Questions
An insulated Thermos contains 128 g of water at 81.3 ˚C. You put in a 12.5...

An insulated Thermos contains 128 g of water at 81.3 ˚C. You put in a 12.5 g ice cube at 0.00 ˚C to form a system of ice + original water. The specific heat of liquid water is 4190 J/kg•K; and the heat of fusion of water is 333 kJ/kg. What is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?

In: Physics

Which of the following is NOT an argument against economic growth? Group of answer choices Growth...

Which of the following is NOT an argument against economic growth? Group of answer choices

Growth may deplete resources.

Growth is often inequitable.

Growth has negative environmental impacts.

Growth leads to an expansion of power.

In: Economics

Write an essay on the National transformation Program (NTP) The essay should be approximately 500 words,...

  • Write an essay on the National transformation Program (NTP)
  • The essay should be approximately 500 words, with Times new roman font and size 12.
  • Do not copy & Paste.
  • Include references.

In: Economics

Write a short essay on The Capital Market Authority of Saudi Arabia. The essay should be...

  • Write a short essay on The Capital Market Authority of Saudi Arabia.
  • The essay should be approximately 500 words,with Times new roman font and size 12.
  • Do not copy & paste.

In: Economics

Sheffield Inc. was authorized to issue 100000 £10 par value ordinary shares. As of December 31,...

Sheffield Inc. was authorized to issue 100000 £10 par value ordinary shares. As of December 31, 2020, the company had issued 54000 shares at an average price of £22 per share. During 2020, the company felt that the shares were undervalued so it purchased 9800 treasury shares at £16 per share. When the share price rebounded later in the year, the company sold 4200 of the treasury shares for £24 per share. Retained earnings was £1666000 at December 31, 2020.

Total equity at December 31, 2020 is

£2697200.

£2994000.

£2764400.

£2798000.

In: Accounting

Delayed Exports has four bonds outstanding. If the relevant tax rate is 35 percent, what is...

Delayed Exports has four bonds outstanding. If the relevant tax rate is 35 percent, what is the after-tax cost of Delayed Exports' debt ? (Do not round your intermediate calculations.)

  

Bond

Coupon Rate

Yield to Maturity

Price Quote (% of Face Value)

Maturity

Face Value

1 6.50%      6.30% 101 6 years        $ 25,000,000   
2 7.60%         6.01% 110      8 years        $ 41,000,000   
3 6.70%         6.42% 103      18 years        $ 45,000,000   
4 7.70%         6.55% 115      30 years        $ 56,000,000   

In: Finance

After corona effects on 1.Infrastructure 2.Transport 3.Business 3.Tech companies. Consider various news sites analyse and then...

After corona effects on

1.Infrastructure

2.Transport

3.Business

3.Tech companies.

Consider various news sites analyse and then answer.But do not copy directly.Use only facts from International news sites.Write in your own words.Thank you.

In: Operations Management

What were the principal causes of industrial disputes and strikes between management and workers in Britain...

What were the principal causes of industrial disputes and strikes between management and workers in Britain Motor Industry from 1945?

In: Economics

7. Please answer questions 7a through 7c below. You produce widgets. Currently you produce 4 widgets...

7. Please answer questions 7a through 7c below. You produce widgets. Currently you produce 4 widgets at a total cost of $40.

7a. What is your average cost of producing widgets? Please show calculation and work.

7b. Suppose that you could produce 6 widgets and the total cost of producing 6 widgets is $30. If you produce 6 widgets, what will your average total cost be? Compared to your answer in 3a, has your average total cost increased or decreased and does your firm experience economies of scale or diseconomies of scale and why? Please show your work and calculations and then explain.

7c. Suppose that you could produce 10 widgets and the total cost of producing 10 widgets is $120. If you produce 10 widgets, what will your average total cost be? Compared to your answer in 7b, has your average total cost increased or decreased and does your firm experience economies of scale or diseconomies of scale and why? Do you think your firm will experience some problems if your firm does experience diseconomies of scale? If so, why? If not, why not? What can you, as a manager of the widget company, do to correct this problem? Explain. Please show your work and calculations and then explain.

