Questions Asked on
June 12, 2010

Physics
A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the drive steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. a) What is the magnitude of the force of the car on the truck? b) what is the
asked by Sarah 
chemistry
write the overall, balanced molecular equation and indicate which element is oxidized and which id reduced for the following reactions. Include phase abbreviations. a) Mg(s)+Cr(C2H3O2)3(aq)>? b) Cd(s)+AgNO3(ag)>?
asked by amanda 
Chemistry
When heated, lithium reacts with nitrogen to form lithium nitride: 6Li+N2 > 2Li3N What is the theoretical yield of Li3N in grams when 12.4 g of Li is heated with 33.9g of N2
asked by Jerry 
chemestry
suppose two gases in a container have a total pressure of 1.20 atm.What is the pressure of gas B if the partical pressure of gas Ais 0.75 atm?
asked by denise 
Chemistry
What volume of 0.123 M AgNO3(aq) is needed to form 0.657 g of AgCl(s)? 0.564 mL. 18.6 mL. 37.2 mL. 1.77 L.
asked by Kelly 
Geometry Check
Which set of points are collinear? a.)A(1,5); B(2,6); C(4,7) b.)A(0,0); B(1/2,3); C(1,5) c.)A(4,2); B(0,4); C(2,5) when i graph them they all look straight to me but the one I pick is A(1,5); B(2,6); C(4,7)
asked by Ariel 
Geometry HELP
Which set of points are collinear? a.)A(1,5); B(2,6); C(4,7) b.)A(0,0); B(1/2,3); C(1,5) c.)A(4,2); B(0,4); C(2,5)
asked by Ariel 
physics
If the borderline is tau equals zero,the eigen values are?
asked by Alan Zamora 
Algebra
2. A long distance phone company has a monthly fee of $7.95 and charges a rate of $0.05 per minute. Another long distance company has a monthly fee of $9.95 and charges a rate of $0.03 per minute. At how many minutes would the two companies have equal
asked by mysterychicken 
math
if naomi wants to accumulate 1,000,000 by investing money every year into her savings account at 3% for 30 years until retirement,how much does she need to deposit each year
asked by darryl 
electric chem
A voltaic cell is made by placing an iron electrode in a compartment in which the Fe2+ concentration is 2.0 ´ 105 M and by placing a Pt electrode in the other compartment, in which the H+ concentration is 3.4 M and = 1.00 atm.
asked by ibbi 
english parts of speech
choose the sentence that has a subject complement a. the nurse felt my pulse b. i felt much better c. the day ended with many surprises d. we can't leave without seeing her
asked by brenda 
calculus
Let g(x)=cos x1. The maximum value attained by g on the closed interval [0, 2pi] is for x equal to A) 1 B) 0 C) pi/2 D) 2 E) pi I think its pi/2 but I'm not sure at all.
asked by =) 
College Physics
A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 6.3 m/s2; after 3.6 s he enters the main speedway. At the same instant, another car on the speedway and
asked by Anonymous 
chemistry
A flask containing 5.00mL of 3 M HCl solution requires 14.45mL of 1.00 M NaOH for titration. How many moles of HCl are present in the solution? The density of 3 M HCl is 1.05g/mL
asked by John 
physics
A small toy car is moving around a circular path once in every 8 sec. The radius of track is 3m. find speed of car.
asked by Anonymous 
Algebra
Need help with these please 2. A long distance phone company has a monthly fee of $7.95 and charges a rate of $0.05 per minute. Another long distance company has a monthly fee of $9.95 and charges a rate of $0.03 per minute. At how many minutes would
asked by mysterychicken 
French
I'm in grade 9, and my oral exam is coming up on monday. One of the possible questions involves knowing the plot of the textbook 'Sans frontieres 9e' that I had to return already. Specifically 'Selon toi, qui a commis le crime a\Logiclique? Pourquoi?'
