Answer:
a) The vertical component of the kangaroo's velocity at take off is approximately 4.982 meters per second.
b) The angle at which the kangaroo took off the ground is approximately 46.066º.
Explanation:
a) According to the statement, the kangaroo has an initial horizontal velocity and jumps to overcome the fence until velocity becomes zero. If effects from non-conservative forces can be neglected, then we represent the situation of the kangaroo by Principle of Energy Conservation:
[tex]K_{1}+U_{g,1} = K_{2}+U_{g,2}[/tex] (Eq. 1)
Where:
[tex]K_{1}[/tex], [tex]K_{2}[/tex] - Initial and final translational kinetic energies, measured in joules.
[tex]U_{g,1}[/tex], [tex]U_{g,2}[/tex] - Initial and final gravitational potential energies, measured in joules.
By definitions of translational kinetic and potential gravitational energies, we expand and simplify the equation above:
[tex]\frac{1}{2}\cdot m\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = m\cdot g \cdot (y_{2}-y_{1})[/tex]
[tex]\frac{1}{2}\cdot [(v_{1,x}^{2}+v_{1,y}^{2})-(v_{2,x}^{2}+v_{2,y}^{2})] = g \cdot (y_{2}-y_{1})[/tex] (Eq. 2)
Where:
[tex]m[/tex] - Mass of the kangaroo, measured in kilograms.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]y_{1}[/tex], [tex]y_{2}[/tex] - Initial and final heights of the kangaroo above the ground, measured in meters.
[tex]v_{1,x}[/tex], [tex]v_{1,y}[/tex] - Vertical and horizontal initial velocities, measured in meters per second.
[tex]v_{2,x}[/tex], [tex]v_{2,y}[/tex] - Vertical and horizontal final velocities, measured in meters per second.
If we know that [tex]v_{1,x} = 4.80\,\frac{m}{s}[/tex], [tex]v_{2, x} = 0\,\frac{m}{s}[/tex], [tex]v_{2,y} = 0\,\frac{m}{s}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]y_{2}-y_{1} = 2.44\,m[/tex], then (Eq. 2) is reduced into this:
[tex]11.52+0.5\cdot v_{1,y}^{2}=23.929[/tex]
Lastly, we solve for [tex]v_{1,y}[/tex]:
[tex]0.5\cdot v_{1,y}^{2}=12.409[/tex]
[tex]v_{1,y}^{2} = 24.818[/tex]
[tex]v_{1,y} \approx 4.982\,\frac{m}{s}[/tex]
The vertical component of the kangaroo's velocity at take off is approximately 4.982 meters per second.
b) The angle at which the kangaroo took off the ground ([tex]\theta[/tex]), measured in sexagesimal degrees, is obtained by the following inverse trigonometric relation:
[tex]\theta =\tan^{-1}\left(\frac{v_{1,y}}{v_{1,x}} \right)[/tex] (Eq. 3)
[tex]\theta = \tan^{-1}\left(\frac{4.982\,\frac{m}{s} }{4.80\,\frac{m}{s} } \right)[/tex]
[tex]\theta \approx 46.066^{\circ}[/tex]
The angle at which the kangaroo took off the ground is approximately 46.066º.
Write a program that contains three methods:
Method max (int x, int y, int z) returns the maximum value of three integer values.
Method min (int X, int y, int z) returns the minimum value of three integer values.
Method average (int x, int y, int z) returns the average of three integer values.