In: Economics

1) The amount of time analyzed whether to buy a product is quite long. The demand...

1) The amount of time analyzed whether to buy a product is quite long. The demand for this product is

elastic or inelastic

2) The proportion of the budget spent on the item is very small. The demand for this product is

elastic or inelastic

3) An increase in the quantity demanded could be caused by: (if the product is a superior good with substitute and complementary goods. Choose all of the correct items)

a) an increase in the price of substitute goods

b) a decrease in the price of complementary goods

c) an increase in consumer income levels

4) There are lots of substitutes available. The demand for this product is

elastic or inelastic

5)The product is highly durable. The demand for this product is
      
elastic or inelastic

In: Economics

300-400 words, APA Citation/References What is the relationship between risk and return? What is the significance...

300-400 words, APA Citation/References

What is the relationship between risk and return? What is the significance of this relationship for the investor?

In: Finance

1. Using diagrams, illustrate how the price (P) and the demand (d) for a perfectly-competitive firm...

1. Using diagrams, illustrate how the price (P) and the demand (d) for a perfectly-competitive firm are determined.

2. Using a diagram, show how the perfectly-competitive firm determines its profit-maximizing output.

3. Differentiate between productive efficiency and allocative efficiency.

In: Economics

Write this in your own words: In 100 words or Less How Sulfate attacks (external/internal), Steel...

Write this in your own words: In 100 words or Less

How Sulfate attacks (external/internal), Steel corrosion, carbonation affect the durability of concrete and what prevention methods are used to minimise the impact of these external factors?

In: Civil Engineering

how did various ideologies- whether religious, national, political or racial influence antisemitic thought and behavior between...

how did various ideologies- whether religious, national, political or racial influence antisemitic thought and behavior between 1789 and 1945?

In: Economics

Provide immediate feedback for each mistyped sentence. To do so, modify the Test class’s present_test method...

Provide immediate feedback for each mistyped sentence. To do so, modify the Test class’s present_test method so that it informs the player a mistake has been made, then display the challenge sentence followed by the player’s sentence so the player can determine where the error lies.

#--------------------------------------------------------------------------

#

# Script Name: TypingChallenge.rb

# Version: 1.0

# Author: Jerry Lee Ford, Jr.

# Date: March 2010

#

# Description: This Ruby script demonstrates how to apply conditional logic

# in order to analyze user input and control script execution

# through the development of a computer typing test that

# evaluates the player's typing skills.

#

#--------------------------------------------------------------------------

# Define custom classes ---------------------------------------------------

#Define a class representing the console window

class Screen

def cls #Define a method that clears the display area

puts ("\n" * 25) #Scroll the screen 25 times

puts "\a" #Make a little noise to get the player's attention

end

  

def pause #Define a method that pauses the display area

STDIN.gets #Execute the STDIN class's gets method to pause script

#execution until the player presses the Enter key

end

  

end

#Define a class representing the typing test

class Test

#This method displays the 8-ball greeting message

def display_greeting

  

Console_Screen.cls #Clear the display area

  

#Display a welcome screen

print "\t\t Welcome to the Ruby Typing Challenge game!" +

"\n\n\n\n\n\n\n\n\n\n\n\n\nPress Enter to " +

   "continue. \n\n: "

  

Console_Screen.pause #Pause the game

end

#Define a method to be used to present test instructions

def display_instructions

  

Console_Screen.cls #Clear the display area

puts "\t\t\tInstructions:\n\n" #Display a heading

#Display the game's instructions

puts %Q{ This test consists of a series of 10 typing challenges.

The challenge sentences are presented one at a time. To respond

correctly, you must retype each sentence exactly as shown and press

the Enter key. Your grade will be displayed at the end of the test.

\n\n

Grading format: 9 or better sentences typed correctly will result in an 'A',

8 sentences typed correctly will result in a 'B',

7 sentences typed correctly will result in a 'C',

6 sentences typed correctly will result in a 'D',

less than 6 will result in an 'F'!