asked by Matthew 
Chemistry
How much energy (in kilojoules) is released when 26.5g of ethanol vapor at 86.0C is cooled to 12.0C? Ethanol has mp = 114.5C , bp = 78.4C, delta H vap = 38.56 (KJ/mol) and delta H fus = 4.60 (KJ/mol) . The molar heat capacity is 113J/(K.mol) for the
asked by Deborah 
Geometry HELP
1.)In the figure above, PQRS is an inscribed quadrilateral, and the measure of arc RSP=206º. What is mâˆ PST? a.)103º b.)206º c.)360º
asked by Ariel 
Algebra
Solve. The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke^0.12t where k is a constant and t is the time in years. If the current population is 15,000, in how many years is the
asked by Sambo. 
chemistry
Write an equilibrium constant expression for the chemical reaction of ammonia with water. (In this reaction assume that the concentration of water will remain constant)
asked by Locke 
Physics
What is the tension in the rope of this figure description? 60 kg person is hanging in the air on a rope attached to a pulley, with a 100 kg mass attached on other end that is touching the ground.
asked by Sarah 
Art and Culture: Hellensitic Greece
What is the purpose of the Altar of Zeus in Pergamum? Who is responsible for paying for or commissioning the piece? How was it made? What is the meaning of this piece and what does it express or reveal about its creator? What aspects of the Hellenistic
asked by Hannah 
geometry
In triangle abc, point B is on segment ab, and point E is on segment bc such that segment de is parallel to segment ac if db=2, da=7, de=3, what is the length of segment ac?
asked by jenny 
chemistry
This is a confusing one! How many faradays are required to convert a mole of NO2 ions to NH4+ ions? a. 4 b. 5 c. 6 d. 7 e. 8
asked by ill matic 
Business research
You conduct a survey of a sample of 25 members of this yearï¿½s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this
asked by Shari 
chemistry
an organic sbstance has an enthalpy of vaporization of 29.0 kl/mol. the compound has a vapor pressure of524 mm HG at 25 C. at what tempurture is the vapor pressure equal to 115mm HG?
asked by nancy 
chemistry
Data obtained from lab (neutralization): H2SO4: C =1.0mol/l V = 30 mL Initial temp. = 24.1 NaOH c= 1.0mol/L v= 50 mL initial temp. = 23.9 Final temp. of H2SO4 & NaOH = 32.9 Assume specific heat capacity of both these substance is equal to water's = 4.19
asked by Jenna 
Math
A television manufacturer makes console and widescreen televisions. The profit per unit is $125 for the console televisions and $200 for the widescreen televisions. Write the objective function that describes the total monthly profit. Write a system of
asked by Bob 
English
How do i write a thesis statement about greed for the novel The Lion, The Witch and The Wardrobe?
asked by Cheryl 
Geometry Help
1.) An isosceles triangle Î”ABC has its altitude at the yaxis and its base at the xaxis. D is the midpoint of segment AC and E is the midpoint of segment CB. Given the coordinates A(2a, 0), B(2a, 0), and C(0, 2b), determine the coordinates of
asked by Ariel 
CIS 105
As you have discovered, there are a variety of computers available, from the smallest computer in a domestic device to the supercomputers used in industry. Despite the different uses of computers, they all have basics elements in common—each computer
asked by Sunny 
Physics
Two blocks of masses M and 5M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them, as seen in the figure below:
asked by Brian 
Medical Terminology
You are a front office medical assistant. A second front office medical assistant is going to be hired, and you have been asked by the office manager to help her screen job applicants for the position. The office manager asks you to put together a short
asked by Danielle 
statistics
A canidatate for governor of a certain state claims to be favored by at least half of the voters. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis? A. There is not sufficient evidence to reject the
asked by Steven 
Chemistry
The [H3O+] of a solution with pH = 3 is 10 M. 10 M. 1 x 103 M. 1 x 103 M. 1 x 1011 M. Identify the acid(s) and base(s) in the following reaction: CH3COOH(aq) + NH3(aq) CH 3COO(aq) + NH4+(aq) CH3COOH is the only acid, and NH3 is the only base. CH3COOH
asked by amanda 
chemistry
A sample of argon gas occupies a volume of 950 mL at 25.0°C. What volume will the gas occupy at 50.0°C if the pressure remains constant?
