Physics, 26.09.2019 23:30 mathman783

An atoms emmission of light with a specific amount of energy confirms

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Answer from: shelbyp2003

The quantum theory

Explanation:

The theory that assumes that energy exists in individual units called quanta, in the same way that matter has individual atomic units.

Answer from: loveyeti106838

An atom’s emission of light with a specific amount of energy confirms that the electrons inside the atoms emit and absorb energies according to the position around a nucleus.

Explanation:

The atoms of an element are surrounded by various orbits of specific energy levels in which electrons revolve. These levels are known as the Electron Energy Levels. Every element has a distinct part of electron energy levels.

The energy of these levels varies from one another and whenever an electron hops from the higher to a lower energy levels, it emits energy in the form of photons or quanta (energy bundles).

In the same way, whenever an electron needs to hop from a lower to a higher energy levels, it requires a specific amount of energy, equal to the difference between the two respective energy levels to the transition. Hence, it absorbs energy from the source, if provided.

Answer from: Quest

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

Answer from: Quest

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

$p(t)=0.3t^2+6t+80$

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

$p(0)=0+0+80=80$

according to question, we have said that if the population has twice its initial population, then it becomes

$p(t)=2\times 80=160$

so, time taken to reach this above mentioned population is given by

$160=0.3t^2+6t+80\\\\160-80=0.3t^2+6t\\\\80=0.3t^2+6t\\\\0.3t^2+6t-80=0\\\\\text{using quadratic formula ,we get }\\\\t_{1,\: 2}=\frac{-60\pm \sqrt{60^2-4\cdot \: 3\cdot \: 800}}{2\cdot \: 3}\\\\t=-29.14\ and\ t=9.149$

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

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