Questions Asked on
October 11, 2011

Chemistry
You have a solution that contains 5.0 grams of oxalic acid dissolved in 150 mL of water. This solution is placed in a seqparatory funnel, and the 100 mL of diethyl ether is added to the separatory funnel and an extraction is performed. Use the following
asked by BOB 
Chemistry
You have a solution that contains 5.0 grams of oxalic acid dissolved in 150 mL of water. This solution is placed in a separatory funnel, and the 100 mL of diethyl ether is added to the separatory funnel and an extraction is performed. Use the following
asked by BOB 
math
Studies have shown a particular television commercial is understood by 25% of first grade students and 80% of fourth grade students. If a television advertising agency randomly selects one first grader and one fourth grader, what is the probability neither
asked by Khizar 
Physics
A diver stands at rest at the end of a massless diving board as shown in Figure P8.16. (a) If the mass of the diver is 161 kg, and the board is 4 m long, what is the torque due to gravity on the diving board? I was thinking that T=Frsin(theta)... but I
asked by Please Help!!! 
algebra
1. The statement 3x – 4 = 2x + 9 is called .
asked by charles 
calculus
How to factorise t38t2+16t?
asked by amber 
physics
Two speakers are separated by distance d1 = 2.40 m and are in phase. You are standing 3.00 m directly in front of one speaker. Each speaker has an output power of 1.20 W. Because the speakers are at different distances, there will be frequencies at which
asked by Anonymous 
calculus
How to factorise t38t2+16t?
asked by amber 
Physics
An electric motor is used to pull a 125 kg box across a floor using a long cable. the tension in the cable is 350N and the box accelerates at 1.2m/s^2[forward] for 5.0s. The cable breaks and the box slows down and stops. b) How far does the box travel up
asked by Ivo 
Physics
A student puts a 0.80 kg book against a vertical wall and pushes the book toward the wall with a force of 26N [R]. The book does not move. a) calculate the minimum coefficient of static friction. b) describe two ways the student could make the book
asked by Ika 
physics
A person pushes horizontally with a force of 170 N on a 68 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.22. (a) What is the magnitude of the frictional force? (b) What is the magnitude of the crate's acceleration?
asked by Andrew 
physics
A string is tied to a 4.4 kg block and a 120 g bucket from a pulley. Students add 20 g washers one at a time to the bucket. the students are unaware that the coefficient of static friction for the block on the table is 0.42. a) what is the maximum force of
asked by Ika 
engineering
A slotted bar is attached to the origin and rotates in the horizontal plane with a constant angular velocity of 0.665 radians/s . The bar moves a roller weighing 33.6 lb along the cam's perimeter. A spring holds the roller in place; the spring's spring
asked by HELP PLEASE! DOn't know How to do it!!! :( 
Chemistry
Imagine that you mix 50 g of a solute with 100 g of water at 40 degree C. Classify each solute by whether it would completely or partially dissolve under these conditions. KCl KClO3 K2Cr2O3 KNO3 NaNO3 Pb(NO3)2 I need help understanding the
asked by Steph 
Math
Which expression describes the area in square units of the rectangle that has a length of 10x^3y^4 units and a width of 5x^2y units?
asked by Nora Escobedo 
English
I was wondering if you could help me revise this? Questions plague the mind of many readers of why exactly Tessie Hutchinson was stoned in Shirley Jackson’s, “The Lottery”. This gruesome tale tells of an innocent woman stoned in a small village of
asked by Jessica 
FIND THE VALUE OF SQUARE
I AM A NUMBER GREATER THAN 99 AND LESS THAN 1,000. TWO OF MY DIGITS THAT AREN'T NEXT TO EACH OTHER ARE THE SAME. MY TENS DIGIT COULD NOT BE GREATER AND IT IS 1 MORE THAN MY HUNDREDS DIGIT. WHAT NUMBER AM I?
asked by ANDREW RAMIRES 
science
A Kid applies a force of 70 Newtons to a ball over 1.1 meters.How much work did he do on the ball?
asked by jasmine 
statistics
A city survey found that 47% of teenagers have a part time job. The same survey found that 78% plan to attend college. If a teenager is chosen at random, what is the probability that the teenager has a part time job and plans to attend college?
asked by Olivia 
chemistry
Calculate the molality of a 10% H3PO4 solution in water.
asked by Keva 
World HIstory! hurry please
How did the civilization that arose along the banks of the nile river differ from the civilizations of the fertile crescent?
asked by Emma 
Chemistry
Consider 2 separate solutions, one of a weak acid HA and one of HCL. Assume that you started with 10 molecules of each. Draw a picture of what each solution looks like at equilibrium. Ok to my very limited knowledge on this subject so far, a weak acid at
asked by kevin 
Math
Which expression eqivalent to 27x^2y^6/3x^5y^2z^9?
asked by Nora Escobedo 
business,social studies
Toyota used to sit on top of the world. It basked in the reputation of building highquality cars efficiently. It enjoyed unprecedented growth, even surpassing General Motors as the largest car manufacturer in the world. But all of that came tumbling down
asked by lola 
business
Group 1 will represent a major tobacco company like R. J. Reynolds or Philip Morris. . Topic that will be debated is: Should tobacco companies cease and desist all advertising in the United States? Each group should thoroughly research the issues. You will
asked by lola 
Math
1.8=[(5.0x)/100]/[x/150] Solve for x
asked by BOB 
Math
Remainder Theorem Question: For what value of b will the polynomial P(x) = 4x^33x^2+bx+6 have the same remainder when it is divided by x1 and by x+3
asked by Misha 
math
A wooden ball 7 inches in radius sinks to a depth of 10 inches in a river. Find the exposed area of the ball above the water.
asked by michael 
physics
TWO EQUAL FORCES HAVE A RESULTANT EQUAL TO 1 1/2 TIMES THE EITHER FORCE . AT WHAT ANGLE THEY ARE INCLINED TO EACH OTHER
asked by PRIYANSHU 
biotechnolgy
how much MgCl2 would you use to make 200mL of a 100mM solution of MgCl2
asked by denise 
English
Can you please check if everything is OK? Thank you 1)The witches predict Macbeth that he would be Thane of Cowdor. 2)They predict that he will be Thane... James I wrote in the Demonology what he thought witches were able to do. Corr: In his book
asked by Henry2 
College Physics
A charged particle is hanging from the side of a wall by means of an uncharged string. The wall has a negative charge producing a horizontal electric field. The particle has a mass of .01 Kg. and charge of 80(micro)C and is suspended by a string .3m long.
