Questions Asked on
May 5, 2013

chemistry
Complete the two reduction half reactions for the cell shown at the right, and show the line notation for the cell by dragging labels to the correct position. (The electrode on the left is the anode, and the one on the right is the cathode.) They give you
asked by shanonn 
English
In these four sentences, the word that’s most obviously a loaded word is? 1. Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4.
asked by Nikita 
7 STATS MATHGURU PLEASE HELP
A doctor wants to estimate the HDL cholesterol of all 2029 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming s=17.8 based on earlier studies? Suppose the doctor would be content with
asked by Megan 
Math help please
1. (9m + 6) + (–5m – 6) 4m + 12 14m + 12 14m – 12 4m 2. (3r^2 + 7r + 1) + (4r^2 – 8r – 2) 7r2 + 15r – 1 7r2 – r – 1 7r2 – 15r – 3 –r2 – r – 1 3. (6h + 1) – (9h + 4) –3h – 3 15h – 5 –3h + 3 –3h + 5 4. (–7w^2 – 2w
asked by Delilah 
Chemistry PLEASE HELP!
Check all of the following statements which are TRUE for a titration. Select one or more: a. A suitable primary standard must be available. b. The concentration of the solution in the buret (the titrant) must be known before the titration is begun. c.
asked by Sophie 
statistics
The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is moundshaped and symmetric with a mean of 24.6 mpg and a standard deviation of 11.2 mpg. If 30 such cars are tested, what is the probability the average
asked by james 
7th Grade Math
What is the measure of an exterior angle of a regular polygon in which the sum of interior angle measures is 5400 degrees? A. 11.25 degrees B. 30 degrees C. 32 degrees D. 168.75 degrees
asked by Hilda 
geometry
The longer diagonal of a parallelogram measures 62 cm and makes an angle of 30 degrees with the base. Find the area of the parallelogram if the diagonals intersect at angle of 70 degrees.
asked by Katreena 
Maths (Calculus)
A current i = 50sin 100πt mA flows in an electrical circuit. Determine, using integral calculus, its a) Mean Value b) RMS Value each correct to 2 decimal places over the range t = 0 to t = 10 ms I need to do this two way so I was thinking of using the
asked by Dylan James 
chemistry
A manometer attached to a flask contains NH3 gas have no difference in mercury level initially as shown in diagram. After the sparking into the flask, it have difference of 19 cm in mercury level in two columns. Calculate % dissociation of ammonia. (1) 21%
asked by Anonymous 
math
Brian has been making octagonal wooden puzzles. He wants to make some hexagonal puzzles next. By how much does he needs to increase or decrease the angle measure on his template to make the hexagonal puzzles? A. increase by 15 degrees B. decrease by 15
asked by Cassidy 
Statistics
A researcher wishes to estimate the proportion of adults who have highspped internet access. What size sample should be obtained if she wishes the estimate to be within .02 with 90% if A) She uses a previous estimate of 0.48? B) She does not use any prior
asked by Megan 
MATH
A STUDENT COUNCIL COMMITTEE IS MADE UP OF 4 BOYS AND 5 GIRLS.IF 2 COMMITTEE MEMBERS ARE CHOSEN AT RANDOM TO ATTEND A CONFERENCE,WHAT IS THE PROBABILITY THAT BOTH MEMBERS WILL BE BOYS?
asked by ALEXIS 
science
what happens to the Gforce as the speed of the centrifuge increases?
asked by kate 
physics
A light spring with a spring constant of 15.2 N/m rests vertically on the bottom of a large beaker of water, as shown in (a) below. A 5.26 103 kg block of wood with a density of 636.0 kg/m3 is connected to the spring, and the massspring system is allowed
asked by John Miller 
Biology
If a normal man marries a normal woman whose father was colourblind, what are the chances that their sons and daughters will be colourblind? Colourblindness is a sexlinked trait that affects males more often than females. With the aid of a Punnett square,
asked by Su 
Math
How long would it take to double your money at 15.86 percent with interest compounded annually?
asked by Katie 
physics
an object is thrown upward with an initial velocity 'u' m/s. derive an expression for the height 'h' at which its kinetic energy becomes equal to its potential energy.
asked by Annointed Jesu 
Math
If you are dealt a 5card hand from a standard deck of 52 playing cards, what is the probability (rounded to 6 decimal places) that you are dealt at least 4 hearts?
asked by Jenn 
STATSHELP
A poll was conducted that asked 1015 people how many books they had read in the past year. Results indicated that xbar= 12.3 books and s=16.6 books. Construct a 95% confidence interval for the mean number of books people read. ____, _____ PLEASE HELP
asked by Megan 
math
1/8 of a small box of detergent cleans 1 load of laundry. How many loads could you wash with 5 boxes of detergent? I need to round numbers but i do not know which ones to round.
asked by Anonymous 
Math
How many of the first 1001 Fibonacci numbers are divisible by 3?
