Wednesday
June 19, 2013

# Homework Help: Health: First Aid

Recent Homework Questions About First Aid

Chemistry
I conducted a lab in which I had to calculate the number of moles of water heated off from copper sulfate. I first weighed copper sulfide in a beaker to in order to get the amount needed to begin the heating of it. If the beaker was wet at the beginning of the experiment for ...
Monday, October 29, 2012 at 6:33pm

Chemistry
The energies, E, for the first few states of an unknown element are shown here in arbitrary units. n 1 E -11 n 2 E -5 n 3 E -2 n 4 E -1 n ... E ... n infinite E 0 A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each ...
Monday, October 29, 2012 at 6:17pm

Poem Help
Wishing Well by Kate Schmitt The mesh of the blanket tangles and lumps of comforter two-toned flannel and bedspread twist and slip. I haven't slept in a week so i wear my brown hooded sweatshirt with the hoodstrings pulled tight around my face. I picture a wishing well ...
Monday, October 29, 2012 at 1:26pm

Chemistry
You have amisture that is 0.100mol/L in each of the following ions: Cl-, Br-, and I-. (a) Which substance will precipitate first? AgCl, AgBr, AgI? (b)what is the concentration of Ag+ required to start the precipitation of the first substance? ksp (AgCl)= 1.77*10^-10 ksp (AgBr...
Monday, October 29, 2012 at 12:25pm

Math/Algebra
If the first term of a finite geometric sequence is .4 and its ratio is .3 what is the sum of the first 5 terms?
Monday, October 29, 2012 at 11:11am

Calculus
If the line 3x-4y=0 is tangent in the first quadrant to the curve y=x^3+k, then k is a: 1/2 b: 1/4 c: 0 d: -1/8 e: -1/2
Monday, October 29, 2012 at 2:32am

physics
A billiard ball moving at 5.60 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.99 m/s, at an angle of 27.0 with respect to the original line of motion. (Enter the direction with respect to the original line of motion. Include the ...
Sunday, October 28, 2012 at 8:25pm

statistics/probability
A game consists of tossing two coins, first a dime and then a nickel. For each coin which comes up a head you win the value of the coin. For each coin which comes up a tail you get nothing. {HH,HT,TH,TT} - each outcome with probability .25 - winnings are 15,10,5,0 a) Find the ...
Sunday, October 28, 2012 at 7:49pm

physical
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that slopes upward at a 12° angle with the horizontal. As you face the window ( 0.715 m high, 2.29 m wide) in your compartment, the train is moving ...
Sunday, October 28, 2012 at 5:57pm

English.
In “Do Not Go Gentle into That Good Night,” Dylan Thomas urged his father to resist (1 point) aging. despair. quitting. death. How does Dante feel about the journey he’s about to take with Virgil? (1 point) worse than before he talked with Virgil better now that...
Sunday, October 28, 2012 at 5:13pm

physics-mechanics-collisions,momentum, impulse
You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such ...
Sunday, October 28, 2012 at 5:34am

physics-mechanics-collisions,momentum, impulse
You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such ...
Sunday, October 28, 2012 at 5:29am

Math
Let f(x) be the parabola -x^2+16x-16. find the point (x,y) on f such that tangent line to f at (x,y) passes through the origin. My ans is (8,48). First i do f'x then i find x and lastly i find y. I do this because the max/min point is the point where tangent line pass ...
Sunday, October 28, 2012 at 4:13am

algebra
Two pumps can fill a water tank in 256 minutes when working together. Alone, the second pump takes times as long as the first to fill the tank. How many minutes would it take the first pump to fill the tank?
Sunday, October 28, 2012 at 12:51am

stat
AluminiCorp is a major producer of aluminum cans that produces 40 billion aluminum cans every year. You work as a quality control officer for AluminiCorp, and are responsible for ensuring that the aluminum cans produced meet certain specifications. Each can is supposed to ...
Saturday, October 27, 2012 at 9:09pm

math problem
Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container originally have?
Saturday, October 27, 2012 at 2:23pm

Math
1)one number is four more than a second number. Twice the second is three more than the first. Find the numbers. 2)four times one number minus a second is 11, and the sum of the numbers is 14. Find the numbers.
Saturday, October 27, 2012 at 1:58pm

financial accounting
The lake theater opened on april 1.all facilities were completed on march 31. During april,the following events and transactions occured. Apr.2 paid film rental of \$800 on first movie. 3 ordered two additional films at \$1,000 each. 10 made \$2,000 payment on mortgage and \$1,000...
Saturday, October 27, 2012 at 2:32am

math
The first of two films lasted 9 minutes less than twice as long as the second. The combined length of the two films plus a 5-minute break between them was 260 minutes. How lon was the film I dont know how to set it up the words confuse me Help?
Friday, October 26, 2012 at 10:28pm

