Write a java program that asks user to input these values: 1. The number of gallons of gas in the tank 2. The fuel efficiency of car in Kilometers per gallon 3. The price of gas per gallon Then compute and display: • The cost per 100 miles. • How far the car can go with the gas in the tank. (kilometers)

Write a java program that asks user to input these values: 1. The number of gallons of gas in the tank 2. The fuel efficiency of car in Kilometers per gallon 3. The price of gas per gallon Then compute and display: • The cost per 100 miles. • How far the car can go with the gas in the tank. (kilometers)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A supermarket awards coupons depending on how much a customer spends on groceries. For example, if you spend $50, you will get a coupon worth eight percent of the amount. The following table shows the percent used to calculate the coupon awarded for different amounts spent. Write a JAVA program that calculates and prints the value of the coupons a person can receive based on groceries purchased. Money Spent Coupon Percentage Less than 10$ No coupon $10-$59 8% $60-$149 10% $150-$209 12% $210 or more 14% Here is a sample run: Please enter the cost of your groceries: 14 You win a discount coupon of $1.12. (8% of your purchase)
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java Suppose a launched toy rocket's height is computed as h = vi*t - 5t2. vi is the initial velocity, and t is time in seconds since the launch (starting at 0). Write a java program to read the initial velocity, then output the time and the rocket's height once per second. Stop when the height would be negative, meaning the rocket hit the ground (don't print the negative). Assume all values are integers. Ex: For input 20, the output is: 0 0 1 15 2 20 3 15 4 0 Hints: Use a while loop. t squared is easily calculated as t * t. Use this expression for the while loop: (rocketHeight >= 0). Don't forget to increment time inside the while loop (otherwise you'll get an infinite loop). import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int rocketHeight = 0; int initialVelocity = 0; int timeSinceLaunch = 0; /* Type your code here. */ }}
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The two forces acting on an aircraft in flight are lift (acting upwards) and weight (acting downwards). If the lift of the aircraft equals the weight of the aircraft, then the aircraft neither goes up nor down, it is in level flight. If the lift is greater than the weight, then the aircraft climbs (gains altitude). If the weight is greater than the lift, then the aircraft descends (loses altitude) Write a Java program named Flying that calculates whether an aircraft is flying level, climbing or descending. The basic equation to calculate this lift is known as the Flight Equation. The Flight Equation is: L = 1 / 2 * ρ * v2 * s *cl where L = lift (in Newtons), this must equal the weight of the aircraft for the aircraft to fly. To convert kilograms to Newtons multiply kilograms by 9.8 ρ = density of the air, in kg / m3       This value is a maximum of 1.2 at sea level and decreases as altitude (height)       increases v = current speed, in metres / second of the aircraft. s = surface area…
The two forces acting on an aircraft in flight are lift (acting upwards) and weight (acting downwards). If the lift of the aircraft equals the weight of the aircraft, then the aircraft neither goes up nor down, it is in level flight. If the lift is greater than the weight, then the aircraft climbs (gains altitude). If the weight is greater than the lift, then the aircraft descends (loses altitude) Write a Java program named Flying that calculates whether an aircraft is flying level, climbing or descending. The basic equation to calculate this lift is known as the Flight Equation. The Flight Equation is: L = 1 / 2 * ρ * v2 * s *cl where L = lift (in Newtons), this must equal the weight of the aircraft for the aircraft to fly. To convert kilograms to Newtons multiply kilograms by 9.8 ρ = density of the air, in kg / m3       This value is a maximum of 1.2 at sea level and decreases as altitude (height)       increases v = current speed, in metres / second of the aircraft. s = surface area…