In Niels Bohr’s model of the atom, how are electrons configured?
2 answers:
The statement "like planets orbiting the sun" best explains the Bohr's model. Niels Bohr postulated that electron revolve around the nucleus in specific orbitals which are quantized. These orbits are represented by the letters K.L.M,N. The maximum number of electrons in each orbit is determined by , where n is the number of the orbit. When an electron absorbs energy it moves to a higher orbit, and it moves to a lower orbit when it emits energy. This movement produces discrete spectra which explains the reason for quantized energy levels.
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Answer:
The minimum inductance needed is 2.78 H
Explanation:
Given;
frequency of the AC, f = 26.5 Hz
the root mean square voltage in the circuit, = 41.2 V
the maximum current in the circuit, I₀ = 126 mA
The root mean square current is given by;
The inductive reactance is given by;
The minimum inductance needed is given by;
Therefore, the minimum inductance needed is 2.78 H
Answer:
v = 384km/min
Explanation:
In order to calculate the speed of the Hubble space telescope, you first calculate the distance that Hubble travels for one orbit.
You know that 37000 times the orbit of Hubble are 1,280,000,000 km. Then, for one orbit you have:
You know that one orbit is completed by Hubble on 90 min. You use the following formula to calculate the speed:
hence, the speed of the Hubble is approximately 384km/min