Friday
April 18, 2014

Posts by leah


Total # Posts: 345

English
Please help write a reaction on this Article, I want to give good presentation. How can I make it interesting? Thank you! So, far I think the Author is Energy literate and motivates readers through his words. Please tell me how I can include "Energy conversion, Energy eff...

algebra
If a rocket is launched with an initial velocity of 1600 feet per second when will the rocket be 14400 feet high?

chemistry
A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.90 atm. The partial pressure of hydrogen is 0.500 atm and the partial pressure of argon is 760. mm Hg. What is the partial pressure of helium?

Physics
A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the force the per...

Physics
A heavy-duty stapling gun uses a 0.162-kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 32657 N/m). The mass of this spring may be ignored. Squeezing the handle of the gun first compresses the ram s...

Physics
A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s

algebra
On the day a child was born, a lump sum P was deposited in a trust fund paying 6.5% interest compounded continuously. Use the balance A of the fund on the child's 29th birthday to find P. (Round your answer to the nearest cent.) A = $5,000,000 P = $1

English Lit
Thanks for the great definitions- Do you think I was right on either of them? The first question slant rhyme and the secondcaesura?

English Lit
I have two questions about these Emily Dickinson's "Wild Night" 1.Which best describes the rhyme in the second stanza--internal rhyme,slant rhyme,feminine rhyme,descending rhyme or no rhyme Would it be slant rhyme? 2.Which is the following sound device used in th...

penn foster world history
i hope someone can help me as well.

Pre-Calculus
Thank you

Pre-Calculus
Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

Pre-Calc
Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

math
A pair of sneakers cost s dollars. A pair of socks costs k dollars. If the store charges 5% sales tax, write an expression for the cost of one pair of socks and one pair of sneakers.

Math
Jan is on year younger than her brother Bill and on year older then her sister Sue. The sun of the three children ages is 57. How old is each child.k

math
Posted by kathy on Monday, September 26, 2011 at 8:05pm. 1.the square og 2 is the same as two times the difference of g and 10. 2. the product of 3 and the square of g equals the sum of thirty and the product of nine and g. i really need help on this i dont get it. thanks

Physics
A book is moved once around the edge of a tabletop with dimensions 1.75m x 2.25m. If the book ends up at the initial position, what is its displacement? If it completes its motions in 23s, what is its average velocity? What is its average speed?

Biomechanics
How do you compute the additional work done after a stretch-chorten cycle?

math
A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) under this transformation is

Accounting
purchased dental equipment at 15,000 and invested cash of 500,000

math
A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) is

math
Indicate the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5).

math
The slope of a line that is perpendicular to a line whose slope is -2/7 is

geometry
Indicate the equation of the line through (2, -4) and having slope of 3/5.

geometry
In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.

math
In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.

Chemistry
What type(s) of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H2O have a relatively strong or weak attraction to one another? Explain. Please and thank you!!

math
a government bod pays 100 in a year at a discount rate of 5%(assume simple interest). How much did the bond cost? What is the annual percentage rate? Should it be more or less than 5%?

writing
Compare and contrast your abilities as an academic writer now as opposed to when you began your studies at the University. Using four comparatives and four superlatives within your responses, explain what has led to these changes and what changes you will make in the future.

simplex Method
A company manufactures two products, A and B, on two machines, I and II. It has been determined that the company will realize a profit of $3/unit of product A and a profit of $4/unit of product B. To manufacture 1 unit of product A requires 6 min on machine I and 5 min on mach...

Simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 27x + 27y + 36z subject to x + y + 3z < 15 4x + 4y + 3z < 65 x > 0, y > 0, z > 0 x + y = z = P =

simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 5x + 4y subject to 3x + 5y < 78 4x + y < 36 x > 0, y > 0 x = y = P =

Simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 10x + 6y subject to x + y < 80 3x < 90 x > 0, y > 0 x = y = P =

geometry
The perimeter of a triangle ABC is 58cm.The base of the right triangle is 17 cm. What is th area of the right triangle and how do you figure it out?

