QUESTION5: The Speed of Sound. The following table shows the approximate speed of sound in air, water, and steel: Medium Speed Air Water Steel 2,100 feet per second. 3,900 feet per second. 14,400 feet per second. Write a program that asks the user to enter "air", "water", or "steel", and the distance that a sound wave will travel in the medium. The program should then display the amount of time it will take. You can calculate the amount of time it takes sound to travel in air with the following formula: Time = Distance* 1,100 You can calculate the amount of time it takes sound to travel in water with the following formula: Time = Distance/ 14,900. You can calculate the amount of time it takes sound to travel in steel with the following formula: Time Distance/ 16,400.

QUESTION5: The Speed of Sound. The following table shows the approximate speed of sound in air, water, and steel: Medium Speed Air Water Steel 2,100 feet per second. 3,900 feet per second. 14,400 feet per second. Write a program that asks the user to enter "air", "water", or "steel", and the distance that a sound wave will travel in the medium. The program should then display the amount of time it will take. You can calculate the amount of time it takes sound to travel in air with the following formula: Time = Distance* 1,100 You can calculate the amount of time it takes sound to travel in water with the following formula: Time = Distance/ 14,900. You can calculate the amount of time it takes sound to travel in steel with the following formula: Time Distance/ 16,400.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter4: Control Structures I (selection)

Section: Chapter Questions

Problem 20PE: The cost of renting a room at a hotel is, say $100.00 per night. For special occasions, such as a...