Answer:
#include <stdio.h>//defining header file
int max (int x, int y, int z) //defining a method max that hold three parameters
{
if(x>=y && x>=z)//defining if block that checks x is greater then y and x is greater then z
{
return x;//return the value x
}
else if(y>z)//defining else if block it check y is greater then z
{
return y;//return the value y
}
else//else block
{
return z;//return the value z
}
}
int min (int x, int y, int z) //defining a method max that holds three parameters
{
if(x<=y && x<=z) //defining if block that check x value is less then equal to y and less then equal to z
{
return x;//return the value of x
}
if(y<=x && y<=z) //defining if block that check y value is less then equal to x and less then equal to z
{
return y;//return the value of y
}
if(z<=x && z<=x)//defining if block that check z value is less then equal to x
{
return z;//return the value of z
}
return x;//return the value of z
}
int average (int x, int y, int z) //defining average method that take three parameters
{
int avg= (x+y+z)/3;//defining integer variable avg that calculate the average
return avg;//return avg value
}
int main()//defining main method
{
int x,y,z;//defining integer variable
printf("Enter first value: ");//print message
scanf("%d",&x);//input value from the user end
printf("Enter Second value: ");//print message
scanf("%d",&y);//input value from the user end
printf("Enter third value: ");//print message
scanf("%d",&z);//input value from the user end
printf("The maximum value is: %d\n", max(x,y,z));//calling the method max
printf("The minimum value is: %d\n", min(x,y,z));//calling the method min
printf("The average value is: %d\n", average(x,y,z));//calling the method average
return 0;
}
Output:
Enter first value: 45
Enter Second value: 35
Enter third value: 10
The maximum value is: 45
The minimum value is: 10
The average value is: 30
Explanation:
In the above-given code, three methods "max, min, and average" is declared that holds three integer variable "x,y, and z" as a parameter and all the method work as their respective name.
In the max method, it uses a conditional statement to find the highest number among them.In the min method, it also uses the conditional statement to find the minimum value from them.In the average method, it defined an integer variable "avg" that holds the average value of the given parameter variable.In the main method, three variable is defined that inputs the value from the user end and passes to the method and print its value.The coding system that has just two characters is called:
a
binary
b
dual.
c
basic.
d
double.
Answer:
A. Binary
Definition:
Pertaining to a number system that has just two unique digits 0 and 1. - binary code
An uniterruptible power supply
Answer:
An uninterruptible power supply is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
Explanation:
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What are some applications of a Router?
9.2.2: Output formatting: Printing a maximum number of digits. Write a single statement that prints outsideTemperature with 4 digits. End with newline. Sample output with input 103.45632: 103.5
Answer:
The single print statement that does the required in python is:
print("%.4g" % outsideTemperature)
Explanation:
The full program is as follows:
The first line prompts user for input
outsideTemperature = float(input("Outside Temperature: "))
To print significant figures, we make use of g formats. And this is implemented as follows:
print("%.4g" % outsideTemperature)
The above prints 4 significant digits of outsideTemperature
For other significant figures, simply change the 4 to another number
References inserted initially as footnotes can be converted to endnotes through an option in the software.
A. True
B. False
The answer is: A) True
A DVD-ROM can store more data than a CD-ROM of the same size. Comment.
Answer:
ya its true that DVD-ROM can store more data except CD-ROM
Explanation:
more dat saving in with DVD-ROM
Ask the user how many numbers for which they want to calculate the sum. Using a for loop, prompt the user to enter that many numbers, one-by-one, keeping track of the sum. At the end, after the user entered all numbers, output the sum.
n = int(input("How many numbers do you want to sum? "))
total = 0
for x in range(n):
total += int(input("Enter a number: "))
print("Sum: "+str(total))
I hope this helps!
Following are the program to the given question:
Program Explanation:
Defining a variable "Sum" that holds an integer value.In the next step, a variable "t" is defined that uses the input method to input a value from the user-end.After the input value, a for loop is declared that takes the range of the t variable.Inside the loop, another variable "n" is defined that inputs value from user-end and use the "Sum" variable to add its value.Outside the loop, a print method has been used that prints the sum variable in the string with the message.Program:
Sum = 0#defining a variable sum that hold an integer value
t= int(input("Enter the total number you want to add: "))#defining a t variable that input value from user-end
for i in range(t):#defining a loop that add inputs values from above user-input range
n= int(input("Enter value "+str(i+1)+": "))#defining loop that inputs n value
Sum += n; #defining sum variable that adds user-input value
print("Sum of entered number: "+str(Sum))#using print method that print added value
Output:
Please find the attached file.
