Questions Asked on
September 3, 2009

Physics
The speed limit in a school zone is 40 km/h. A driver traveling at this speed sees a child run into the road 23 m ahead of hs car. He applies the brakes, and the car decelerates at a uniform rate of 8.0m/s^2. if the driver's reaction time is .25s, will the
asked by Anonymous 
Physics
A 20.0 kg box rests on a table. what is the weight of the box and the normal force acting on it? A 10.0 kg box is set on top of the 20.0kg box. Determine the normal force that the table exerts on the 20.0kg box and the normal force that the 20.0kg box
asked by claire 
Chemistry
In gas chromatography, what would be the order of the retention times for your mixture (hexane and toluene)? What is the basis for your answer?
asked by Soojung 
physics
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 7840 N/C. The mass of the water drop is 3.84 109 kg. (a) Is the excess charge on the water drop positive or negative?
asked by amber 
Economics
During a year of operation, a firm collects $450,000 in revenue and spends $100,000 on labor expense, raw materials, rent, and utilities. The firm's owner has provided $750,000 of her own money instead of investing the money and earning a 10% annual rate
asked by John 
physics
A charge Q is located inside a rectangular box. The electric flux through each of the six surfaces of the box is: Ö1 = +1480 N · m2/C, Ö2 = +2240 N · m2/C, Ö3 = +4220 N · m2/C, Ö4 = 1780 N · m2/C, Ö5 = 3550 N · m2/C, and Ö6 = 5250 N · m2/C.
asked by teri 
Chemistry
Spanish mahogany has a density of 53lb/ft^3. What is the approximate weight (in pounds) of a piece of mahogany that measured 10in x 12in x 14in?
asked by Anonymous 
physics
Two identical small insulating balls are suspended by separate 0.23m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.70 104 kg. Initially the balls are uncharged and hang straight down. They are then given identical
asked by teri 
Chemistry
In one second light can travel 2.998x10^8m. How many inches does light travel in one femtosecond?
asked by Anonymous 
physics
Four point charges have the same magnitude of 2.62 1012 C and are fixed to the corners of a square that is 3.80 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the
asked by amber 
Math
What are the 6 parent functions? Describe their graphs.
asked by Herald 
physics
A small spherical insulator of mass 1.90 102 kg and charge +0.600 µC is hung by a thin wire of negligible mass. A charge of −0.900 µC is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle è with the
asked by amber 
Math 117
A bank teller has some fivedollar bills and some twentydollar bills. The teller has 10 more of the twenties. The total value of the money is $850. Find the number of fivedollar bills that the teller has?
asked by Maria 
physics
A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the least constant acceleration needed for takeoff from a 1.80 km runway?
asked by mariah 
English
my son has vocabulary words using in sentences, I don't understand these word and their meanings, please, make a sentences using these words please 1. enthusiastic 2. assure 3. peculiar 4. pastel 5. translation 6. insisted
asked by Ruben S Gagai 
physics
The head of a rattlesnake can accelerate 50 m/s2 in striking a victim. If a car could do as well, how long would it take to reach a speed of 78 km/h from rest?
asked by Nick 
physics B
A block is given n intial speed of 3.0 s^1 m up the 22.0 degree plane (a) How far up the plane will it go? (b) How mcuh time elapses before it returns to its starting point? Assume Mu k = 0.17 for (a) a =  (Mu k g cos theta + g sin theta) I got  5.23
asked by physics B 
Geography
Can someone please check of my answers are correct? 16. Although most of South America lies within the tropical latitudes a. climate and vegetation differ greatly in the region b. cold ocean currents keep the air cool and dry c. there is little tropical
asked by mysterychicken 
math
Solve the system 6x+4y = 12 9x+6y = 18 If the system has infinitely many solutions, express your answer in the form x=x and y as a function of x x=? y=?
asked by Jillian 
physics
An object falls from height h from rest and travels 0.45h in the last 1.00 s. (a) Find the time of its fall. (b) Find the height of its fall. I've tried multiple times but I cannot get the correct answer.
asked by Ryan 
Physics
(a) If the maximum acceleration that is tolerable for passengers in a subway train is 1.52 m/s2 and subway stations are located 1030 m apart, what is the maximum speed a subway train can attain between stations? b)what is the travel time between stations?
asked by Nick 
Physics
An electric vehicle starts from rest and accelerates at a rate of 3.0 m/s2 in a straight line until it reaches a speed of 26 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. a)How much time elapses from start to stop? b)How far
asked by Nick 
3rd grade science
What is the effect of placing an object with a greater density than water in a bucket of water?