asked by Adam 
chemistry
An 27 liter indoor air sample is collected in a Tedlar bag in the crawl space of a building built on an old municipal dump. There is a suspicion that methylene chloride vapor may be seeping into the building. The temperature is 32¢K and the pressure is
asked by steve 
Mathematics
If (a+b)squared = 361 and ab =120, calculate the value of a squared + b squared
asked by Thomas 
vocab
10 examples noun ending x
asked by lyka 
probability
A random experiment of tossing a die twice is performed. Random variable X on this sample space is defined to be the sum of two numbers turning up on the toss. Find the discrete probability distribution for the random variable X and compute the
asked by padma.c 
calculus
tan 30=a/ 9 inches
asked by nicole 
DUMANGEZE
A 0.04KG BEAD SLIDES ON A CURVED STARTING FROM REST AT POINT A.THE EARTH FROM A AND B IS FRICTIONLESS ,WHILST THE PATH FROM B TO C IS ROUGH.IF THE BEAD ARRIVES AT POINT C WITH A SPEED OF 1M/S DERTIMINETHE AMOUNT OF WORKDONE BY THE FRICTIONAL FORCE IN
asked by THABAN 
science
churvas mass is 66kg. find his weight on earth and on the moon.
asked by james harold 
science
churvas mass is 66kg. find his weight on earth and on the moon.
asked by james harold 
macroeconomics
18. The following is a list of figures for a given year in billions of dollars. Using this data, compute: (a) GDP; (b) NDP; (c) NI; (d) PI; (e) DI; (f) Net exports. Transfer payments $ 16 Government purchases 80 Personal taxes 38 Corporate income taxes 28
asked by marc 
macroeconomics
22. The following table shows the price of a specific stereo receiver for a fiveyear period. Using year 3 as the base year, calculate the price index for each year. Year Price Price index 1 $ 88 ___ 2 $100 ___ 3 $120 ___ 4 $132 ___ 5 $140 ___
asked by marc 
macroeconomics
23. The next four questions refer to the following price and output data over a fiveyear period for an economy that produces only one good. Assume that year 2 is the base year. Units of Price Year output per unit 1 16 $2 2 20 3 3 30 4 4 36 5 5 40 6 (a) If
asked by marc 
macroeconomics
25. The following table shows the price of a specific stereo receiver for a fiveyear period. Using Year 1 as the base year, calculate the price index for each year. Year Price Price index (answers using Year 1 = 100) 1 $112 ___ 2 144 ___ 3 160 ___ 4 176
asked by marc 
macroeconomics
27. The following data show nominal GDP and the appropriate price index for several years. Compute real GDP for each year and indicate whether you have “inflated” or “deflated” nominal GDP in finding real GDP. All GDP are in billions. Nominal Price
asked by marc 
algebra
Company makes tire rims. Estimates the the profit, P, of selling x tire rims is given by: P= 0.01x^2 + 8x + 1500 Plugging in 1000 for P and solving, I get 400. Is that correct? b) find the number of rims that must be sold to maximize profit. plugging in
asked by Nabil 
Algebra
1. A car travels 20 kilometers per hour faster than a second car. The first car covers 180 kilometers in the same time the second covers 135 kilometers. What is the average speed of each car? 2. The tens' digit of a twodigit number is one more than its
asked by cassie 
kvb
Sam hits a golf ball with a fiveiron a distance of 120 m horizontally. A tree 45 m high and 35 m in front of Sam is directly in the path of the ball. Will the ball clear the tree if the ball makes a parabolic curve and has maximum height of 80 m?
asked by veera 
Calc
Suppose Y1 is a function of x which dy1/dx=3y1. Suppose y2 is a function of x which dy2/dx=8x+5. If the graphs of y1 and y2 have the same yintercept and they intersect at x=2, then determine the value of the yintercept.
asked by Andres 
chem
calculate the molality of a solution of 2.34g acetic acid, HC2H3O2, in 35.0 g water
asked by michael 
not sure
A homeschooled child is being abused by her Father. What should she do???
asked by Alice 
English
Can you please check these sentences (and my corrections)? I urgently need them. Thank you. 1) The apron stage raised five feet from the ground (not form the floor of the theatre. /It was five feet above the ground but not It was five feet high from the
asked by Henry2 
algebra
I NEED HELP SOLVING THIS PROBLEM ,PLEASE EXPLAIN AND SHOW HOW TO SOLVE the answer ."I HAVE 63 LITERS OF HYDROGEN PEROXIDE, HOW MANY TEST TUBES CAN I FILL IF EACH CONTAINED 7/8 OF A LITER?" PLEASE SHOW ME YOUR WORK. AND THANK YOU IN ADVANCED.
asked by Chuck 
STATISTICS 014
1. A manager wishes to find out whether there is a relationship between the age of his employees and the number of sick days they take each year. The data is given below: Age (X) 18 26 39 48 53 58 24 50 Days (Y) 16 12 9 5 6 2 10 7 a. What is the null
asked by azriel ed pagayunan 
STAT
A random variable X2 assumes only positive value.?
asked by azriel ed pagayunan 
Physics
A jet aircraft is traveling at 180 m/s in horizontal flight. The engine takes in air at a rate of 77.0 kg/s and burns fuel at a rate of 3.15 kg/s. The exhaust gases are ejected at 595 m/s relative to the speed of the aircraft. Find the thrust of the jet
asked by mymi 
physics
A rocket consists of a payload of 4280.0 kg and 1.626 105 · of fuel. Assume that the rocket starts from rest in outer space, accelerates to its final velocity, and then begins its trip. What is the speed at which the propellant must be expelled to make
asked by mymi 
Physics
Find the location of the center of mass for a onedimensional rod of length L and of linear density ë(x) = cx, where c is a constant. (Hint: You will need to calculate the mass in terms of c and L. Use any variable or symbol stated above as necessary.) X
asked by mymi 
physics
Find the center of mass of a rectangular plate of length 10 cm and width 39 cm. The mass density varies linearly along the length. At one end, it is 8 g/cm2; at the other end, it is 18 g/cm2. (Assume the xaxis begins at the 8 g/cm2 edge and extends along
asked by mymi 
physics
A 1175kg cannon shoots a 33kg shell at an angle of 25° above the horizontal and a speed of 495 m/s. What is the recoil velocity of the cannon? (Take the direction the cannon is firing to be the positive direction. Indicate the direction with the sign of
asked by mymi 
Physics
Two masses, m1 = 2.0 kg and m2 = 3.3 kg, are moving in the xyplane. The velocity of their center of mass and the velocity of mass 1 relative to mass 2 are given by the vectors vcm = (−1,+2.2) m/s and vrel = (+4.5, +1.0) m/s. (a) Determine the total
asked by mymi 
algebra
3. Suppose a student wants to be a millionaire in 40 years. If she has an account that pays 8% interest compounded monthly, how much must she deposit each month in order to achieve her goal of having $1,000,000? What is the present value of this annuity?
