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creativ13 [48]
3 years ago
14

The Mass of the Sun is 1.989 × 10^30 kg. The speed of light is 3 x 10^8 m/s. Assuming the Sun is 75% hydrogen, how much Energy c

ould be produced if all of the hydrogen is converted into energy? Use Einstein's famous equation E = mc^2 where E will be in Joules.
Physics
1 answer:
bogdanovich [222]3 years ago
8 0

Answer:

E = 13.428 \times 10^{46} J

Explanation:

Mass of the Sun = 1.989 \times 10^{30} Kg

Amount of Hydrogen = 75% of Mass of Sun,

thus mass of Hydrogen (m) in the Sun is,

m = 1.989 \times 10^{30} \times \frac{75}{100}

m = 1.492 \times 10^{30}

Speed of Light (c) = 3 \times 10^{8} m/s

Thus, energy(E) produced if whole of hydrogen is converted into energy,

E = mc²

E = 1.492 \times 10^{30} \times (3 \times 10^{8} )^{2}

E = 1.492 \times 9 \times 10^{46}

E = 13.428 \times 10^{46} J

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I attached the full question.
We know that for a parallel-plate capacitor the surface charge density is given by the following formula:
\sigma=\varepsilon_0 \frac{V}{d}
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V=Ed
Voltage is analog to the mechanical work done by the force.
Above formula is correct only If the field is constant, and we can assume that it is since no function has been given.
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\sigma=\varepsilon_0 \frac{Ed}{d}=\varepsilon_0E\\
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Please note that elecric permittivity of air is very close to  elecric permittivity of vacum, it is common to use them <span>interchangeably</span>.

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3 years ago
How are the electric field lines around a positive charge affected when a second positive charge is near it?
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4 0
3 years ago
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A blank is any disturbance that carries energy from one place to another through matter and space.
Eduardwww [97]
<h3>Answer;</h3>

<em>A wave </em>

<em><u>A wave</u></em> is any form of a disturbance that carries energy from one place to another through a matter and space

<h3>Explanation;</h3>
  • Waves carry energy from one point, the source to another point or place. The transmission of a wave may occur through the space or through a material medium.
  • Electromagnetic waves are those waves whose transmissions occurs through the space, they do not require material medium for transmission,for example, radio waves, while mechanical waves are those that require material medium for transmission, for example sound waves.
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weqwewe [10]

Answer:

"h" signifies Planck's constant

Explanation:

In the equation energy E = h X v

The "h" there signifies Planck's constant

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Planck's constant, "h" is usually expressed in Joules second

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