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shusha [124]
3 years ago
13

The total sum of atoms in an object.

Physics
1 answer:
Darina [25.2K]3 years ago
4 0

Answer:

Mass

Explanation:

The total sum of atoms in an object is the mass of the object. There are several ways to quantify the number of atoms in a substance.

  • In chemical calculations, the number of moles is a good representation of the number of atoms contained in a body.
  • Mass is the amount of substances a body has.
  • If we can sum up all the atoms in a substance, one will arrive at the mass of the substance
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N = 9 × 10−6 C / 1.6 × 10−19 C
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How do you make magnetic and static forces strong or week?
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Which scientist was the first to use the telescope in astronomy
Mashutka [201]

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Galileo Galilei

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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Answer:

962291.57928 m²

Explanation:

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

I = Intensity = \dfrac{P}{A}=\dfrac{P}{4\pi r^2}

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

The area of the must be 962291.57928 m²

3 0
3 years ago
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