asked by Melissa Corona 
algebra 1
Blue prints allow an area of 20,000 square feet for the playground. the width of the rectangular playground is 80 feet less than its length and its perimeter is 640 freet. what is the length of the playground?
asked by casey 
Physics
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 220 m. If the red car has a constant velocity of +20 km/h,
asked by Henry 
Physics
A bullet traveiling horizontally at aspeed of 350 m/!@#$%^&s a board perpendicular to the surface, passes through it, and emerges on the side at a speed of 210m/s. if the board is 4.oo cm thick, how long does the bullet take to pass through it?
asked by Anonymous 
math
3x+2y = 0 x2y = 0 If the system has infinitely many solutions, express your answer in the form x=x and y as a function of x Your answer is x=? y=?
asked by Jillian 
math
Find the representation of the number 256 in the following bases: a. base six b. base twelve c. base two I get how to write the number of objects as a base(whatever), but I think this is asking me to start from the end number and work backwards. I really
asked by Lauren 
english
In light of 9/11, do you think Americans should trade off some of their civil liberties? Do you think that the right of free speech can or should be traded off to reduce violence in America? What is free speech? What is symbolic speech? Can you yell
asked by monica 
Science (Physics)
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 220 m. If the red car has a constant velocity of +20 km/h,
asked by Jeff 
Literature
Contrasting "The Road Not Taken" and "Stoppinb by Woods on a Snowy Evening"....help
asked by Anonymous 
Science
1.Bacteria that live where most other organisms cannot live belong to the kingdom____________. a)Eubacteria b)Archaebacteria 2.Algae and ameba belong to the____________kingdom. a)plant b)protist I forgot my Science book in school and need help with last
asked by Mirandha 
math
how do I solve this limit (> is an arrow meaning "heading towards" lim x> 2 (x6)^(2/3)
asked by cara 
English
1. It's late. You had better go to bed now. (In #1, what does 'It' refer to? Does it refer to 'The time'?) 2. Choose the things which you want to give advice to your partner about, and talk with your partner. 3. When you give advice to the other person,
asked by John 
MATH
FACTOR THE EXPRESSION COMPLETELY 9x^3 + 36x^2  x  4
asked by AJ 
physics
what is the equal and opposite force the force of friction like if a block is at rest on a table static friction is stil exerted by the table onto the block keeping it from moving what is the equal and opposite force of this force?
asked by physics 
10th grade
How many unit volume cubes of 1cm squared will fit into a 3cm x 4cmx 10cm shape?
asked by Nicole 
psychology
when a child repeats a behavior or action simply to observe that action you would not infer that. the child finds the behavior self reinforcing. b. the stimulation of the action is satisfying. c.the stimulation provided by the action is associated with a
asked by janet 
physics
A small plastic ball with a mass of 7.00 103 kg and with a charge of +0.162 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0°
asked by amber 
English
Need some feedback if this works as a summary. Thank you. In “Power of Images: Creating the Myths of Our Time,” J. Francis Davis believes communication by images with its voluminous exposure and alluring advertisements, has overpowered what can be
asked by Marco 
Trig Math
Solve the equation algebraically for x wohere 0
asked by Anonymous 
Elementary Math
The number of days in the month of July 2) A) Constant B) Variable Is it A.
asked by Lisa 
French
"Charles est un grand homme" means "Charles is a great man," whereas "Charles est un homme grand" means "Charles is a tall man," correct? Merci beaucoup!
asked by RC 
5th grade
name each number in two different ways 90,000,000 40,000
asked by tre 
science
an experiment where only one variable is changed and all others are kept constant down
asked by shakayla 
physics
A small plastic ball with a mass of 7.00 103 kg and with a charge of +0.162 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0°
asked by teri 
6th grade
help me get the answer that = 2 but you haave toput the right signs so it gets that number here are the numbers 17 25 30 3
asked by melanie 
Precalculus
Write the simplest polynomial equation with real coefficients having roots i and 4. I have noooooo idea how to even start this one :( I thought you could start backwards with synthetic substitution but it didn't work. Any help on this is greatly
asked by Emily 
Math
A cylinder has a diameter of 6 ft and a height of 3 ft. Find its surface area and volume.
asked by Karen 
music
test 00761500
asked by music 
writing sentences and paragaphs
prewrite about your field of study and create specefic job for which might want to apply at particular business
asked by saral 
Math
Factorize completely 2y squared 11y +15
asked by Carese 
literature
Just as My Àntonia’s setting is initially raw and featureless, its narrative at first seems haphazard: “I didn’t arrange or rearrange. I simply wrote down what of herself and myself and other people’s, Antonia’s name recalls to me. I suppose it
asked by jenny 
Solving Inequalities?
