Questions Asked on
October 2, 2010

physics
Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. In the event of an impact, the passenger compartment decelerates
asked by mike 
Chemistry
How many ions are produced when a formula unit of Li2CO3 is dissolved in water?
asked by Kristi 
chemistry
Consider the following reaction:4HCl(g)+O2(g)produces 2H2O(g) + 2Cl2(g) How many molecules of Cl2 would be formed from the reaction mixture that produces the greatest amount of products? Express your answer as an integer.
asked by Anonymous 
College Physics
In designing rotating space stations to provide for artificialgravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational
asked by Dawn 
Physics
Two rugby players are running towards each other. They are 37 m apart. If one is accelerating from rest at 0.5 m/s^2 and the other was already moving at 3.1 m/s and maintains her speed, a)how long before they crunch together? b)How fast was the
asked by Emily 
Physics
In a scene in an action movie, a stuntman jumps from the top of one building to the top of another building 4.0 m away. After a running start, he leaps at a velocity of 5.0m/s at an angle of 15 degrees with respect to the flat roof. Will he make it to the
asked by Flo 
english
Speech in the Virginia Convention by Patrick Henry. 3a. What measures does Henry say the colonists have already tried in their dealings with England? 3b. What examples does Henry provide to support his position that compromise with the British is not a
asked by Mr.English 
physics
A 1600 kg car traveling at a speed of 31 m/s skids to a halt on wet concrete where uk = 0.60. how long are the skid marks?
asked by mike 
physics
A 350 N child is in a swing attached to rope 1.75m long. Find the gravitational PE associated with the child relative to her lowest position when the ropes make a 30 degree angle with the vertical
asked by Anonymous 
Science
The annoying sound from a mosquito is produced when it beats is wings at the average rate of 600 wingbeats per second. What is the frequency of the sound waves?
asked by Ronnie 
physics
Consider the system shown in the figure. Block A has weight 4.91 N and block B has weight 2.94 N. Once block B is set into downward motion, it descends at a constant speed. Assume that the mass and friction of the pulley are negligible. Whats the
asked by mike 
English
Speech in the Virginia Convention by Patrick Henry 2a. what does henry say about the previous speakers? 2b What does he hope to accomplish by commenting on the previous speakers?
asked by Mr.English 
geometry
P, Q, and S are collinear and the measure of PQR = 120°. What does the measure of SQT have to equal to ensure that R, Q, and T are collinear?
asked by autumn 
Spanish
creer deber escribir recibir tener vivir TOMÁS: ¿Dónde , Diana? DIANA: Yo con mi tía aquí en D.F. pero mi familia en Guadalajara. TOMÁS: ¿ muchas cartas para tus padres? DIANA: Sí, de vez en cuando (once in a while). Y tú, Tomás, ¿ muchas cartas
asked by Christopher 
Calculus ll  Improper Integrals
Find the area of the curve y = 1/(x^3) from x = 1 to x = t and evaluate it for t = 10, 100, and 1000. Then find the the total area under this curve for x ≥ 1. I'm not sure how to do the last part of question ("find the the total area under this curve for
asked by Alyssa 
physics
a 20g projectile strikes a mud bank penetrating a distance of 6 cm before stopping. find the stopping force F if the entrance velocity is 80 meter per second.
asked by kristel 
C programming
Question: Write a program that reads integers from the keyboard until the user enters the sentinel value 999. The program should then print the minimum integer read, the maximum integer read and the average of all the integers. (Excluding the sentinel
asked by E 
Physics
A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s^2, how long does it take to catch the speeder?
asked by Emily 
math
it took 3 hours for patrol boat to travel 48km upstream and 2 hours to travel downstream. What is the current and boat speed.
asked by alex 
Statistics
Determine whether each of the following is a valid probability distribution. a) X: 0, 2, 2, 3 P(x): .1, .3, .4, .1 b) X: 5, 6, 10, 0 P(x): .01, .01, .01, .97 c) X: 14, 12, 7, 13 P(x): .25, .46, .04, .2
asked by Rhea 
physics
A bottle with a volume of 190 U. S. fluid gallons is filled at the rate of 1.8 g/min. (Water has a density of 1000 kg/m3, and 1 U.S. fluid gallon = 231 in.3.) In years, how long does the filling take?
asked by monnie 
8th grade
Why Do Girls Like Guys Who Wear Shirts With Eight Buttons?
