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mrs_skeptik [129]
4 years ago
13

How does emission spectra occur?

Physics
1 answer:
Lerok [7]4 years ago
4 0

The frequencies of light that an atom can emit are dependent on states the electrons can be in. When excited, an electron moves to a higher energy level or orbital. When the electron falls back to its ground level the light is emitted.

hope this helped:)

mark brainliest

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An RC circuit takes t = 2.5 ms to charge to 35% of its full charge after it weas connected to a battery, What is the total time
marin [14]

Answer: time taken to charge to 95%

t = -5.80[ln(1-0.95)]

t = 17.38ms

Explanation:

For an RC Charging circuit

Where Vs

Vc = Vs (1 - e^(-t/RC))

Vc/Vs = 1 - e^(-t/RC)

-t/RC = ln(1 - Vc/Vs)

t = -RC[ln(1 - Vc/Vs)] and RC = k = -t/ln(1 - Vc/Vs)

Where ;

Vc = voltage across the capacitor

Vs = voltage supply

t = charging time = 2.5ms

k = RC = time constant.

Vc/Vs = 0.35

To calculate the time constant k;

k = -t/ln(1- Vc/Vs)

k = -2.5/ln(1-0.35)

k = 5.80ms

time taken to charge to 95%

t = -5.80[ln(1-0.95)]

t = 17.38ms

4 0
3 years ago
A dog walks 26m, East, 29m, West, and 7m, East. What is his displacement?
sergeinik [125]

Answer:

4m East

Explanation:

26-29= -3 (so that means 3m west)

-3+7= 4 (so 4m East)

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7 0
3 years ago
Help it’s number 5. Helpppppppppppppoppppppppppppp
aliina [53]

Answer:

The heat may have stopped being added, because the heat is exactly what is causing the change. There are horizontal lines because of that, and when the heat resumes, the line peaks up.

Explanation:

3 0
3 years ago
What is a vector? Please help!
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A quantity having direction as well as magnitude,especially as determining the position of one point in space relative to another.
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Select the statement that correctly completes the description of phase difference.
KengaRu [80]

Answer:

The difference in the phase angle between any two waves at any given position along the waves.

Explanation:

Phase difference describes  the difference in the phase angle between any two waves at any given position along the waves. The equation of wave is given by :

Wave 1, y=A\ sin(\omega t)

Wave 2, y=A\ sin(\omega t+\phi)

Where

A is the amplitude of wave

\omega is the angular frequency

\phi is the phase difference between two waves

If \Delta d is the path difference, it is given by :

\Delta d=d\ sin\theta

Hence, the correct option is (a) "the difference in the phase angle between any two waves at any given position along the waves".

3 0
4 years ago
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