asked by Mathslover Please help 
Physics
A circuit contains a selfinductance L in series with a capacitor C and a resistor R. This circuit is driven by an alternating voltage V=V0sin(ωt). We have L=0.015 H, R= 80 Ω, C= 5e06 F, and V0=40 volts. Q) Find the energy UC(t) and the energy UL(t)
asked by rishabh gupta 
Chemistry
Why is this reaction considered exothermic? "Concentrated sulfuric acid dissolves in water and the solution becomes warmer." This is a homework question and when I answered the problem, I thought it was endothermic because the solution is gaining heat, but
asked by Katie 
chem
Given an aqueous solution in which the [H+] = 2.5EE7 M, what is the molar hydroxide ion concentration
asked by kris 
calcullus
Suppose the quantity demanded per week of a certain dress is related to price by the demand equation p=√752x. In order to maximize revenue, how many dresses should be made and sold each week?
asked by greg 
college Chemistry
Conductivity test, what controls the brightness of the light? (hint: think about your tapwater abd NaCl results and why they were different)
asked by judy 
American National government
According to the trustee model of representation, members of Congress must do what
asked by Jean 
Chemistry
cr(s)>Cr^3(aq)+3e and Pb2+(aq)+2e>Pb(s) write a balanced equation Please help thanks
asked by Tommy 
Chemistry
cd2+ (aq) +ni(s)> cd(s) + ni2+ (aq) what is the half reaction
asked by Layla 
Algebra
Factor each of the following expressions completely. (a+b)^2(2b)^2
asked by anonymous 
algebra
If the gross profit rate on the sale of a radio is 28% of the selling price, what is the gross profit rate based on the cost of the radio?
asked by anonymous 
Intro Chemistry
Given: C2H2(g) +2HF(g) > C2H4F2(g) Find: pressure in a 10.0L flask when the reaction is complete When 1.0 mol of C2H2 and 5.0 mol pf HF are reacted in a 10.0 L flask, what will be the pressure in the flask at 0 degrees C when the reaction is complete?
asked by Laichun 
Math
Kathy has ribbons that have lengths of 7 inches, 10 inches, and 12 inches. Explain how she can use these ribbons to measure a length of 15 inches.
asked by Stone 
PreCalculus
45. log b sqrt 7x 46. log b sqrt (3/y) Could someone please explain these?
asked by Caroline 
Marketing Math  markup/mark down
A clothing retailer purchased a line of fall leather coats which were priced to sell at $600 each. This price reflected a markup of 45% on the selling price. At the end of the season the retailer had three coats left, which were marked down 25% and sold.
asked by anonymous 
Slavery
how much were slaves paid after the civil war
asked by Alex 
Pre calc
Write the equation in standard ellipse form and graph. 34 x^2 24xy +41y^2 +41 y^2 25= 0. i got x= (4 x prime 3 y prime)/5 and y=(3x prime +4y prime)/5 but cant get the correct math when I plug that into the original equation. Also I need help finding
asked by Rebekah 
Business Finance
In 9 years, Rollo Company will have to repay a $100,000 loan. Assume a 6% interest rate compounded quarterly. How much must Rollo Company pay each period to have $100,000 at the end of 9 years?
asked by D Johnson 
Finance
Twice a year for 15 years, Warren Ford invested $1,700 compounded semiannually at 6% interest. What is the value of this annuity due? (p. 319)
asked by D Johnson 
Mandlenkosi high
Provide recommodation on how to address the topic that you identified in previous quesion?
asked by Nomzamo muthwa 
math
An 8 in. by 10 in. photo is reduced by dividing the length and width by 2. What is the new perimeter?
asked by Anonymous 
Chemistry
The density of concentrated sulfuric acid is 1.84 g/mL. If this corresponds to 18 M, what is the molality of the solution? Molar mass= 98. 98 x 18 =1764g/L  1.84 =1762.16/1000 = 1.76 kg 18/1.76=10.23 m But my only options are: a) 18 m b) 95.5 m c) 240 m
asked by ramire2 
Geometry
Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 17 more times to get chords C2,C3,…,C18. What is the expected number of pairs of chords that intersect?
asked by Sambaran G. 
Analytic Geometry
What is the equation of the circle touching the lines x3y11=0 and 3xy9=0 having its center on the line x+2y+19=0 .
asked by John 
Physics
Consider the following standing wave, (all units are SI) z=0.2sin(0.4y)cos(350t) (a) The values of y where the displacement is always zero, are of the form y=a+bn, where n=0,±1,±2,3, etc. What is a? (b) The values of t where the displacement at all
asked by rishabh gupta 
Physics
To measure how far below the ocean surface a bird dives to catch a fish, a scientist uses a method originated by Lord Kelvin. He dusts the interiors of plastic tubes with powdered sugar and then seals one end of each tube. He captures the bird at nighttime
asked by Lily 
Algebra
y = ax, has asymptote ________ and yintercept ________.
