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dezoksy [38]
2 years ago
11

Which substances are inorganic? Check all that apply.

Physics
1 answer:
bezimeni [28]2 years ago
3 0

The major characteristic an organic compound has which an inorganic

compound doesn't  have is the presence of carbon atoms in the molecule.

This helps us to differentiate the compounds into their respective divisions.

Inorganic compounds

  • K2CO3
  • Fe3O4

Organic compounds

  • C6H12O6
  • C4H10
  • C27H46O

We can observe that inorganic compounds lack carbon atoms which makes

the answer valid.

Read more about inorganic compounds on brainly.com/question/2169750

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4 0
2 years ago
Calculate the highest frequency X-rays produced by 8.00 · 104 eV electrons. _____ Hz
lys-0071 [83]
When an electron stops, it emits a photon with energy equal to the kinetic energy lost by the electron:
E=\Delta K
The energy of the photon is E=hf where h=6.63 \cdot 10^{-34} Js is the Planck constant and f is the frequency. Therefore, the maximum frequency of the emitted photon occurs when the loss of kinetic energy is maximum.

The maximum loss of kinetic energy of the electron occurs when the electron stops completely, so it loses all its energy:
\Delta K = 8\cdot 10^4 eV
Keeping in mind that 1 eV=1.6 \cdot 10^{-19}J, we have
\Delta K = 8 \cdot 10^4 eV \cdot 1.6 \cdot 10^{-19}J/eV = 1.28 \cdot 10^{-14}J

And so, this corresponds to the energy of the emitted photon, E. Therefore, we can find the maximum frequency of the emitted photon:
f= \frac{E}{h} = \frac{1.28 \cdot 10^{-14}J}{6.63 \cdot 10^{-34}Js}=1.93 \cdot 10^{19}Hz
5 0
3 years ago
Which of the following is true concerning the pannes in salt marshes?
Anni [7]

Answer:it’s A

Explanation:

6 0
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Some of the standing waves in an organ pipe open at both ends have the following frequencies: 100 Hz, 200 Hz, 250 Hz, and 300 Hz
Vitek1552 [10]
Given there is a standing wave a 200 and 250Hz, and there are none between 250 and 300Hz, we know that the difference in frequency between each harmonic is 50Hz.

Therefore, the fundamental frequency (the lowest that can be achieved), is 50Hz, as it is 0+the difference in frequency between each harmonic.

The third harmonic is 3x50 = 150Hz, as the 1st harmonic is the fundamental frequency, the 2nd is the fundamental frequency plus the difference between each harmonic and so on.
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what does "sppse" mean ?

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