Learn more:
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Dance dance1 = new Dance("Tango","Hernandos Hideaway");
Dance dance2 = new Dance("Swing","Hound Dog");
System.out.println(dance1.toString());
System.out.println(dance2.toString());
class Dance
{
private String name;
private String song;
public Dance(String name, String s)
{
this.name = name;
song = s;
}
public String toString()
{
return name + " " + song;
}
}
What is printed when the program is executed?
a
null null
null null
b
Hernandos Hideaway null
Hound Dog null
c
null null
Swing Hound Dog
d
Tango Hernados Hideaway
Swing Hound Dog
e
null Hernandos Hideaway
null Hound Dog
Answer:
The output of the program is (d)
Tango Hernados Hideaway
Swing Hound Dog
Explanation:
Analyzing the given code segment
In class Dance,
A method named dance was defined with an instance of two string variables/values
which are name and song
public Dance(String name, String s)
In the main of the program,
The first line creates an instance of Dance as dance1
dance1 is initialized with the following string values: "Tango","Hernandos Hideaway"
- The first string value "Tango" will be passed into the name variable of the Dance method
- The second string value "Hernandos Hideaway" will be passed into the song variable of the Dance method
Next, another instance of Dance is initialized as dance2
dance2 is initialized with the following string values: "Swing","Hound Dog"
- The first string value "Swing" will be passed into the name variable of the Dance method
- The second string value "Hound Dog" will be passed into the song variable of the Dance method
On line 3 of the main: System.out.println(dance1.toString());
The values of dance1, which are "Tango","Hernandos Hideaway" are printed
On line 4 of the main: System.out.println(dance2.toString());
The values of dance1, which are "Swing","Hound Dog" are printed
Hence, option d answers the question
what is the CPU's role?
Answer:
The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. The computer industry used the term "central processing unit" as early as 1955.
Answer:
The Cpu is like the brain of the computer it's responsible for everything from running a program to solving a complex math equation.
describe PROM, EPROM and EEPROM memories
Answer:
Explanation:
PROM is a Read Only Memory (ROM) that can be modified only once by a user while EPROM is a programmable ROM that can be erased and reused. EEPROM, on the other hand, is a user-modifiable ROM that can be erased and reprogrammed repeatedly through a normal electrical voltage.
HELP URGENTLY!!!!!
Elly supervises an eye doctors office. The office recently received new equipment. To keep that equipment working accurately and dependably, she should:
(Select all that apply.)
Copy the users manual and distribute to all the employees
Identify individuals to complete the tasks
Create a log to document maintenance
Set up auto reminders
Read the manual
List the maintenance tasks
Establish the frequency of the maintenance tasks
Update the software in the office
Note that where Elly supervises an eye doctor's office, and the office recently received new equipment, to keep that equipment working accurately and dependably, she should:
Copy the users manual and distribute to all the employeesCreate a log to document maintenanceSet up auto remindersRead the manualList the maintenance tasksEstablish the frequency of the maintenance tasksUpdate the software in the office.What is the rationale for the above response?In order to ensure that the equipment is working properly and optimally, Elly should distribute the user manual to all employees.
In addition, she should identify individuals to complete maintenance tasks, create a log to document maintenance, set up auto reminders, read the manual, list the maintenance tasks, establish the frequency of the maintenance tasks, and update the software in the office to keep new equipment working accurately and dependably. This will ensure optimal equipment maintenance and lifetime.
Learn more about equipment maintenance:
https://brainly.com/question/21853224
#SPJ1
server.
10. The Domain Name refers to the
a) Mail
b) Google
c) Internet
d) Local
Answer:
C.
Explanation:
What was that show where lowe’s were based off eye colors and the main character had orange eyes that let her mind control people. It was either on netflix or hulu
Answer:Raising Dion?
Explanation:
Was it Raising Dion?
Write an expression that will print "in high school" if the value of user_grade is between 9 and 12 (inclusive).