asked by Connor 
Statistics
Maureen is a cocktail hostess in a very exclusive private club. The IRS is auditing her tax return. Maureen claims that her average tip last year was $4.75. To support this claim, she sent the IRS a random sample of 52 credit card receipts showing her bar
asked by Kay 
Chemistry
cd2+ (aq) +ni(s)> cd(s) + ni2+ (aq) what is the half reaction
asked by Layla 
Chemistry
cd2+ (aq) +ni(s)> cd(s) + ni2+ (aq) what is the half reaction
asked by Layla 
Chemistry
What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
asked by judy 
life orientation
two institutions organizations that are involved in supporting redress to these disasternd how organization are involved in providing safe nd healthy environment
asked by mohlago 
STATISTICS
Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 15, upper bound is 27. A)The point estimate of the population mean is ________. B) The margin for error for the confidence interval is
asked by Megan 
Chemistry
one morning you are given 3 test tubes of aqueous solutions of compound X: the "A" tube was set up as unsaturated, while "B" was set up as Saturated in a beaker, then poured of into the tube, and "C" was carefully set up as supersaturated. At lunchtime,
asked by judy 
Chemistry
So we're doing oxidationreduction reactions and batteries and voltages. We did a lab where we would take two metals, put it in a mixture (bleach/water/vinegar/salt) and used a voltmeter to see the DC voltage. Now we're supposed to 'calculate the potential
asked by Ari 
College Chemistry
What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
asked by judy 
L.O
PROVID RECOMMENDATIONS FOR HIV?AIDS
asked by NELSON 
chemistry
a 35.0ml sample of 37 hcl solution has a density of 1.18g/ml. the sample is diluted to a volume of 0.125L. what is the molarity of the final solution ?
asked by john 
english
What is the adjective from love?
asked by Kasie 
Stats help
A poll conducted in 1972 asked 1003 people, " During the past year, about how many books did you read either all or part of the way through?" Results of the survey indicated that xbar=18.9 books and s=1 9.9 books. A)Construct a 95% confidence interval for
asked by Megan 
hw
a train 100m long is to cross a river bridge of length 800m .what time will it take to cross the bridge ? given that the train moves with a constant velocity of 36 km/h
asked by Anonymous 
Stats help
A poll conducted in 1972 asked 1003 people, " During the past year, about how many books did you read either all or part of the way through?" Results of the survey indicated that xbar=18.9 books and s=1 9.9 books. A)Construct a 95% confidence interval for
asked by Megan 
All Subjects
I've got loads of GCSE exams coming up this month and I don't know the best way to revise for them all. Please help!
asked by Need Help ASAP 
physics
what is velocity of falling salt ball if it had 1 kg mass and placed 5 m high before,now falls after losing 10gm of mass.
asked by pradev 
Advanced Functions/Trig
Prove the identity: cos^4 x + sin^4 x = 1  (1/2)sin^2 (2x)
asked by Zack 
Life orientation
In 1015 lines critically discuss 5 ways in which the human or enviromental problem impacts on the community. Provide relevant sources to support your claims.
asked by kayleen 
Asympotes, Data?Bump
If someone could help me on this, I'd appreciate it. f(x)= 2x/(x^2+1) Vertical: none Horizontal: none Minimum: x=1 Maximum: x=1 Inflection Points: it seems like there are one or two, but i don't know how to factor f''(x)= 4x^3 + x^2  12x + 1 :/
asked by Alaina 
chemistry
WHEN DOES A CHEMICAL BECOME A DRUG?
asked by anna 
Chemistry
How do you find the equilibrium constant? ..steps?
asked by Katie 
Statistics 7
A doctor wants to estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming s17.8 based on earlier studies. Suppose the doctor would be content
asked by Megan 
chemistry
a 35.0ml sample of 37% hcl solution has a density of 1.18g/ml. the sample is diluted to a volume of 0.125L. what is the molarity of the final solution ?
asked by john 
CHEMISTRY
WHEN DOES A CHEMICAL BECOME A DRUG?
asked by PLEASEE HELP MEE 
college Chemistry
What would you expect to be the chemical names of the main gases that were dissolved in the tap water?
asked by judy 
MA 130
Your salary is to be raised 10% and then a month later reduced by 10%. There it will remain. However, you may elect to have the cut first followed by the raise one month later. Which is the better option?
asked by Enis 
math
supposed that there are 440 students in class. What is the class rank of the student at the 20th percentile
asked by Anonymous 
Physics
A man lifts a heavy stone using a bar supported at a stationary point. Which phenomena in daily life in terms of the scientific principles
asked by GAP 
physics
A 1,600 kg car coasts down a hill starting from rest and decreases its height by 22 m over a distance of 90 m of travel. How fast will it be going at the end of the hill, if friction has no effect in slowing its motion?
asked by Anonymous 
math
What does 1/10 equal in percent?
asked by ethan 
Chemistry 104 PLEASE HELP ME!!
Determine the weight of Na2C2O4 which is required to react completely with 20.0ml of 0.02M KMnO4.
asked by Sophie 
Life orientation
I NEED HELP In 1015 lines critically discuss 5 ways HIV/AIDS problem impacts on the community.
asked by Blessing 
Algebra
Simplify each of the following expressions into simplest terms. a) {[X+Y+(2)*(2Y)*[XY]}/[(XY)^2+(X+Y)^2] b) (X^3+4X^2Y+4XY^2+2XY6Y^2)/(X+2Y)
asked by Leo 
finance
1110. A U.S. firm wants to raise $15 million by selling 1 million shares at a net price of $15. We know that some say that firms “leave money on the table” because of the phenomenon of underpricing. a. Using the average amount of underpricing in U.S.