Ive been having problems with this soo... My first problem is this: Solve 2x4(x+2)6 < 0 Can someone help me stepbystep figure this out so i can at least finish the ones that are similiar to this one? Thankies
asked by Chrissy 
physical science
I must divide a blockletter shaped L diagram of a piece of land into four lots that are the same size and shape. The perimeter has one number next to each of the 6 sides. The numbers are (clockwise, beginning at the top) 1, 1, 1, 1, 2, 2. Can you help me
asked by dom 
Literature
Can someone please check if my answers are correct? 5. Which of the following statements about Mrs. Jones from "Thank you Ma'am" is true? a. She is able to forgive Roger b. She wants Roger to be her son c. She thinks Roger should earn money for shoes d.
asked by mysterychicken 
college math
Give the equation of the line that is perpendicular to the line y = x + 4 and passes through point (0,1). A) y = x  1 B) y = x + 1 C) y = x + 1 D) y = x  1 So if passes through point o,1 does that mean that the answer has to be negative? Answer A
asked by Ms. Betty 
English
1. A person is drifting on a deserted island. Change this person's thoughts into other words and say them to your friend. 2. The following are about some conditions. Fill in the blanks, and then say as in the example. 3. Think of your life habits which you
asked by John 
Geometry
Find the slope of the line through the given points(4, 8) and (5, 8) A)16/9 B)0 C)16 D) No slope b
asked by Emory 
accounting help
IN 2008, Variman, Incorportated had Gross Accounts receivable of $2,366,420 and management estimated the Allowance for Doubtful accounts to be $243,520. Compute the ratio of Allowance of Doubtful accounts to Net Accounts receivable for Variman, Inc. for
asked by tiff 
World History
What did the Egyptians use to stuff the nostrils during The Mummification Process?
asked by Corene 
math
Ok. So I have a game board with my homework and the numbers are 1,2,3,4,5,6,7,8,9,10,12,14,15,16,18,20,21,24,25,27,28,30,32,35,36,40,42,45,48,49,54,56,63,64,72, and 81. And the uestion is List 5 multiples of 3 that are not on the game board. Can you help.
asked by Peyton 
math
can someone please explain this problem? (> is an arrow) assume that limit x> 4 f(x)=0 and limit x> 4 g(x)=3 1. limit x> 4 (g(x)+3
asked by alice 
History
What are some good/interesting research paper topics that can be from 14921865.Any ideas would be very well appreciated.
asked by Liz 
algrebra
8x+11x=114
asked by barbara 
US History
I was looking up the definition for pilgrim and all I found were things saying: a pilgramage for religious reasons. I want the correct definition for a 1600 pilgrim. Would "those who settled in Plymouth, New England" be correct?
asked by Mimi 
Science
What is the effect of placing an object with a greater density than water in a bucket of water?
asked by Melissa Corona 
Algebra
When solving a rational equation, why is it necessary to perform a check?
asked by Denay 
English
1. I don't like to eat junk food. (Is 'junk' waste? What kinds of food are junk food? Would you name them, please?) 2. He is famous for poetry. 3. He is wellknown for kindness. 4. He is noted for wealthy. 5. He is notorious for cruelty. (Are they all
asked by John 
Reading: Summary
Can you help me summarize this article in 2 paragraphs? Ny times website ome mans trash please can you search it and help?
asked by Mark 
physical science
I was given a diagram in the shape of an "L"looks like a block letter Laround the perimeter are the numbers 2, 1, 1, 1, 1, and 2. It says divide this diagram of a piece of land into four lots that are the same size and shape. I have been trying since
asked by dom 
Math
Solve the equation algebraically for x where 0
asked by Anonymous 
4th grade
math..need to find out how to write an array for homework
asked by moni 
English
1. This is a piece of cloth or other material, which you wear over your face. (Is this one correct? Is 'other material' correct?) 2. If I catch some fish, I won't be hungry. 22. If I catch any fish, I won't be hungry. (Which one is correct, some or any?
asked by John 
algebraaaa
A baker needs between 40lb and 50 lb of a sugar mixture that contains ten times as much flour as sugar. what are the possible weights of flour the baker can use
asked by Jared 
college: social work
Please help me come up with an operational concept definition for class participation, and then develop a "group" definition via consensus decision. Response needed in 24 hours. Thanks.
