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bezimeni [28]
3 years ago
12

The Bohr model of the atom explained why emission spectra are discrete. It could also be used to explain the photoelectric effec

t. Which is a correct explanation of the photoelectric effect according to the model? Electrons are emitted with more speed when brighter light strikes them. Electrons need small amounts of energy to be released from an atom. Electrons move between levels only if they are hit by the right frequency of light. Electrons need specific amounts of energy to jump levels and be emitted.
Physics
2 answers:
dimaraw [331]3 years ago
8 0

Answer:

Electrons need specific amounts of energy to jump levels and be emitted.

Explanation:

According to Bohr's model, electrons are in quantified orbits. That is, they can only jump to higher energy levels if the energy of the absorbed photon is equal to or greater than a certain value. Therefore, if an electron absorbs the energy of a photon and it has more energy than a certain defined quantity for each material, the electron is emitted.

Phantasy [73]3 years ago
3 0
Electrons need specific amount of energy to jump levels and to emit energy
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Jupiter's moon Io has a radius of 1.82 ✕ 106 m and a measured gravitational field of 1.80 m/s2. What is its mass (in kg)?
AveGali [126]

Answer:

8.94*10^22 kg

Explanation:

Given that

Mass of Lo, M = ?

Radius of Lo, r = 1.82*10^6 m

Acceleration on Lo, g = 1.80 m/s²

Gravitational constant, G = 6.67*10^-11

Using the formula

g = GM/r²

Solution is attached below

Answer is 8.94*10^22 kg

7 0
3 years ago
Use the mass spectrum of europium to determine the atomic mass of europium. where the peak representing eu-151 has an exact mass
slavikrds [6]

Answer: The atomic mass of a Europium atom is 151.96445 amu.

From the given information:

Percent intensity is 91.61% of Europium atom of molecular weight 150.91986 amu.

Percent intensity is 100.00% of Europium atom of molecular weight 152.92138 amu.

Abundance of Eu-151 atom:

X_{Eu-151}=\frac{0.9161}{0.9161+1.000}=0.4781

Abundance of Eu-153 atom:

X_{Eu-153}=\frac{1.000}{0.9161+1.000}=0.5219

Atomic mass of Europium atom:

A=(X_{Eu-151}\times150.91986+X_{Eu-153}\times152.92138)amu\\A=(0.4781\times150.91986+0.5219\times152.92138)amu=151.96445 amu

Therefore, the atomic mass of a Europium atom is 151.96445 amu.

3 0
3 years ago
Read 2 more answers
Pls help me with this fast. I will mark brainiest
denis23 [38]

Answer:

a) 70, 95

b) 95-70= 25cc

c) density= mass/volume

102/25

=4.08g/cc

5 0
3 years ago
Can some one help me with this question its hard :( down below ill give brainliest
eduard

Answer:  B

Explanation:

8 0
3 years ago
A _______ is a series of waves that come ashore at interval 10-45 mintues​
Nostrana [21]

Answer:

tsunami

Explanation:

A tsunami is a series of waves that come ashore at interval 10-45 mintues

3 0
2 years ago
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