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3 years ago

Why are strokes and Alzheimer's disease serious conditions? Select all that apply. You can die from either one.

Physics

2 answers:

Sladkaya [172]3 years ago

7 0

The first and fourth option my dudette
.
Zane

irakobra [83]3 years ago

5 0

Answer: You can die from either one.

Both conditions kill brain cells.

Explanation:

Alzheimer is a disease which affects the brain. In this the memory and thinking skills of the person get slowly destroyed. This involves the damage of the brain cells. It develops typically in the age of 60s and more. This disease can be lethal.

A stroke is an attack of brain, in this the vital flow of blood and oxygen to the brain gets stopped. The brain cells die as a result of this. This can lead to death.

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Two objects made of the same material are heated to 60 oC and 90 oC. According to

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Assuming that there is in a vacuum, the two object will cool at the same rate, because the objects are made of the same material they will have the same cooling rate, assuming the surrounding temperature is the same.

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3 years ago

Read 2 more answers

A convex security mirror has a radius of curvature of 12.0 cm. What is the magnification of a pare 3.0 m from the mirror?

Makovka662 [10]

Answer:

magnification will be -0.025

Explanation:

We have given the radius of curvature = 12 cm

And object distance = 3 m

So focal length $f=\frac{R}{2}=\frac{12}{2}=6cm$

Now for mirror we know that $\frac{1}{f}=\frac{1}{u}+\frac{1}{v}$

So $\frac{1}{0.06}=\frac{1}{3}+\frac{1}{v}$

$16.66-0.333=\frac{1}{v}$

v = 0.750 m

Now magnification of the mirror is $m=\frac{-v}{u}=\frac{-0.750}{3}=-0.025$

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4 years ago

A sound wave, generated at a frequency of 440 hertz has a wavelength of 2.3 meters as it travels through a solid material. The a

Jlenok [28]

The approximate speed of the sound wave traveling through the solid material is 1012m/s.

<h3>Wavelength, Frequency and Speed</h3>

Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

From the wavelength, frequency and speed relation,

λ = v ÷ f

Where λ is wavelength, v is velocity/speed and f is frequency.

Given the data in the question;

Frequency of sound wave f = 440Hz = 440s⁻¹

Wavelength of the wave λ = 2.3m

Speed of the wave v = ?

To determine the approximate speed of the wave, we substitute our given values into the expression above.

λ = v ÷ f

2.3m = v ÷ 440s⁻¹

v = 2.3m × 440s⁻¹

v = 1012ms⁻¹

v = 1012m/s

Therefore, the approximate speed of the sound wave traveling through the solid material is 1012m/s.

Learn more about Speed, Frequency and Wavelength here: brainly.com/question/27120701

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2 years ago

if a ball is thrown with a velocity of 25 m/s at an angle of 37 degrees above the horizontal,evaluate the projectile for it's ho

agasfer [191]

Answer:100 mph

Explanation:

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3 years ago

Calculate the illuminance at sea level from the sun at zenith, using the following information: The luminance of the sun at zeni

Sergeeva-Olga [200]

Answer:

346.01 × 10² Lux

Explanation:

Given:

luminance of the sun at zenith at sea level, Ls = 1600 × 10 cd/m²

The diameter of the sun's photosphere = 8.64 × 10 miles = 45.62 × 10⁸ ft

Radius, r = $\frac{45.62\times10^8\ ft}{\textup{2}}$

r = 22.81 × 10⁸ ft

The distance from the sun to the earth = 92.9 × 10 miles = 49.05 x 10¹⁰ ft

Now,

Lumen = Luminance × 4πr²

Lumen = 1600 × 10 cd/m² × 4πr² .....................(1)

also,

Illumination = $\frac{\textup{Lumen}}{\textup{4}\pi\textup{Distance}^2}$

on substituting lumen from 1

Illumination = $\frac{1600\times10\times4\pi r^2}{\textup{4}\pi\textup{Distance}^2}$

Illumination = $\frac{1600\times10^6\times4\pi\times(22.81\times10^8\ ft)^2}{\textup{4}\pi\textup{49.05\times10^10 ft}^2}$

Illumination = 346.01 × 10² Lux

5 0

3 years ago