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pashok25 [27]
3 years ago
14

It is possible for an excited hydrogen atom to return to the ground state by the emission of a single photon. regardless of the

initial excited state, this electron transition produces a spectral line in which region of the electromagnetic spectrum?
1. ultraviolet
2. infrared
3. visible light
4. radio waves
Physics
1 answer:
RSB [31]3 years ago
8 0

Answer:

1. Ultraviolet

Explanation:

This is called the Balmer series. Transitions ending in the ground state (n = 1) are called the Lyman series, but the energies released are so large that the spectral lines are all in the ultraviolet region of the spectrum.

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What is the best description of the destructive interference of light?
Helga [31]

Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave.

Answer:

The crest of one wave overlaps the trough of another.

8 0
3 years ago
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The battery capacity of a lithium ion battery in a digital music player is 750 mA-h. The manufacturer claims that the player can
Oksi-84 [34.3K]

Answer:

The number of electrons is 6.3\times10^{21}\ electrons

(D) is correct option.

Explanation:

Given that,

Battery capacity = 750 mA-h

Time t= 8 hours

Time t'=3 hours

We need to calculate the battery capacity

Battery\ capacity=750\times10^{-3}\times3600

Battery\ capacity=2700\ A-s

We need to calculate the number of electrons in 1 C Li

Using formula for number of electron

n=\dfrac{1}{e}

n=\dfrac{1}{1.6\times10^{-19}}

n=6.25\times10^{18}\ electrons

We need to calculate the number of electron in 2700 C

2700\ C=2700\times6.25\times10^{18}=1.68\times10^{22}\ electrons

The total number of electrons battery can deliver in 8 hours

n=1.68\times10^{22}\ electrons

We need to calculate the number of electron in 3 hours

Using formula of number of electrons

n=\dfrac{n\times t'}{t}

Put the value into the formula

n=\dfrac{1.68\times10^{22}\times3}{8}

n=6.3\times10^{21}\ electrons

Hence, The number of electrons is 6.3\times10^{21}\ electrons

8 0
4 years ago
Read 2 more answers
Which of the following displays has the highest hz frequency
Ganezh [65]

Answer:

Plasma

Explanation:

3 0
3 years ago
What is the displacement of this time velocity graph i need help asap
maw [93]

Answer:

b is the answer

Explanation:

because i did this before

3 0
4 years ago
A ray of light contains two colors: red with wavelength of 660 nm and blue with wavelength 470 nm. The ray passes through two na
densk [106]

Answer:

The distance on the screen between the first-order bright fringes  for each wavelength is 3.17 mm.

Explanation:

Given that,

Wavelength of red = 660 nm

Wavelength of blue = 470 nm

Separated d= 0.30 mm

Distance between screen and slits D= 5.0 m

We need to calculate the distance for red wavelength

Using formula for distance

y=\dfrac{\lambda D}{d}

Where, D = distance between screen and slits

d = separation of slits

Put the value into the formula

y=\dfrac{660\times10^{-9}\times5.0}{0.30\times10^{-3}}

y=11\ mm

For blue wavelength,

Put the value into the formula again

y'=\dfrac{470\times10^{-9}\times5.0}{0.30\times10^{-3}}

y'=7.83\ mm

We need to calculate the distance on the screen between the first-order bright fringes for each wavelength

Using formula for distance

\Delta y=y-y'

\Delta y=11-7.83

\Delta y=3.17\ mm

Hence, The distance on the screen between the first-order bright fringes  for each wavelength is 3.17 mm.

4 0
4 years ago
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