asked by MK 
economics
explain the economic logic behind Opec's decision to reduce output
asked by Remo 
VBS 2010
Write a Web program to calculate the discount rate and interest rate for a bond. If a bond is purchased for n dollars and sold one year later for m dollars, then the discount rate is m2/m and the interest rate is mn/n, where each is expressed as a
asked by David 
algebra
solve for each of the variables. a. 8(7x+3)/42(3x)=0 c. [3(x+3)]/5+y/2+2z=1 x/3+[(5y2)/4]+z=0 x[2(y+1)/3]3z=2 d. 1/(x+3)2/(x2)=5/(x+3)
asked by anonymous 
chemistry
Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles of He, Ne, and Ar at a total pressure of 8.35 atm.
asked by Jenny 
PreCalculus
My book doesn't explain how to do these problems.. The examples they tell me to refer to have no relevance whatsoever. Any help would be appreciated. Use the power property to rewrite each expression. 17. log_3(x)^2 18. log_2(x)^5 19. log_4(5)^1 20.
asked by Caroline 
Biology
An individual with blood type O receives type A blood. The phenomenon is agglutination. Can explain more?
asked by GAP 
Algebra 2 ..........
When finding an equation of a sine and cosine graph can I use any of the three coordinates (that have the same y value ) to substitute for h and k? Is there a designated one?
asked by Anonymous 
Physics
An ice chest at a beach party contains 12 cans of soda at 2.45 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 9.60kg watermelon at 25.3 °C to the chest. The specific heat capacity of watermelon
asked by Tim 
geometry
The construction of the regular pentagon is equivalent to the construction of the point in the unit circle with x coordinate x1 = the square root of 5  1 divided by 4. Use this to construct a regular pentagon that has all its vertices inside the unit
asked by JoAnne 
statistics
No calculation required. what test would be used to predict what the tuition will be in 20 years if it has gone up the past five years?
asked by red 
Physics
Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0 °C, starting with (a)2.99 kg of water at 100.0 °C and (b)2.99 kg of liquid water at 0.0 °C.
asked by Tim 
Life orientation
Factors that contribute to HIV&AIDs and discuss how HIV&AIDS impact on the teenager how to overcome this disease
asked by Katlego 
Chemistry
cr(s)>Cr^3(aq)+3e and Pb2+(aq)+2e>Pb(s) write a balanced equation Please help thanks
asked by Katie 
chemistry
Using the following thermochemical data, what is the change in enthalpy for the following reaction? Ca(OH)¿(aq) + HCl(aq) d CaCl¿(aq) + H¿O(l) CaO(s) + 2HCl(aq) d CaCl¿(aq) + H¿O(l), DH = 186 kJ CaO(s) + H¿O(l) d Ca(OH)¿(s), DH = 65.1 kJ
asked by ciara 
Intro Chemistry
Given: 2CO(g) + O2(g) > 2C02(g). When 10 mol of CO and 8.0 mol of O2 react in a closed 10L vessel. a)how many moles of CO, O2, and CO2 are present at the end of the reaction? b)What will be the total pressure in the flask at 0 degrees C?
asked by Laichun 
math
I am supposed to find the area of a segment of a circle. The circle is cut with two radi with an angle of 90 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and
asked by Hannah 
english
At the foot of these fairy mountains the voyager may have descried the light smoke curling up from a village whose shingle roofs gleam among the trees, just where the blue tints of the upland melt away into the fresh green of the nearer landscape. It is a
asked by mandy 
maths
6log(x^2+1)x=0
asked by ELIJAH HAVA 
math
In Ms Smith's class, 20% of the girls wear glasses and 15% of these girls have red hair. If one girl is selected at randon from Ms Smith's class, what is the probability the girl will have red hair and wear glasses?
asked by wendy 
Pre calc
Write the equation in standard parabola form? x^2+ 4xy +4y^2 +5root5 y+ 5 = 0
asked by Rebekah 
Physics
A lawnmower engine with an efficiency of 0.29 rejects 5500 J of heat every second. What is the magnitude of the work that the engine does in one second?
asked by Tim 
math
john and james are among 30 students who have applied for a trip to boy's state. two students from the group will be selected at random from the trip. what is the probability that john and james will be the 2 students selected?
asked by lizette 
Calculus
A rectangle in the first quadrant has one vertex as the origin, and other vertex on the curve y= x^2 2x +4. If the rectangle has one side lying on the xaxis, find the largest possible area of the rectangle.
asked by Megan 
Algebra
Prove by mathematical induction that 3^(3n+1) + 2^(n+1) is divisible by 5
asked by Joe 
math 2
Julie is solving the equation 3x2 + 5x + 15 = 0 and notices that the discriminant b2  4ac has a value of 155. This tells her that the equation has
asked by Anonymous 
Physics
A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This refrigerator uses 216 J of work to remove 2360 J of heat from the food inside. What is the temperature inside the refrigerator?
asked by Tim 
trig
A slide is attached to the side of a tree house. The height of the tree house is 6 less than double the distance from the baswe of the tree to the base of the slide. The length of the slide is 3 more than the height of the tree house. Find the length of
asked by Kendra 
Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.
asked by SOMEONE HELP THIS PERSON 
statistics
A test has 1 true false question and 2 multiple choice questions(A B C D). Draw a tree diagram and determine the sample space for the possible ways to answer the test.