asked by beech 
algebra
1. Suppose Mary deposits $200 at the end of each month for 30 years into an account that pays 5% interest compounded monthly. a. How much total money will she have in the account at the end? b. How much total money did Mary actually deposit? c. How much
asked by beech 
algebra
Suppose a retiree wants to buy an ordinary annuity that pays her $2,000 per month for 20 years. If the annuity earns interest at 3.5% interest compounded monthly, what is the present value of this annuity?
asked by beech 
physical science
during a football game two players try to tackle another player.one player applies a force of 50.0 n to the east. a second player applies a force of 120.0 n to the north . what is the total applied force?and what is themagnitude and direction of the force
asked by sarah arcand 
Physics
In running the 40 m dash in tryouts fot the Notre Dame football team, Zach S. completes the 40 m in 4.8 seconds. Assuming constant acceleration throughout the run, find his velocity at the end of 40 m and his acceleration during the 40 m.
asked by Tanysha 
Chemistry
convert 548mL to cm3
asked by Thomas 
Chemistry question Please help
Consider the expected conductivities of CaCl2(aq) and Ca(OH)2(aq). Which of these can be expected to have the higher conductivity. Explain your reasoning.
asked by Al 
English
I checked the mistakes. Can you see if my corrections are ok? Thank you. I included my doubts in parentheses. 1)The stages raised in the center yard. Correction: in the yard projected a roofed stage, called apron stage. 2)2)This was five feet above the
asked by Henry2 
mystery trip
can you help me unscramble this famous couple names enargraaetnmgremaad
asked by Allen 
Science
Fe(No3)3(H2o)9 what is this element ??
asked by Shaqir 
chemistry
A sample of gold is at a initial temperature of 350 k. Once dropped into a coffe cup calorimeter of heat capacity 400 k^1 it contains 50 g of water at 300 k. Specific heat capacity is 0.129 for gold and 4.18 for water. what is the final temp of all gold,
asked by chad 
social science
which subjects do i have to choose when i want to became a social worker when i will be in grade 10 next year
asked by zinhle ntsebezo 
Writing
How does online classes and traditional education classes contain structure?
asked by Adryan 
Growing Puppies Word Problem/ Need Help Solving
Chritian's Chihuaha, Princess, weighs 2 pounds. Molly's Pit Bull, Psycho, weighs 14 pounds. They each seem to be gaining about a pound a month. The Pit Bull will soon weigh three times more than the Chihuahua. How many pounds will Princess weigh then?
asked by Linda 
Read My Mind Word Problem
I am thinking of a threedigit number. It is an odd multiple of three, and the product of its digits is 24. It is larger than 15 squared. What are all the numbers that I could be thinking of?
asked by Linda 
Science
are (H2o)9 and 9(H2o) the same thing ?
asked by Shaqir 
physics
The cart starts from rest at the top of a hill with height, H1. It rolls down the hill and at the bottom of the hill it has a speed of 8 m/s. Next it is at the top of same hill but pushed so that it starts at the top of the hill with a speed of 6 m/s. How
asked by zacurea 
physics
The cart starts from rest at the top of a hill with height, H2. It rolls down the hill and at the bottom of the hill it has a speed of 10 m/s. Next it is at the top of same hill but pushed so that it starts at the top of the hill with a speed of 4.59 m/s.
asked by zacurea 
literature
"Regular aerobic exercise gives an individual more endurance" is a sentence that shows cause and effect. Which word indicates the cause? A. Regular B. Endurance C. Exercise D. Individual
asked by Baina 
Math
Salma invested her savings in two investment funds. The that she invested in Fund A returned a profit. The amount that she invested in Fund B returned a profit. How much did she invest in Fund B, if both funds together returned a profit?
asked by Jasmine 
calculus
the equation V=U^5=7sqrtWWZ relates the variables, V,U,W,Z. differentiate with respect to T to get the wquation which relates the rates of change with respect to T?
asked by Anonymous 
statistics
construct the confidence interval for the population mean c=0.98,x=5.6, s=0.6, and n=45
asked by Dennis 
PHYSICS
You are camping with two friends, Joe and Karl. Since all three of you like your privacy, you don't pitch your tents close together. Joe's tent is 23.0 from yours, in the direction 25.5 north of east. Karl's tent is 38.5 from yours, in the direction 34.0
asked by TALAL 
English
How does online classes and traditional classes contain the same material?
asked by Adryan 
physics
A golf ball is hit with an initial velocity of 50 m/s at an angle of 45° above the horizontal. How far will the ball travel horizontally before it hits the ground?
asked by ashley 
Physics
A Federation starship (2500000 kg) uses its tractor beam to pull a shuttlecraft (10000) aboard from a distance of 7 km away. The tractor beam exerts a constant force of 25000 N on the shuttlecraft. Both spacecraft are initially at rest. How far does the
asked by Daniel 
Math
Idenify pairs of Additive and Multiplictive Inverses. WHAT in the world are additive and multiplicative inverses??? :(
asked by Alice 
trig
Find tanx if sinx = 3/4 and x is in quadrant II.
asked by Amber 
english
Hi, I was wondering if what i did is correct 1. Read Susan B. Anthony’s defense of her right to vote. Then, in 50100 words, write a paragraph that paraphrases that speech. This is not the place to offer an opinion, but simply to paraphrase her opinion.
asked by Anonymous 
chemistry
describe the neutralisation reactions that take place on everyday basis
asked by catty 
chemistry
what mass of water can be heated from 45 celcius to 88 celcius with 28kj?
asked by Ella 
physics
A 75.0W lamp is placed in series with a resistor and a 120.0V source. If the voltage across the lamp is 24 V, what is the resistance R of the resistor?
asked by ashley 
Lifesciences
Effectsofacidrainongerminatingseeds
asked by Phindile 
Math
A vat that have a cap to hold 45 quarts, and each bottle contains 9/21 quarts, how many bottles can be fill 45 quarts.
asked by BreeBree 
Shirley Jackson The Lottery
Questions plague the mind of many readers of why exactly Tessie Hutchinson was stoned in Shirley Jackson's, "The Lottery." This gruesome tale tells of an innocent woman stoned in a small village of 300 people. In doing so, the community thought that their
asked by HM 
chem 12
a) Calculate [H3O^+] in a 0.15M solution of benzonic acid, HC7H5O2(aq) having K of 6.4x10^5. b) Calculate the per cent ionization of the HC7H5O2. I got.. Kb = [HC7H5O3][OH]/HC7H5O2 6.3x10^5 x Kb =1.0x10^14 Kb = 1.0x10^14/6.3x10^4 = 1.5x10^10
asked by Sarah 
chemistry
what mass of water can be heated from 45 celcius to 88 celcius with 28kj?