Chemistry/stoichiometry
For the reaction shown, calculate how many moles of NO2 form when each amount of reactant completely reacts. 2N2O5g = 4NO2g+O2g I am assuming that the first question must be converted to grams and the second question must be converted to kilograms I just need to know how to ...
Friday, October 26, 2012 at 8:52pm

C programming
Please name your submission of this problem as b.1.c (20 pts) and b.2.c (20 pts) You are the official score keeper for the "C" Bowling Association (CBA). You should write a program that will:  a. Input date of game (three integers yyyy/mm/dd).  b. ...
Friday, October 26, 2012 at 6:49pm

Int. Macro
Can some just point into the right direction on how to solve this? 1. Suppose you live four periods and earn income of \$30,000, \$60,000, and \$90,000 in the first three periods, and then retire in the fourth period. Assume the interest rate is 0. a. Suppose you want to consume ...
Friday, October 26, 2012 at 4:04pm

physics
If a 100 kg adult sits on a first class lever 2 meters away from the axis of rotation...how far back do I need to sit (145 lbs) to balance the lever?
Friday, October 26, 2012 at 2:22pm

Health: Help for Mental and Emotional Disorders
I really need help with this! I don't have a textbook, but I have an online book, but my computer won't open it. My teacher is not answering his phone. So I have no idea what the answers might be. Please help me! 1. A disorder in which intense anxiety or fear keeps a ...
Friday, October 26, 2012 at 1:53pm

Help physics
The figure below shows an overhead view of three horizontal forces acting on a cargo canister that was initially stationary but that now moves across a frictionless floor. The force magnitudes are F1 = 2.00 N, F2 = 3.00 N, and F3 = 13.00 N. What is the net work done on the ...
Friday, October 26, 2012 at 9:45am

accounts
on july 01,2000, asok ltd. purchased a machine for Rs.1,08,000 and spent Rs.12000 on its installation.At the time of purchase it was estimated that the effective commercial life of the machine will be 12 years and after 12 years its salvage value will be Rs.12,000.prepare ...
Friday, October 26, 2012 at 7:20am

mechanics
The figure below shows an overhead view of three horizontal forces acting on a cargo canister that was initially stationary but that now moves across a frictionless floor. The force magnitudes are F1 = 2.00 N, F2 = 3.00 N, and F3 = 13.00 N. What is the net work done on the ...
Friday, October 26, 2012 at 3:13am

Physics help
You are pushing three equal boxes, 8kg each, with a force of 250 on the first. What is the magnitude of the force of the first box on the second box? _________N What is the magnitude of the force of the third box on the second? _________N
Friday, October 26, 2012 at 2:44am

Physics help
You are pushing three equal boxes, 8kg each, with a force of 250 on the first. What is the magnitude of the force of the first box on the second box? _________N What is the magnitude of the force of the third box on the second? _________N
Friday, October 26, 2012 at 2:38am

Physics help
You are pushing three equal boxes, 8kg each, with a force of 250 on the first. What is the magnitude of the force of the first box on the second box? _________N What is the magnitude of the force of the third box on the second? _________N
Friday, October 26, 2012 at 2:29am

Physics help
A 5 kg block is pulled from rest along a horizontal surface by a rope with a force of 12 N. It experiences a constant frictional force of 1 N. How far has the block moved in the first six seconds?
Friday, October 26, 2012 at 2:23am

Physics
You are riding a merry-go-round on the rim which is turning counterclockwise at a constant angular speed of 0.5 rad/s.Â  Your dog sees you at the 12 o'clock position when he is at the 3 o'clock position.Â  He starts running counterclockwise from ...
Friday, October 26, 2012 at 2:03am

physics
Two steam locomotives are approaching each other, each at 30 mi/hr, heading for a sure head-on collision. A rhinoceros beetle, who flies with a constant speed of 35 mi/hr, leaves the front of the first locomotive when the engines are just 2.000 miles apart, and flies to the ...
Thursday, October 25, 2012 at 9:56pm

Physics
Hockey puck A initially travels atÂ  v(initial) = 6.2 m/s in the horizontal direction (East) on a smooth horizontal ice before striking hockey puck B which is initially at rest, off-center.Â  After the collision, A is deflected at Î¸ =Â&...
Thursday, October 25, 2012 at 8:18pm

math
Using the numbers 1 through 9 with no repeats, find a 9 number such that: the first digit is divisible by 1, the first two digits are divisible by 2, the first 3 digits are divisible by 3, and so on until we get to a 9 digit number divisible by 9. You might try, for example, ...
Thursday, October 25, 2012 at 4:38pm