asked by Ashley 
Chemistry
Calculate the heat released when 1.61 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
asked by Trinh 
physical science
a man walks 3.00 mi due east, then turns and walks 2.00 mi due north. How far is he from the starting point?
asked by michele 
engineering of science
What mass of water is produced from the complete combustion of 8.90×10−3g of methane
asked by Eric 
English
In the Speech in the Virgina Convention by Patrick Henry, 1. If you had been in the audience, how would you have responded to Henry's Speech Why?
asked by Mr.English 
physics
A bottle with a volume of 190 U. S. fluid gallons is filled at the rate of 1.8 g/min. (Water has a density of 1000 kg/m3, and 1 U.S. fluid gallon = 231 in.3.) In years, how long does the filling take?
asked by monnie 
physics
Two point charges are located as shown in the figure, with charge q1 = +3.2 C at x = − 3.0 m, y = 0, and charge q2 = +2.5 C at x = +1.0 m, y = +2.0 m. An electron is now taken from a point very far away and placed at the origin. How much work must be
asked by melody 
Chemistry 2
How many grams of O2 will dissolve in 2.50L of H2O that is constant with pure O2 at 1.00atm?
asked by Mae 
engineering of science
What mass of oxygen is needed for the complete combustion of 8.90×10−3 of methane?
asked by Eric 
english
Speech in the Virginia Convention by Patrick Henry. 4a. What course of action does Henry want the colonists to take? 4b What is Henry's answer to the objection that the colonists are not ready to fight against British?
asked by Mr.English 
Chemistry
what are the oxidation numbers for each element in the compound NaClO4?
asked by Renee 
chemistry
pure zinc metal into a solution of copper(II) sulfate, the zinc will slowly dissolve to produce zinc sulfate solution, and the copper(II) ion of the copper(II) sulfate will be converted to metallic copper. Write the unbalanced equation for this process.
asked by astoeck 
Business Accounting
Who can be harmed when a company changes its accounting method to often? why?
asked by kristi 
accounting
The following costs were incurred by Shumway Company in purchasing land: cash price, $84,000; removal of old building, $5,200; legal fees, $3,000; clearing and grading, $3,500; installation of fence, $3,400. (a) What is the cost of the land? (b) What is
asked by Thara 
Science
The perio of a 440 Hertz sound wave is______ seconds.
asked by Ronnie 
Chemistry
The bond enthalpy of N2(g) is 418.0 kJ/mol. Calculate ÄH°f for N(g).?
asked by Trinh 
math
A student wants to send a bouquet of roses to her mother for Mother's Day. She can afford to buy only two types of roses and decides to randomly pick two from the following four varieties: Blue Bell, Yellow Success, Sahara, and Aphrodite. Label the
asked by Anonymous 
physics
Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 30 m/s. Car B uses tires for which the coefficient of static friction is 0.7 on the same
asked by Sarah 
math
mrs.blalock tied her goat with a 12foot rope to a stake in the field.the goat ate a circular area around the stake with a radius the lenght of the rope.what was the area of grass eaten by the goat????
asked by sam 
chemistry
To what volume should you dilute 48mL of a 13M stock HNO3 solution to obtain a 0.122 HNO3 solution?
asked by Anonymous 
Chemistry
Calculate the molality of ethanol in a solution of water, if the mole fraction of ethanol is 0.300.
asked by DrChem 
Chemistry
what is the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate.
asked by Ari 
Chemistry
If Cobalt(II)Sulfate is heated too strongly, the following reaction will occur CoSO4 produces CoO(s)+ SO3(g) If you are heating a sample of CoSO4.6H20 and this reaction occurs along with dehydration, what will happen to the experimental percent water?
asked by Sarah 
Organic substances
Is adhesive tape organic or inorganic? Also are shoes organic? I think they might, be but Im not so sure. Are paper clips organic? They are made of some type of metal, but I don't think they are organic. Is an mp3 organic?
asked by Anonymous 
college physics
If a is acceleration, v is velocity, x is position, and t is time, then check the validity (wrong or correct) of the following equations using dimensional analysis: a) t2 = 2x/a b) t = x/v c) a = v/x d) v = a/t ALSO , The term 1/2 PV^2 rv2 occurs in
asked by ayan 
accounting 2
allen company sells flags with team logos. Allen has fixed costs of $588,000 per year plus variable costs of $ 5.50 per flag. Each flag sells for $ 12.50.