asked by lara 
Algebra
Need help with these 30. Suppose the area of a square is x^2  6x + 9. What is the perimeter of the square? 33. Factor the expression: k^2 + k^f  2f^2 38. Find the final amount of an investment if $2,000 is invested at an interest rate of 8% compounded
asked by mysterychicken 
Algebra
Solve. How long will it take for the population of a certain country to double if its annual growth rate is 1.5%? Round to the nearest year. Use the exponential growth model P(t) = P0e^kt.
asked by Patty T. 
managerial accounting
Accounting homework Gladmark company produces two types of get well cards scented and regular drivers for the four activities as follows: Scented Regular Inspection hours 40 160 Set up hours 50 50 Machine hours 200 600 Number of moves 225 75 1. Calculate
asked by Cris 
chemistry
A beaker contains 50.0 mL pf 0.953 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?
asked by Monica 
Chemistry
A beaker contains 50.0 mL of 0.952 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?
asked by Monica 
Business Statistics HELP!!!!
According to the National Association of Homebuilders, the average life expectancies of a dishwasher and a garbage disposal are about the same:10 years. Assume that their finding was basedon a sample of n1=60 dishwashers and n2 = 40 garbage disposals, and
asked by Julia Brown 
algebra
The length of a rectangle is 1 cm longer than its width. If the diagonal of the rectangle is 5 cm, what are the dimensions of the rectangle in centimeters? Enter your answers in the blanks. Enter only the numeric values rounded to the nearest tenth.
asked by Anonymous 
Geometry Help
Out of 60 review questions I struggled with these ones. Someone please help!! 1.) The length of one side of a regular polygon is half the length of a similar polygon. What is the ratio of their areas? a.)1/2 b.)1/4 c.)1 2.)A patchwork quilt is made up of
asked by Ariel 
Math
function y = 42(2t+pi/2), where t is measured in radians. A.choose one option which gives the value of the function when t=pi radians B.choose one option which gives the period of the function in radians. a)0 b)1 c)2 d)4 e)pi/4 f)pi/2 g)pi h)2pi
asked by Dave 
Math
Choose the three true statements from the following. Options A) The period of y =cosx is 90◦. B) The period of y =sinx is ð radians. C) The period of y =sin(2x) is four times the period of y =sinx. D) The period of y =sin(2x) is half of the period of y
asked by Smith Rai 
science
4. Assignment: Photosynthesis and Cellular Respiration Powerpoint Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, singlecelled or multicellular, the exchange of energy and the formation of products
asked by barb 
accounting
I need help wit Acc/225 week 2 and the exercise is 25 I have to do a Taccount and Trial balance for Pose Pics and it is really confusing me
asked by Cheri 
Geometry HELP
A soccer ball has diameter of 400 mm. A pin is stuck into the ball such that it creates the chord AC, which is 20 mm. What is the distance from the chord formed by the pin, and what is the length of EB? (Hint: CD=radius) a.)0.125 mm b.)0.5 mm c.)0.25 mm
asked by Ariel 
Physics
The velocity of an object in simple harmonic motion is given by v(t)= (0.275 m/s)sin(23.0t + 2.00π), where t is in seconds. 1) What is the first time after t=0.00 s at which the velocity is 0.100 m/s? 2) What is the object's position at that time? I
asked by Brian 
Algebra
Please help...Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. y=log7 x
asked by J. Ed 
Algebra
Is this correct? Rewrite as an equivalent exponential equation. Do not solve. log[8](64)=2 Answer= 8^2=64
asked by Amy Zieg 
English 10 HELP
out of 50 review questions I'm struggling with these. Someone please check/correct my answers! Look at the following pairs of sentences. Identify whether or not they are simple time relationships or causeandeffect relationships. 1.)Clark was hammering a
asked by Ariel 
psy 230
what influence does culture have on personality?
