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2 years ago

Does the wireless signal between the cell phones require matter to travel from one phone to another?

1 answer:

3 0

Mobile phones transmit and receive signals using electromagnetic waves, that is, wireless signal are electromagnetic waves which can travel through a vacuum, they do not need a medium or matter.

<h3>What are electromagnetic waves?</h3>

They are generated by electrical and magnetic particles moving at the same time (oscillating).

<h3>Characteristics of electromagnetic waves</h3>

Network waves are electromagnetic waves.

A mobile phone has coverage when it receives electromagnetic waves from at least one base station.

They do not necessarily require a material medium for their propagation.

Therefore, we can conclude that electromagnetic waves are those that do not need a material medium to propagate and include, among others, radio, television and telephone waves.

Learn more about electromagnetic waves here: brainly.com/question/13803241

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Write a program that receives a series of numbers from the user and allows the user to press the enter key to indicate that he o

kogti [31]

Answer:

theSum = 0.0#defined in the question.

count=0 #modified code and it is used to intialize the value to count.

data = input("Enter a number: ") #defined in the question.

while data != "": #defined in the question.

number = float(data) #defined in the question.

theSum += number #defined in the question.

data = input("Enter the next number or press enter to quit ") #defined in the question "only some part is modified"

count=count+1#modified code and it is used to count the input to print the average.

print("The sum is", theSum)#defined in the question.

print("The average is", theSum/count) #modified code and it is used to print the average value.

output:

If the user inputs as 1,4 then the sum is 5 and the average is 2.5.

Explanation:

The above code is written in the python language, in which some part of the code is taken from the question and some are added.
The question has a code that tells the sum, but that code is not print the average value of the user input value.
To find the average, some codes are added, in which one count variable which is initialized at the starting of the program and gets increased by 1, when the user gives the value.
Then that count divides the sum to print the average.

5 0

3 years ago

How many permutations for a 7 characters in length string, which contains all following letters R, X, S, Y, T, Z, U, has either

True [87]

Answer:

Following are the solution to this question:

Explanation:

In the following forms, RXS can appear:

$R X S \_ \_ \_ \_$ it may look like that really, $4 \times 3 \times 2 \times 1$ forms = 24 may construct the remainder of its letters.

$\_ R X S \_ \_ \_$ it may look like that really, $4 \times 3 \times 2 \times 1$ forms = 24 may construct the remainder of its letters.

$\_ \_ R X S \_ \_$ it may look like that really, $4 \times 3 \times 2 \times 1$ forms = 24 may construct the remainder of its letters.

$\_ \_ \_ R X S \_$ it may look like that really, $4 \times 3 \times 2 \times 1$ forms = 24 may construct the remainder of its letters.

$\_ \_ \_ \_ R X S$ it may look like that really, $4 \times 3 \times 2 \times 1$ forms = 24 may construct the remainder of its letters.

And we'll have a total of $24 \times 5 = 120$ permutations with both the string RXS.

In the following forms, UZ can appear:

$U Z \_ \_ \_ \_\ _$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

$\_ UZ \_ \_ \_ \_$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

$\_ \_ U Z \_ \_ \_$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

$\_ \_ \_ U Z \_ \_$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

$\_ \_ \_ \_ U Z \_$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

$\_ \_ \_ \_ \_ U Z$ They can organize your remaining 5 characters through 5 categories! Procedures $= 5 \times 4 \times 3 \times 2 \times 1 = 120$

There may be $120 \times 6 = 720$ ways of complete permutations.

5 0

3 years ago

Which tool relies on the logged on user's certificate details to encrypt or decrypt files and folders? powershell bitlocker encr

grigory [225]

The tool relies on the logged on user's certificate details to encrypt or decrypt files and folders is the encrypting file system (efs).
It gives filesystem-level encryption as part of the improvement made on Microsoft Windows in version 3.0 of NTFS. This technology allows files to be visibly encrypted to secure confidential data from unsecured access to the computer.

3 0

4 years ago

Kahoot plzkahoot plzkahoot plz

Evgen [1.6K]

MAKE ONE AND SEND THE CODE !! I'M SO BORED RN IT ISN'T NORMAL HAHAHAHA

4 0

3 years ago

What does this say:<br> √ans

dangina [55]

Answer: I do belive is says Vans

Explanation:

5 0

3 years ago

Read 2 more answers