3 years ago

Which type(s) of electromagnetic radiation do human bodies emit? Which type(s) can our senses detect?

1 answer:

6 0

Our bodies emit heat, and nerve endings in our skin can detect it.
Our eyes can detect visible light, but our bodies don't emit that.

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Two loudspeakers emit identical sound waves along the x-axis. The sound at a point on the axis has maximum intensity when the sp

EleoNora [17]

The concept required to solve this problem is related to the wavelength.

The wavelength can be defined as the distance between two positive crests of a wave.

The waves are in phase, then the first distance is

$\Delta x_1 = 20cm$

And out of the phase when

$\Delta x_2 = 30cm$

Thus the wavelength is

$\Delta x_2-\Delta x_1 = \frac{\lambda}{2}$

Here,

$\lambda =$ Wavelength

If we rearrange the equation to find it, we will have

$\lambda = 2 (\Delta x_2-\Delta x_1 )$

$\lambda= 2(30-20)$

$\lambda = 20cm$

Therefore the wavelength of the sound is 20cm.

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Sladkaya [172]

I believe it is A bit not completely sure

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3 years ago

Which of the following is a valuable part of the scientific method?

yulyashka [42]

Trial and error

scientific laws and theories are proven by experimental data and large bodies of evidence.

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3 years ago

Point charges of 28.0 µC and 42.0 µC are placed 0.500 m apart. (a) At what point (in m) along the line connecting them is the el

olga_2 [115]

Answer: a) electric field will be zero at zero meters apart

b) for smaller charge q, E = 6.048X10^6N/m towards away from the charge,

for bigger charge Q, E = 4.032X10^6N/m

Explanation:

Detailed explanation and calculation is shown in the image below.

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3 years ago

What is the medium that sounds waves travel through when a person speaks

meriva

The medium that sound travels through when a person speaks anything that has loose floating atoms for them to bounce off of so it is most commonly air.

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