asked by jenny 
calculus
1) Solve for x in terms of k: log3(x) + log3(x+7) = k; 3 is the base 2) e^(x+5) = e^(x) + 6, solve for x. Please help, I have no idea how to do these and I've tried several times!
asked by Cornelius 
physics
A 3.0 kg block is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 30° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25.(a) Calculate the magnitude of the frictional force on the
asked by Alejandra 
Chemistry
Why was the term "organic" originally chosen? Give an example of an original organic substance. My answer: The term organic was originally chosen because early chemists believed that certain chemicals were only found in living organisms. These chemicals
asked by Anonymous 
English
• Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. This is what I have can you please let me know if I have done this correctly. 1. Financial planning
asked by Rene 
Science
Using the analogy of the air capacitor, what do you think might be the cause of charge motion during capacitor discharging?
asked by Ronnie 
Chemistry
What is the minimum amount of 5.0M H2So4 necessary to produce 24.1g of H2(g) according to the following reaction? 2Al(s) +3H2So4(aq) produces Al2(So4)3(aq) + 3H2(g)
asked by Anonymous 
chemistry
What is the minimum amount of 5.0M H2SO4 necessary to produce 24.1g of H2(g) according to the following reaction? 2Al(s) + 3H2SO4(aq) produces Al2(SO4)3(aq)+3H2(g). Express your answer using two significant figures.
asked by Anonymous 
stats
A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of
asked by jaz 
English
IS this sentence a fallacy? If so what type? If you start out with a bottle of beer a day and then go to a glass or two of wine in the weekends, you're well on your way to becoming a hopeless drunk.
asked by Tara 
chemistry
If 220. mL of 0.1364 M aqueous LiOH and 0.3553 L of gaseous CO2 measured at 1.36 atm pressure and 360 K are reacted stoichiometrically according to the equation, what mass (g) of gaseous CO2 remained? 2 LiOH(aq) + CO2(g) → Li2CO3(aq)
asked by zero 
Science
1. What is the direction of charge flow when charging a capacitor? When discharging a capacitor? What is your evicence?
asked by Ronnie 
chem
what are the net ionic equations for ClO3^; Zn^2+ undergo hydrolysis?
asked by Andy 
math
if e,f,g, and h represent 4 distinct, and the 4 digit number efgh x 9= hgfe, find the values of each letter.
asked by morris 
Chem
The bond enthalpy of N2(g) is 418.0 kJ/mol. Calculate delta H°f for N(g).?
asked by Trinh 
physics
a bus slams on brakes to avoid an acciden.the tread marks of the tires are 80 meter long. if coefficient of kinetic friction is 0.7, what was the speed before applying the brakes?
asked by kristel 
adult education
You are a share analyst for an investment firm and are investigating the return on shares in the Mean Corporation over the last four years. The return on Mean Corporation shares over the last four years is presented. Calculate the geometric mean rate of
asked by Stats 
Quotes
I don't get this quote from Mark Twain. "Golf is a good walk spoiled." What does he mean by spoiled?
asked by AL 92 
physics
way performance, an 95.6 kg actor swings from a 4.30 m long cable that is horizontal when he starts. At the bottom of his arc, he picks up his 55.0 kg costar in an inelastic collision. What maximum height do they reach after their upward swing?
asked by Anonymous 
physics
A train is traveling up a 3.6 incline at a speed of 3.30 when the last car breaks free and begins to coast without friction.
asked by Anonymous 
math help
A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of
asked by jaz 
Science
Consider a circuit with a capacitor, battery, wire, and bulb. Describe the source(s) of charge during capacitor discharging.
asked by Ronnie 
ALGEBRA
The perimeter of a triangle is 76 centimeter. The second side is twice as long as the frist side. The thrid side is four centimeter shorter than the second side. How long is each side?
asked by SWEETS 
Math
Order of operations Solve: 8_2_1_3_4=5
asked by melanie 
Science
What are at least five findings and assumptions that make up the model of the behavior of electricity?
asked by Ronnie 
Chemistry
For a given reaction 2A + B > C, if the concentration of A doubles then the reaction rate doubles. If the concentration of both A and B doubles then the reaction rate increases by factor of 8. What is the order of the reaction with respect to B?
asked by Anonymous 
US History
3. The War of 1812 ended with a. a clear victory for the US b. a clear victory for Britain c. the removal of all British claims to land in North America d. a return to the prewar boundaries between the US and British territories. D? Thanks MC
asked by mysterychicken 
Science
Consider a circuit with a capacitor, battery, wire, and bulb. Describe the source(s) charge during capacitor charging.