asked by Ella 
American Gov
The most important source of political values in the United States is probably what? Mass Media Family Religion School Local Newspaper
asked by Brooke 
math
what is this,? 50.0 mg of gas which occupies a volume of0.0064 L?
asked by Anonymous 
chem 12
Calculate [H3O] an [OH] for a sodium hydroxide solution having a pH of 12.5. I know this is a strong base, and i got the pH 12.5. But i don't know how to go from there.
asked by Sarah 
English
Thank you very much. I included more sentences for you to check. I did the corrections myself. 1)No man born of woman (or a woman?) can hurt him. He believed witches could/were able (both possible?) cast spells. She encouraged piracy against the Spanish
asked by Henry2 
Math
Would 48x 2/96 be considered a Mltiplicative inverse???
asked by AliceinWonderland 
English
I left out the following sentences. Thank you for your invaluable help. 1)The theatre was structure in wood: Correction: it was designed as a wooden structure, circular in shape. 2) The upper stage was used to represent a balcony scene/as a balcony/OR to
asked by Henry2 
statistics
A sample of 12 measurements has a mean of 20 and a standard deviation of 2. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 20 each. Find the standard deviation of the sample of 14
asked by Bob 
Chemistry Help!!
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.
asked by Maci 
social studies
why would 'STOP,DROP and ROLL' be effective to put out a fire?
asked by sandy 
calculus
The volume V of a cylinder is computed using the values 9.8 \text{m} for the diameter and 3 \text{m} for the height. Use the linear approximation to estimate the maximum error in V if each of these values has a possible error of at most 8 \%.
asked by Britt 
Organic chem 2
Hello, I am having some trouble trying to reduce a benzene ring with a H3CC=NNH2 substituent, to a cyclohexane with the same substituent. The ring is attached to the carbon that is double bonded with the nitrogen. Apparently the hydrogenation, H2/1000psi
asked by Matt 
Chemistryplease help
"Use a 10% w/v nitric acid solution." How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of conc nitric acid (65%) and dilute to 100ml with water?
asked by jessie 
English
In the Shakespeare play, The Taming of the Shrew, where does Petruchio live?
asked by Anonymous 
MATH
MT WAIALEALE,HAWAII HAS A VERY DAMP CLIMATE. WITH AN AVERAGE ANNUAL RAINFALL OF 11,684 MILLIMETERS. RICHMOND VIRGINIA AVERAGES ABOUT 508 MM OF PRECIPITATION. HOW MANY TIMES GREATER IS THE PRECIPITATION AT MT WAIALEALE?
asked by NICK C 
Engineering Statistics
"A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the
asked by Christian 
Chemistry
C3H6O + 4 O2 ¨ 3 CO2 + 3 H2O how many coefficients?
asked by Anonymous 
Physics
You like to swim at a nearby lake. On one side of the lake is a cliff, and the top of the cliff is 69 m above the surface of the lake. You dive of the cliff doing somersaults so as to have an angular speed of 5.5 rev/s. How many revolutions do you make
asked by Anon 
physics
a jogger runs with a veloicty of 6km/h (25 degrees N of W) for 35 min and then changes direction, Jogging for 20 min at 4.5km/h (65 degrees E of N). Using the parallelogram method for vector addition, determine the joggers total displacement and his
asked by neil 
math
Show that Sn is nonabelian for n>=3
asked by Jackie 
physics
Projection
asked by Okelade 
physics
Projection
asked by Okelade 
english
I was wondering if what i did is correct 1. Read Susan B. Anthony’s defense of her right to vote. Then, in 50100 words, write a paragraph that paraphrases that speech. This is not the place to offer an opinion, but simply to paraphrase her opinion. Use
asked by Anonymous 
biology
what salts are present in the composition of human sweat. Find out what elements are present in the composition of human sweat and what salts are formed by these elements.
asked by Anonymous 
physics
The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly named creature captures its prey by shooting a stream of water drops at an insect, either flying or at rest. The bug falls into
asked by tibby 
Chemistry
Can you draw a dipeptide and show all the functional groups, atoms, and bonds, any full charges on atoms, and the "R" group. Also, show N and C terminus? It would really help if you can show me pictorially.. thanks
asked by Sam 
Finance
I have a case study to do and I'm not sure how to go about it. I need to find the present value for three different offers, all of which have a 10% rate and ordinary annuities. This is the first offer: $1,000,000 now $200,000 each year for years 6 through
asked by Justin 
ANSWERS FOR TEACHER AID TEXT 02604500
ANSWERS FOR TEACHER AID TEST 02604500
asked by DEE 
elements of calculus
write the equation of the line tangent to the curve y= 3x^3 2x at the point where x=2
asked by tara 
elements of calculus
find ds/dt if s= sqaureroot of t over (3t 1)
asked by tara 
elements of calculus
if d^2y/dx^2= x/x^2 +1, find d^4y/dx^4
asked by tara 
elements of calculus
cost, revenue, and profit are in dollars and x s the number of units cost: if the cost function for a particular good is C(x)= 3x^2 +6x + 600, what is the (a) marginal cost function (b) marginal cost if 30 units are produced? (c) interpretation of your
asked by tara 
Physics
What is the KE (in J) of a 2650 lb Honda Civic traveling at 100 mph?
asked by Wingly 
algebra
34*(n*2)=680
asked by Anonymous 
MATH
DAN,DEBBIE,ED AND GENE WERE TRAINING FOR CROSSCOUNTRY RACING. ED RAN TWICE AS FAR AS DEBBIE. GENE RAN 8KM LESS THAN ED. DEBBIE RAN 5KM MORE THAN DAN. DAN RAN 6KM.HOW FAR DID EACH PERSON RUN? (HINT START WITH DAN'S DISTANCE AND WORK BACKWARDS)
asked by STELLA 
Finance
assume that $10 million dollars of debt replaces 625,000 shares of common stock. The intrest in the new stock is 11.25 percent what will projected earnings per share be based on the anticipated sales increase of $500,000
asked by tony 
chemistry
caculation: 2Na3PO4(aq)+3BaCl2(aq)> 6NaCl(aq)+Ba3(PO4)2(s) a)determine the maximum g of Ba3(PO4)2 that can be formed from your mass of Na3PO4x12H2O b)determine the maximum gram of Ba(PO4)2 that can be formed from your mass of BaClx2H2O
asked by marilyn 
ALGEBRA 1 HONORS
whats the answer to x+4=4y
asked by Erin 
Alg 1 quadratic equations
I'm doing quadratic equations x^2 +bx+c =0. I know how to questions like x^2 +17x +42 =0 but this one says, j^29jk10k^2. I have no clue on what I need to do
asked by Austin 
math
pls. factor and explain: 125x^6+8 are there any technics?