History
Which West African kingdom was the first to benefit from the gold and salt trade? Ghana Songhai Mali Morocco My answer is Ghana.
Thursday, October 25, 2012 at 2:12pm

Physics (Science)
Hi, For my physics class, we have to design our own experiments to calculate the amount of power exerted for each situation. However, I'm really unsure of how to go about finding the power for the situations. The first situation is doing a push-up, and the second is ...
Thursday, October 25, 2012 at 5:34am

where did the water on the outside of a glass come from
Wednesday, October 24, 2012 at 9:23pm

Math
A board, 32 cm long is cut into three pieces such that the second piece is twice as long as the first and the third is 7 cm longer than the second. Find the length of the shortest piece.
Wednesday, October 24, 2012 at 9:08pm

Chemistry
a certain first order decomposition reaction has a half-life of 15.0 minutes. What is the rate constant for this reaction? what is the time it will take for the reaction to reach the 10% completion point?
Wednesday, October 24, 2012 at 9:02pm

Algrbra
A certain paperback sells for \$12. The author is paid royalties of 11% on the first 10,000 copies sold, 12.5% on the next 5000 copies, and 18% on any additional copies. Find a piecewise-defined function R that specifies the total royalties if x copies are sold. Please help me ...
Wednesday, October 24, 2012 at 3:15pm

Algebra 1
A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week?
Wednesday, October 24, 2012 at 2:17pm

Maths
Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if he received 10 cards...
Wednesday, October 24, 2012 at 4:35am

Geometry
Below is a worksheet I have to do for my geometry class. I am not sure about the answers I have given and I have no clue about the ones not answered. Any help will be much appreciated and thank you in advance. A. Determine the number of triangulations for a hexagon. 5 B. How ...
Wednesday, October 24, 2012 at 2:24am

Physics
How do I find the instantaneous acceleration of the earth orbiting the sun? Everything I am trying is incorrect. I am using 1 second as my time and get 1.99E-7 rads/second. First I tried: acceleration = theta x t / radius Where: theta = 1.99E-7 rads radius = 6.371E6 Then I ...
Tuesday, October 23, 2012 at 11:35pm

English
Write subject and verb. Where was the first automobile race held?
Tuesday, October 23, 2012 at 8:34pm

Science Fair
Hi, my question is are part 1,2, and 3 different ways you can do the project? There are three parts. Each part should take less than 1 hour. In Part 1, you will stare at a colored object for various amounts of time, then measure how long it takes for the afterimage to ...
Tuesday, October 23, 2012 at 6:21pm

physics
A 83-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.76 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.8 s, and then comes to rest...
Tuesday, October 23, 2012 at 6:16pm

Math
The first- floor apartments in Jenna's building are numbered 100 to 110. How many apartments on that floor are a prime number? What are those apartment numbers?
Tuesday, October 23, 2012 at 5:56pm

Physics
Two ice fisherman stand face to face on the ice. They put their hands together, and push away from each other. The first man, who has a mass of 75 kg, accelerates backwards at 3.1 m/s What is the acceleration of the other man, who weigh 637N?
Tuesday, October 23, 2012 at 5:51pm

Math
Cari Bean was on her way to the islands in her yachet. Because of the waves and the currents, she was making irregular progess. The first day she traveled 100 miles. The second day she traversed 120 miles, and the third day only 90 miles. On the fourth day she made 110 miles, ...
Tuesday, October 23, 2012 at 3:37pm

Abnormal Psychology
Though similar in their concerns about eating and gaining weight, individuals with bulimia differ from individuals with anorexia in that they _______, while those with anorexia don’t/aren’t. A. binge and purge B. are within 10% of their normal weight C. use laxatives...
Tuesday, October 23, 2012 at 3:20pm

Physics
For the first part of this question I got 12.12m/s B. With the help of a friend the boy measures the height to which the ball returns and finds it to be 5.2 meters. How fast was the ball moving when it left the ground? I wrote this down mass of ball: 0.40kg height if house: 7....
Tuesday, October 23, 2012 at 1:38pm

Physics
In an experiment conducted using the Young's double-slit apparatus, the separation between the slits is 20 µm. A first-order constructive interference fringe appears at an angle of 2.5o from the zeroth order (central) fringe. A. What wavelength of light is used in ...
Tuesday, October 23, 2012 at 11:46am

