Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Textbook Question
Chapter 2, Problem 14PP
According to the Coulomb force law, the electric force between two charged particles of charge Q1 and Q2 Coulombs, that are a distance r meters apart, is
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Write a program that calculates the potential energy of 3 charges q1 = 1, q2 = 2, q3 = 3
located at points (1,2, 3), (3, –4, –5), and (-4, 2, –6) respectively. The units are coulombs for
charge and meters for coordinates. The energy is given by the expression
9293
9193
9142
+
T12
U = k
r23
T13
where
is the distance between the charges q; and q;, and k = 9 × 10º in SI units.
Tij
Your
program should print the result on the screen.
the electrical resistance r (in ohms) of a metal wire is given by the formula r = (ml)/ a where m is the resistivity of the metal; l is the lenght of the wire in feer, and a is the cross-sectional area of the wire ( in the circular mils) write a program that allow user to input for l and a for a copper whose resistivity m of copper is 10.4. Calculte the resistance of a wire
You have been asked to write a program to play rock-paper-scissors.
Your program will ask the user to input a number 0, 1, or 2 to denote rock, paper, and scissors respectively.
Your program will then randomly generate a number 0, 1, or 2 to denote the computer’s hand.
The rules for the game are:
•A scissor can cut paper.
•A rock can knock a scissor.
•A piece of paper can wrap a rock.
Let the game run continuously until either the user or the computer wins 3 times, displaying the outcome of each hand. At the end of the game, display a message indicating whether the user or the computer wins
Helpful Hint:
import random
player2= random.randint(0, 2)
Chapter 2 Solutions
Big Java Late Objects
Ch. 2.1 - Declare a variable suitable for holding the number...Ch. 2.1 - What is wrong with the following variable...Ch. 2.1 - Declare and initialize two variables, unitPrice...Ch. 2.1 - Prob. 4SCCh. 2.1 - Some drinks are sold in four-packs instead of...Ch. 2.1 - Prob. 6SCCh. 2.1 - Prob. 7SCCh. 2.1 - Prob. 8SCCh. 2.1 - How would you explain assignment using the parking...Ch. 2.2 - A bank account earns interest once per year. In...
Ch. 2.2 - In Java, how do you compute the side length of a...Ch. 2.2 - The volume of a sphere is given by V=43r3 If the...Ch. 2.2 - Prob. 13SCCh. 2.2 - Prob. 14SCCh. 2.3 - Write statements to prompt for and read the users...Ch. 2.3 - What is wrong with the following statement...Ch. 2.3 - Prob. 17SCCh. 2.3 - What is problematic about the following statement...Ch. 2.3 - What is the output of the following statement...Ch. 2.3 - Using the printf method, print the values of the...Ch. 2.4 - Prob. 21SCCh. 2.4 - Suppose the architect specifies a pattern with...Ch. 2.4 - A robot needs to tile a floor with alternating...Ch. 2.4 - For a particular car, repair and maintenance costs...Ch. 2.4 - The shape of a bottle is approximated by two...Ch. 2.5 - What is the length of the string "Java Program"?Ch. 2.5 - Consider this string variable. String str = "Java...Ch. 2.5 - Use string concatenation to turn the string...Ch. 2.5 - Prob. 29SCCh. 2.5 - Prob. 30SCCh. 2 - Write declarations for storing the following...Ch. 2 - What is the value of mystery after this sequence...Ch. 2 - What is wrong with the following sequence of...Ch. 2 - Write the following mathematical expressions in...Ch. 2 - Write the following Java expressions in...Ch. 2 - What are the values of the following expressions?...Ch. 2 - What are the values of the following expressions,...Ch. 2 - What are the values of the following expressions?...Ch. 2 - Assuming that a and b are variables of type int,...Ch. 2 - Suppose direction is an integer angle between 0...Ch. 2 - Find at least five compile-time errors in the...Ch. 2 - Find three run-time errors in the following...Ch. 2 - Consider the following code segment. double...Ch. 2 - Explain the differences between 2, 2.0, 2, 2, and...Ch. 2 - Explain what each of the following program...Ch. 2 - Write pseudocode for a program that reads a word...Ch. 2 - Write pseudocode for a program that reads a name...Ch. 2 - Write pseudocode for a program that computes the...Ch. 2 - Modify the pseudocode for the program in How To...Ch. 2 - Prob. 20RECh. 2 - You are cutting off a piece of pie like this,...Ch. 2 - The following pseudocode describes how to obtain...Ch. 2 - Suppose you are given a string str and two...Ch. 2 - Prob. 24RECh. 2 - For each of the following computations in Java,...Ch. 2 - Prob. 26RECh. 2 - This chapter contains a number of recommendations...Ch. 2 - Write a program that displays the dimensions of a...Ch. 2 - Write a program that computes and displays the...Ch. 2 - Write a program that reads a number and displays...Ch. 2 - Write a program that prompts the user for two...Ch. 2 - Enhance the output of Exercise E2.4 so that the...Ch. 2 - Write a program that prompts the user for a...Ch. 2 - Write a program that prompts the user for a radius...Ch. 2 - Write a program that asks the user for the lengths...Ch. 2 - Improve the program discussed in How To 2.1 to...Ch. 2 - Write a program that helps a person decide whether...Ch. 2 - Write a program that asks the user to input The...Ch. 2 - File names and extensions. Write a program that...Ch. 2 - Write a program that reads a number between 1,000...Ch. 2 - Write a program that reads a number between 1,000...Ch. 2 - Printing a grid. Write a program that prints the...Ch. 2 - Write a program that reads in an integer and...Ch. 2 - Write a program that reads two times in military...Ch. 2 - Writing large letters. A large letter H can be...Ch. 2 - Write a program that transforms numbers 1, 2, 3, ,...Ch. 2 - Write a program that prints a Christmas tree:...Ch. 2 - Easter Sunday is the first Sunday after the first...Ch. 2 - In this project, you will perform calculations...Ch. 2 - The following pseudocode describes how a bookstore...Ch. 2 - The following pseudocode describes how to turn a...Ch. 2 - The following pseudocode describes how to extract...Ch. 2 - Giving change. Implement a program that directs a...Ch. 2 - An online bank wants you to create a program that...Ch. 2 - A video club wants to reward its best members with...Ch. 2 - Consider the following circuit. Write a program...Ch. 2 - The dew point temperature Td can be calculated...Ch. 2 - The pipe clip temperature sensors shown here are...Ch. 2 - Prob. 12PPCh. 2 - Consider the following tuning circuit connected to...Ch. 2 - According to the Coulomb force law, the electric...
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