HELPPP
Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0

math
Maximize P = 2x − 3y subject to x + 2y ≤ 14 6x + y ≤ 18 x ≥ 0, y ≥ 0

Chemistry
when 5.00 g of CaCl2 dissolves in 50.0g of water, what is the boiling point of the solution

Math
Which of the flowing formulas a correct rewriting of the formula a=6b - 12? A. b= a- 12/6 B. b= a + 12/6 C. b= a/6 + 12 D. b= 6a - 12

math
Formulate a system of equations for the situation below and solve. A theater has a seating capacity of 660 and charges $2 for children, $4 for students, and $6 for adults. At a certain screening with full attendance, there were half as many adults as children and students comb...

math
Pivot the system about the element in row 2, column 1. –5 5 –7 10 4 4

math
pivot the system about the element in row 2, column 1: -5 5 l -7 10 4 l 4

Chemistry
A solution contains a mixture of Cl- and Br- ions. Can both be positively identified? Briefly explain and write appropriate equations to support your answer.

math
A = _,b = 12yd,h = 16 yd

math
what is A = 37.5 cm 2,b = 8 in.;h =

chemistry
a certain solution contains 0.35 mol of HCl in 1200 mL of water. What is the pH of the solution?

Math
(4y + 5) /2 = y + 9? Can you please help me solve this?

maths
Chris wants to put a concrete path and a fence around his rectangular garden. The concrete path will be 1 meter wide and the fence will go around the edge of the path. The garden itself measures 5meter by 8 meters. A) calculate the perimeter of thr fence. B)Calculate the area ...

math
A music store offers a prize to a computer who can guess the closest, the number of jelly beans that fill a litre jar on the counter. Estimate the number of jelly beans in the jar if 1 jelly bean is approximately 2cm long (h) by 1.5cm in diameter(d)

Math
Space C has a base of 20 feet and a height of 24 feet and the two sides are both 26 feet (it is a parrallogram).... Space c will be tiled and used for an eating area. Each tile measures 1 square foot and cost $2. How much will it cost to tile the floor?

Math
You want to estimate the mean amount spent by customers at a local gas station with 98% confidence and a margin of error of no more than $2. Preliminary data suggests that the standard dev. is $5.1 is a reasonable estimate for the standard dev. for all customers. How large a s...

Physics-Please help-Thank you!!
Thank you so much-that's what I was doing wrong

Physics-Please help
Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

Physics nd the TI84 Calculator
Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

Physics help on the TI-84 calculator
Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

Physics
Gind the force between charges of +10.o uC and -50.0 uC located 20.0 cm apart

math
how many times must the number 5 be subtracted to find the quotient of 5/5?

Please help! (Calculus)
Solve initial value problem explicitly: 1. y'= ye^-x, y(0)=1 2. y'= 5xe^-y, y(1)=1

Math
Are the differential equations separable or not? 1. y'= ye^(x+y) 2. y'= ye^(xy) 3. y'= y(xcos(y)) If they are, could you show how? Any help, even on one, would be extremely appreciated!

geometry
Two circles of equal radius intersect each other such that each circle passes through the center of the other circle. Find the equation for the perimeter of this figure.

Physics
A 5.0g silver spoon at 20.0C is placed in a cup of coffee at 90.0C. How much heat does the spoon absorb from the coffee to reach a temperature of 89.0C?

Physics
A 5.0g silver spoon at 20.0C is placed in a cup of coffee at 90.0C. How much heat does the spoon absorb from the coffee to reach a temperature of 89.0C?

Pre-Algebra Math
A bank teller is counting his money and notices that he has an equal number of tens and twenties. He also had $147 in other bills. If the total value of the bills he has is $1,167, how many tens and twenties does he have What would be the equation in algebra?

adult education
Why does the chosen developmental theorist appeal to you? Relate the chosen theory to a recent or upcoming developmental stage or phase in your own life.

math
what is 7 16th plus 3 8th please help me i am hopeless

please help me, physics
Five moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 410 to 200 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include the algebraic sign. J

physics
would it be .55 converted to g times cg of aluminum which according to the link is .90 time the differnece in T which is 660-180

Math
A triangle with two congruent sides and two angles that both mesuare 45 is a. scalence and right b. isosceles and acute c. isosceles and right d.equilateral and acute

Biology
a) How do CO2 and O2 levels in the blood regulate breathing movements? b) Explain how these mechanisms are a good example of homeostasis. Help me please :(

Chemistry
What is the chemical symbol for bromine vapour?

Physics - help please!
A 20 kg mass is at rest on a level surface where the coefficient of static friction is 0.68. a) How much force will it take to get the mass to move. b) If a horizontal applied force of 72 Newtons is acting on the mass, how much friction is acting?

Chemistry
Explain why the calculated value for the (1) enthalpy of combustion for propane using bond energies (bond breaking and bond formation)might not be in close agreement to the values calculated using (2) Hess Law and the values calculated using the (3) summation of the change in ...