asked by lisa smith 
writing
i need some help with editing
asked by Jasmine 
algebra
how do you solve 3xy=5 and =6x+2y=1 by substitution
asked by Anonymous 
chemistry
what is the basicity of H2S03
asked by ayo 
Sci
I want to do a science project like i am going to show two different ecosystem and predict and show which one is more polluted and what happens during global warming???? What my hypothesis going to be then??? Also.... What Future Refrences do I need To Get
asked by Alisha 
Math
Using 3.14 for pi, rounding to the nearest tenth, if necessary. A spherical storage tank has a diameter of 48 ft and is full of water. How many delivery trucks with cylindrical tanks measuring 8 ft in diameter and 10 ft long can be completly filled from
asked by Bob 
Math
Choose the four true statements from the following. Options for Question 5 A )Two boxplots plotted ona commonaxis would be a good way of comparing the journey times for weekdays and weekends. B )Boxplots would show that the weekend times are more widely
asked by Sutina 
Human Services
This is late can somebody look at my answers and tell me if they are correct? I have to choose one of the following: A. bandwagon—the idea that “everybody” does this or believes this B. categorical statements—stating something in a way that implies
asked by Ally 
Math
Objective Function z = 3x  2y Constraints x > or equal to 1 x < or equal to 5 y > or equal to 2 x  y > or equal to 2
asked by Bob 
health
when would a Midsagittal plane be used. i know it is, but what type of xray would be taken
asked by Tonni 
English
I have to have 5 sentences with different verb tenses, stating The role of education in successful finanical planning.
asked by Christine 
Intro to Finance
compare and contrast long and shortterm financing. Describe situations in which each type of financing would be used.
asked by Kim 
more math
1.) If c=12âˆš3 cm, then a=___ and b=___. 2.) A refrigerator has a width of 3 feet. The angle of elevation from the bottom corner to the opposite corner is 65º. What is the height of the refrigerator? 3.) In a 306090 triangle, the shorter leg has
asked by Unknown 
Geo (locus)
I don't fully get this stuff but some of these I guessed on and some I think I;m close so will someone check/ help me please? * is the answer I put 1. Point A is 0.5 cm from j. k and k are parallel and 1 cm apart. Find the locus of points that are 0.75 cm
asked by matt 
Geometry HELP
In a rhombus, one diagonal has a length of 10 cm and the area is 120 cm2. Find the length of one side. a.)10cm b.)12cm c.)13cm
asked by Ariel 
Math
: PROGRAM: PYTHAG : Prompt A, B :Fix 2 ã : (A2 +B2) ¨ C :Disp "C=",C : Float Choose the three true options concerning this program. Options A) The program can be used to find the length of the hypotenuse of a rightangled triangle. B) The program can
asked by Dave 
Math
Choose the one option which gives the length (in m, correct to 1 decimal place) of the diagonal of a rectangular field with sides 55m and 72m long. Options A 11.3 B 63.9 C 82.1 D 90.6 E 96.0 F 127.0
asked by Smith Rai 
math
x^4+2x^2yx^2+3y^2
asked by kamrul 
Latin
When was "De rei publica" written? And what does each of the books describe?
asked by Diane 
geometry
. Graph the following functions. • y = 2x – 1 • y = (–3/4)x + 5 • y = x2 – 4 • y = –3x2 – 6x – 5
asked by Anonymous 
statistics
10 soldiers of 500 attempt to climb a 100Ft cliff, they fail in : 57 ft, 73, 81, 78,63,85,41,68,75,88. What is probability of soldiers successfully climbing the cliff?
