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2 years ago

Select all that apply. Quarks are thought to be the basic component of _____. protons electrons neutrons

2 answers:

5 0

Answer: protons and neutrons.

Justification:

Contrary to the belief of some years ago, protons and neutrons are not considered elementary or fundamental particles any more.

Electrons remain being considered elementary particles.

All three, protons, electrons and neutrons are subatomic partilces, but the only elemental particle of them is the electron.

That means that protons and neutrons are composite particles (they are composed by other smaller, elementary particles).

Those particles that constitute the protons and neutrons are the quarks, as stated by the question.

KengaRu [80]2 years ago

3 0

Quarks are types of particles and a basic constituent of matter. They <span>form composite particles called hadrons when they combine.
They are fundamental components of Protons and neutrons.</span>

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The force between two charges, q, and 92, is F. If the distance between the

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Explanation:

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1 year ago

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2 years ago

A plane monchromatic radio wave (lambda = 0.3 m) travels in vacuum along the positive x-axis, with an intensity I = 45 W/m2. Sup

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Answer:

$-5.78414\times 10^{-6}\ T$

Explanation:

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c = Speed of light = $3\times 10^8\ m/s$

$\lambda$ = Wavelength = 0.3 m

T = Time period

f = Frequency

$E_0$ = Electric field

Intensity of electric field is given by

$I=\dfrac{1}{2}c\epsilon_0E_0^2\\\Rightarrow E_0=\sqrt{\dfrac{2I}{c\epsilon_0}}\\\Rightarrow E_0=\sqrt{\dfrac{2\times 45}{3\times 10^{8}\times 8.85\times 10^{-12}}}\\\Rightarrow E_0=184.11492\ N/C$

Magnetic field is given by

$B_0=\dfrac{E_0}{c}\\\Rightarrow B_0=\dfrac{184.11492}{3\times 10^8}\\\Rightarrow B_0=6.13716\times 10^{-7}\ T$

$k=\dfrac{2\pi}{\lambda}\\\Rightarrow k=\dfrac{2\pi}{0.3}\\\Rightarrow k=20.94\ /m$

$f=\dfrac{c}{\lambda}\\\Rightarrow f=\dfrac{3\times 10^{8}}{0.3}\\\Rightarrow f=1\times 10^{9}\ Hz$

$T=\dfrac{1}{f}\\\Rightarrow T=10^{-9}$

$\omega=\dfrac{2\pi}{T}\\\Rightarrow \omega=\dfrac{2\pi}{10^{-9}}\\\Rightarrow \omega=6283185307.17958\ rad/s$

Magnetic field in the z direction is given by (x=0)

$B_z=B_0(kx-\omega t)\\\Rightarrow B_z=6.13716\times 10^{-7}\times (0-6283185307.17958\times 1.5\times 10^{-9})\\\Rightarrow B_z=-5.78414\times 10^{-6}\ T$

The magnetic field at the origin is $-5.78414\times 10^{-6}\ T$

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2 years ago