Chemistry
For Carbon dioxide, for a volume of 500 mL and temperature of 100 degrees celcius, calculate the pressures using the ideal gas law and the van der Waals equation. Explain any dicrepancies in the calculated values. Ideal Gas Equation: Van Der Waals Equation Pressure: Explanation:

AP Chemistry
Which response includes all of the following LiOH, KOH, Ni(OH)2, Mg(OH)2, Ca(OH)2 that are insoluble bases, and no others?

physics
A 50 kg boy picks up a 11 kg stereo and raises it 0.75 m from the floor to a tabletop. How much work did he do on the stereo? How much work did he do to raise his own center of mass 0.40 m in the process? I'm assuming you use W=mgy equation but do you consider the weight o...

Science
What weather would it be when: A. a cold front is moving into an area that has warm, moist air. B. A warm front is moving into an area that has cold, dense air. C. A cool sea breeze is blowing inland, causing warm, humid air to rise. D. Air pressure is falling and the temperat...

Chemistry 1
I have trouble understanding ratios and relativity so I can't understand how to use atomic mass units. Here is an example from my book: How many grams of iron would contain the same number of iron atoms as the number of carbon atoms contained in 1.000 g of carbon? Solution...

Verb Tense
As I further my education, I am securring my future Net Worth. Is future the verb? Is this correct?

Chemistry
The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?

physics
A car with a mass of 1435 kg moves at 11 m/s. What braking force is needed to bring the car to a halt in 10 s?

Math
I'm doing homework and stuck on this question: What percent of 3 1/3 is 3?

English
On the 6 one, say this: She recommended THAT I should read the book.

physics
The charges of two identical aluminum speheres are -24uC and +4.0uC. The spheres are brought together so they simultaneously touch each other. They then seperated and placed on the X-axis. What is the net force exerted b one sphere on another after seperation?

math
i sorry...i meant to say kristen has 58 cousins... subtract 10 from 68 then make sure the total adds to 68. Disregard first response

math
kristen has 28 cousins. Subtract 10 from 58. just make sure that the total adds to 68

calculus
yes it is. Thank you very much for your help.

calculus
let f(x)=x+2/x+8. what does f^-1(-4) equal?

calculus
let f(x)=x+2/x+8. what does f^-1(-4) equal?

Physics
A particle of mass m0 is given a kinetic energy equal to one-third its rest-mass energy. How fast must the particle be traveling

calculus
what is the antiderivative of f(x)= x^4-2 sq root(X) +3/x^3

Spanish
how would you answer this question with affirmative commands and a direst object pronoun? Leo el libro de la historia de Oaxaca? Visito los museos? Compro la chaqueta? Escribo cartes? Compro el video sobre Monte Alban?

Spanish
I need to create a sentence to tell the following people's opinions. Tu / que / es aburrido(a) Yo / Que / es emocionante Nosotros/ que / es important para la ciudad. Los maetros/ que / es interesante Mi amigo(a) / que / es divertido(a)

Accounting
I need help with this problem. Could someone possibly explain to me how to prepare the journal entry for this problem? Prepare journal entries to record each of the following purchases transactions of a merchandising company. Show supporting calculations and assume a perpetual...

Art
I'm trying to find out what the differences and similarities are between: Impressionism Neoclassicism and Abstract Expressionism Examples of these arts are: The Emperor Napoleon in His Study at the Tuileries by Jacques Louis David (Impressionism) The Luncheon of the Boatin...

Social Studies
What is a small island off the coast of Syria in the Mediterranean Sea?

English
Yes, that is true.

English
ok i got all of them except for 5. b. 11. d. 14. c. 15. a. 16. c. 18. c. 19. b. 20. d. 23. b. can you also check these answers please =]

English
5.a 6.c 11.a 12.b 14.a 15.c 16.d 17.b 18.a 19c 20.a 21.b 22.d 23c 24.a 25.b 26.d 27.c 28.d 29.c 30.a can u check these answers

English
5. Sarita's party takes place at night and all the villagers are gathered there. How do these details help make the party a good setting for the stranger to accomplish his goal? (1 point) * He can arrive and escape without people seeing him. * It will take longer for the p...

computer
Can you explain step by step how data is processed in the computer

French
I have to write the sentence "You (plural) need to make up your own mind" in french using "il faut que" and "prendre tes propres decisions." Would the result be "Il faut que vous prenniez tes propres decisions"?

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