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Sergio039 [100]
3 years ago
15

. What is the relationship between frequency, wavelength and speed of a wave?

Computers and Technology
1 answer:
jeka943 years ago
5 0

Answer:

vw = fλ

Explanation:

Sound, like all waves, travels at a certain speed and has the properties of frequency and wavelength. You can observe direct evidence of the speed of sound while watching a fireworks display. The flash of an explosion is seen well before its sound is heard, implying both that sound travels at a finite speed and that it is much slower than light. You can also directly sense the frequency of a sound. Perception of frequency is called pitch. The wavelength of sound is not directly sensed, but indirect evidence is found in the correlation of the size of musical instruments with their pitch. Small instruments, such as a piccolo, typically make high-pitch sounds, while large instruments, such as a tuba, typically make low-pitch sounds. High pitch means small wavelength, and the size of a musical instrument is directly related to the wavelengths of sound it produces. So a small instrument creates short-wavelength sounds. Similar arguments hold that a large instrument creates long-wavelength sounds.

The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength. The wavelength of a sound is the distance between adjacent identical parts of a wave—for example, between adjacent compressions as illustrated in Figure 2. The frequency is the same as that of the source and is the number of waves that pass a point per unit time.

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2.Consider the following algorithm and A is a 2-D array of size ???? × ????: int any_equal(int n, int A[][]) { int i, j, k, m; f
Elis [28]

Answer:

(a) What is the best case time complexity of the algorithm (assuming n > 1)?

Answer: O(1)

(b) What is the worst case time complexity of the algorithm?

Answer: O(n^4)

Explanation:

(a) In the best case, the if condition will be true, the program will only run once and return so complexity of the algorithm is O(1) .

(b) In the worst case, the program will run n^4 times so complexity of the algorithm is O(n^4).

5 0
3 years ago
Given input characters for an arrowhead and arrow body, print a right-facing arrow. Ex: If the input is: *
MrRa [10]

Answer:

Following are the code to this question:

b= input()#defining b variable for input character value

h= input()#defining h variable for input character value

b_width=6#defining b_width variable that holds an integer value 6

r1 = ' ' * b_width+h#defining r1 variable that calculates hash lines

r2 = b*b_width+h*2#defining r3 variable that calculates 6 asterisk and 2 hash line  

r3 = b*b_width+h*3#defining r3 variable that calculates 6 asterisk and 3 hash line

print(r1)#print r1 variable value

print(r2)#print r2 variable value

print(r3)#print r3 variable value

print(r2)#print r2 variable value

print(r1)#print r1 variable value

Output:

please find the attachment.

Explanation:

In the given python code, three variable "b,h, and b_width" is declared, in which "b_width" holds an integer variable "6" and variable "b and h" is used to an input character value.  In the next line, "r1, r2, and r3" is declared, that holds arrowhead values which can be defined as follows:

  • In the "r1" variable, it stores space with b_width variable and one h variable value.
  • In the "r2" variable it stores b_width and 2*h variable value.
  • In the "r3" variable it stores b_width and 3*h variable value.

At the last, it prints the "r1, r2, and r3" variable value and for arrowheads,  it follows the above program code.

6 0
3 years ago
What is HTML ? <br>Give a small description about html
Genrish500 [490]
Hypertext Markup Language, a standardized system for tagging text files to achieve font, colour, graphic, and hyperlink effects on World Wide Web pages.
this information was taken from google
7 0
3 years ago
Read 2 more answers
Express the following binary numbers in hexadecimal. (a) %100011100101 (b) %1011001111 (show work)
Lapatulllka [165]

Answer:

(100011100101)_{2} = (8E5)_{16} = %8E5

(1011001111) = (2CF)_{16} = %2CF

Explanation:

Binary and hexadecimal values have the following pair equivalences.

(0000)_{2} = (0)_{16}

(0001)_{2} = (1)_{16}

(0010)_{2} = (2)_{16}

(0011)_{2} = (3)_{16}

(0100)_{2} = (4)_{16}

(0101)_{2} = (5)_{16}

(0110)_{2} = (6)_{16}

(0111)_{2} = (7)_{16}

(1000)_{2} = (8)_{16}

(1001)_{2} = (9)_{16}

(1010)_{2} = (A)_{16}

(1011)_{2} = (B)_{16}

(1100)_{2} = (C)_{16}

(1101)_{2} = (D)_{16}

(1110)_{2} = (E)_{16}

(1111)_{2} = (F)_{16}

We convert from binary to hexadecimal selecting groups of 4 binary from the binary code, from the least significant bits(at the right) to the most significant bits(at the left). The conversion is an hexadecimal "string" from the last group you converted to the first. So:

(a) %100011100101

(0101)_{2} = (5)_{16}

(1110)_{2} = (E)_{16}

(1000)_{2} = (8)_{16}

So

(100011100101)_{2} = (8E5)_{16}

(b) %1011001111

(1111)_{2} = F_{16}

(1100)_{2} = C_{16}

(10)_{2} = (0010)_{2} = 2_{16}

(1011001111) = (2CF)_{16}

7 0
3 years ago
PLEASE HELP ME HELP ME NO IM NOT OKAY AND ITS NOT EASY FOR ME.....Vladimir is reworking an old slideshow. He needs to delete som
Mandarinka [93]

Answer:

Outline view

Explanation:

This is a formatted window that shows all text, headers, and titles in a popup on the left side of the screen. Slide master shows all the slides but includes slide details such as inserted images and smart art.

7 0
3 years ago
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