asked by Ronnie 
math
if the circumference of a circle is 16 meters,what is the approximate area of the circle
asked by leslie 
Enligh
I am writing an argument paper on school uniforms and I had prepare an outline. Let me know what needs work. Thanks! I. School uniforms should be required in all public schools because not only do they cut down on the teasing and bullying but they also
asked by Taylin 
math 20 please check
Jacob is 25 yrs old and hopes to retire by 55. He invests $22,000 in an RRSP that earns a rate of 9.7% per annum, compounded quarterly. What will his investment be at age 55? A=P(1+i)^n 2200(1+.097/4)^120 =$390067 to get the 120 I did 5525=30 then * by 4
asked by Sandi 
Linear Equations
Can you check these thanks. Linear Equations Directions: Write each equation in standard form. 1. y=7x5 Answer: 7xy=5 2. y=3/8+5 (3/8 is a fraction) Answer: 3x8y=40 3. x= 2/7y+3/4 Answer: x+14y=12 4. 3y5=0 Answer: x+3y=0 Find the xintercept and
asked by Rachel 
SOCIAL STUDIES
I am doing a country project on India and I need to know the climate of India. I tryed looking for some facts but I didn't find any. Please suggest me some good sites for finding the climate of India or just give some good facts for India's climate. Thanks
asked by Zoey 
Medical
Select an accreditation agency and name an area of records management that is affected by its guidelines? How does accreditation affect the practical activities of record management in hospitals?
asked by michelle 
Math
Jackson wnats to give everyone in his class (including himself) 1 piece of bubble gum candy and 1 Toostie Pop. Bubble gum comes in packages of 6 pieces, and Toostie Pops comes in bundles of 5. There are 25 other students in his class (26 including him. How
asked by Bridgett 
To Bridgett
Your post has been removed. Jiskha is NOT the place to post ads for anything, no matter how noble you may believe they are. Please use another forum for such communications.
asked by Writeacher 
math
the are of a is 151 square meters.whats the perimeter?????
asked by jennifer 
Math
Simultaneous equation and surds 5x3y=41 (7route2)x+(4route2)y=82
asked by Tom 
math (Gaussian n! formula)
I'm trying to figure out the generalized form of the Gaussian nfactorial (n!) formula. I keep seeing n!= n(n+1)/2 but that's not working. For example: 5!= 120 but 5(6)/2 or 6(5/2) is 15; a far cry from 120. I don't understand what I'm doing wrong;
asked by John 
Math 20(interest rates)
Determine the amount of interest charged on a loan of $5000 at 6.75% per annum, compounded semiannually for 3 years.
asked by Sandi 
science
At 8 degrees celseis what state is bromime in?
asked by Megan 
Science
A marine Weather reports waves along the shore that are eight seconds apaart. The frequency of the waves is therefore___ Hertz.
asked by Ronnie 
Geometry
How many sides does a polygon with an interior angle measure of 120 degress have?
asked by Anono. 
algebra
Please help on this: ^ means exponent Simplify 48y^6z^0 ___________ 8y^6 z^2
asked by Alex 
12th grade economics
what does the process of specialization do for the economy?
asked by alexis 
College Physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 29 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward
asked by Dawn 
Physics
An object of mass 6.10 has an acceleration a = (1.13m/s^2)x + (0.699m/s^)y. Three forces act on this object:F1, F2,and F3.Given that F1=(3.31N) and F2 = (1.20 N)x + (1.83N)y, find F3.
asked by Anonymous 
trig
how do you solve: find cos2x if sinx is equal to 1/5
asked by berlyn 
English
I can't think of a word to describe the reaction from the townspeople? Their gossiping about the Rev... Suprised... I'm stuck A Rev comes to town and the next day the whole town talks about the Rev
asked by Amy~ 
Math
Find the intercepts of the equation y=2x1 by plotting points. To plot this would I just plot 2,0 and then go down 1?
