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erica [24]
3 years ago
10

When does a scientist create the conclusion?

Physics
1 answer:
Lerok [7]3 years ago
7 0
After they have gathered enough information by testing the theory.
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A sled with a mass of 32 kg is being pulled across the snow. If the friction force between the sled and the ground is 12 N, what
Sergeeva-Olga [200]

Answer:

Fa= 47.2N

Explanation:

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3 years ago
Violet light of wavelength 427 nm ejects electrons with a maximum kinetic energy of 0.684 eV from a certain metal. What is the w
frutty [35]

Answer:

The work function of the metal is 2.226 eV.

Explanation:

Given;

wavelength of the violet light, λ = 427 nm = 427 x 10⁻⁹ m

maximum kinetic energy, K.E = 0.684 eV

The energy of the incident light is calculated as;

E = hf = \frac{hc}{\lambda} = \frac{6.626 \ \times \ 10^{-34} \ \times\ 3\ \times \ 10^8 }{427 \ \times \ 10^{-9}} = 4.655 \ \times \ 10^{-19} \ J\\\\1 \ eV = 1.6 \ \times \ 10^{-19} \ J\\\\E =( \frac{4.655 \ \times \ 10^{-19} \ J }{1.6 \ \times \ 10^{-19} \ J} ) \ eV\\\\E = 2.91 \ eV

Apply Einstein's photoelectric equation;

E = Ф + K.E

where;

Ф is the work function of the metal

Ф  = E - K.E

Ф  = 2.91 eV - 0.684 eV

Ф  = 2.226 eV.

Therefore, the work function of the metal is 2.226 eV.

5 0
3 years ago
2
Delvig [45]

The correct option is A. the isobaric process represented by the PV diagram

<h3>What is  isobaric process?</h3>
  • An Isobaric method is a thermodynamic revolution taking place at consistent pressure. The period isobaric has been derived from the Greek words “iso” and “baros” indicating equal intimidation.
  • As such, the continued pressure is obtained when the importance is expanded or acquired. This basically neutralizes any pressure change due to the transfer of heat.
  • In an isobaric procedure, when the heat is transferred to the system some work is done. Nevertheless, there is even a change in the internal energy of the system.
  • This additionally means that no amounts as in the first law of thermodynamics evolve zero.

To learn more about isobaric process, refer to:

brainly.com/question/13040268

#SPJ9

5 0
2 years ago
What is the name of the process the puts adenosine diphosphate (ADP) and phosphate (P) together to reform ATP?
hoa [83]
I think the correct answer is hydrolysis. The name <span>of the process that puts adenosine diphosphate (ADP) and phosphate (P) together to reform ATP is called hydrolysis. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
6 0
3 years ago
Based on the image below what would an observer on the nighttime side of earth observe?
sertanlavr [38]
I would love to help; where’s the picture?
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3 years ago
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