asked by Butterfly 
English
1. I am late for school from time to time. I will come to school earlier. I will come to school on time. 2. I don't exercise regularly. I will take exercise regularly. I will exercise at times. 3. I don't help Mother clean the house. I will help her clean
asked by John 
math
s/a=4.5,D/A=4.5, N/E =.80 & A=D+Emsolve for N/S
asked by kori 
French
Could you please check these thanks. Directions: Donnez des réponses personnelles. 1. Tu pars pour l'école à quelle heure le matin? Answer: Je pars pour l'école à sept heure. 2. Tu sors de la maison à quelle heure le matin? Answer: Je sors de la
asked by Lisa 
science
information obtained by the five senses
asked by janae 
health care
How do regulatory issues affect the supply and demand of health care?
asked by april 
math
what is 2+6*(85)=
asked by shakayla 
writing
How do you include songs in a sentence: Punctuation for the following: It seems only yesterday that she was a little girl in pigtails reciting Mary Mary Quite Contrary and sining Ill never forget it The Farmer in the dell in a funny high squeaky baby
asked by paul 
math
what is the decimal place value for 7.81 with 8 being underlined
asked by luis 
English
What is a vivid adjective and please give an example
asked by Fraser 
Math
compare to 1/2 to tell which fraction is greater 8/17 , 13/23
asked by Carolina 
math
what does a line above pq mean
asked by melinda 
World History
What were 4 tatics that the ancient Assyrians used to control their empire? I know one is the battering ram because they used that in battle and so people feared them but I can't think of others... Thanks in advance:)
asked by Nicky 
MATH
Solve the equation algebraically for x where 0
asked by Anonymous 
5th grade
n +37 if n is 16
asked by davonte 
7th grade
waht is used to mix substances, like a spoon, is two words?
asked by daniel 
Math
Find the sum of all n exterior angles of a nsided convex polygon, where n is any positive integer larger than 3. Show all the working details and reasons. I already know that the total is 360 degrees, but how would I use mathematical proof to figure it
asked by Jerry 
science
what are the challenges of manging your chosen terrestial resource issue?
asked by Anonymous 
science
What are the differences and likes of vascular and nonvascular plants
asked by nikolas 
4th grade
round each number to tje place value 195,219
asked by Anonymous 
english
hey i am haveing sooooo much trouble with speech writing iv tried and rewriten it so many times. can u help me write a speech on faceing a big challenge. the challenge i was going to use was singing on stage.
asked by becka 
Geometry
The product of two numbers is 30. One of the numbers is r. What is the other number?
asked by jessica 
geometry
Diagonals of an isoseles trapezoid are perpendicular always,sometimes,or never.
asked by Shannon 
economic
b) What is the estimated number of cans of tennis balls demanded?
asked by Nettie 
SCI/230
Describe biological interrelationships among the life forms in Mana's Wildlife Sancutary in India.
asked by Jessica 
Economucs
Will someone please explain me the selfregulating nature of a marketplace? I read my text but it made me more confused...so please help!!!
asked by Anonymous 
12th grade
what does the narrative of sojoumer truth take place
asked by quizzy 
Earth Science
How many liters in 1000cm squared...I just don't get it?
asked by kim 
socialstudies
what is reading goal mean to you ?
asked by ivana 
Literature
I need to make a fake letter from Roger [in Langston H's short story Thank You Ma'am] and for that I need to create a fake adress. I need help with this; I looked at the setting described but I'm still stuck. Thanks MC
asked by mysterychicken 
Calculus
Using the first of these limits, find f'(3) if f(x)=4x^2+4x2
asked by Z32 
Calculus
Find the average value of the function on the given interval: f(x) = e^x/5, [0,5]
asked by Stacy 
ACCOUNTING CONFUSED!! HELP
Andy Wright,D.D.S., opened a dental practice on January 1, 2008. During the first month of operations the following transactions occurred. 1. Performed services for patients who had dental plan insurance. At January 31, $875 of such services was earned but
asked by Michelle 
math
15/214
asked by Anonymous 
algebra review
find the yintercept of a line that passes through (2,1) and has a slope of 5. i forgot what equation i have to use to find this out. can someone give me which equation i have to use? or all the equations that deal with slopes please
asked by trixie 
science
whats is an organized plan to solve problems
asked by maya 
Materials / Physics
Find the force required to permanently deform (stretch such that it snaps back to >0.2% longer than original length) a .04 m diameter bar if YS = 1000 MPa.
asked by Bob 
science
what is 25 science careers with their definitions
asked by maya 
algebra
i need help with linear equations...HELP
asked by jessie 
Science
Suppose you are testing the boiling temperatures of several liquids. How would you use numbers during your investigation?
asked by Tony 
algebra review!
it says write the equation of the vertical line that passes through the point (7,3). what do i need to start it off? find the equation for the line with undefined slope and passing through the point (1,2). what do i need to start that off? what equation
asked by trixie