Questions
A small car dealership keeps a log of how many cars it sells. During the last...

A small car dealership keeps a log of how many cars it sells. During the last 7 months, they sold a total of 140 cars. They also monitor accuracy of their forecasting model by calculating the tracking signal. Following is the data for the last 7 months. They use +5 and -5 as their tracking signal UCL and LCL. How is the model performing?

Month Tracking Signal
1 -1.0
2 -1.5
3 -2.0
4 -2.0
5 -3.5
6 -5.8
7 -9.5

In: Operations Management

c# Create a console application that protects an XML file, such as the following example. Note...

c#

Create a console application that protects an XML file, such as the following example. Note that the customer's credit card number and password are currently stored in clear text. The credit card must be encrypted so that it can be decrypted and used later, and the password must be salted and hashed:

<?xml version="1.0" encoding="utf-8" ?>
<customers>
<customer>
<name>Bob Smith</name>
<creditcard>1234-5678-9012-3456</creditcard>
<password>Pa$$w0rd</password>
</customer>
</customers>

In: Computer Science

Suppose a star the size of our Sun, but with mass 5.0 times as great, were...

Suppose a star the size of our Sun, but with mass 5.0 times as great, were rotating at a speed of 1.0 revolution every 18 days. If it were to undergo gravitational collapse to a neutron star of radius 14 km , losing three-quarters of its mass in the process, what would its rotation speed be? Assume also that the thrown- off mass carries off either

part a. no angular momentum

part b. its proportional share three-quarters of the initial angular momentum

In: Physics

A home run is hit in such a way that the baseball just clears a wall...

A home run is hit in such a way that the baseball just clears a wall 16 m high, located 122 m from home plate. The ball is hit at an angle of 33° to the horizontal, and air resistance is negligible. (Assume that the ball is hit at a height of 1.0 m above the ground.)

What is the initial speed of the ball?

How long does it take the ball to reach the wall?

What is the velocity of the ball (x and y-component)?

What is the speed of the ball when it reaches the wall?

In: Physics

I am posting this problem because I've had trouble following the steps listed in similar problems....

I am posting this problem because I've had trouble following the steps listed in similar problems. Please don't answer if you are only going to copy/paste a version of those same steps; It will not be helpful.

When a suspected drunk driver blows 186 mL of his breath through this breathalyzer, the breathalyzer produces an average of 323 mA of current for 10 s. Assuming a pressure of 1.0 atm and a temperature of 24 ∘C, what percent (by volume) of the driver's breath is ethanol?

In: Chemistry

The risk-free rate is expected to remain at current level in the coming years, while the...

The risk-free rate is expected to remain at current level in the coming years, while the market risk premium is expected to increase. Based on this forecast, which of the following statements is correct?

Group of answer choices

The required return will increase for shares with a beta less than 1.0 and will decrease for shares with a beta greater than 1.0.

The required return will increase for all shares but will increase less for shares with higher betas.

The required return for all shares will increase by the same amount.

The required return will increase for all shares but will increase more for shares with higher betas.

You are holding a share that is expected to earn 35% in a booming economy, 15% in a normal economy, and lose 25 % in a recessionary economy. There is a 10 % probability of a boom and a 65 % chance of a normal economy. What is your expected rate of return on this share?

Group of answer choices

7%

25%

19.5%

8.5%

Your friend complains that she cannot earn profits from trading in the stock markets based on public information, but she continually brags to you about the profits she earns based on confidential information she overhears at her workplace. This information is not available to the general public. Given this, you would tend to argue that the stock markets are at best ________ form efficient.

Group of answer choices

Weak

Strong

Semi strong

Perfect

In: Finance

A spherical stainless steel (? = 7,800 kgm-3; c = 460 Jkg-1K-1; k = 17 Wm-1K-1;...

A spherical stainless steel (? = 7,800 kgm-3; c = 460 Jkg-1K-1; k = 17 Wm-1K-1; ? = 0.9) reactor of 1.0-m inner diameter and 1.0-cm wall thickness is filled with reactants (? = 1,100 kgm-3; c = 4,200 Jkg-1K-1) that are initially at 25 ?C. An exothermic reaction within the reactor generates heat uniformly at a temperature-dependent volumetric rate of Qoexp(-A/T), where Qo = 6 kWm-3, A = 85 K and T is the reactive mixture temperature in K. The exterior surface of the reactor is exposed to 25 ?C ambient air with a convective heat transfer coefficient of 20 Wm-2K-1, and also exchanges radiation with surrounding surfaces that are at 35 ?C. The reactant mixture is well stirred with a convective heat transfer coefficient of 250 Wm-2K-1 so that the temperature within the reactor is nearly uniform. You may neglect the thermal capacitance of the reactor wall and consider the instantaneous heat transfer rate through the reactor wall to be equal to the instantaneous rate of heat loss to the air and surroundings.

a) What is the temperature of the reactant mixture after 5 hours of process time?

b) What is the temperature at the outer surface of the reactor at that time?

c) What is the steady-state temperature of the outer surface of the reactor?