asked by justme 
ELA HELP
leaf:spinach::root: Is it flower,carrot,tomato,and lettuce?
asked by renae3 
math
the area of a rectangle is it length multiplied by it width
asked by aaron 
U.S. History
What country controlled territory to the North of the U.S. Boundary.
asked by Cortez 
prealgebra
When a baseball is hit it comes in contact with the bat for 0.001 seconds.Write that as a negative exponet?
asked by lala 
chemistry
The energy levels the electron can occupy in the H atom can be calculated using the energy level equation. Calculate the wavelength (nm) of the photon absorbed when the electron goes from a n= 1 energy level to a n= 3 energy level. Express answer in
asked by Chris 
Chemistry
I need to supplement 20g of magnesium. Supplement comes with 825mg/ ounce. How many mg's or ounces to get to the 20g. Thanks
asked by Sue 
Math
Rounded to the nearest hundred, Tim has 300 photos. How many photos could Tim have? 344, 402, 449 or 382
asked by Amy 
Alg 1
I'm doing quadratic equations x^2 +bx+c =0.I'm supposed to factor each polynomial. I know how to questions like x^2 +8x +12 =0 but this one says, j^29jk10k^2. I'm confused
asked by Cole 
math
aunt alice gave each of her three nieces a number of silver dollars equal to their ages. the youngest felt that this was unfair. they agreed to redistributed the money. the youngest would split half her silver dollars evenly with the two sisters. the
asked by mike 
U.S. History
What Seaport di the United States gain Through The Lousiana Purchase
asked by Cortez 
math
How do u get a perimeter.
asked by Kim 
U.S. History
After the Lousiana Purchase what Formed Our Eastern And Western Boundaries
asked by Cortez 
U.S. History
Control of which natural feature was the most important geographical advantage of The Louisiana Purchase
asked by Cortez 
Math
How do I round 78 to the nearest hundred with only two digits?
asked by Amy 
physics please help!!
A 0.267kg ball is thrown straight up from 2.20m above the ground. Its initial vertical speed is 9.20m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time.
asked by archi 
Math
What is 2.5 cm x 2.5 cm =
asked by Kim 
Chemistry
How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of concentrated nitric acid (65%) and dilute to 100ml with water?
asked by jessie 
math
8/125x^3 + 64y^6 i tried doinhg this but i still don't get it..pls help me...
asked by justme 
definition
what is a humanitarian?
asked by jennifer white 
U.S. History
Control of which natural feature was the most important geographical advantage of The Louisiana Purchase
asked by Cortez 
chemitry
show that the equivalence amount of citric acid for 1.00g of sodium bicarbonate is 0.76g
asked by paul 
English
Here are some more sentences on the same theme. I hope you can have a look at them. Thank you.It's really urgent. 1)The upper stage was used as a balcony or by musicians. The inner stage was used, for example, for the Juliet’s tomb scene (can you say
asked by Henry2 
math
How do u get a perimeter.
asked by Kim 
chemistry please help ASAP
how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe
asked by elizabeth 
Math
Identify the sampling technique used to obtain this sample: Each person boarding a plane is asked to flip a coin; those showing “tails” have their luggage searched.
asked by Jen 
Math
In your own line of work, give one example of a discrete and one example of a continuous random variable, and describe why each is continuous or discrete.
asked by Jen 
math
What is the correct set up for: How many milligrams are in 67 Kilograms? Is this correct: 67kg x (1g/10^3kg) x (1mg/10^3g) Thank you!
asked by Connie 
Chemistry for Engineers
How many mL of .2475M Sr(OH)_2 solution are needed to neutralize 25 mL of 0.1542M HCL solution in the reaction 2HCl + Sr(OH)_2 > SrCl_2 + 2H_2_O
asked by Austin 
physics
A skier starts from rest at the top of a hill that is inclined at 11.0° with respect to the horizontal. The hillside is 190 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the
asked by Anonymous 
Math
The number 80710 is rounded to 2 SF? The choices are confusing A) 80700 B)81000 C)8070 D)8100 E) None Is E correct? B and D are both 2SF A and C are 3SF??? Thanks for you help.
asked by Connie 
chmistry
what substance has the density of .60g/ml
asked by james 
ALGEBRA SIMPLIFY
I cant figure this out 6 /2 * 88 /2 i got 6/2 * 88 /2 3*8 4 24 4 = 20 is this right way?
asked by Marko 
English
I left out the following sentences. Thank you very much in advance. 1) It was raised 4 feet FROM/OFF the ground (both possible?) 2)Elizabeth fought a big ship war (?? naval war) against the Spanish Armada. She made England a seafaring power also thanks to
asked by Henry2 
physics
Two objects (m1 = 5.15 kg and m2 = 2.75 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 5.15kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each
asked by dennis 
physics
The electric motor of a model train accelerates the train from rest to 0.780 m/s in 33.0 ms. The total mass of the train is 510 g. Find the average power delivered to the train during its acceleration.
asked by Anonymous 
math
use the quotient and reciprocal identities to simplify the given expression cot t sin t csc t sin t tan t cot t cot t sec t
asked by Anonymous 
college physics
A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 4.00 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block
asked by Anonymous 
Math (Translate each sentance into a equation)
1. The difference between three times a number and 11 is 10. Whould it be: 3x  11 = 10? 2. One more than the difference between 18 and seven times a number is 9. Would it be: 1 + 18  7x = 9? 3. 26 more than the product of a number and 17 is 42. Would
asked by Dab 
math
The foci and vertice of 2x^2+5y^2+8x+10y+3=0
asked by Bolu 
Math 12
(2,1) is a point on the graph of y= f (x) . Find the corresponding point on the graph of each of the following functions a) y= f (x) +2 b) y= f (2(x+9))7 c) y= f (x2) +2 d) y= 0.3f (5(x3)) e) y= 1 f(1x) f) y= f (2(x8))
asked by Tarkan 
math
Aunt Alice gave each of her three nieces a number of silver dollars equal to their ages.The youngest felt that this was unfair. They agreed to redistribute the money. The youngest would split half her silver dollars evenly with the other sisters. The
asked by mike 
chemistry
Consider a system consisting of two oppositely charged spheres hanging by strings and separated by a distance r1, as shown in the accompanying illustration. Suppose they are separated to a larger distance r2 , by moving them apart along a track. What is
asked by echo 
math
what is the total price of a sweatshirt that is priced at $48 and taxed at 6.5%?
