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const2013 [10]
3 years ago
7

The bright light emission spectrums below are seen through a spectroscope. The unknown sample is a mixture of the

Physics
1 answer:
kirill115 [55]3 years ago
3 0

Answer:

gases Z and Y.

Explanation:

Photons are emitted when electrons jump from a higher energy level to lower energy level and these photons carry light energy.

The light emitted at various wavelengths produce emission spectrum, when viewed via a spectroscope.

While analyzing the image, we could see that the spectrum of unknown sample contains the gases Z and Y.

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The 0.5kg soccer ball moves toward the net with a force of 4N. What is its acceleration?​
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Answer:

8 m/s²

Explanation:

Given,

Force ( F ) = 4 N

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To find : -

Acceleration ( a ) = ?

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F = ma

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A 500 gram mass attached to a horizontal spring
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4 years ago
The weight of a standard object defined as having a mass of exactly 2.9 kg is measured to be 28.449 n. in the same laboratory, a
PtichkaEL [24]
Mass of the object m = 2.9 kg 
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4 0
4 years ago
Read 2 more answers
A 4.0 Ω resistor has a current of 3.0 A in it for 5.0 min. How many electrons pass 3. through the resistor during this time inte
musickatia [10]

Answer:

Number of electrons, n=5.62\times 10^{21}

Explanation:

It is given that,

Resistance, R = 4 ohms

Current, I = 3 A

Time, t = 5 min = 300 s

We need to find the number of electrons pass through the resistor during this time interval. Let the number of electron is n.

i.e. q = n e ...............(1)

And current, I=\dfrac{q}{t}

I\times t=n\times e

n=\dfrac{It}{e}

e is the charge of an electron

n=\dfrac{3\ A\times 300\ s}{1.6\times 10^{-19}}

n=5.62\times 10^{21}

So, the number of electrons pass through the resistor is 5.62\times 10^{21}. Hence, this is the required solution.

6 0
3 years ago
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