When all parts of a circuit are composed of conducting materials, the circuit is said to be

1 answer:

katrin2010 [14]3 years ago

3 0

When all parts of a circuit are made of conductors, then
it's possible for electric current to flow all the way around
the circuit, and we say that the circuit is "closed".

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An excited atom decays to its ground state and emits a photon of green light. If instead the atom decays to an intermediate stat

scoundrel [369]

Answer:

the light emitting must be of greater wavelength

Explanation:

For this exercise we must use the Planck equation

E = h f

And the speed of light

c = λ f

f = c / λ

We replace

E = h c / λ

The wavelength of the green light is of the order of 500 nm, let's calculate the energy

E = 6.63 10⁻³⁴ 3 10⁸ /λ

E = 1,989 10⁻²⁵ /λ

λ = 500 nm = 500 10⁻⁹ m

E = 1,989 10⁻²⁵ / 500 10⁻⁹

E = 3,978 10⁻¹⁹ J

That is the energy of the transition for a transition is an intermediate state the energy must be less, this implies that the wavelength must increase. For the explicit case of a state with half of this energy

$E_{int}$ = E / 2

$E_{int}$ = 3,978 10⁻¹⁹ / 2 = 1,989 10⁻¹⁹

Let's clear and calculate

λ = h c / E

λ = 1,989 10⁻²⁵ / 1,989 10⁻¹⁹

λ = 1 10⁻⁶ m

Let's reduce to nm

λ = 1000 nm

This wavelength is in the infrared region

the light emitting must be of greater wavelength

8 0

3 years ago

You jump off a truck and accelerate toward the surface of the Earth. Does the Earth accelerate toward you?

Triss [41]

When we jump from the truck and accelerate towards the earth surface, the earth also accelerates towards us but it's acceleration is very negligible.

To find the answer, we need to know about the acceleration of earth due to the gravitational attraction.

<h3>What's the gravitational force between the earth and a person?</h3>