How/why does the chemical species F- (fluoride) at concentrations 3.22 ppm cause fish death? Explain your answer in a typed paragraph.

Write a program that prompts the user to enter a date in the format mm/dd/yyyy
where mm is the month , dd is the day and yyyy is a 4 digit year
Check if the date is valid by seeing month is between 1 and 12, day is between 1 to 31 and year is between 1800 to 3000. Also check that if month is 2, day is between 1 to 29
If the date is valid then display the date back in following format dd month year. Use of SimpleDateFormat Java Class is NOT allowed to do this assignment. You need to use String functions from Chapter 4 to do this assignment.

Following is a sample run:
Enter a date in the format mm/dd/yyyy:
02/23/1999
23 Feb 1999

Following is another sample run:

Enter a date in the format mm/dd/yyyy:
02021999
Input String Length should be 10

Following is another sample run:

Enter a date in the format mm/dd/yyyy:
02-23-2000
Invalid Date Format

Following is another sample run:

Enter a date in the format mm/dd/yyyy:
23/02/2000
Invalid Date

A child on a sled is travelling a total distance of 93 m down a dirt hill with an angle of 30 degrees from the horizontal from the top of the hill. The mass of the child and sled is 65 kg. The initial velocity is zero and the final velocity is 5.0 m/s. (a) What is the time it takes to travel down the hill? (b) What is the acceleration down the hill? (c) What is the force of friction? (d) What is the coefficient of kinetic friction?

1)

The provided file has syntax and/or logical errors. Determine the problem(s) and fix the program.

Grading

When you have completed your program, click the Submit button to record your score.

// Uses DisplayWebAddress method three times
using static System.Console;
class DebugSeven1
{
static void Main()
{
DisplayWebAddress;
Writeline("Shop at Shopper's World");
DisplayWebAddress;
WriteLine("The best bargains from around the world");
DisplayWebAddres;
}
public void DisplayWebAddress()
{
WriteLine("------------------------------");
WriteLine("Visit us on the web at:");
WriteLine("www.shoppersworldbargains.com");
WriteLine("******************************");
}
}

2)

The provided file has syntax and/or logical errors. Determine the problem(s) and fix the program.

Grading

When you have completed your program, click the Submit button to record your score.

// Address an envelope using names and addresses
// stored in two parallel arrays
using static System.Console;
class DebugSeven2
{
static void Main()
{
string[] addressees = {"Ms. Mary Mack", "Mr. Tom Thumb", "Dr. Seuss"};
string[] addresses = {"123 Main", "456 Elm" "87 Maple"};
for(int x = 0; x < addressees.Length; ++x)
AddressEnvelope(addresses[x], addresses[x]);
}
private static void AddressEnvelope(string person, string street)
{
WriteLine("To : {0}", person);
WriteLine(" {1}", street);
for(x = 0; x < 30; ++x)
Write("-");
WriteLine();
}
}

Two stationary positive point charges, charge 1 of magnitude 3.05nC and charge 2 of magnitude 1.75nC , are separated by a distance of 44.0cm . An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges.

What is the speed vfinal of the electron when it is 10.0cm from charge 1?

Express your answer in meters per second.

An engine operates with four essential variables controlling its operation. For the engine to be operating properly, at least two of its control variables must be present at the same time. However, when the machine is not operating correctly, we wish to have some signal to alert us to the problem. Design a circuit to implement the state when the alarm signal is present

Bonnie and Clyde are married and have purchased a comprehensive major medical policy which covers them and their two sons, Smith and Wesson. The policy has a $500 calendar year family deductible, a $2,500 stop-loss provision, and an 80% co-insurance clause. The following losses occur: On January 1, 2013 Bonnie was treated for an infection at a cost of $200, on July 1, 2013 Smith was treated for an injury suffered while waterskiing at a cost of $10,000, on December 5, 2013 Clyde underwent eye surgery at a cost of $1,500, and on January 5, 2014 Wesson was treated for a broken leg at a cost of $2,000. How much will the insurer pay for each of these losses?

