Answer:
E = -8.23 10⁻¹⁷ N / C
Explanation:
In the Bohr model, the electric potential for the ground state corresponding to the Bohr orbit is
E = k q₁ q₂ / r²
in this case
q₁ is the charge of the proton and q₂ the charge of the electron
E = - k e² / a₀²
let's calculate
E = - 9 10⁹ (1.6 10⁻¹⁹)² / (0.529 10⁻¹⁰)²
E = -8.23 10⁻¹⁷ N / C
The correlation is 19 percent. That means there is a significant dependency of aggressive behaviour of the people on the time spent on playing video games.
It means that the more one spends time on playing video games, the more aggressive one becomes. In other words people playing video games for significant duration develop aggressive behaviour. Also, people who play less of video games are less aggressive.
19% of persons are aggressive because they spend a lot of time playing video games.
19 % of Less aggressive persons are found spend less time on playing video games.
We can say that these relations are true to a confidence level, as there have been a lot of (21) controlled experiments to support this fact.
Answer:
Por ela ter batido na trave, não tem como voltar 2x mais forte, por que toda ação correspondente a uma reação de igual intensidade, mas que atua no sentido oposto
Explanation:
The work done is 8427 J while the energy expended is 80.25 W.
<h3>What is work done?</h3>
Work done is defined as the product of the force and the distance. We know that the work done in a gravitational field is given as;
W = mgh
Total mass of the water bucket and chain = 13.9 kg + 19.3 kg = 33.2Kg
Distance covered = 25.9 m
W = 33.2Kg * 9.8 m/s^2 * 25.9 m
W = 8427 J
Recall that the work done = Energy expended
Power = Energy expended/ Time
Power = 8427 J/ 1.75 * 60 seconds
Power = 80.25 W
Learn more about work and energy:brainly.com/question/17290830
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Answer:
50.76°
Explanation:
To find the angle between the two polarizers, you take into account that each polarizing sheet reduces the intensity of the light. Then, you have:
After the unpolarized light crosses the first polarizer:
After light crosses the second polarizer:
θ: angle between the two polarizing sheets
When the light emerges from the second polarizer the intensity of the light is 0.2 times the initial intensity, then you have:
hence, the angle between the polarizing sheets is 50.76°