Math
Andy has 6 dimes and 10 nickels in his pocket. If he draws two coins without replacing the first coin, what is the probability of drawing a nickel and then a dime? A ¼ B 15/64 C 1/60 D 3/5
Tuesday, October 23, 2012 at 8:45am

college math
Calculate the future value of an ordinary annuity consisting of annual payments of \$1,000 for 4 years if the payments earn 10.70% compounded annually for the first 2 years and 9% compounded annually for the last 2 years. For full marks your answer(s) should be rounded to the ...
Monday, October 22, 2012 at 11:04pm

math
find the first derivative y= 2/5square root2x+1
Monday, October 22, 2012 at 8:06pm

calculus
A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 24 ft/s. a.) At what rate is his distance from second base decreasing when he is halfway to first base? b.) At what is his distance from third base increasing at ...
Monday, October 22, 2012 at 6:56pm

math
A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (2,3). Draw a figure that illustrates the problem. What is the area of the triangle A as a function of the x-intercept of the line?
Monday, October 22, 2012 at 6:16pm

Punctuation
Select the correctly punctuated sentence. A) Dr. Christiaan Barnard, who performed the first heart transplant, is a well-known cardiologist. B) Dr. Christiaan Barnard, who performed the first heart transplant. Is a well-known cardiologist. C) Dr. Christiaan Barnard, who ...
Monday, October 22, 2012 at 2:49pm

Calculus
Im finding local Min and max of x^2/x-2 I know I take the derivative of the first one but how do i derive this one. And the second one especially don't know how to do.
Monday, October 22, 2012 at 1:01pm

Calc
Set the first derivative and second derivative of x^2/x-2 equal to 0. Solve for 0.
Monday, October 22, 2012 at 12:01pm

Algebra
A petroleum company has two different sources of crude oil. The first source provides crude oil that is 35% hydrocarbons, and the second one provides crude oil that is 60% hydrocarbons. In order to obtain 120 gallons of crude oil that is 55% hydrocarbons, how many gallons of ...
Monday, October 22, 2012 at 11:20am

MATHS
how much money would you have after 20 weeks if you were given 5c the first week, 10c the second, 20c the third, 40c the fourth, and so on?
Monday, October 22, 2012 at 3:55am

aig math
Rosa and Marty had the same amount of money.After Rosa spent \$45 and Marty spent \$117, Rosa had 4 times as much money as Marty. How much money did Rosa have at first? I don't know the answer to this one so can you show me how you got your answer and what's your answer?
Sunday, October 21, 2012 at 9:59pm

accounting
In its first month of operations, Danielle Company made three purchases of merchandise in the following sequence: (1) 161 units at \$17, (2) 414 units at \$18, and (3) 115 units at \$19. Assuming there are 271 units on hand, compute the cost of the ending inventory under the FIFO...
Sunday, October 21, 2012 at 8:38pm

cam had 35 more coins than kip. She gave he share to kip who divided all the coins equally into 3 stacks. If each stack has 45 coins,how many coins did cam have at first? My answer is 85, am i right if i am right please show me how you got the answer?
Sunday, October 21, 2012 at 8:29pm

Statistics
The null and alternate hypotheses are: H0: μ1 = μ2 H1: μ1 ≠ μ2 A random sample of 15 items from the first population showed a mean of 50 and a standard deviation of 5. A sample of 12 items for the second population showed a mean of 46 and a standard ...
Sunday, October 21, 2012 at 8:28pm

geography
Can you check my answers please? 1. Which continents do not cross the equator? North America, Europe, Australia, and Antarctica 2. What two parallels form the boundaries of the "tropics" or low latitudes? The 23 degree 50 N line and the 23 degree 50 S line 3. Which ...
Sunday, October 21, 2012 at 7:35pm

Financial accounting
Laird Company sells coffee makers used in business offices. Its beginning inventory of coffee makers was 200 units at \$41 per unit. During the year, Laird made two batch purchases of coffee makers. The first was a 295-unit purchase at \$46 per unit; the second was a 380-unit ...
Sunday, October 21, 2012 at 5:31pm

English
It was two by the village clock, When he came to the bridge in Concord town. He heard the bleating of the flock, And the twitter of birds among the trees, And felt the breath of the morning breeze Blowing over the meadows brown. And one was safe and asleep in his bed Who at ...
Sunday, October 21, 2012 at 4:26pm

Math
A international phone call cost a fixed amount for the first minute and a certain rate per each additional minute. If a 7 minute phone call cost \$10 and a \$4 call cost &6.40, find the fixed charge and the rate per each additional minute.
Sunday, October 21, 2012 at 12:26pm