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The cost of renting a room at a hotel is, say $100.00 per night. For special occasions, such as a wedding or conference, the hotel offers a special discount as follows: If the number of rooms booked at least 10, the discount is 10%; at least 20, the discount is 20%; and at least 30, the discount is 30%. Also if rooms are booked for at least three days, then there is an additional 5% discount. Write a program that prompts the user to enter the cost of renting one room, the number of rooms booked, the number of days the rooms are booked, and the sales tax (as a percent). The program outputs the cost of renting one room, the discount on each room as a percent, the number of rooms booked, the number of days the rooms are booked, the total cost of the rooms, the sales tax, and the total billing amount. Your program must use appropriate named constants to store special values such as various discounts.
Create a change-counting game that gets the user to enter the number of coins required to make exactly one dollar. The program should let the user enter the num- ber of pennies, nickels, dimes, and quarters. If the total value of the coins entered is equal to one dollar, the program should congratulate the user for winning the game. Otherwise, the program should display a message indicating whether the amount entered was more than or less than one dollar.
Question # 4: Write a program that calculates the electricity bill. The rates of electricity per unit are as follows: If the units consumed are 300 and 8 2000 2750 Question # 6: Write a program that converts the angle from degree to radian and displays each value.
The monthly payment for a givenloan pays the principal and the interest. The monthly interest is computed by multiplyingthe monthly interest rate and the balance (the remaining principal). The principalpaid for the month is therefore the monthly payment minus the monthly interest.Write a program that lets the user enter the loan amount, number of years, and interestrate then displays the amortization schedule for the loan. Here is a sample run: Loan Amount: 10000 ↵EnterNumber of Years: 1 ↵EnterAnnual Interest Rate: 7 ↵EnterMonthly Payment: 865.26Total Payment: 10383.21Payment# Interest Principal Balance1 58.33 806.93 9193.072 53.62 811.64 8381.43...11 10.00 855.26 860.2712 5.01 860.25 0.01
Write a program that calculates the future value of an investment at a given interest rate for a specified number of years. The formula for the calculation is: futureValue = investmentAmount * (1 + monthlyInterestRate)years*12 Use text fields for the investment amount, number of years, and annual interest rate. Display the future amount in a text field when the user clicks the Calculate button,
The great circle distance is the distance betweentwo points on the surface of a sphere. Let (x1, y1) and (x2, y2) be the geographicallatitude and longitude of two points. The great circle distance between the twopoints can be computed using the following formula:d = radius X arccos(sin (x1) X sin(x2) + cos(x1) X cos(x2) X cos(y1 - y2))Write a program that prompts the user to enter the latitude and longitude of twopoints on the earth in degrees and displays its great circle distance. The averageradius of the earth is 6,371.01 km. Note you need to convert the degrees into radiansusing the Math.toRadians method since the Java trigonometric methods useradians. The latitude and longitude degrees in the formula are for north and west.Use negative to indicate south and east degrees. Here is a sample run: Enter point 1 (latitude and longitude) in degrees: 39.55 −116.25 ↵EnterEnter point 2 (latitude and longitude) in degrees: 41.5 87.37 ↵EnterThe distance between the two points is…
The screen size of a TV is given by the length of the rectangular diagonal. Traditional TVs come in 4:3 ratio, that is, the ratio of length to width is 4 to 3. This means, if the length is x inches, then the width is (3/4)x. LCD TVs come in 16:9 ratio. Write a program that prompts the user to input the length of the diagonal (in inches) of the screen and allows the user to select which type of TV’s screen length, screen width, and screen area the user would like to calculate. Have the program display the desired results.
Write a program that calculates the future value of an investment at a given interest rate for a specified number of years. The formula for the calculation is as follows:futureValue = investmentAmount * (1 + monthlyInterestRate)years * 12 Use text fields for users to enter the investment amount, years, and interest rate. Display the future amount in a text field when the user clicks the Calculate button, as shown in Figure 9.22b.
Assignment: Carefully read the instructions and write a program that reads the following information and prints a payroll statement. Employee’s name (e.g., Smith)Number of hours worked in a week (e.g., 10)Hourly pay rate (e.g., 9.75)Federal tax withholding rate (e.g., 20%)State tax withholding rate (e.g., 9%) In summary, design a program to• Prompt user for 5 values and read the values using Scannero Use method .nextLine() to get the String for the nameo Use method .nextDouble() to get all other numeric values• Calculating the Gross payo Gross pay = hours worked * hourly pay rate• Calculating the Federal withholdingo Federal withholding = Gross pay * federal tax withholding rate• Calculating the State withholdingo State withholding = Gross pay * state tax withholding rate• Calculating the Total deductiono Total deduction = Federal withholding + State withholding• Calculating the Net Payo Net Pay = Gross pay – Total deduction• Formatting the output same as the Sample run (Use ONLY…
The two roots of a quadratic equationax2 + bx + c = 0 can be obtained using the following formula:b2 - 4ac is called the discriminant of the quadratic equation. If it is positive, theequation has two real roots. If it is zero, the equation has one root. If it is negative,the equation has no real roots.Write a program that prompts the user to enter values for a, b, and c and displaysthe result based on the discriminant. If the discriminant is positive, display tworoots. If the discriminant is 0, display one root. Otherwise, display “The equationhas no real roots.”Note you can use Math.pow(x, 0.5) to compute √x. Here are some sampleruns: Enter a, b, c: 1.0 3 1 ↵EnterThe equation has two roots -0.381966 and -2.61803
Question: Party budget planning - complex Prompt the user to enter their current budget and the number of people who need to share a meal. You are ordering food from a restaurant that has two menu items: Tacos $4 Empanadas $3 Calculate and print out all the options of meals where the budget is used entirely(where possible) and each person has an equal number of items to eat. They may eat different things, but everyone gets the same number of food items, e.g. 2 tacos or 1 empanada and 1 taco or 2 empanadas. Hints: Here are some things that might help you in your solution. If total items purchased does not equally divide by the number of diners, then abandon that combination. It may help to calculate the max number of empanadas that the budget can buy and also the max number of tacos that the budget could buy. These can be thought of as upper bounds in your loops. In your solution, keep track of items per person Also, keep track of total number of viable solutions, as that might…
Question: Party budget planning - complex Prompt the user to enter their current budget and the number of people who need to share a meal. You are ordering food from a restaurant that has two menu items: Tacos $4 Empanadas $3 Calculate and print out all the options of meals where the budget is used entirely(where possible) and each person has an equal number of items to eat. They may eat different things, but everyone gets the same number of food items, e.g. 2 tacos or 1 empanada and 1 taco or 2 empanadas. Hints: Here are some things that might help you in your solution. If total items purchased does not equally divide by the number of diners, then abandon that combination. It may help to calculate the max number of empanadas that the budget can buy and also the max number of tacos that the budget could buy. These can be thought of as upper bounds in your loops. In your solution, keep track of items per person Also, keep track of total number of viable solutions, as that might…