\n\n\n\n\n\n\n\n\n

Press Enter to continue.\n\n}

Console_Screen.pause #Pause the game

  

end

#Define a method to be used to present typing challenges

def present_test(challenge)

  

Console_Screen.cls #Clear the display area

print challenge + "\n\n: " #Display the challenge sentence

result = STDIN.gets #Collect the player's input

result.chop! #Remove the end of line marker

  

#Analyze the player input and see if it is correct

if challenge == result then

  

#Keep track of the number of correctly retyped challenge sentences

$noRight += 1

Console_Screen.cls #Clear the display area

#Keep the player informed

print "Correct!\n\nPress Enter to continue."

Console_Screen.pause #Pause the game

  

else

  

Console_Screen.cls #Clear the display area

#Keep the player informed

print "Incorrect!\n\nPress Enter to continue."

Console_Screen.pause #Clear the game

  

end

  

end

#Define a method to be used to display test results

def determine_grade

  

Console_Screen.cls #Clear the display area

  

#To pass the test the player must correctly retype 6 sentences

if $noRight >= 6 then

  

#Inform the player of the good news

print "You retyped " + $noRight.to_s + " sentence(s) correctly. "

puts "You have passed the typing test!\n\nPress Enter to continue."

  

else #The player has failed the test

  

#Inform the player of the bad news

print "You retyped " + $noRight.to_s + " sentence(s) correctly. "

puts "You have failed the typing test!\n\nPress Enter to continue."

  

end

# Grading Sytem for the Challenge

letter Grade = case $noRight

when 9..10 then "A"

when 8 then "B"

when 7 then "C"

when 6 then "D"

else "F"

end

end

# Main Script Logic -------------------------------------------------------

#Initialize global variable that will be used to keep track of the number

#of correctly retyped sentences

$noRight = 0

Console_Screen = Screen.new #Instantiate a new Screen object

Typing_Test = Test.new #Instantiate a new Test object

#Execute the Test object's display_greeting method

Typing_Test.display_greeting

#Execute the Screen object's cls method in order to clear the screen

Console_Screen.cls

#Prompt the player for permission to begin the test

print "Would you like to test your typing skills? (y/n)\n\n: "

answer = STDIN.gets #Collect the player's response

answer.chop! #Remove any extra characters appended to the string

  

#Loop until the player enters y or n and do not accept any other input.

until answer == "y" || answer == "n"

Console_Screen.cls #Clear the display area

#Prompt the player for permission to begin the test

print "Would you like to test your typing skills? (y/n)\n\n: "

answer = STDIN.gets #Collect the player's response

answer.chop! #Remove any extra characters appended to the string

end

#Analyze the player's response

if answer == "n" #See if the player elected not to play

Console_Screen.cls #Clear the display area

#Invite the player to return and play again

puts "Okay, perhaps another time.\n\n"

else #The player wants to take the test

#Execute the Test object's display_instructions method

Typing_Test.display_instructions

  

#Display typing challenges and grade each answer by calling on the

#Test object's present_test method

Typing_Test.present_test "In the end there can be only one."

Typing_Test.present_test "Once a great plague swept across the land."

Typing_Test.present_test "Welcome to Ruby Principles of Ruby Programming"

Typing_Test.present_test "There are very few problems in the world " +

"that enough M&Ms cannot fix."

Typing_Test.present_test "Perhaps today is a good day to die. Fight " +

"beside me and let us die together."

Typing_Test.present_test "Don't cry because it's over, smile because it happened"

Typing_Test.present_test "Be yourself; everyone else is already taken."

Typing_Test.present_test "So many books, so little time."

Typing_Test.present_test "A room without books is like a body without a soul."

Typing_Test.present_test "You know you're in love when you can't fall asleep because reality is finally better than your dreams."

#Notify the player of the results by executing the Test object's

#display_instructions method

Typing_Test.determine_grade

Console_Screen.pause #Pause the game

  

Console_Screen.cls #Clear the display area

#Thank the player for taking the typing test

puts "Thank you for taking the Ruby Typing Challenge.\n\n"

end

In: Computer Science