Questions Asked on
June 22, 2009

chemistry
The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:
asked by matt 
physics
The energy given off by 300 grams of an alloy as it cools through 50°C raises the temperature of 300 grams of water from 30°C to 40°C. The specific heat of the alloy (in cal/g C ) is: i know Q=CpM(delta T) but what is what?
asked by jane 
Physics
The engine of a motorboat delivers 30.0 kW to the propeller while the boat is moving at 15.0m/s. What would be the tension in the towline if the boat were being towed at the same speed? I know to use P=Fv and solve for F so P = 3000kN right because 1 kW =
asked by Sarah 
chemistry
How do I prepare 10% w/v HCl from 37%(w/w) HCl (density 1.19g/ml)? Thanks.
asked by Carol 
physics repost bobpursley
The energy given off by 300 grams of an alloy as it cools through 50°C raises the temperature of 300 grams of water from 30°C to 40°C. The specific heat of the alloy (in cal/g C ) is: i know Q=CpM(delta T) but what is what? Responses * physics 
asked by jane 
Physics
A 61 kg skier on level snow coasts 184 m to stop from a speed of 12.0 m/s (A) use the work energy principle to find the coefficient of kinetic friction between the skis and the snow. B) suppose a 75 kg skier with twice the starting speed coasted the same
asked by Sarah 
Calculus
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 22 feet?
asked by Z32 
Physics
A 1200 kg car is moving on the freeway at 65 mph. (A) find the magnitude of its momentum and its kinetic energy in SI units. (b) if a 2400 kg SUV has the same speed asthe 1200 kg car, how much momentum and kinetic energy does it have?
asked by Sarah 
Calculus
A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 2. What are the dimensions of such a cylinder which has maximum volume? Radius? Height?
asked by Z32 
organic.chem
Compound X, C8H17Cl, is a chiral product of the radical chlorination of 4methylheptane. X reacts in SN2 fashion with NaI in acetone to form Z, C8H17I. When the reactant is the Renantiomer of X, only the Renantiomer of Z is formed. What is the structural
asked by melvin 
Algebra
Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x.
asked by Angie 
Math
The question is this: You know that a number is divisible by 6 if it is divisible by both 3 and 2. So why isn't a number divisible by 8 if it is divisible by both 4 and 2? My answer is this: The only prime factors of 6 are 2 and 3. So, if a number is
asked by B.B. 
Calculus
A rancher wants to fence in an area of 5189400 square feet in a rectangular field and then divide it in half with a fence down the middle parallel to one side. What is the shortest length of fence that the rancher can use?
asked by Z32 
Calculus
If 6075 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. Volume=??? cubic cm
asked by Z32 
8math
What are the odds in favour for this event? getting a perfect square when two number cubes labelled 1 to 6 are rolled and the numbers are multiplied. i don't understand how to do this. please help. thank u :)
asked by rebecca 
Calculus
The manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 370 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 5 dollar increase in rent.
asked by Z32 
Calculus
A fence 5 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? [Hint: Determine the length of a ladder
asked by Z32 
Mircoeconomics
A significant difference between monopoly and perfect competition is that: A. free entry and exit is possible in a monopolized industry but impossible in a competitive industry. B. competitive firms control market supply but monopolies do not. C. the
asked by Nick 
Finance. PLEASE HELP ME
1) growth rates The stock price of the company is $76 investors require a 14% rate of return on similar stocks If the company plans to pay a dividend of $5.00 next year the expected growth rate of the company's stock price is ______ percent 2) non constant
asked by Heidi 
Physics
a fun loving 11.4kg otter slides up a hill and then back down to the same place. If she starts up at 5.75 m/s and returns at 3.75 m/s, how much mechanical energy did she lose on the hill and what happened to that energy
asked by Sarah 
history
how were the truman doctrine and the marshall plan relevant to the american foreign policy goal of containment?
asked by y912f 
Statistics
In a blood clinic, each donor is asked to write on a piece of paper if they are HIV positive or not. To maintain privacy, before the donor writes on the paper, he throws a sixsided dice. If the dice is 6, then he is supposed to write “HIV Positive”
asked by Razor 
Algebra
Simplify: Write answers in the form of a + bi, where a and b are real numbers. a. (12i)(1+3i) b. (35i)(82i)
asked by Breanna 
math 209
Area of a sail. The area in square meters for a triangle is given by A(x)=x^2 +5x +6. a.) Find A(5) b) if the height of the sail is x+3 meters, then what is the length of the base of the sail when area is x^2 +5x+6m^2?
asked by trina 
Medical Coding
What is the two subheadings within the Cardiovascular System subsection?
asked by Michelle 
catering
Which of the following is the fermenting agent that converts the wort into beer?
asked by newkid 
Math
I do not understand this problem can somebody please help me with it? Fill in the missing digits in as many ways as possible so the number will be divisible by 6. 3 _ 2 _ Thanks for the help.
asked by B.B. 