asked by janae 
Life Orientation
Identify and describe 3 environmental health hazards that cause ill health,crises or disasters within your community
asked by Anonymous 
english
a dolls house questions: what religious themes do you see in the play? What is the significance of Nora’s words, “to hell and be damned” in Act I? Was Nora wrong to have acquired the money for the trip to save Torvald’s health? What elements of
asked by allie 
math
If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum
asked by Anonymous 
life orientation
Suggest 5 recommendations on how to address the environmental problems within a community within South Africa
asked by yolanda munro 
Math
How do you find the price of each share if 700 shares of stock are sold for $55.00 ?
asked by Matthew 
Algebra 1
How many real number solutions exist for 2x^2 + 8x + 8 = 0 The first part is 2x to the power of 2.
asked by Jos 
Physical Science
A car of mass 900 kg moves at 10 m/s. What is the braking required to stop the car in a time of 5 seconds
asked by Wanda 
French
What is a French word that fits into this sentence? Tu m'____ I know that the letters go like this: a_t_n_l
asked by Deidre 
math
If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum
asked by Anonymous 
Physics
An Xray tube used for cancer therapy operates at 33 MV with a beam current of 79 mA striking a metal target. Calculate the power of this beam. Answer in units of W
asked by Cameron 
life orientation
in 1015 lines critically discuss 5 ways in which the human or environmental crime impacts on the community.
asked by Anonymous 
Writing
If I use a quote as a title, do I capitalize every first letter in the quote? Example: Should my title be... "The only place success comes before work is in the dictionary" or "The Only Place Success Comes Before Work Is In The Dictionary" please answer
asked by MathMat 
Calculus
A rectangle in the first quadrant has one vertex as the origin, and other vertex on the curve y= x^2 2x +4. If the rectangle has one side lying on the xaxis, find the largest possible area of the rectangle.
asked by Megan 
life orientation
in 15 lines fires can be critically in which the human or environmental problem impacts on the community.
asked by Gugu 
Physics
A rollercoaster car is moving at 20.0 m/s along a straight horizontal track. What is its speed after climbing a 15.0 m hill?
asked by Jaime 
Chemistry
How do you find the equilibrium constant of: B + O2 BO2 ??
asked by Megan 
Physical Science
if a blue object is placed in front of the screen, what color will it be? explain the answer.
asked by Wanda 
Relational Database
Update the data in the Employees table so that employees with the following managers are listed as working in the following departments: The UPDATE statement in SQL. I cant figure the statement, I keep getting syntax error. Help. ReportsTo Department
asked by Hy'Lee 
Calculus I
find the antiderivative of f(x)=(x^2)/(x^3+5) with explanation
asked by Jason 
Life orientation
In ten to five lines critically discuss five ways in which the human enviroment problem impacts on the community.provide relevant sources to support your claims
asked by Nhlakanipho 
math
Will someone please help me with this problem. Simplify the expression, if possible. log 1.
asked by Sammy 
Finance
the dividends of the reisner company are expected to grow at an annual rate of 18 percent for the next 5 years, then at a rate of 12 percent each year for the next 4 years, and thereafter grow at a rate of 5 percent each year. if the reisner company's
asked by Ola 
Physics
The bar in the figure has constant cross sectional area A. The top half of the bar is made of material "1" with mass density ρ1, and Young’s modulus E1. The bottom half of the bar is made of material "2" with density ρ2 and Young’s modulus E2=2E1.
asked by HELP NOW 
physics
A barefoot fieldgoal kicker imparts a speed of 47 m/s to a football initially at rest. If the football has a mass of 0.6 kg and the time of contact with the ball is 0.024 s, what is the magnitude of the force exerted by the ball on the kicker’s foot?
asked by Anonymous 
Statistics
A random sample of 10 independent observations from a normally distributed population yielded the following values 51, 53, 49, 43, 47, 46, 45, 30, 60, 52. a) Estimate the standard deviation of the sampling distribution of means for samples like this one.
asked by Deb 
computers networking
A firm is assigned the network part 128.171. It selects a 10bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. (Hint: Use Windows Calculator.) b) Convert this answer into dotted decimal notation.
asked by Anonymous 
Finance
Lance Industries borrowed $130,000. The company plans to set up a sinking fund that will repay the loan at the end of 18 years. Assume a 6% interest rate compounded semiannually. What amount must Lance Industries pay into the fund each period? Check your
asked by D Johnson 
Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.
asked by Kim 
Finance
Joe Jan wants to receive $22,000 each year for the next 22 years. Assume a 6% interest rate compounded annually. How much must Joe invest today?
asked by D Johnson 
Finance
Scupper Molly invested $1,800 semiannually for 23 years at 8% interest compounded semiannually. What is the value of this annuity due? (p. 319)
asked by D Johnson 
Finance
Nelson Collins decided to retire to Canada in 10 years. What amount should Nelson deposit so that he will be able to withdraw $80,000 at the end of each year for 25 years after he retires? Assume Nelson can invest money at 7% interest compounded annually.
asked by D Johnson 
life orientation
identify three courses or study field/career paths in order of preference and provide two reasons for each choice
asked by margareth nyaka 
Calculus
if the surface area of a sphere is given by the formula SA=4pir^2, find the rate of increase of the surface area if the radius is 4 cm and is increasing at the rate of 0.5 cm/min.
