3 years ago

PLEASE HELP use the image to answer the question. what is the name of the aluminum ion?

Physics

2 answers:

solong [7]3 years ago

8 0

Answer:

Aluminum 3+

Sorry if im not correct.

labwork [276]3 years ago

7 0

Answer:

Aluminium(3+)

Explanation:

im big brains

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A) 750 m

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$c=3.0\cdot 10^8 m/s$ is the speed of light

So the wavelength of the beam is

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Now we can use the formula of the single-slit diffraction to find the radius of aperture of the beam:

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Substituting, we find

$y=\frac{(1)(0.025 m)(30000 m)}{2.0 m}=375 m$

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$d=2y = 750 m$

B) 0.23 W/m^2

First we calculate the area of the surface of the microwave at a distance of 30 km. Since the diameter of the circle is 750 m, the radius is

$r=\frac{750 m}{2}=375 m$

So the area is

$A=\pi r^2 = \pi (375 m)^2=4.42\cdot 10^5 m^2$

And since the power is

$P=100 kW = 1\cdot 10^5 W$

The average intensity is

$I=\frac{P}{A}=\frac{1\cdot 10^5 W}{4.42\cdot 10^5 m^2}=0.23 W/m^2$

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