Answer:
C#
if(user_grade >=9 && user_grade <=12)
{
Console.WriteLine("In Highschool");
}
Python
if user_grade >= 9 & user_grade <= 12:
print("In Highschool")
Java
if(user_grade >=9 && user_grade <=12)
{
System.println("In Highschool");
}
Explanation:
answer 1 question and get 10 points in return
Answer:
3
Explanation:
sorry if I'm wrong...it's been a while since I took a coding class.
Write an expression that will print "in high school" if the value of user_grade is between 9 and 12 (inclusive).
In python:
if 8 < user_grade < 13:
print("in high school")
You would just need to supply the value of the user_grade variable.
Write a program that creates an integer array with 40 elements in it. Use a for loop to assign values to each element of the array so that each element has a value that is triple its index. For example, the element with index 0 should have a value of 0, the element with index 1 should have a value of 3, the element with index 2 should have a value of 6, and so on.
Answer:
public class Main
{
public static void main(String[] args) {
int[] numbers = new int[40];
for (int i=0; i<40; i++){
numbers[i] = i * 3;
}
for (int i=0; i<40; i++){
System.out.println(numbers[i]);
}
}
}
Explanation:
*The code is in Java.
Initialize an integer array with size 40
Create a for loop that iterates 40 times. Inside the loop, set the number at index i as i*3
i = 0, numbers[0] = 0 * 3 = 0
i = 1, numbers[1] = 1 * 3 = 3
i = 2, numbers[2] = 2 * 3 = 6
.
.
i = 39, numbers[39] = 39 * 3 = 117
Create another for loop that iterates 40 times and prints the values in the numbers array
what program we write for nested if in c++ to print something after else part but before inner if else
if(condition){
}
else
//something we want to print
if(condition){
}
else{
}
Answer:
if(condition){
}
else {
// something we want to print
if(condition) {
// ...
}
else {
// ...
}
}
Explanation:
Create code blocks using curly braces { ... }.
Use proper indentation to visibly make it clear where code blocks start and end.
What is the best prediction she could make about this
semester's text?
Natalia's class read Shakespeare's Romeo and Juliet
last semester and took a field trip to see it performed
live in a community theater. Today, Natalia learned that
her class will read another work by Shakespeare this
semester
It is a play.
It is an adventure.
It is a fairy tale.
It is a fable.
Answer:its a play
Explanation:
Answer:
A. It is a play
Explanation:
Got the answer correct on the quiz
describe at least five ways in which information technology can help studying subjects other than computing
Answer:
I'd that IT can help in a great many different fields like
Mathematics, in a manner of solving complex math equations
Statistics, in a manner of creating complex graphs with millions of points
Modeling, in a manner of creating models from scratch, either for cars, personal projects or characters for video games and entertainment
Advertising, in a manner of using IT to create not only the advertisements themselves but also, spreading that advertisement to millions in a single click
Music/Audio, in a manner of creating new sounds and music that wouldn't be able to work in any practical manner
Explanation:
For Questions 1-4, consider the following code:
def mystery1(x):
return x + 2
def mystery2(a, b = 7):
return a + b
#MAIN
n = int(input("Enter a number:"))
ans = mystery1(n) * 2 + mystery2 (n * 3)
print(ans)
What is output when the user enters 9?
Answer:
9 would be entered as a parameter n of class mystery1 and return 9 + 2 = 11 and then 11 * 2 = 22, PLUS,
mystery2 new parameter is 9 * 3 = 27, then 27 + 7 = 34 returned
FINALLY, ans = 22 + 34
ans = 56 printed as output
What term refers to a sequence of statements in a language that both humans and computers can understand?
a
hexadecimal
b
program
c
binary
d
macro
Answer your answer is Macro
Explanation:
Macro shares language both the computer and the programmer can undestand.
Write an application that counts the total number of spaces contained in a quote entered by the user.
Answer:
Explanation:
The following code is written in Java. It asks the user for an input and saves it in a String variable. Then it loops through all the characters in the string and counts the spaces. Finally, it prints the total number of spaces in the String.
