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lana66690 [7]
3 years ago
9

The vertical columns in the periodic table are called _____________. families periods rows

Physics
2 answers:
denpristay [2]3 years ago
5 0

Answer:

the answer is families

Explanation:

bonufazy [111]3 years ago
4 0

Answer:

families

Explanation:

periods are horizontal

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It is the attention ability what let the older children to stay longer in one location instead of being moving between different activities. The younger children who cannot keep their attention long time in a same activity entertain themselves by changing activities.
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Why potential energy become equal to kinetic energy at height
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And kinetic energy is in motion

Explanation:

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It is proposed that a spaceship might be propelled in the solar system by radiation pressure, using a large sail made of foil. W
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962291.57928 m²

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P_r = Pressure = 2\dfrac{I}{c}  (full reflection)

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P = Power = 3.9\times 10^{26}\ W

c = Speed of light = 3\times 10^8\ m/s

M = Mass of Sun = 1.99\times 10^{30}\ kg

m = Mass of ship = 1500 kg

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

Force of radiation is given by

F_r=P_rA\\\Rightarrow F_r=2\dfrac{I}{c}\times A\\\Rightarrow F_r=2\dfrac{P}{4\pi r^2c} A

This force will balance the gravitational force as stated in the question

\dfrac{GMm}{r^2}=2\dfrac{P}{4\pi r^2c} A\\\Rightarrow A=\dfrac{4\pi cGMm}{2P}\\\Rightarrow A=\dfrac{4\times \pi\times 3\times 10^8\times 6.67\times 10^{-11}\times 1.99\times 10^{30}\times 1500}{2\times 3.9\times 10^{26}}\\\Rightarrow A=962291.57928\ m^2

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3 years ago
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Answer:

The correct answer is - option C. G.

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In this reaction diagram, there is a representation of the reaction profile. The reaction profile shows the change that takes place during a reaction in the energy of reactants or substrate and products. In this profile, activation energy looks like a hump in the line, and the minimum energy required to initiate the reaction.

The overall energy of the reaction, including or excluding activation energy depends on the nature of the reaction if it is exothermic or endothermic. and products are represented by the G which shows the difference between the energy of the reactants and products.

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