2 years ago

Which property of sound waves decreases as the square of the distance from the source increases?

Physics

2 answers:

AleksAgata [21]2 years ago

5 0

A. Pitch

okay bye have a nice day

From: Charli

Alexandra [31]2 years ago

3 0

Your answer would be A

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Activity that uses 150 calories of energy per day, or 1,000 calories per week, describes ___________.

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Moderate physical activity

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3 years ago

The energy levels of a particular quantum object are -11.7 eV, -4.2 eV, and -3.3 eV. If a collection of these objects is bombard

gogolik [260]

To solve this problem it is necessary to apply an energy balance equation in each of the states to assess what their respective relationship is.

By definition the energy balance is simply given by the change between the two states:

$|\Delta E_{ij}| = |E_i-E_j|$

Our states are given by

$E_1 = -11.7eV$

$E_2 = -4.2eV$

$E_3 = -3.3eV$

In this way the energy balance for the states would be given by,

$|\Delta E_{12}| = |E_1-E_2|\\|\Delta E_{12}| = |-11.7-(-4.2)|\\|\Delta E_{12}| = 7.5eV\\$

$|\Delta E_{13}| = |E_1-E_3|\\|\Delta E_{13}| = |-11.7-(-3.3)|\\|\Delta E_{13}| = 8.4eV$

$|\Delta E_{23}| = |E_2-E_3|\\|\Delta E_{23}| = |-4.2-(-3.3)|\\|\Delta E_{23}| = 0.9eV$

Therefore the states of energy would be

Lowest : 0.9eV

Middle :7.5eV

Highest: 8.4eV

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3 years ago

Seyed made a chart to compare Einstein's and Newton's ideas about time and space.

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Answer:

space is three dimensional

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Why are some isotopes used as tracers?

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<span>C. They decay at a predictable rate. IE carbon 14 decay to carbon 12 to understand how long ago something was alive.</span>

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3 years ago

Obtain the temp. at which the reading of Fahrenheit is double of that in Celsius scale.

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