3 years ago

A transmission system at a radio station uses a/an _______ to convert a direct current into a highfrequency alternating current.

1 answer:

3 0

A transmission system at a radio station uses an oscillator to convert a direct current into a high frequency alternating current.

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miskamm [114]

Answer:

1cm=10mm

10cm/0.125mm

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2 years ago

What type of energy transformation is demonstrated in the above diagram?

Svetach [21]

Answer:

C :)

Explanation:

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3 years ago

Se o Universo tem uma idade definida, de aproximadamente 13,7 bilhões de anos, o que existiu antes do big-bang?

UkoKoshka [18]

Ninguém sabe exatamente

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3 years ago

What are the units, if any, of the particle in a box wavefunction. What does this mean?

SIZIF [17.4K]

Answer:

$[\psi]= [Length^{-3/2}]$
This means that the integral of the square modulus over the space is dimensionless.

Explanation:

We know that the square modulus of the wavefunction integrated over a volume gives us the probability of finding the particle in that volume. So the result of the integral

$\int\limits^{x_f}_{x_0} \int\limits^{yf}_{y_0} \int\limits^{z_f}_{z_0} |\psi|^2 \, dz \, dy \, dx$

must be dimensionless, as represents a probability.

As the differentials has units of length

$[dx]=[dy]=[dz]=[Length]$

for the integral to be dimensionless, the units of the square modulus of the wavefunction has to be:

$[\psi]^2 = [Length^{-3}]$

taking the square root this gives us :

$[\psi] = [Length^{-3/2}]$

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3 years ago

Use the drop-down menus to identify each labeled part of the diagram.

iren2701 [21]

Answer:

A:cool fluid sinks

B:warm fluid rises

C:convection current

Explanation:

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