Answer:
The distance is ![D = 2.6 \ m](https://tex.z-dn.net/?f=D%20%20%3D%20%202.6%20%5C%20m)
Explanation:
From the question we are told that
The wavelength of the light is ![\lambda = 476.1 \ nm = 476.1 *10^{-9} \ m](https://tex.z-dn.net/?f=%5Clambda%20%20%3D%20%20476.1%20%5C%20nm%20%20%3D%20%20476.1%20%2A10%5E%7B-9%7D%20%5C%20m)
The distance between the slit is ![d = 0.29 \ mm = 0.29 *10^{-3} \ m](https://tex.z-dn.net/?f=d%20%3D%20%200.29%20%5C%20%20mm%20%20%3D%20%200.29%20%2A10%5E%7B-3%7D%20%5C%20m)
The between the first and second dark fringes is ![y = 4.2 \ mm = 4.2 *10^{-3} \ m](https://tex.z-dn.net/?f=y%20%3D%20%204.2%20%5C%20mm%20%20%3D%20%204.2%20%2A10%5E%7B-3%7D%20%5C%20m)
Generally fringe width is mathematically represented as
![y = \frac{\lambda * D }{d}](https://tex.z-dn.net/?f=y%20%20%3D%20%20%5Cfrac%7B%5Clambda%20%2A%20D%20%7D%7Bd%7D)
Where D is the distance of the slit to the screen
Hence
![D = \frac{y * d}{\lambda }](https://tex.z-dn.net/?f=D%20%20%3D%20%20%5Cfrac%7By%20%2A%20%20d%7D%7B%5Clambda%20%7D)
substituting values
![D = \frac{ 4.2 *10^{-3} * 0.29 *10^{-3}}{ 476.1 *10^{-9} }](https://tex.z-dn.net/?f=D%20%20%3D%20%20%5Cfrac%7B%204.2%20%2A10%5E%7B-3%7D%20%2A%20%20%200.29%20%2A10%5E%7B-3%7D%7D%7B%20476.1%20%2A10%5E%7B-9%7D%20%7D)
![D = 2.6 \ m](https://tex.z-dn.net/?f=D%20%20%3D%20%202.6%20%5C%20m)
Answer:
B = 6.18 10⁻⁶ T
the magnetic field is in the negative direction of the y axis
Explanation:
The magnetic force is given by
F = q v x B
as in the exercise indicate that the velocities perpendicular to the magnetic field,
F = q v B
Newton's second law is
F = m a
let's substitute
q v B = m a
B = m a / q v
let's calculate
B = 9.1 10⁻³¹ 2.50 10¹³ / (1.6 10⁻¹⁹ 2.30 10⁷)
B = 6.18 10⁻⁶ T
The direction of the field can be obtained with the right hand rule, where the thumb points in the direction of the velocity, the fingers extended in the direction of the magnetic field and the palm in the direction of the force for a positive charge.
In the exercise indicate that the velocity is the z axis
the acceleration and therefore the force in the x axis
therefore the magnetic field is in the negative direction of the y axis
Answer:
Chemical
Explanation:
When sodium reacts with water, sodium, being an alkali, rips away electrons from water and creates an explosion. This happens because of the chemical properties of sodium. Hope this helps!
Why space time curves in the presence of mass or energy?
Answer: A massive body such as the Earth causes gravity because matter is concentrated energy, hence E=mc². But note that a no mass photon also causes gravity, as done any kind of energy, not just mass-energy. Moreover the energy doesn't actually bend the surrounding space.
Hope this helped you!
Atomic number of phosphorus is 15
15 electrons.
Explanation:
An atom is made up of subatomic particles. These particles are:
- Protons which are positively charged.
- Electrons are negatively charged
- Neutrons carry no charges.
Atomic number is the number of protons in an atom.
For atoms that has no charge, the number of protons and electrons are the same.
On the periodic table, atoms are arranged based on their atomic number. If phosphorus is the fourth element to the right of sodium, then the atomic number of Phosphorus will be (11+4) = 15.
The atom has no charge and so the number of electrons will be 15 same as the atomic number.
Learn more:
Atomic number brainly.com/question/2057656
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