asked by chloe 
english
In part 3 "Burning Bright" in fahrenheit 451 novel .What symmetry lies in rebuilding of the city? can you explain what they mean in this question ? thank you
asked by mike 
Chemistry
The density of any material can be determined by the slope of a straight line by plotting mass values and vol. values M=DV Mass g. Vol.ml #1 0.55 0.60 #2 1.75 1.80 #3 3.50 3.40 #4 5.60 5.25 #5 7.50 7.00 I need to find the slope and graph the info. So do I
asked by Connie 
math
what is greater than 7.8 but less than 7.9
asked by tessy 
math
need to calculate total purchase price I can afford for a home. monthly income $5875. .28 x $5875.=$1645.monthly mortgage 7.70 interest for 25years.placing 25% of my yearly income down. this is as far as I have gotten... 7.70x = 1645. 7.70x 1645 7.70 7.70
asked by old me 
physics
A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 4.00 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block
asked by Anonymous 
physics
calculate horizontal force that must be applied to 1kg to make 6ounce to make it accelerat on horizontal friction three hour table dropped with same acceleration it would have if it and feel freely
asked by tina 
chemistry help please ASAP
how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe
asked by elizabeth 
simplify ALGEBRA
8+6 * 2 +4 = 24   12 / 2 6 I GOT 4 Is that correct
asked by Marko 
trig
PERIMETER OF A RECTANGLE IS 32CM AND AREA IS 55CM FIND THE LENGHT.
asked by Anonymous 
calculus
Please help me find the derivative of f(x) = x^(2^x) I got to ln(f(x)) = 2^x(lnx) but now I'm stuck..
asked by terra 
English
In one to two sentences, define revision
asked by Anonymous 
social Studies
How were different forms of power acquired during industrialization?
asked by max 
Algebra Question
Luisa ran 3 miles on the 3rd day of a month, and she repeated her run every 4 days for the rest of the month. What equation describes the sequence of days of that month that Luisa ran?  I have no idea how to begin this.
asked by Dab 
Calculus
Find derivative of (x+1)/(x^2+1)^(1/2)
asked by Joe Schmo 
science
describe the process of dialysis
asked by Anonymous 
English
can someone help me turn this paragraph so it can sound like a personal narrative, A week has passed since the dog left. We haven’t heard good or bad news of him. Every day since he left we would be looking in the nearby parks and around the block. One
asked by Mario Garcia 
algebra find mean
find the mean median most for : 12 2 3 7 9 10 10 i got for median 7 most: 10 mean: i got 12 + 2 = 14 3,7, 9, 10, 10 = 39 now im stuck how to get mean? can you help
asked by Marko 
Algebra 2
Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of the city. If d represents the
asked by Mary 
algebra 2
a diamond was purchased for $2500. If is its value increases 6% each year, give the value of the diamond after 10 years?
asked by walid 
science
Suppose you have 7 pieces of wood shown to the right. Predict what will happen
asked by Anonymous 
math
how to write algebraic expression the square of a number k which is then multiplied by 13
asked by Anonymous 
science
Any ideas on making a 3d model of the eye. There arent any rules.thanks
asked by mm 
physics
A model rocket is launched straight upward with an initial speed of 51.6 m/s. It accelerates with a constant upward acceleration of 1.96 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The acceleration
asked by a 
estem
how much work is done on a vacuum cleaner pulled 5.0m by a force of 45.0 N at an angle 35 above the horizintal? solving work
asked by tosin 
Grade
Ok today during social studies I got this mini progress report (it's a overview on what grade I have right now before they send our real progress report which they may send this week or next week) and like I just want to know what GPA i got. Here it is &
asked by Laruen 
social studies
We are using the bookjourney across time 9the early ages) pg. 105 no. 22 asks "What advantage did Judah have over Israel? It shows a map the the Israelite kngdom, and I's supposed to answer it with the map. I have noclue. Can anyone help? Thanks.
asked by Lynn 
Science
Suppose you have 7 pieces of wood shown to the right. Predict what will happen to the mass of the pieces of wood if you put them together without cutting them to make a birdhouse
asked by Anonymous 
Math
What does A+B+C equal if A=6,B=3 and B=C?
asked by Genesis 
Math
Solve two solutions. If there is a solution write it or I there isn't any write no solution. 3ly3l = 9 (l l is absolute value sign)
asked by Please help 
math
what is the sum of radical x 1 and (x1)^2 when x= 5?
asked by britt 
Science
What is sometime call your windpipe
asked by Shavon 
math
How do you find GCF (boomerang method)?
asked by Nathan 
ALGebra Simplify
I cant figure this out 6 /2 * 88 /2 i got 6/2 * 88 /2 3*8 4 24 4 = 20 is this right way? 29  (3+5) *2 +3 i got 16 is that right? 5[6+3(40/8) + (2)exponent 2 i got 9 x5 = 45 + 4 = 5 49 = 44 is that correct?
asked by Marko 
math
how to do 23x17
asked by BILLY 
estimating sums
the flower shop received a shipment of 432 roses. they need to fill an order for 273 roses. use any method to estimate how many roses they will have left
asked by shiv 
Astronomy
Imagine that Earth did not turn on its axis. (a) What would be true about the ecliptic? It would now define the day rather than the year. It would still be defined and could be seen from all points on Earth, but only when they faced the sun. It would still
asked by Anonymous 
Accounting
According to the SarbanesOxley Act, the responsibility for issuing a report on a company's internal controls over financial reporting rests with: A.) both the company and its independent auditor. B.) the company. C.) the independent auditor. D.) neither
asked by HELP! 
Math
Find the value of x: 20x ≡ 9 (mod 15)
asked by Francesca 
Math
The halflife of carbon14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon14 is present at time 0 yr, or x=0. Write the equation that expresses the percentage of carbon14 remaining as a function of time.
asked by Hanna 
Math
Journal one box hold 16 crayons another box jold 24 crayons. Write a sentence using word that compares the crayons in the the two boxes.
asked by Mary 
math
a boy is blowing a spherical balloon at a rate of 50 cm3/s.at what rate is the radius of the balloon changing when the radius is 10 cm?give your answer to 2 decimal places.
asked by jj 
math
How do you find GCF (boomerang method)?
asked by Nathan 
science
What are three methods scientists use to form scientific explainations ?
asked by Ashleigh 
trig
Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2  theta)
asked by Ryan 
Math
An amusement park charges $20 up front to rent a canoe. There is an additional charge of 150 cents per hour. Write an equation that relates the total amount of rent R in cents to time h in hours.
