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2 years ago

11

Last one I swear, 50 points again! plz help this is schoolwork

2 answers:

Anit [1.1K]2 years ago

8 0

It is a stretch of the atmosphere ranging from the upper mesosphere to the lower parts of the thermosphere. It’s useful to us in radio communication.

shutvik [7]2 years ago

6 0

Answer:

Where is the ionosphere, and what makes it useful to us? The ionosphere is a stretch of the atmosphere ranging from the upper mesosphere to the lower parts of the thermosphere. It is useful to us in radio communication, as radio signals can bounce off of it to extend their range

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A sound wave with a frequency of 400 Hz is moving through a solid object. If the wavelength of the sound wave is 8 m, what is th

Paraphin [41]

Answer:

v = 3200 m/s

Explanation:

As we know that the frequency of the sound wave is given as

$f = 400 Hz$

wavelength of the sound wave is given as

$\lambda = 8 m$

so now we have

$speed = wavelength \times frequency$

so we will have

$v = (8m) \times (400 Hz)$

$v = 3200 m/s$

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2 years ago

Can someone help me please

Evgen [1.6K]

The last one: meter

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2 years ago

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Given that the electric potential is 7.3×10−2 V higher outside the cell than inside the cell, and that the cell membrane is 0.10

Pavel [41]

Answer:

Work to move on ion inside a cell = 1.168×10^-20J

Explanation:

Potential difference is a ratio of work done by a charge.

It is given as

◇V= Workdone ×charge= W/a

Workdone = V × q= (7.3×10^-2)×(1.6×10^-19)

W= 1.168×10^-20Joules

4 0

2 years ago

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Naddik [55]

(2.5,-1) There you go bro

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2 years ago

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Which answer is not a problem associated with sulfur dioxide? A) damage to buildings B) ozone depletion C) vegetation death D) b

swat32

Answer:

Answer is A. damage to buildings.

Explanation:

I hope it's helpful!

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2 years ago