asked by Jason 
Finance
Bob Bryan made deposits of $10,000 at the end of each quarter to Lion Bank, which pays 8% interest compounded quarterly. After 9 years, Bob made no more deposits. What will be the account's balance 4 years after the last deposit? (p. 317)
asked by D Johnson 
LICKING HEIGHTS
SOLVE THE PROPORTION 12/Y =18/6
asked by BONNIE HUNT 
physics
A spring loaded gun is used to shoot a 1.3 kg ball from a rooftop. When the gun is fired, a compressed spring will be released shooting the ball into the air. The ball will travel in a parabolic path eventually striking the ground below. The gun is at an
asked by Anonymous 
Chemistry
why is it important to know accurately the mass of water used in a calorimeter?
asked by Kate 
life orientation
reccommendation on how to redress hiv and aids
asked by slindile 
Chemistry
When 100.0 g of an unknown nonelectrolyte is dissolved in 500.0 g of benzene, C6H6, the solution boils at 82.9°C. Calculate the molecular weight (molar mass) of the unknown material. Kb for benzene is 2.53°C/m and the boiling point of pure benzene is
asked by ramire2 
mathsurgently needed
Rana bought 500 shares of HCL at a rate that yielded him 20 % return on a 24%, Rs 350 share. Later on , the company issued a bonus share for every 10 shares held. When the market price was Rs 480 he sold all the shares and invested the proceeds in buying
asked by anoynomous 
life orientation
.in 10.15 lines critically discuss 5 ways in which the human or environmental problem impact on the community
asked by matomed 
PHYSICS
EXPLAIN FRICTION AT RIGID SUPPORT OF A PENDULUM SUSPENDED USING A STRING.
asked by HASNAIN 
Computer Database SQL
Update the data in the Employees table so that employees with the following managers are listed as working in the following departments: The UPDATE statement in SQL. I cant figure the statement, I keep getting syntax error. Help. ReportsTo Department
asked by Hy'Lee 
SCIENCE
WHAT CAUSES ATMOSPHERIC PRESSURE?
asked by HASNAIN 
Arts & Humanities 20th century
Hi, I am having a severe case of writer's block at the moment. My assignment asks me to pick a popular t.v series, movie, or book that I believe suggests a moral choice. Then briefly provide explanation of the section of the story I believe to be the
asked by Nicole 
SCIENCE
EXPLAIN FRICTION AT RIGID SUPPORT OF A PENDULUM SUSPENDED USING A STRING.
asked by HASNAIN 
math
The daily cost C, in RM, of producing a product is C(x)=1000+72x0.06x^2 (0 more & equal x less & equal 60) where x represents the number of product produced. a) Find the daily cost of producing 50 units b) Find the marginal cost function. c) Find C’(50)
asked by ifi 
Chemistry
Use Hess's Law to find the change in heat of 2C(graphite)+H2(g)>C2H2(g)? Given: C(graphite) + O2(g) > CO2(g) change of heat rxn = 393.5 kJ 2H2 (g) + O2(g) > 2H2O (l) change of heat rxn = 571.6 kJ 2C2H2 (g) +5O2(g) > 4CO2(g) +2H2O (l) change of
asked by Lauren 
Chemistry
10cm^3 of aa hydrocarbon was completely combusted in 200cm^3 of O2. It was found that there was 20cm^3 of O2 remaining and the volume of CO2 produced was 120cm^3. Determine the formula of the hydrocarbon.
asked by Nadya 
Chemistry
10cm^3 of aa hydrocarbon was completely combusted in 200cm^3 of O2. It was found that there was 20cm^3 of O2 remaining and the volume of CO2 produced was 120cm^3. Determine the formula of the hydrocarbon.
asked by Nadya 
law
◦What is traffic calming, and how can it alleviate fear or disorder? Describe how the safe corridor initiative benefited by furthering communitypolicing goals? Does this affect negative citizen encounters? Why? How can the police turn a negative citizen
asked by sharday 
Math Statistics
Suppose 60% of adults have a college degree. If I take a random sample of 80 adults, what is the probability at least 50% of them have a college degree?
asked by Juliet 
geometry
What are degrees of angles for pentagon with 36 sides
asked by Jeff 
college algebra
i need help with elimination and substitution linear equation
asked by vivian 
maths
it cost $2592.00 to fence a square field wire cost $18.00 per metre calculate area and side
asked by Anonymous 
chemistry
the fictitious compound pandemonium fluoride has a k value in water of 3.091*10^9 M^3.calculate the solubility of PnF2 in water. Express your answer in units of molarity.
asked by himani. 
history
explain five function of cairo
asked by anna xylmar 
Geometry
ABCDEF is a regular hexagon with side length 43√4. Points G,H,I,J,K,L are chosen uniformly at random, one from each side of the hexagon. What is the expected area of hexagon GHIJKL?
asked by Sambaran G. 
chemistry
the fictitious compound pandemonium fluoride has a k value in water of 3.091*10^9 M^3.calculate the solubility of PnF2 in water. Express your answer in units of molarity.
asked by himani. 
chemistry
the fictitious compound pandemonium carbonate has a ksg=3.091*10^9 M 3 in water at poor temperature .calculate the solubility of PnCo3 in an aqueous solution of 1.11 M pandemonium sulfate. express your answer in units of molarity.
asked by himani. 