Math
A coffee dealer mixed 12 pounds of one grade coffee with 10 pounds of another grade of coffee to obtain a blend worth \$54. He then made a second blend worth \$61 by mixing 8 pounds of the first grade with 15 pounds of the second grade. Find the price per pound of each grade.
Sunday, October 21, 2012 at 12:23pm

Chemistry
Please show me how to work! Ethane, C2H6(g) can be made by reaction of hydrogen gas with acetylene, C2H2(g). the standard enthalpies of formation of ethane and acetylene are -84.68 and +226.73 kJ mol-1, respectively. what is the reaction enthalpy for the production of one mole...
Saturday, October 20, 2012 at 10:08pm

math
Suppose a computer virus begins by infecting 8 computers in the first hour it is released. Each hour after that, each newly infected computer causes 8 more computers to become infected. The function y = 8 (exponent x) models this situation. make a table with integer values of ...
Saturday, October 20, 2012 at 6:59pm

english
In “First Confession”, the author adds to the interest of the story by using? European Idioms. common phrases. short, highlighted sentences. Irish dialect.
Saturday, October 20, 2012 at 6:42pm

Math (Trig)
In 1893, the city of Chicago put on a World's Fair to celebrate the 400th anniversary of Columbus' trip to the Americas. The most spectacular at this fair was a huge Ferris Week built by an engineer named George Ferris. This remarkable structure had a diameter of 250 ...
Saturday, October 20, 2012 at 3:57pm

Physics
Consider a plane with a velocity relative to the air of 198 m/s in a westerly direction. If the wind has a speed relative to the ground of 56 m/s (in an easterly direction), how long does it take for the plane to travel from one city to another that is due west of the first by...
Friday, October 19, 2012 at 8:40pm

Math 142
800 hundred chances are sold at \$2 apiece for a raffle. There is a grand prize of \$650 dollars, two second prizes of \$250, and five third prizes of \$50. First calculate the expected value of the lottery. Determine if the lottery is a fair game. If the game is not fair, ...
Friday, October 19, 2012 at 7:09pm

english
In “First Confession”, the author adds to the interest of the story by using? European idioms. common phrases. short, highlighted sentences. Irish dialect.
Friday, October 19, 2012 at 6:37pm

English
Did I do these correctly? Read the following passage and write a brief paragraph that identifies: a) the subject of the passage b) the author's purpose for writing c) the intended audience d) the tone of the piece, and e) the perspective or point of view. Be sure that your...
Friday, October 19, 2012 at 1:43pm

Physics
When a torch is brought 2 times closer, how many times brighter will it appear? 2 4 9 16 At first, I figured the answer would be the obvious (2), but then I second-guessed myself and figured 4
Friday, October 19, 2012 at 12:50pm

Physics
A skier of mass 79.1 kg, starting from rest, slides down a slope at an angle q of 38 with the horizontal. The coefficient of kinetic friction, m, is 0.09. What is the net work (the net gain in kinetic energy) done on the skier in the first 8.9 s of descent?
Friday, October 19, 2012 at 12:36pm

maths
if tn=2n what are the first four terms of thepattern
Friday, October 19, 2012 at 12:25pm

College Math
Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.
Friday, October 19, 2012 at 12:08pm

College Math
Find an equation in slope-intercept form passing through the points (-4.7, 16.3) and (-2.9, 16.3). Hint: first find the slope!
Friday, October 19, 2012 at 12:01pm

English - Writing Sentences and Paragraphs 1
Please help! I have been working on this for two weeks! I have read the book several times. I need to turn this is soon. I took all of your suggestions into consideration and basicallly rewrote the entire paragraph. Please review again... thanks This is the assignment: ...
Friday, October 19, 2012 at 11:51am

College Math
Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.
Friday, October 19, 2012 at 11:40am

chemistry
When nitrogen dioxide (NO2) from car exhaust combines w/ water in the air it forms nitric acid (HNO3), which causes acid rain, and nitrogen monoxide. 3NO2(g)+ H2O(L)----->2HNO3(aq)+ N(g) a.How many molecules of NO2 are needed to react with 0.300 mole H2O? b. how many grams ...
Friday, October 19, 2012 at 11:04am

Accounting
Financial Accounting 1. The following information was made available from the income statement and balance sheet of Meranda Company: ITEM 12/31/2010 12/31/2009 Accounts Receivable \$ 42,000 \$ 45,100 Accounts Payable 27,900 24,500 Merchandise Inventory 68,000 63,000 Sales (2010...
Friday, October 19, 2012 at 9:41am

phyics help nedded
In the figure below, three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The masses are mA = 24.0 kg, mB = 40.0 kg, mC = 30.0 kg. (a) When the assembly is released from rest, what is the ...
Friday, October 19, 2012 at 4:17am

math/calc
gotta find the first and second derivative of f(x)=x^2/(x-1) thanks for help!
Thursday, October 18, 2012 at 10:25pm

