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3 years ago

If you wanted to detect x rays coming from the sun, where would you place the detector? Why?

2 answers:

4 0

You would have to place your sensor above earth's atmosphere because it blocks out nearly all x-rays. this is why we have the Chandra observatory

hope this helps

Nady [450]3 years ago

3 0

If you wanted to detect X-rays coming from the sun, the detector would have to be placed in orbit around Earth since most X-rays are absorbed the atmosphere.

Hope this helped :)

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What happens to the sound an object makes when the speed of vibrations decreases (slow down)?.

Masja [62]

The frequency decreases, and you will hear a lower tone

3 0

3 years ago

A person hears the echo of his own voice from a distant hill after 2 seconds. How far away is the person from the hill, if the s

olga nikolaevna [1]

Answer: 330 m

Explanation:

The speed of sound $V$ is defined as the distance traveled by the sound wave $d$ in a especific time $t$ :

$V=\frac{d}{t}$

Where:

$V=330 m/s$ is the speed of sound

$t=\frac{2 s}{2}=1 s$ is half the time the sound wave travels since the person speaks, the sound wave hits the hill and then returns to the person again as an echo

$d$ is the distance between the person and the hill

So, we have to find $d$ :

$d=Vt$

$d=(330 m/s)(1 s)$

Finally:

$d=330 m$

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3 years ago

Define the focus of a concave lens

Sophie [7]

Answer:

Principal focus of concave lens - 

★ The point at which rays parallel to principal axis coming from infinity appear to converge after being refracted from concave lens is called the principal focus of concave lens.

________________________

• Additional information - 

★ Principal focus - A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. This is called principal focus.

8 0

3 years ago

Chance drives his scooter 7km north he stops for lunch and then drives 5km East to his friend house what distance did he cover

Katena32 [7]

Answer:12km

Explanation:

7km+5km=12km

6 0

3 years ago

What collides and creates a movement of heat called conduction?

lutik1710 [3]

The answer of this is C!!!

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3 years ago