Math
A 10 km race has 5 water stations set up around the course. What is the minimum number of people that must run in the race in order to guarantee that 10 people stop at the same set of water stations?
asked by Mathslover Please help 
life Orientation
Teenage pregnancy Critically discus 5 ways in which the human or ennviromental problem impacts on the community.
asked by sipho 
COMPUTER DATA NETWORKS
A firm is assigned the network part 128.171. It selects a 10bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. (Hint: Use Windows Calculator.) b) Convert this answer into dotted decimal notation.
asked by Anonymous 
maths
1/5 of a circle in a circle is labelled a degrees there is another angle measured a b degrees calculate b value
asked by Anonymous 
Math
Let AB be the diameter of circle Γ1. In the interior of Γ1, there are circles Γ2 and Γ3 that are tangent to Γ1 at A and B, respectively. Γ2 and Γ3 are also externally tangent at C. This exterior tangent cuts Γ1 at P and Q, with PQ=20. The area that
asked by Mathslover Please help 
chemistry
When does a chemical become a drug?
asked by please help me 
mayh
Four players are playing a game involving choosing positions on a grid of size 3×8. Each player chooses a random position on the grid, then all players reveal their choices and a token is placed on each of the positions. The probability that the tokens
asked by Mathslover Please help 
math
Four players are playing a game involving choosing positions on a grid of size 3×8. Each player chooses a random position on the grid, then all players reveal their choices and a token is placed on each of the positions. The probability that the tokens
asked by Mathslover Please help 
Math
The game Upright is played by two players on an m×n square board and has the following rules: At the start of the game, a kangaroo game piece is placed on the bottom left square of the board. Players alternate turns moving the kangaroo, and the first
asked by Mathslover Please help 
life orientation
1.Identify and describe 3environment health hazards that cause ill health,crises and or disasters within your community or any other community within south africa and globaLly.include evidence that is current of the identifted issues.use
asked by cathrine 
Math
ABCDEF is a regular hexagon with side length 4 (Under 4 root)√3. Points G,H,I,J,K,L are chosen uniformly at random, one from each side of the hexagon. What is the expected area of hexagon GHIJKL?
asked by Mathslover Please help 
Physics
a horizontal force Pushes a 80 N box up a frictionless 37 degree incline at a constant velocity as shown.? What is the magnitude of P in newtons?
asked by Naveed Khan 
Physics
Consider the series RLC circuit in which R2
asked by rishabh gupta 
Math
ABCDEF is a regular hexagon with side length 4 (Under 4 root)√3. Points G,H,I,J,K,L are chosen uniformly at random, one from each side of the hexagon. What is the expected area of hexagon GHIJKL?
asked by Mathslover Please help 
PHYSICS
A pump is required to lift a mass of 850 of water per minute from a well of depth 14.8 and eject it with a speed of 17.7 . Part A How much work is done per minute in lifting the water? Part B How much in giving the water the kinetic energy it has when
asked by YASER 
life orientation
providerecommendations on how to address the topic that you identified in the previous question.
asked by cynthia 
Math
Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 17 more times to get chords C2,C3,…,C18. What is the expected number of pairs of chords that intersect?
asked by Mathslover Please help 
Math
A,B,C,D,E,F are 6 consecutive points on the circumference of a circle such that AB=BC=CD=10,DE=EF=FA=22. If the radius of the circle is √n, what is the value of n?
asked by Mathslover Please help 
Finance
Lin Lowe plans to deposit $1,800 at the end of every 6 months for the next 15 years at 8% interest compounded semiannually. What is the value of Lin's annuity at the end of 15 years? (p. 317)
asked by D Johnson 
Finance
On Abby Ellen's graduation from law school, Abby's uncle, Bull Brady, promised her a gift of $24,000 or $2,400 every quarter for the next 4 years after graduating from law school. If the money could be invested at 6% compounded quarterly, which offer
asked by D Johnson 
Life orientation
Identify and describe 3 environmental health hazards that causes ill health and or disasters within your community or any community within south africa and globally include evidence that is current of the identified issues
asked by Ntsoaki 
Math
θ is an angle such that 180∘
asked by Mathslover Please help 
Annuities
Sanka Blunck wants to receive $8,000 each year for 20 years. How much must Sanka invest today at 4% interest compounded annually? (p. 324)
asked by D Johnson 
Math
Find the smallest positive integer n such that the equation 455x+1547y=50,000+n has a solution (x,y) where both x and y are integers
asked by Mathslover Please help 
Chemistry
Given that 1g of Phenacetin requires 82mL of hot water to dissolve, or 1310mL of cold water (TY= 3.92g): 1) How much water will you need to recrystallize the theoretical yield? 2) How much product will be lost because of recrystallization?
asked by Austin 
Creative writing
This is a question I should know the answer to, but for some reason, I don't. People in my class write their dialogues like this: ["Carrie," I said, "What was my sister's name?"] Is that comma after 'said' supposed to be there, or should it be a period?