steam given inlet properties. It exits an isentropic turbine with a heat loss of 20 kj / kg at a pressure of 0.1 mpa. Mass flow of the fluid is 10 kg / h.
fluid :
a)enthalpy at the exit
b)temperature at outlet
c)heat transfer
d)degree of dryness at the outlet
e)work from turbine
calculate
input features
1.6 Mpa . 300 C water

The mean cost of domestic airfares in the United States rose to an all-time high of $375 per ticket. Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard deviation of $115. Use Table 1 in Appendix B.

a. What is the probability that a domestic airfare is $560 or more (to 4 decimals)?

b. What is the probability that a domestic airfare is $240 or less (to 4 decimals)?

c. What if the probability that a domestic airfare is between $320 and $480 (to 4 decimals)?

d. What is the cost for the 5% highest domestic airfares? (rounded to nearest dollar)

Andretti Company has a single product called a Dak. The company normally produces and sells 81,000 Daks each year at a selling price of $42 per unit. The company’s unit costs at this level of activity are given below:

A number of questions relating to the production and sale of Daks follow. Each question is independent.

Required:

1-a. Assume that Andretti Company has sufficient capacity to produce 113,400 Daks each year without any increase in fixed manufacturing overhead costs. The company could increase its unit sales by 40% above the present 81,000 units each year if it were willing to increase the fixed selling expenses by $140,000. What is the financial advantage (disadvantage) of investing an additional $140,000 in fixed selling expenses?

1-b. Would the additional investment be justified?

2. Assume again that Andretti Company has sufficient capacity to produce 113,400 Daks each year. A customer in a foreign market wants to purchase 32,400 Daks. If Andretti accepts this order it would have to pay import duties on the Daks of $2.70 per unit and an additional $29,160 for permits and licenses. The only selling costs that would be associated with the order would be $1.70 per unit shipping cost. What is the break-even price per unit on this order?

3. The company has 500 Daks on hand that have some irregularities and are therefore considered to be "seconds." Due to the irregularities, it will be impossible to sell these units at the normal price through regular distribution channels. What is the unit cost figure that is relevant for setting a minimum selling price?

4. Due to a strike in its supplier’s plant, Andretti Company is unable to purchase more material for the production of Daks. The strike is expected to last for two months. Andretti Company has enough material on hand to operate at 25% of normal levels for the two-month period. As an alternative, Andretti could close its plant down entirely for the two months. If the plant were closed, fixed manufacturing overhead costs would continue at 35% of their normal level during the two-month period and the fixed selling expenses would be reduced by 20% during the two-month period.

a. How much total contribution margin will Andretti forgo if it closes the plant for two months?

b. How much total fixed cost will the company avoid if it closes the plant for two months?

c. What is the financial advantage (disadvantage) of closing the plant for the two-month period?

d. Should Andretti close the plant for two months?

5. An outside manufacturer has offered to produce 81,000 Daks and ship them directly to Andretti’s customers. If Andretti Company accepts this offer, the facilities that it uses to produce Daks would be idle; however, fixed manufacturing overhead costs would be reduced by 30%. Because the outside manufacturer would pay for all shipping costs, the variable selling expenses would be only two-thirds of their present amount. What is Andretti’s avoidable cost per unit that it should compare to the price quoted by the outside manufacturer?

c++ problem:

Implement a class money. You must have friend functions for I/O that overload << and >>. You must have multiple constructors, You must implement a percentage method,+,-, <,>. There is a starting money class in your text.

Example output:

Enter an amount of money: $14.33

Your amount is $14.33

My amount is $10.09

One of us is richer.

You have more money than me.

10% of your money is: $$1.43

$14.33 + $10.09 equals $24.42

$14.33 - $10.09 equals $4.24

Press any key to continue . . .

What real-world evidence would lead you to believe that firms were acting as Cournot oligopolists? Stackelberg oligopolists? Bertrand oligopolists? Please give example of industries where these firms might exist.

Consider a model in which M balls are distributed between two bins, and at each time point one of the balls is chosen at random and is then removed from its bin and placed in the other one. Let Xn denote the number of balls in bin 1 after the nth switch and let m_n = E[Xn].

(a) Classify all the states of this chain as recurrent or transient (justify your answer!)

(b) Find E[X2|X0 = 2]