In: Other

Complete the following table. (The first row is completed for you.) [H3O+] [OH−] pOH pH Acidic...

Complete the following table.
(The first row is completed for you.)

[H3O+] [OH−] pOH pH Acidic or Basic
1.0×10−8 1.0×10−6 6.00 8.00 basic
_____ _____ _____ 3.65 _____
2.7×10−9 _____ _____ _____ _____
_____ _____ _____ 13.39 _____
_____ 7.6×10−11 _____ _____ _____

Part A

Complete the first column of the table.

Express your answers using two significant figures. Enter your answers in order given in the table separated by commas.

[H3O+] =

nothing

  M  

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Part B

Complete the second column of the table.

Express your answers using two significant figures. Enter your answers in order given in the table separated by commas.

[OH−] =

nothing

  M  

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Part C

Complete the third column of the table.

Express your answers using two decimal places. Enter your answers in order given in the table separated by commas.

pOH =

nothing

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Part D

Complete the fourth column of the table.

Express your answers using two decimal places. Enter your answers in order given in the table separated by a comma.

pH =

nothing

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Part E

Complete the fifth column of the table.

Enter your answers as words acidic or basic. Enter your answers in order given in the table separated by commas.

In: Chemistry

Materials: Reaction Buffer 0.5 M Tris HCl pH 8.0 with 5 mM MgCl2 Alkaline phosphatase: 500...

Materials:

Reaction Buffer 0.5 M Tris HCl pH 8.0 with 5 mM MgCl2

Alkaline phosphatase: 500 μg/mL stock solution in the buffer above. Keep enzyme on ice!

p-nitrophenyl phosphate: 1000 μM and 10000 μM stock solutions in reaction buffer

1) Using the enzyme stock solution above and the dilution equation, calculate the volumes needed to prepare 2 mL of three enzyme dilutions consisting of 100 μg/mL, 125 μg/mL, and 150 μg/mL. Use the reaction buffer to make these dilutions.

2) Calculate the amount of substrate needed for each of the following concentrations 10 μM, 25 μM, 50 μM, 100 μM, 200 μM, 500 μM, 1000 μM, and 2000 μM using the two stock solution concentrations listed above. Use the 1000 μM stock solution to calculate dilutions from 10-200 μM and the 10,000 μM stock solution to calculate from 500 μM-2000 μM. The final volume is 1.0 mL (or 1000 μL) for each dilution. Also calculate the volume of buffer needed, given that we will add 100 μL of the enzyme solution and the final volume is 1.0 mL (or 1000 μL) for each dilution.

In: Chemistry

6) Company is considering the purchase of a piece of equipment in '12. The projected cost...

6) Company is considering the purchase of a piece of equipment in '12.
The projected cost of the equipment is 50,000
The equipment will be depreciated via the MACRS - 5 year life
This equipment is expected to generate the following economics:
Revenue for first year will be          45,700
Revenue will increase by 1.0% per year thereafter
Expenses for first year will be          29,700
Expenses will decrease by 1.0% per year thereafter
Company's Capital Structure is as follows:
Bonds 50,000
Preferred Stock 75,000
Common Stock 0
Company will finance projects based on their historic approach.
Relevant financing information is as follows:
Bond Market rate in year - (2012) 5%
Company Tax Rate 35%
Preferred Stock Information
Sales Price 40.00
Dividend 2.35
Flotation Cost (Percentage) 4.0%
Common Stock Information
Sales Price 50.00
Flotation Cost (Percentage) 2%
Dividend History
Year Dividend
2009 0.98
2010 1.04
2011 1.12
Company will evaluate the first four years of cash flows only
1) Based on Payback criteria of 3 years - should the asset be purchased
2) Based on NPV - Hurdle rate of Cost of Capital plus 2% - should the asset be purchased
3) At what rate is the company indifferent
4) If the company financed solely with P/S, should the asset be purchased

In: Accounting