asked by Millie 
statistics
A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least
asked by happy 
Life Orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community. Provide relevant sources to support your claims
asked by Katlego 
math
What is the sum of the exterior angles in a regular 13gon? A. 152.3 degrees B. 1980 degrees C. 360 degrees D. 3960 degrees
asked by Cassidy 
Math
N is an integer such that N≡179(mod233) and N≡233(mod179). Determine a three digit positive integer M such that N≡M(mod179×233). Details and assumptions You may use the fact that 179 and 233 are primes.
asked by Mathslover Please help 
Math (Algebra)
Find the sum of squares of all real roots of the polynomial f(x)=x^5−7x^3+2x^2−30x+6.
asked by Mathslover Please help 
Quantitative analysis
Matrix Algebra Assignment Let A= 4 −1 6 9 and B= 0 3 3 −2 Find: 1. A + B 2. AB 3. BA 4. A' (the transpose of A). 5. What is an Identity Matrix?
asked by Shavon 
Quantitative analysis
Input Output Model The Xavier Corporation has a digital electronics division and a plastics division. For each dollar's worth of plastics produced, the plastics division uses $.10 worth ofplastic and $.20 worth of electronics. For each dollar's worth of
asked by Shavon 
L.O
Identify one environmental or human factor that causes ill health, accidents or disasters within a community in South Africa
asked by yatho 
PHARMACYINFORMATICS
WHEN DOES A CHEMICAL BECOME A DRUG?
asked by PLEASSSEEE HELP MEE 
physical aspects
A 600 lb. oak packing crate is sitting on a cross grained, 14 ft long, oak ramp. The force of the box against the ramp is 520 lbs, and the downhill force on the box is 300 lbs. Will the box slide down the hill all by itself? Give the box a nudge, will it
asked by jeff 
economics
Explain the economic logic behind opec decision to reduce output?
asked by ezekiel 
MATH
IN A PHYSICS EXPERIMENT,THE DISTANCE OF X AND Y CM HAS A CONNECTION TO EACH OTHER BY 1/X + 1/Y = 1/5.IF THE DISTANCE OF Y IS INCREASING AT THE RATE 16 CMS^(1),FIND THE RATE OF CHANGE OF THE DISTANCE OF X WHEN Y=9 CM.
asked by SYAZ 
Algebra 1
You can mow your whole lawn in 45 minutes, and your neighbor can mow your whole lawn in 30 minutes. How long would it take you to mow the lawn together? Clearly show and explain each step for full credit. Using rational applications A. Write an equation
asked by Daniel 
L.O
Name two community organizations that are involved in supporting or giving redress to water pollution
asked by Lakhe Smith 
Biology
true or false if an organism randomly develops a feature that gives it a survival advantage, then it will be more likely to survive than other organisms, and will also be more likely to produce offspring which also have this advantageous feature.
asked by Need Help ASAP 
Math (Algebra)
The sum of beads owned by John, Bob, and Dale is 273. The ratio of John's beads and Dale's is 8:5, and Dale's beads are 10/13 times Bob's. How many more beads does John own than Dale?
asked by Bob 
chemistry
The percent water in methyl alcohol can be determined by gas chromatography using a capillary column coated with a nonpolar stationary phase and a thermal conductivity detector. A series of calibration standards yielded the following results: Water
asked by noha 
chemistry
We have a tank that contains O2 at 146 mmHg, N2 at 146 mmHg, and CO2 at 138 mmHg. We then add 135 mmHg of Ar. What is the pressure in the tank?
asked by Jenny 
Math (Algebra)
The ratio of men to women in the applicants for Lamborghini this year is 4:3, while the ratio of men to women in the successful applicants is 5:3, and the ratio of men to women in the rejected pile is 1:1. If the number of successful applicants is 176,
asked by Bob 
english
Could somebody check this for me please? My name is Damian Donarski I'm ten years old. I live in Bournemouth now,but I was born In Poland. I live here with my family, which has three members my parents and me. I like playing football with my friends. My
asked by kina 
jules high school
10 ways in which the environmental health hazards can impact negatively on ones health
asked by theophilus 
life orientation
A brief discription of a stroke disease
asked by yolanda 
business math
Oneninth of Polymer Plasticsâ€™ sales are made in New England. If New England sales amount to $600,000, what are the total sales of the company? (P
asked by kendrick 
statistics
The attendance at the school play on Friday was 95% of the attendance on Saturday night. If 203 people attended on Saturday night, estimate how many attended on Friday night. a minute agoEdit Question
asked by Johan 
Physics
The bar in the figure has constant cross sectional area A. The top half of the bar is made of material "1" with mass density ρ1, and Young’s modulus E1. The bottom half of the bar is made of material "2" with density ρ2 and Young’s modulus E2=2E1.
asked by AK 
Accounting
A truck was purchased for $25,000. It has a sixyear life and a $4,000 salvage value. Using straightline depreciation, what is the asset’s carrying value (book value) after 2 years?
asked by Harriett 
Chem
cr(s)>Cr^3(aq)+3e and Pb2+(aq)+2e>Pb(s) write a balanced equation Please help thanks
asked by Jess 
life orientation
provide recommendation on how to address the topic hiv/aids
asked by mohlago