asked by None 
Physics
A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 7.5 m waterfall. If the spy's speed is 19 m/s and the officials' speed is 24
asked by Emily 
chemistry
A 3.664 g sample of monoprotic acid was dissolved in water and required 20.27 mL of a 0.1578 M NaOH solution for neutralization . Calculate the molar mass of the acid
asked by TROUBLED 
Math
The selling price for a raincoat is $ 76.09. What percent of the sale price is the markup, if the cost of the raincoat was $ 70 ? ( Round to the nearest whole percent ) (a) 8 % (b) 7 % (c) 5 % (d) 10 % (e) 9 %
asked by Anonymous 
physics
A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h = 58 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? s (b) With what speed
asked by Emily 
physics
A skier is accelerating down a 30.0° hill at a = 3.70 m/s2 ( (a) What is the vertical component of her acceleration? m/s2 (downward) (b) How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly,
asked by Emily 
chemistry
calculate the volume of mL of a 1.420 M NaOH solution required to titrate the following solution. 25.00 mL of a 1.500 M H3PO4 solution
asked by TROUBLED 
Physic
A car is slowing down at a rate of 20 km/h/s. How far does it travel if its original velocity is 50 km/h and its final velocity is 5.0 m/s?
asked by Anonymous 
Statistics
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34?
asked by robyn 
Math
The markup on a video camera should be 37 % based on selling price. If the seller paid, $ 390 for one, then how much should it be sold for to achieve the desired markup? (a)$ 404.34 (b) $ 1,054.05 (c) $ 404.43 (d) $ 619.05 (e) $ 534.30
asked by Anonymous 
Math
My tens digit is double my one digit.I am less than 70 greater than 60.
asked by Mary 
math
a boy is blowing a spherical balloon at a rate of 50 cm3/s.at what rate is the radius of the balloon changing when the radius is 10 cm?give your answer to 2 decimal places.
asked by jj 
MATH
jake says adding 0 does not change a number. Is he correct? Explain.
asked by Brent 
English
My brother and I lie down to see how many of us could fit inside a blue whale. Underline the predicate
asked by Medy 
physics
Mars has a mass of about 6.8 × 1023 kg, and its moon Phobos has a mass of about 9.5 × 1015 kg. If the magnitude of the gravitational force between the two bodies is 4.66 × 1015 N, how far apart are Mars and Phobos?
asked by Joe 
calculus
y = (ln x)^(cos4x) Use logarithmic differentiation to find the derivative of the function.
asked by John 
Algebra
I need help! The question is what numbers for which the rational expression is underfined in 8/9x+7
asked by Katy 
math
the bus passes through Sierra Blanca, which is 90 miles from El Paso. About how long does it take the bus to get to Sierra Blanca?
asked by ruby 
physics
a 75 kg person escapes from a burning building by jumping from a window 30 m above a catching net. Acceleration due to gravity is 9.81 m/s^2. Assuming air resistance is simply a constant 96 N force on the person during the fall, determine the person's
asked by Emily 
algebra
3b+7=2 14+h/5=2 h/5=fraction m/8+4=16 m/8=fraction 3x1=8 35=3+5x 3+m/3=12 m/3=fraction x4=20 5=z3
asked by katie 
trig
Given that tan B= 7/24 with B in quadrant III, find sin 2B, cos 2B, and tan 2B, using angle identities.
asked by Ryan 
SCIIEENNNCEE
how do we see upright if the images produced by our eyes are vertically inverted ( i know our brain does something to fix it... but not sure exactly what) Merci
asked by mm 
Math Middle School
Please help me solve this challenge problem: I love hot chocolate and coffee. I began by making one cup of hot chocolate. I drink half of my cup and then I fill the cup with coffee. I stir the new mixture and drink half of the cup and then fill the cup
asked by HELP PLEASE!!!!! 
Alzhemiers
How does alzhemiers have abnormal cell division? Please give me any link to any site, thanks.
asked by Anonymous 
physics
a room that measures 10.o ft wide, 32.0 ft long, and 8.00 ft high needs a certain amount of air pumped into it per minute to keep the air quality up to regulations. If the room needs completly new air every 20.0 minutes, whjat is the volume of air per
asked by vc 
math
2.Define the shape of the rectangular area by establishing a relationship between the length and width of the rectangle. For example, L = 2W + 5, or W = 3L – 4. Be sure to include the appropriate units (inches, feet, yards, miles, or meters). 3.Using the
asked by Anonymous 
physics
Two children float motionlessly in a space station. The 20kg girl pushes on the 40kg boy and he sails away at 1.0m/s. What happens to the girl?
asked by Anonymous 
physics
An object is dropped from a cliff and reaches a velocity of 47.5 m/s at the time of impact. a) How high is the cliff? b)How long did it take to hit the river below?
asked by emily 
physics
A metal sphere has a charge of +6.4 C. What is the net charge after 4.1 x 1013 electrons have been placed on it?
asked by scott 
mrs SUe Algebra check
I cant figure this out 6 /2 * 88 /2 +4 i got 6/2 * 88 /2 3*8 4 24 4 = 20 is this right way? 29  (3+5) *2 +3 i got 16 is that right? 5[6+3(40/8) + (2)exponent 2 i got 9 x5 = 45 + 4 = 5 49 = 44 is that correct? [6*(24)]/(2)(9) i got 1.71
asked by marko 
geometry

optics
what is the success rate of laser eye surgery?
asked by joanne g 
geometry
complete the following proof. given: 5 2/3x=1 proff: x=6
asked by Anonymous 
MATH
AUNT ALICE GAVE EACH OF HER 3 NIECES A NUMBER OF SILVER DOLLARS EQUAL TO THEIR AGES. THE YOUNGEST FELT THAT THIS WAS UNFAIR. THEY AGREED TO REDISTRIBUTE THE MONEY. THE YOUNGEST WOULD SPLIT HALF HER SILVER DOLLARS EVENLY WITH HER SISTERS.THE MIDDLE SISTER
asked by mike 
trig
Find the exact value by using a halfangle identity. cos 22.5 degrees
asked by Omar 
Chemistry
If 7 mL of water is added to 3 mL of a 0.50 M KOH solution, the concentration of KOH is changed to? I am not sure how to go about doing this. Please help, thank you!!! Would I do (7)(3) / 0.50?
asked by Hannah 
Physic
How long would it take a laser beam to go to the Moon and back if the distance to the Moon is 3.8 x 108 m? I know that Velocity of light is 3x10^8 m/s
asked by Michelle 
Physic
Assuming no air resistance, how long does it take a penny to fall if it was dropped from the CN Tower (553 m)? Acceleration due to gravity is 9.8 m/s2.
asked by Anonymous 
Physic
Assuming no air resistance, how long does it take a penny to fall if it was thrown down with an initial velocity of 5.0 m/s from the CN Tower (553 m)?
asked by Anonymous 
Mathematics
Images on a computer can be stored many ways to account for quality and space issues. One of the factors we can adjust is colour depth. Colour depth determines the number of bits we use for each pixel of an image. The pixels are the small dots that make up
asked by Tanveer 
Math
Find the volume of steel required to make the beam B=108cm2 Length is 80cm
asked by Colby 
math
Read the following scenario, and formulate the response you might give the parent; share your response, and explain your reasoning: A new math teacher at your school is questioning your use of manipulatives in the classroom. They think using manipulatives
asked by missy 
physics
Let the radius oh a circular segment be 110 m, the mass of the car 1508 kg, and the coefficient of the static friction between the road and tire 0.9. Find the magnitude of the normal force N which the road evers on the car at the optional speed (the
asked by Kyra 
math 5
The date of the first Friday in November can be represented by thevariable F. Write an expression using F for each of the following dates in November. A. the first Tuesday B.the first Saturday C. the second Friday D.the third Friday
asked by nelia 
Math Middle School
I just found the answer tonight that you posted for us last night. Ms. Sue informed me. THANK YOU VERY MUCH!!
asked by Thank you Reiny !!!!! 