Calculus
Find the first and second derivative for the function g(t)=t^2(3t+1)^4
Thursday, October 18, 2012 at 10:12pm

math
A 4-digit number. The sum of its digits is 18. The last two digits are 5 times as much as the first 2 digits. The hundreds and ones places have the same digit.
Thursday, October 18, 2012 at 8:32pm

nutrition
Jonathan, a two-and-a-half-year-old, lives with his mother and brothers at his grandmother's house in Chicago. His mother, Anita, works at a pharmacy to support the family. Jonathan spends his days at home with his grandmother. While Anita works, his grandmother brings the...
Thursday, October 18, 2012 at 8:04pm

Physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.120 kg, initially moves to the right at a speed of 4.90 m/s, while the second block, of mass 0.240 kg, is initially to the left of the first block and moving to the right at 7.40 m/s. ...
Thursday, October 18, 2012 at 6:21pm

physics
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. The crest of the second hill is circular, with a radius of 38.1 m. Neglect friction and air resistance. What must be the height h of the first hill ...
Thursday, October 18, 2012 at 6:07pm

physics
Why is this following situation impossible? A normally proportioned adult walks briskly along a straight line in the +x direction, standing straight up and holding his right arm vertical and next to his body so that the arm does not swing. His right hand holds a ball at his ...
Thursday, October 18, 2012 at 6:04pm

1. What enabled people of northern Italy to sponsor learning? (1 point) Martin Luther's ideas a mild climate wealth from trade help from the Germany government 2. What did German leaders want during the Reformation? (1 point) to increase the pope's power to collect ...
Thursday, October 18, 2012 at 3:26pm

math
sally and susan had an equal amount of oney each. after sally spent \$15 and susan spent \$24, the ratio of sally's money to susan's money was 4:3. how much money did each girl have at first?
Thursday, October 18, 2012 at 7:12am

math
sally and susan had an equal amount of oney each. after sally spent \$15 and susan spent \$24, the ratio of sally's money to susan's money was 4:3. how much money did each girl have at first?
Thursday, October 18, 2012 at 7:09am

Physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.107 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.214 kg, is initially to the left of the first block and moving to the right at 6.80 m/s. ...
Thursday, October 18, 2012 at 12:08am

Math
Suppose you draw 5 cards out of a deck of 52 and get 2 spades and 3 hearts. What is the probability that the first card drawn was a spade?
Wednesday, October 17, 2012 at 11:45pm

Writing Sentences & Paragraphs
Please help! I have this assignment and really don’t know where to begin! Please let me know all my mistakes like grammar, spelling, punctuation, sentences and any other mistakes which you think I have made. Thank you all so very much in advance!!! I would really ...
Wednesday, October 17, 2012 at 11:20pm

Math
need some help on an algebra question. First we had to put the different combinations of 6 rabbits in 2 cages. Like 2 rabbits in the red cage and 4 rabbits in the blue cage...etc. Then it says to write an equation using variables that represent the rabbits and be sure to tell ...
Wednesday, October 17, 2012 at 10:13pm

Math
Jerrod started saving money in his piggy bank. The first 2 months he saved \$56. After 6 months he had saved \$168. What is the depends on statement in this problem?
Wednesday, October 17, 2012 at 9:31pm

Accounting
On June 1, 2012, Pitts Company sold some equipment to Gannon Company. The two companies entered into an installment sales contract at a rate of 8%. The contract required 8 equal annual payments with the first payment due on June 1, 2012. What type of compound interest table is...
Wednesday, October 17, 2012 at 8:22pm

Chemistry
Dear sir, madam, I am having a little problem with the solution my chemistry book gives on the following problem: We have a person whose body vitamine C concentration decays according to the following formula: 1500*0,974^t. Question A is no problem, but then question B: "...
Wednesday, October 17, 2012 at 8:16pm

Math
Jessie’s average grade in Algebra for the first two terms is 73.5. What grade must he get in the third term to have an average of 75?
Wednesday, October 17, 2012 at 8:11pm

Accounting
On June 1, 2012, Pitts Company sold some equipment to Gannon Company. The two companies entered into an installment sales contract at a rate of 8%. The contract required 8 equal annual payments with the first payment due on June 1, 2012. What type of compound interest table is...
Wednesday, October 17, 2012 at 8:02pm