asked by david 
Maths
Express the sum using summation notation: 1  1/2 + 1/3  1/4 + 1/5  ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((1)^(k+1)) / k I'd be able to figure out the term
asked by Please Help 
algebra
The equation C=mx+b can be used to model the monthly cost, C, of a cell phone plan where b is the flat monthly cost, m represents the cost in dollars per minute and x is the number of minutes used in the month. Choose a flat monthly rate and cost per
asked by Please help 
Soccer
Yeeeeeha! The US tied Great Britian!!!! And that's the answer!
asked by GuruBlue 
Grade 8 Vocab
I am having a vocab quiz soon and I need to know the meaning of the following! Thanks for all the help!  poignant  adversity  quaver  wanton  cacophony  narcissism PS: Please don't give me the link to dictionary sites, I've already tried that and I
asked by Maddison 
Algebra
Is this answer correct? Express as a single logarithm: log[2](6)+log[2](13) Answer= log[2](78)
asked by Amy Zieg 
math
A tractor manufacturing company machines axles to extremely small tolerances. The main power axles have a mean diameter of 3.0000 inches and a standard deviation of 0.0050 inch. What is the probability that a given axle will have a diameter between 2.9915
asked by Wendy 
math
Suppose that the U.S. Senate consisted of 60 Republican and 40 Democratic senators. How many different 10person committees could be formed with 6 Republican senators and 4 Democratic senators?.
asked by Wendy 
Algebra
Is this correct? Express as a single logarithm. log[x](14)log[x](2) Answer= log[x](12)
asked by Amy Zieg 
CUltural Diversity
Native Americans who are employed are less likely to be managers, professionals, technicians, salespeople or administrators. is this true or false?
asked by Jamie 
Intermediate Algebra
Express as an equivalent expression, using the individual logarithms of w, x, y, and z. log(a)(1x^2y^5)
asked by Amanda 
Algebra
20. Solve: 5x^2  10x = 0 50. (x1)(x^3 + x^2 + x) =? Thanks MC
asked by mysterychicken 
geometry
angle equals a half arc sine of gravity over velocity squared equals?
asked by Alan Zamora 
Physics
The hamiltonian shows you that the energy levels are purtered by the electric fields.The form of the matrix,you can see?
asked by Alan Zamora 
PHY
Steps of the scientific method
asked by Anonymous 
albebra
I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= 3, b) x=1, c) x=5, d) x=1 It asks me to find the value of x when y is 5; however, the graph I have has a line (0,2) on the y axis and on the x axis
asked by bart 
Algebra
50. (x1)(x^3 + x^2 + x) =? Thanks MC
asked by mysterychicken 
gegraphy
the native people originally come from? the name of the ethnic ground that settles in the praires? the porcess that formed the rocky mountains and appalachians? the most valuable catch in the pacific? the most eastern and western physiographic region? the
asked by Ted 
Math
I have no clue what this means. Can someone explain this to me. Evaluate t^1
asked by Becky 
math
1.) What is the square of âˆš10? 2.) Find tan 14. 3.) Find cos 45. some one told me to use a scientific calculator and it would give me the answer but i can't find my calc.
asked by Unknown 
Algebra HELP:(
I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= 3, b) x=1, c) x=5, d) x=1 It asks me to find the value of x when y=5
asked by bart 
English
why did the Virginia Woolf had such a revolutionary impact on so many writers?
asked by Isaiah 
Math
What is the simplified sum when you evaluate 10/15 + 1/4
asked by Nolan 
Math
Calculate the average mathematical gradient of a slope that rises 450m over a horizontal distance of 1.8 km.
asked by Sutina 
Geography
Do you know an example where secondary effects of lithospheric hazards are more serious than the hazard itself?
asked by Jazzie 
math
1.) Write the equation for the line in slopeintercept form:Slope: m=3; Yintercept: B=7 *y  3 = 7(x  3) *y = 3x + 7 *y = 7x  3 2.)Write the equation for the line in slopeintercept form: Slope: m=4/3; Yintercept: b=2 *y = 4/3x  2 *y + x = 2x + 1/2
asked by matt 
chemistry
What is the molecular mass of aspirin?
asked by judith