Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.

b. Explain why the two recordings would sound different after being replayed 100 times.

Answers

Answer 1

Answer:

a)The analog signal'spitch and frequency change each time. It is continuous in the digital signal.

What is the digital signal?

A digital signal is one in which data is represented as a series of discrete numbers.

To reduce the influence of noise in communication, a digital signal is utilized. When compared to analog signals, digital signals convey more information per unit of time.

a)Evelyn would most likely notice a difference between the two recordings after hearing them 100 times is that the analogsignal's pitch and frequency change each time. It is continuous in the digital signal.

b)After 100 replays, the two recordings would sound different since the digital signal has a greater quality throughout long-distance transmission.

When digital signals are transferred, the amount of bandwidth used is lowered.

Hence, the digital signal has a greater quality throughout long-distance transmission causing two recordings would sound different.

To learn more about digital signals refer to:

brainly.com/question/14825566

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Answers

Answer:

yes i understand jxwkxbkwksk j

Explanation:

Answer:

Yes

Explanation:

The first thing to focus on when creating a workout plan isdetermining the frequency of the activity
choosing the intensity level
watching others complete the activity
selecting an activity you enjoy

Answers

I think the best answer is option one. The first thing to focus on when creating a workout plan is determining the frequency of the activity. It is important took look at how much time do you have to do things in order to manage your tasks daily and you can give enough time for each activity.

Key points you need remember while doing workout are:

1. Frequency
2. Intensity
3. Time
4. Type.

As you may expect, this refers to however typically you may exercise. Once any sort of exercise is performed your body completes a method of reconstruction and repairing. So, decisive the frequency of exercise is vital so as to search out a balance that has simply enough stress for the body to adapt and conjointly permits enough rest time for healing.
Therefore, the first thing to focus on when creating a workout plan is determining the frequency of the activity. It is important to take a look at how much time do you have to do things in order to manage your tasks daily and you can give enough time for each activity.

When an object is at a distance of twice the focal length from a concave lens, the image produced is virtual and smaller than the object. What happens to the image if the object is shifted closer to the lens to a point one focal length away from it?The image produced is virtual and enlarged.
The image produced is virtual and smaller than the object.
The image produced is real and enlarged.
The image produced is real and smaller than the object.
The image produced is virtual and of the same size as the object.

Answers

Answer:

The image produced is virtual and smaller than the object.

Explanation:

For concave lens we know that

$(1)/(d_i) + (1)/(d_o) = (1)/(f)$

here we have

$(1)/(d_i) + (1)/(2f) = -(1)/(f)$

$(1)/(d_i) = - (3)/(2f)$

$d_i = -(2f)/(3)$

Magnification will be given as

$M = (d_i)/(d_o)$

$M = -2/3$

so image will be virtual and formed behind the lens

Now the object position is shifted to new position at distance of focal length

now again we will have

here we have

$(1)/(d_i) + (1)/(f) = -(1)/(f)$

$(1)/(d_i) = - (2)/(f)$

$d_i = -(f)/(2)$

Magnification will be given as

$M = (d_i)/(d_o)$

$M = -1/2$

So again we will have virtual image with magnification 1/2

so here size of image is less than object size by factor of 1/2 and it is virtual

The right answer for the question that is being asked and shown above is that: "The image produced is virtual and of the same size as the object." the image if the object is shifted closer to the lens to a point one focal length away from it is that The image produced is virtual and of the same size as the object.

What happens at the anode of an electrolytic cell?a. electrons are given up
c. electrons are formed
b. electrons are accepted
d. electrons form bonds

Answers

The correct answer for the question that is being presented above is this one: "c. electrons are formed." The anode inside the electrolytic cell makes the electrons formed. There is something happened inside the electrolytic cell that will make the electrons to form.

A wave front has the form of a

Answers

Your answer is "surface of a sphere"

Hope this helps.

Define density and give its SI unit

Answers

Answer:

Density is defined as mass per unit volume. its SI unit is: kg/m³

Explanation:

Answer:

Density is defined as mass per unit volume. its SI unit is: kg/m³

Explanation:

from answer above

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