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LuckyWell [14K]
3 years ago
9

Cómo crees que la actividad física mejora tu salud mental​

Physics
1 answer:
Allushta [10]3 years ago
3 0

Answer:

Realizar actividad física te ayuda a prevenir enfermedades como: problemas cardíacos, obesidad, diabetes y cáncer. Además, mejora el humor, la autoestima y disminuye la posibilidad de desarrollar trastornos, como depresión y ansiedad.

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The initial angular velocity of a ceiling fan is 6.28 rad/s. It accelerates uniformly to 3.14 rad/s in 4.0 s. What is the angula
Talja [164]

Answer: 18.84 rad/s

Explanation:

V = u + at

V = 6.28 + (3.14 x 4 )

V = 18.84 rad/s

5 0
3 years ago
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What are the two most abundant gases in the atmosphere
HACTEHA [7]
Nitrogen (like70ish % and oxygen like 20%)
3 0
3 years ago
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Violet light of wavelength 427 nm ejects electrons with a maximum kinetic energy of 0.684 eV from a certain metal. What is the w
frutty [35]

Answer:

The work function of the metal is 2.226 eV.

Explanation:

Given;

wavelength of the violet light, λ = 427 nm = 427 x 10⁻⁹ m

maximum kinetic energy, K.E = 0.684 eV

The energy of the incident light is calculated as;

E = hf = \frac{hc}{\lambda} = \frac{6.626 \ \times \ 10^{-34} \ \times\ 3\ \times \ 10^8 }{427 \ \times \ 10^{-9}} = 4.655 \ \times \ 10^{-19} \ J\\\\1 \ eV = 1.6 \ \times \ 10^{-19} \ J\\\\E =( \frac{4.655 \ \times \ 10^{-19} \ J }{1.6 \ \times \ 10^{-19} \ J} ) \ eV\\\\E = 2.91 \ eV

Apply Einstein's photoelectric equation;

E = Ф + K.E

where;

Ф is the work function of the metal

Ф  = E - K.E

Ф  = 2.91 eV - 0.684 eV

Ф  = 2.226 eV.

Therefore, the work function of the metal is 2.226 eV.

5 0
3 years ago
24 POINTS!!!!!!!!!!!!
Karo-lina-s [1.5K]

Answer: Option (c) is the correct answer.

Explanation:

When the child is tossed up into the air then she gains kinetic energy as the child has moved from its initial position.

It is given that mass is 20 kg, velocity is 5 m/s^{2}, and height is 2 m.

Calculate the kinetic energy of child as follows.

             kinetic energy = \frac{1}{2}mv^{2}

                                      = \frac{1}{2}20 kg \times (5 m/s)^{2}

                                      = 10 kg \times 25 m^{2}/s^{2}

                                      = 250 kg m^{2}/s^{2}

Also, when child falls off the ground then she will have gravitational potential energy.

Calculate gravitational potential energy of child as follows.

            Potential energy = m × g × h

                                         = 20 kg \times 9.8 m/s^{2} \times 2 m

                                         = 392 kg m^{2}/s^{2}

3 0
3 years ago
Read 2 more answers
An asteroid is discovered in a nearly circular orbit around the Sun, with an orbital radius that is 3.83 times Earth's. What is
yKpoI14uk [10]

Answer:

About 7.5 years

Explanation:

The orbital period is proportional to the semimajor axis raised to the power of 3/2.

The orbital period is <em>also</em> inversely proportional to the square root of the sum of the masses of the sun and the asteroid; however, the sun's mass is a constant and the asteroid's mass is negligible in comparison with the sun's mass.

3 0
4 years ago
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