Calculus
A rectangle is inscribed with its base on the xaxis and its upper corners on the parabola y=2x^2 What are the dimensions of such a rectangle with the greatest possible area? Width=? Height=?
asked by Z32 
linear programing.
The cheesy company produces two types of cheese with extra sharp cheddar cheese. The cheese spreads are packaged in 120 ounce containers, which are then sold to distributors throughout northeast. The regular blend contains 80% mild cheddar and 20% extra
asked by cocobunniesfromhell 
organic chem
A student's correctly calculated value for the percent recovery of the purified unknown solid in a recrystallization experiment was 102%. Assume that the student performed all steps of the procedure correctly a) comment of the validity of this result;
asked by Laura 
accounting
Can someone please tell me how to set these problems up? I am confused! Lear, Inc., has $800,000 in current assets, $350,000 of which are considered permanent current assets. In addition, the firm has $600,000 invested in fixed assets. a.) Lear wishes to
asked by Angel 
college
imhaving a little bit of trouble starting my reaserch paper and a thesis on kiddnaping can i get an example
asked by Rosemary 
geometry
how can we prove that an exterior angle of a triangle has measure equal to the sum of the measures of the 2 interior angles remote from it
asked by Laura 
algebra help
Factor completely 4v^2+14v =____ another problem is factor completely 4s^281= ____
asked by shelly 
Business
If you were to purchase stock, what sort of information about the company’s stock would you use to make your decision to buy shares of a certain company?
asked by Linda 
math
You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
asked by thomas 
Science
How do the properties of methane relate to its molecular structure?
asked by Kelly 
medical billing and coding from Penn Foster
When writing a research paper and writing a reference page, should you include in the paper that you are writing the refence number after the sentence, or can you just list the references on a separate sheet of paper and call it done?
asked by Shannon 
ChECK Homework English
Homework I Pg.108 (Ex.1)Choose the verb that agrees with its subject according to the conventations for academic and professional writing. 1. There are at least two good reasons for changing motor oil: risk of contamination and danger of addictive
asked by Cathy 
bibliography
i am doing the reaserch paper on one of my uncles who disapeared if i found information of him on a website how would the bliography would be done and i also interviwed some family
asked by Rosemary 
medical billing and coding from Penn Foster
I was wondering if someone coould look at this report and let me if you think it is ok to hand in. The questions are: Does HIPAA affect the patient's access to his/her medical record?if so describe the effect and procedure to obtain access 2)under what 12
asked by Shannon 
Algebra
How can algebra be used to solve this problem? The boy solved 10 problems correctly at 8 cents a problem for a total of 80 cents, and 16 incorrectly at the cost of 5 cents for a total of 80 cents. Therefore, neither the boy nor his father owed each other
asked by Kate 
Algebra
Please Find the difference quotient f(x+h)fx/h for f(x)= 4x9 and simplify
asked by Bonnie 
Grades
I need some help on calculating my current high school GPA. So far, I've completed 8 classes per year (I'm a sophomore, soon to be junior), making that 16 classes total. I also took two middle school classes that count for high school credit. Here's the
asked by Anonymous 
math
What characteristic do the numbers 8, 10, 15, 26, and 33 have that the numbers 5, 9, 16, 18, and 24 don’t have? (Hint: List the factors of the numbers.) Give two more numbers that have this characteristic.
asked by jessica 
college
: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth
asked by Anonymous 
music
how can i do better at the flute and piano?