asked by Hannah 
college physics,electric potential
Four point charges, each with Q = 7.2 µC, are arranged at the corners of a square of edge length 3.6 m. What is the electric potential at the center of the square? V? Please show me how to solve this.Thanks
asked by melody 
7th grade math
25t=25t+5
asked by Karan 
Math
When a concrete structure is built, an engineer often performs a slump test on the concrete to ensure that it is of suitable strength and consistency. The engineer fills a truncated cone with a bottom diameter 200mm, top diameter 100mm and height 300mm
asked by Emma 
algebra
I have no idea how to do this problem. Find the product: z squared plus 7z8 z sqaured8z  X __________ z squared64 z1
asked by Lizzy 
statistics
suppose that 52percent of us sleep between 7 and 8 hours a day .find the decimal for 51 percent
asked by britt 
calculus
when we do differentiable equation, do we need to time the constant c by a number for example, case A: 2y=3x+c is y=(3x/2)+c case B: 3y=x+c is y= (x/3)+c case C: y=x+c is y=xc
asked by flame 
physics
a 40N forcee pulls a 4kg a horizontal distance of 8 meterr. the rope makes an angle of 35 degree with the floor and the coefficient of kinetic friction is 0.2. what is the work done by each acting on block?
asked by kristel 
History
I need to write a piece about the "objectives of imperialism" in AustriaHungary. What are some good, reliable internet resources that I can use for information? Thanks (:
asked by Anonymous 
11th grade
How do you solve for x^2 + square root of 6 times x 3 is > or = to 0?
asked by Mike 
Math(Please help)
Determine whether the points (0,3)(2,0)(2,7) are on the graph of the equation y = x^3  2x +3? How would I do this?
asked by Hannah 
Need help creating a monthly cash budget (hwk)
I started, but don't know if I'm going in the right direction: Here is the information on the sheet: Your carpet cleaning entrepreneurship: Supposed that your hometown is Petoskey, Michigan. After college graduation you decided to go into business for
asked by Claire 
biochemistry
how do you make a 200ml of a 0.1M solution that has a molecular weight of 121.1g/mol
asked by Anonymous 
gcse french
i need to write about what my future partner will be like i need to use future tense and negative tense any help id appreciate thankyou! :}
asked by kellie 
stats
This past summer the LifeSaving Society did a survey about who was at risk in the water, with the goal of reducing swimming accidents. (Globe and Mail July 15 2010) Consider a similar study done that shows that 96 % of those born in Canada can swim but
asked by az 
math
solve the inequality 2y5>8 what will be the solution in interval notation
asked by Anonymous 
Physics
I don't know the answer
asked by Anonymous 
com155
• Write a third and final paragraph in which describe your strategy for using WritePoint in the future. o Include a discussion of how to accommodate submission and feedback time. o Underline your topic sentence.
asked by Anonymous 
com155
• Post your three paragraphs as Microsoft® Word attachments. The paragraphs are as follows: o The corrected version of the paragraph submitted to WritePoint o The paragraph describing feedback from WritePoint o The paragraph in which you talk about your
asked by Anonymous 
English
What are some funding expectations that institutions have.
asked by linda 
world history
How did the formation of a constitutional monarchy in France influence the advent of democracy in America? How was the development of democracy in America different from France?
asked by Sarah M. 
chemistry
how many moles of H2 are produced from 5.0M H2SO4
asked by Anonymous 
chemistry
2 solids samples each contain sulfer, oxyegen, and sodium only. These samples have the same color, melting point, density, and reaction with an aqueous barium solution. Are they solutions?
asked by lauren 
science
what colour would a green dress,red lipstick and white shoes appear under yellow disco lights and why
asked by doris 
calculus
Please tell whether im correct. decide whether function is autonomous ODE 1)dy/dx=(y1)/x, i think this is autonomous since it doesnt depend on x right? 2)dy/dx=yx, this is not since it depends on x
asked by flame 
algebra
(d)are the strategies that you listed in step(c)equally viable? might any of them yield a solution to the problem more readily than others? if so, why?
asked by Darrin 
calc
I am not sure how to approach this...I have to find the value of x that makes the derivate of f(x) equal to zero...here's what I have so far (is it correct?) and how is the problem finished? Thank you very much! f(x) = (1/x) + ln(x) f'(X) = lnx + (1/x) 0
asked by APpreciate student 
science
what is the 8th continent?
asked by anonymos 
rewriteacher gcse english
sorry i didn`t write it was about shakespear. thanks for your help
asked by honeybee 
english
At three pm i will be feeding the ducks.At the park. is this sentence a fragment
asked by chris 
pre algebra
133p=5(3+2p)
asked by Karan 
6th grade
what is accleration?
asked by mariam 
math help
solve the inequality 2y5>8 what will be the solution in interval notation
asked by Anonymous 
math
3v^2=8v
asked by Anonymous 
math
n/41/6>2/3
asked by Samiyah 
math
5/2v4=7/2v
asked by Samiyah