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter Line Now:");
String userInput = in.nextLine();
int spaceCount = 0;
for (int x = 0; x < userInput.length(); x++) {
if (userInput.charAt(x) == ' ') {
spaceCount++;
}
}
System.out.println(spaceCount);
}
What is the most vulnerable information that should be protected to prevent unauthorized access to your online files and records?
Answer:
Your user ID and password.
Explanation:
The user Id and password must be protected because when it is exposed to a third party then they can get access to information, data, to things they are not supposed to.
The user Id and password is provided as an authentication measure for one to be able to gain access to a computer system, network or files. It is what grants access to online files and record as it is the case here. It has to be protected for the sake of privacy.
Write a function named findmax()that finds and displays the maximum values in a two dimensional array of integers. The array should be declared as a 10 row by 15 column array of integers in main()and populated with random numbers between 0 and 100.
Answer:
import java.util.*;
public class Main
{
public static void main(String[] args) {
Random r = new Random();
int[][] numbers = new int[10][15];
for (int i=0; i<10; i++){
for (int j=0; j<15; j++){
numbers[i][j] = new Random().nextInt(101);
}
}
for (int i=0; i<10; i++){
for (int j=0; j<15; j++){
System.out.print(numbers[i][j] + " ");
}
System.out.println();
}
findmax(numbers);
}
public static void findmax(int[][] numbers){
int max = numbers[0][0];
for (int i=0; i<10; i++){
for (int j=0; j<15; j++){
if(numbers[i][j] > max)
max = numbers[i][j];
}
}
System.out.println("The max is " + max);
}
}
Explanation:
*The code is in Java.
Create a function called findmax() that takes one parameter, numbers array
Inside the function:
Initialize the max as first number in the array
Create a nested for loop that iterates through the array. Inside the second for loop, check if a number is greater than the max. If it is set it as the new max
When the loop is done, print the max
Inside the main:
Initialize a 2D array called numbers
Create a nested for loop that sets the random numbers to the numbers array. Note that to generate random integers, nextInt() function in the Random class is used
Create another nested for loop that displays the content of the numbers array
Call the findmax() function passing the numbers array as a parameter
A Protocol for networked information
Answer:
Internet Protocol (IP), which uses a set of rules to send and receive messages at the Internet address level; and. additional network protocols that include the Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP), each of which has defined sets of rules to exchange and display information.
Explanation:
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Write a function named power that accepts two parameters containing integer values (x and n, in that order) and recursively calculates and returns the value of x to the nth power.
Answer:
Following are the code to the given question:
int power(int x, int n)//defining a method power that accepts two integer parameters
{
if (n == 0)//defining if block to check n equal to 0
{
return 1; //return value 1
}
else//defining else block
{
x = x * power(x, --n); //use x variable to call method recursively
}
return x; //return x value
}
Explanation:
In the above-given code, a method power is defined that accepts two integer variable in its parameter, in the method a conditional statement is used which can be defined as follows:
In the if block, it checks "n" value, which is equal to 0. if the condition is true it will return value 1.In the else block, an integer variable x is defined that calls the method recursively and return x value.Shelly recorded an audio composition for her presentation. Arrange the following steps that Shelly followed in the proper order.
She added effects to her audio composition.
She saved her audio composition on an optical drive.
She connected her microphone to her computer.
She saved the audio composition in an appropriate file format.
She selected the record option in her DAW.
Answer:
The answer to this question is given below in the explanation section.
Explanation:
Shelly recorded an audio composition for her presentation. She needs to follow the following proper orders to get composition done for her presentation.
She connected her microphone to her computer.She selected the record option in her DAW.She added effects to her audio composition.She saved the audio composition in an appropriate file format.She saved her audio composition on an optical drive.Answer:
She connected her microphone to her computer.
She selected the record option in her DAW.
She added effects to her audio composition.
She saved the audio composition in an appropriate file format.
She saved her audio composition on an optical drive.
Are Dogs are better than video games?
Answer:
In some cases yes.
Explanation:
Some days I really enjoy my video games and other days I enjoy being with my dog but sometimes they are annoying especially if they have way more energy than you