Physics HELP!!
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. The magnitude of each of the charges is 3.66 μC, and the lengths of the sides of a triangle are 2.15 cm. Calculate the ...
Wednesday, October 17, 2012 at 7:50pm

AP Chemistry
The Synthesis of an Iron Oxalato Complex Salt (“Green Crystals”) In this experiment you will synthesize a compound that will contain the elements potassium, iron, carbon, hydrogen, and oxygen. Carbon and oxygen will be present in the compound as oxalate (C2O4-2) ...
Wednesday, October 17, 2012 at 7:39pm

Physics
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as shown in the figure. (a) Construct free-...
Wednesday, October 17, 2012 at 2:07pm

1. Which set represents a Pythagorean triple? (1 point) 27, 38, 42 33, 44, 55 35, 38, 42 68, 72, 81 2. Which number completes the Pythagorean triple: 12, 16, ____? (1 point) 18 20 22 24 3. A base ball diamond is square. The distance from home plate to first base is 90 feet. In...
Wednesday, October 17, 2012 at 1:41pm

math 6
Jillianknits hats for her family and friends. In the first week, she knits 4 hats. The next week, she has some help, and together, they knit four times as many hats. The following week, she has even more help, and they knit four times as many hats as the week before. The ...
Wednesday, October 17, 2012 at 12:40pm

Math
Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a face card (jack, queen, or king) given that the second card is an ace? (Round your answer to three decimal places.)
Wednesday, October 17, 2012 at 11:13am

Math
Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places.)
Wednesday, October 17, 2012 at 11:10am

Physics
HI! :( Im sorry to bother you guys but I need help on only these three questions. I'm not trying to cheat but these three are really confusing. This is the first time I've ever asked for help on the internet haha. Please dont be upset I promise this is the only time. ...
Wednesday, October 17, 2012 at 6:49am

Pre-Calculus
Laws of Logarithms Without using a calculator use the change of base rule to evaluate 1. a) log(subscript8)32(hint use base 2) =log(subscript2 32)/log(subscript2 8) = 5/3 b) log(subscript36)1296. This one doesnt even give you a hint, so how do you know which base to use? Does ...
Tuesday, October 16, 2012 at 10:25pm

physics
An eagle (m1 = 5.2 kg) moving with speed v1 = 6 m/s collides with a second eagle (m2 = 4.8 kg) moving with speed v2 = 5.6 m/s in a direction at right angle to the first one. After the collision, they hold onto one another. With what speed are they moving after the collision
Tuesday, October 16, 2012 at 6:38pm

statistics
First graders who misbehave in school may be more likely to be regular smokers as young adults according to a new study presented in the July 2004 issue of the American Journal of Epidemiology. After following a group of U.S. first graders for 15 years, it was found that among...
Tuesday, October 16, 2012 at 6:15pm

Trig
A baseball diamond is a square with sides 22.4m The pitchers mound is 16.8m from home plate on the line joining home plate and second base. How far is the pitchers mound from first base?
Tuesday, October 16, 2012 at 6:14pm

Math
Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places Wondering why I keep getting 1/4?
Tuesday, October 16, 2012 at 5:40pm

math
Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places)
Tuesday, October 16, 2012 at 4:24pm

Physics.
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block. a) Identify the horizontal force that ...
Tuesday, October 16, 2012 at 3:17pm

physics
plz tell me in which website can I get free engineering notes for first year B.E?
Tuesday, October 16, 2012 at 10:07am

English
What words help you understand the definition of musket-ball? “fall” and “bridge” “lying dead” and “Pierced” “Pierced” and “British” “safe” and “asleep” I'm not sure if the answer is "...
Tuesday, October 16, 2012 at 8:26am

chemistry
From which sublevel are the first 2 electrons for Fe removed from ______ From which sublevel is the next electron for Fe removed from _________ Why does the removal of electrons stop at this subleval and number of electron?? Please help me !!!
Tuesday, October 16, 2012 at 12:05am

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
Monday, October 15, 2012 at 9:35pm

Math
A baseball diamond is a square with sides 22.4m. The pitchers mound is 16.8m from home plate on the line joining home plate and second base. How far is the pitchers mound from first base? Step by step please.
Monday, October 15, 2012 at 8:38pm

Statistics
Over a period of about nine months, 1,353 women reported the timing of each of their menstrual cycles. For the first cycle reported by each woman, the mean cycle time was 28.86 days, and the standard deviation of the 1,353 times was 4.24 days. (a) Construct a 92% confidence ...
Monday, October 15, 2012 at 8:08pm

algebra
A stone dropped from rest travels 160 ft the first 3 seconds. How far will it have fallen at the end of 5 seconds?
Monday, October 15, 2012 at 8:02pm

