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Dimas [21]
1 year ago
5

Although studs are sometimes spaced 24" O.C. in residential structures, a spacing of_____ O.C. is more commonly used.

Engineering
1 answer:
Allisa [31]1 year ago
4 0

Answer:

B. 16

Explanation:

hope this helps

 - Leila

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Marco is a franchisee with Daggies, a chain of sandwich shops. His business was doing well until several Daggies franchisees got
Oliga [24]

Answer:

The coattail effect

Explanation:

Clearly, the Daggies franchise were a huge part of Marco's success and attracted many customers for the business. This is why Marco deteriorated as soon as many Daggies franchisees closed.

The coattail effect is the phenomenon where an influencing member in a party (franchisee in this case)  contributes largely to the success of another, which is the case with Marco and Daggies

3 0
3 years ago
An excited electron in an Na atom emits radiation at a wavelength 589 nm and returns to the ground state. If the mean time for t
11Alexandr11 [23.1K]

Answer:   Inherent width in the emission line: 9.20 × 10⁻¹⁵ m or 9.20 fm

                length of the photon emitted: 6.0 m

Explanation:

The emitted wavelength is 589 nm and the transition time is ∆t = 20 ns.

Recall the Heisenberg's uncertainty principle:-

                                 ∆t∆E ≈ h ( Planck's Constant)

The transition time ∆t corresponds to the energy that is ∆E

E=h/t = \frac{(1/2\pi)*6.626*10x^{-34} J.s}{20*10x^{-9} } = 5.273*10x^{-27} J =  3.29* 10^{-8} eV.

The corresponding uncertainty in the emitted frequency ∆v is:

∆v= ∆E/h = (5.273*10^-27 J)/(6.626*10^ J.s)=  7.958 × 10^6 s^-1

To find the corresponding spread in wavelength and hence the line width ∆λ, we can differentiate

                                                    λ = c/v

                                                    dλ/dv = -c/v² = -λ²/c

Therefore,

      ∆λ = (λ²/c)*(∆v) = {(589*10⁻⁹ m)²/(3.0*10⁸ m/s)} * (7.958*10⁶ s⁻¹)

                                 =  9.20 × 10⁻¹⁵ m or 9.20 fm

     The length of the photon (<em>l)</em> is

l = (light velocity) × (emission duration)

  = (3.0 × 10⁸  m/s)(20 × 10⁻⁹ s) = 6.0 m          

                                                   

6 0
3 years ago
Need help right now pls
LenaWriter [7]
Put them in 2,4,1,3 and got in 100 in the test
7 0
3 years ago
Que os vizinhos diziam sempre aq lenhador? Responda com elementos do texto.​
Alecsey [184]

Answer:

shsisdnd ajwdhdjeo sisksdne suspended wowodndjd

4 0
3 years ago
What branch of chemistry is credited with the development of silicone?
mariarad [96]

Answer:

C). Inorganic Chemistry

Explanation:

Inorganic chemistry is characterized as the branch of chemistry that deals with the elements(including carbon) and those compounds which do not contain carbon includes minerals, metals, inorganic, organometallic compounds. As we know, <u><em>'Silicone' is characterized as a semi-inorganic polymeric compound</em></u> that possesses a wide range of thermal stability and extreme water repellence. Thus, it is classified as a part of inroganic chemistry. Hence, <u>option C</u> is the correct answer.

8 0
2 years ago
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