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Sedbober [7]
2 years ago
5

20) What is the minimum energy required to ionize a hydrogen atom in the n = 2 state?

Physics
1 answer:
Vedmedyk [2.9K]2 years ago
8 0

The minimum energy required to ionize a hydrogen atom in the n = 2 state is -1.51 eV. Option B is corect.

<h3>What is hydrogen?</h3>

The chemical element hydrogen has the atomic number 1 and the symbol H. The smallest element is hydrogen.

The second excited state matches n=3. The minimum energy required to ionize a hydrogen atom in the n = 2 state  is;

\rm E= -  \frac{13.6}{n^2} \\\\ \rm E= \frac{13.6}{3^2} \\\\ E= - \frac{13.6}{9} \\\\ E= -1.51 \ eV

The minimum energy required to ionize a hydrogen atom in the n = 2 state is -1.51 eV

Hence, option B is corect.

To learn more about the hydrogen refer to:

brainly.com/question/11837837

#SPJ1

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While driving north at 25 m/s during a rainstorm you notice that the rain makes an angle of 38 degrees with the vertical. while
ikadub [295]

While returning back in opposite direction driver see that rain drops are falling vertically down

so horizontal speed of rain with respect to driver must be Zero

while moving towards the north direction driver see that the rain drops makes an angle 38 degree with the vertical

tan\theta = \frac{v_y}{v_x}

tan38 = \frac{v_y}{25 + 25}

v_y = 39 m/s

so the speed of rain is

v = \sqrt{25^2 + 39^2}

v = 46.3 m/s

also the angle is given as

\theta = tan^{-1}\frac{39}{25}

\theta = 57.3 degree

8 0
4 years ago
Assume that Young’s modulus for a new material is known to be 2.25 × 1011 /2
Lady bird [3.3K]

Answer:

Maximum force, F_{max} = 42 kN

Explanation:

Maximum Stress, \sigma_{max} = 2.1 * 10^{7}  N/m^{2}

The diameter of the material, d = 50.5 mm = 0.0505 m

The area of the material, A = (\pi d^{2} )/4

A = \frac{\pi * 0.0505^{2} }{4} \\A = 0.002 m^{2}

The formula for the maximum stress that the material can take is given by:

\sigma_{max} = \frac{F_{max} }{A} \\2.1 * 10^7 = \frac{F_{max} }{0.002}\\F_{max} = 2.1 * 10^7 * 0.002\\F_{max} = 4.2 * 10^4 N\\F_{max} = 42 kN

4 0
3 years ago
A bus accelerates away from the bus stop at 2.5 m/s2
Marysya12 [62]

Explanation:

F=k.g m\s2

=2.5 m\s2 14000k.g

= 35000N

4 0
3 years ago
Can someone help me due at 1:00 PM plus 100 points <br><br>questions B,C,D
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<h3>b. ML </h3><h3>c. M</h3><h3>d. Kg</h3>

<h3>Hope it helps...</h3>
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3 years ago
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3 years ago
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