asked by divya 
social studies
i need info for a project of something called boston massacre
asked by iris 
Literature
Can someone tell me if my statement below is correct? I have to write a paper on The Lottery comparing and constrasting the theme and style. I am not sure if my themes and styles are correct or if I have them mixed up. I have trouble with picking out the
asked by Tim 
infinite mathematic
Section 6.8: Table1: Customer# Random# Time req. Teller Start time End Time 1 10 8 A 9:00 9:08 2 7 5 B 9:00 9:05 3 2 3 C 9:00 9:03 4 3 3 C 9:03 9:06 5 1 3 B 9:05 9:08 6 6 5 C 9:06 9:11 7 4 3 A 9:08 9:11 8 3 3 B 9:08 9:11 9 1 3 A 9:11 9:14 10 10 8 B 9:11
asked by ty 
SAT
Is a 480 for math bad? Would the 660 I got on reading componsate for this?
asked by Andrew 
math
You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
asked by thomas 
math
Find the LCM of the numbers 24 and 32 by using a. the listing multiples method.
asked by thomas 
Calculus
Find the point on the line 5sx+y+3=0 which is the closest to the point (2, 5) (___,___)
asked by Z32 
Editing of Yr 6 exposition
One of te most common issues that as been endlessly open to debate is relative to ..... "junkfood". Banned of unlimited is the question that I have prepared to discuss in this short easy article including its pros and cons. Whether the sale of junkfood
asked by Perplexepenny,O 
science
i need to make a p.h indicator in sience but i cant think of any other than.. tea bags, some sort of juice and.. red cabbage anyone got any sujestions?
asked by sophie 
Advanced Mathematics
verify that cos(90+A)=sinA is an identity.
asked by lily 
Business
Why is a company concerned about its stock price in the secondary market?
asked by Linda 
Health
Who is responsible for paying $250 major medical insurance before a company assumes liability?
asked by Lauren 
acc 260
Philosophical Approaches to ethical decision making matrix
asked by unknown 
science
what does "microscopic" mean?
asked by iormares 
Math
I have a question that I answered and I'm not sure that it is right. Here is my question: Use a calculator to help you write the prime factorization of 51,051. Here is my answer: If the sum of the digits of the number is divisible by 3, then 3 is a factor
asked by B.B. 
Algebra
Let f (x) = x^2 – 3x + 8 and g(x) = x – 5. Find the sum (f + g) (x) and simplify the results.
asked by Gertrude 
math 209
Selling shirts. If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000 100p shirts at a tournament. a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20).
asked by jericia 
math 209
Swimming space. The length of a rectangular swimming pool is 2x 1 meters, and the width is x 2 meters. Write a polynomial A(x) that represents the area. Find A(5).
asked by jericia 
elementry math
Find the LCM of the numbers 24 and 32 by using the prime factorization method.
asked by thomas 
elementry math
The product of two numbers is 180. The LCM of the two numbers is 60. What is the GCF of the numbers? Explain how you know.
asked by chandice 
math
You know that a number is divisible by 6 if it is divisible by both 3 and 2. So why isn’t a number divisible by 8 if it is divisible by both 4 and 2?
asked by chandice 
math
Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.
asked by jessica 
crt/205
Controlling Irrational Fears After 9/11* We present this selection as an example of a fairly wellreasoned argumentative essay. There is more here than arguments—there’s some window dressing and you’ll probably find some slanters here and there as
asked by jim 
Managerial economics
Which one is the best answer A !@#$%^&fortat strategy may be implemented: a. as an attempt to cheat cooperating members of an oligopoly b. as an attempt to acquire market dominance and become a monopolist c. as a punishment strategy for cheating d. a and
asked by Linda 
Managerial Economics
Which one is the best answer 1.Agreeing to be part of a pricefixing cartel is: a.unlikely to yield maximum prices or profits for very long time b.difficult to maintain, but almost guaranteed to ensure maximum profit c.illegal in most countries d.a and b
asked by Linda 
science
does anyone know if, orange juice is a pH indicator??
asked by sophie 
Calculus
Can someone prove (informally) the following theory: If there is a differentiable function, f, that is represented by a Taylor series, T, then the convergence interval for series T is identical to the convergence interval for the termbyterm derivative
asked by Sean 
HCA/270
what are the rules of thumb?
asked by TP 
5th grade
least of possible numberthat rounds to 510
asked by jm 
Cooking
what is a simple recipe to bake brownies thanks:D
asked by Elina 
statistics
There are four entrances to Govt center. The building supervisor wants to know if entrances are equalized. To investigate, 400 people were seen entering the center. The number using each entrances is below. At the .01 significance level is there a
asked by elm