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coldgirl [10]
3 years ago
14

C. How is EM created?

Chemistry
2 answers:
diamong [38]3 years ago
7 0
Electromagnetic waves are formed when an electric couples with a magnetic field Magnetic and electric fields of an electromagnetic wave are perpendicular to each other and to the direction of the wave.
Arada [10]3 years ago
6 0
EM is created by moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light
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An electron confined in a one-dimensional box is observed, at different times, to have energies of 12 eV, 27 eV, and 48 eV. What
Fynjy0 [20]

Answer:

l=3.5*10^{-10}m

Explanation:

From the question we are told that:

1st Energy     E_1=12eV=4(3eV)

2nd Energy  E_2=27eV=9(3eV)

3rd Energy   E_3=48eV=16(3eV)

 

Generally the equation for Energy E for electron in one dimensional box at ground state E_0 is mathematically given by

  E_0=\frac{h}{8ml^2}

  E_0=\frac{h}{8ml^2}

Therefore Length a is mathematically given as

l=\sqrt{\frac{h^2}{8mE_0} }

l=\sqrt{\frac{(6.625*10^{-34})^2}{8(9.1*19^{-31}{(3eV(1.6*10^{-19}))}}

l=3.5*10^{-10}m

8 0
2 years ago
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tamaranim1 [39]

Th correct answer is option C. Calling can be hazardous because it also attracts parasites and predators.

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7 0
3 years ago
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It depends on the Chemical the Substance has. The more Chemicals, the better the Substance gets when its mixed with another.
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According to the Octet Rule, an element is most stable with ______________ valence electrons
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