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
Monday, October 15, 2012 at 7:13pm

US History
How would the French and Indian War first unite the colonists and then lead them to resent the British?
Monday, October 15, 2012 at 7:03pm

College Chemistry
We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid is monoprotic, this ...
Monday, October 15, 2012 at 5:34pm

U.S history
okay i want to check and see if my answers are corrects before i submit my stuff. can someone help ? i think i know the answers but the questions are: 1. The cotton gin changed agriculture in the South by (1 point) A. simplifying the planting process. B. making cotton the ...
Monday, October 15, 2012 at 3:51pm

university physics
Two forces act on a 4.00-kg object in a manner that the object has an acceleration 3.00 m/s2 in a direction 20.0° north of east. The first force is 15.00 N in a direction 10.0° west of north. What is the second force?
Monday, October 15, 2012 at 1:29pm

algebra
Which set represents a Pythagorean triple? 27, 38, 42 33, 44, 55 35, 38, 42 68, 72, 81 Which number completes the Pythagorean triple: 12, 16, ____? 18 20 22 24 A base ball diamond is square. The distance from home plate to first base is 90 feet. In feet, what is the distance ...
Monday, October 15, 2012 at 12:40pm

Biology
11) The recent Nobel Prize in Physiology or Medicine was awarded based on two sets of experiments. The first of these is described in the following abstract: An important problem in embryology is whether the differentiation of cells depends upon a stable restriction of the ...
Monday, October 15, 2012 at 12:03pm

Algebra
Use the Rational Zero Theorum and Descartes Rule of Signs as an aid in obtaining the first root.
Sunday, October 14, 2012 at 11:02pm

chemistry
Cl2O2 (g)---> 2ClO (g) Time [Cl2O2] (M) 0....... 6.60*10^-8 172..... 5.68*10^-8 345..... 4.89*10^-8 517..... 4.21*10^-8 690..... 3.62*10^-8 862..... 3.12*10^-8 Determine the value of the first-order rate constant. For this question, you need to graph it on excel in order to...
Sunday, October 14, 2012 at 8:30pm

English
Okay we are doing work from the texas write source skills book pages 61-70. The directions say: write the correct word for each word in parentheses that is used incorrectly. This is it: I will Number them . Please tell me if any are wrong. Thank you! 1(Accept) for 2(ringing)my...
Sunday, October 14, 2012 at 6:08pm

Physics
a) You have two forces, 105.5 N and 61.5 N. What is the magnitude of their resultant if the first acts upward and the second acts downward? Answer in units of N. b) What is the direction of the resultant? c) What is the magnitude of their resultant if they both act downward? ...
Sunday, October 14, 2012 at 5:54pm

Economics
A firm uses a single plant with costs C = 160 + 16Q + .1Q2 and faces the price equation P = 96 - .4Q. a. Find the firm’s profit-maximizing price and quantity. What is its profit? b. The firm’s production manager claims that the firm’s average cost of production ...
Sunday, October 14, 2012 at 2:36pm

physics
1.In one dimensional motion, instantaneous speed v satisfies 0 ≤ v < v0. (a) The displacement in time T must always take non-negative values. (b) The displacement x in time T satisfies – vo T < x < vo T. (c) The acceleration is always a non-negative number...
Sunday, October 14, 2012 at 8:50am

Math
Sum of4th and the 6th terms of an a,p is 42 . While the sum of the 3rd and 9th terms of the same a.p is 52. Find the (a) first term (b)common difference (c) sum of the first ten terms of the progression. Solution
Sunday, October 14, 2012 at 4:28am

precal
A pile driver pounds a steel column into the ground. On the first drive, the column is pounded 1.65 metres into the ground, and on each successive drive it moves 80% as far as it did on the previous drive. The least number of drives required to drive the column a total of 8.2 ...
Sunday, October 14, 2012 at 2:53am

Math
A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (3,2). write the length L of hypotenuse as a function of x.
Saturday, October 13, 2012 at 11:27pm

pre-cal
what is the slant asymptote of the graph of the rational function and b use the slant to graph the rational function. f(x)x^2-x-20/x-6 a. y=? or either there is no slant rational function B. use the slant asymptote to graph the function(first determine the symmetry of the ...
Saturday, October 13, 2012 at 10:35pm

Science- Chemistry
In the standard deviation, the decimal place of the first non-zero digit indicates where the precision of the average ends (decimal place where the individual results deviate from each other). All your mass readings have 5-6 significant figures, so one might expect a standard ...
Saturday, October 13, 2012 at 10:13pm

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