Math Middle School
I was not able to find the posted answer at first. We have it now.
asked by Ms. Sue (Thanks) 
Can someone help me please? MATH
Identify the sampling technique used to obtain this sample: Each person boarding a plane is asked to flip a coin; those showing “tails” have their luggage searched.
asked by Jen 
Science
A football player has to push a blocking sled the length of a football field. What are two ways the workload for the football player could be increased?
asked by Sierra 
psychology
what are the four goals of psychology and one example for each?
asked by philip 
MATH HELPPPP
3b+7=2 14+h/5=2 h/5=fraction m/8+4=16 m/8=fraction 3x1=8 35=3+5x 3+m/3=12 m/3=fraction x4=20 5=z3
asked by KATIE 
Physics....
A spacewalking astronaut with a mass of 78 kg pushes off a 540 kg satellite, exerting a 125 N force for the 0.5 seconds it takes him to straighten his arms. How far apart are the astronaut and satellite after 60 seconds?
asked by Me 
business
Customers arrive at Paul Harrold¡¯s styling shop at a rate of 3 per hour, distributed in a Poisson fashion. Paul a perform haircuts at a rate of 5 per hour, distributed exponentially. a) Find the average number of customers waiting for haircuts. b) Find
asked by jkjk 
trig
THE SIDE OF A RIGHTANGLED TRIANGLE ARE 3XCM,3X1CM AND 4X PLUS 1CM ,THE LAST SIDE BEING THE HYPOTHENUS FIND X.
asked by JULIE 
Math
consider 2 car loans A) 5.9% APR and 3,000 'cash back' B) 1.9% APR and no cash back both loans are repaid after 5 years pick any car to buy and calculate the total amount owed at the end of 5 yearrs. which loan is better choice. the car i have choosen in
asked by Yaneth 
Chemistry
What volume of o.410 M HNO3 would you need to neutralize 18.75mL of 0.376M Ba(OH)2? Would you do (0.410)(18.75) / 0.376? Or (0.410)(0.376) / 18.75
asked by Hannah 
Physics
Water waves in a shallow dish are 7.05 cm long. At one point the water oscillates up and down at a rate of 3.6 Hz. What is the speed of the wave? Answer in units of m/s
asked by Ashlynne 
Physics
Plus 10 for each correct response and no penalty for incorrect answers. The length of a string is 996 cm. It is held fixed at each end. The string vibrates in six sections; i.e., the string has six antinodes, and the string vibrates at 190 Hz. find the
asked by Ashlynne 
Physics
What is the period that corresponds to a frequency of 53.1 Hz? Answer in units of s
asked by Ashlynne 
physics
A string of 29 identical Christmas tree lights are connected in series to a 120 V source. The string dissipates 65 W. What is the equivalent resistance of the light string? Answer in units of Ω
asked by Anonymous 
Calculus
Find f(x+h) for f(x)= x^2  2x  3
asked by Chelsie 
algebra 1a
solve the system of equation by graphing. then classify the system. x + y=10 x  y=2
asked by Anonymous 
chemistry
What is the percent by mass concentration of KCl in a solution prepared by adding 80 grams KCl to 200 grams of water?
asked by Cristina 
Physics
An object is dropped from a cliff and reaches a velocity of 47.5 m/s at the time of impact. a) How high is the cliff? b)How long did it take to hit the river below?
asked by Jim 
Math
A blue jar has 25 marbles A red jar has 53 marbles .Which shows how to compare the number of marbles?
asked by Mary 
chemistry
mole creative assignment RAFT writing my raft is that i am mole, i am writing to periodic table, the rap song is a form will i take and explain how to find molar mass. using theese things i have to write half page paragraph but i don't know how start my
asked by anmol 
Organic Chemistry
What is the mechanism of action between between benzoic acid (C6H5COOH) and sodium bicarbonate (NaHCO3)? I need to know where the electrons go in the acidbase reaction.
asked by BOB 
Science (Chemistry
Write the relationship between the rate of disapperance of H2C2O4 (aq) and the rate of apperance on Mn ^2+ (aq) for the reaction represented by the following equation. 2MnO4^(aq)+ 5H2C2O4 (aq)+6H3)^+(aq) >10CO2(g)+2Mn^2+ (aq)+14H2) (l)
asked by Asley 
Physics
A 5.0 kg wooden block is placed on an adjustable inclined plane. (For this problem, μs is approximately 0.55 and μk is approximately 0.25) a) What is the angle of incline above which the block will start to slide down the plane? b) At what angle of
asked by Yuki 
Organic Chemistry
What is the mechanism of action between sodium benzoate (NaC6H5COO) and hydrochloric acid (HCl)? I need to know where the electrons go in this reaction.
asked by BOB 
Science (Chemistry
Use the experimental data below to determine the order of the reaction with respect to [Cr(NH3)5Cl]^2+(aq)+OH^(aq)>[Cr(NH3)5(OH)]^2+(aq) +Cl^(aq) You must show your work for any calculations and/or sketch or include a printed graph showing how the
asked by Asley 
Chemistry
Rank the carboncarbon bonds in order of decreasing bond length. Rank carboncarbon bonds from highest bond length to lowest. To rank bonds as equivalent, overlap them. 1,2,3
asked by Caitlin 
english
Okay so there is a non profit organization called Heifer. This group sends animals to 3rd world countries. It teaches people to raise animals on their own for food. One stipulation to receiving the animal is you have to give two of it's offspring to
asked by mark 
Physics
The coefficient of kinetic friction between a suitcase and the floor is 2.14. If the suitcase has a mass of 71.5 kg, how far can it be pushed across the level floor with 570 J of work?
asked by kidincoll3ge 
Physics
Water skiers often ride to one side of the center line of a boat, as shown in the figure. In this case, the ski boat is traveling at 15 m/s and the tension in the rope is 90 N. If the boat does 3500 J of work on the skier in 42.4 m, what is the angle θ
asked by kidincoll3ge 
arithmetic
THE TOTAL AGE OF GROUP OF PARENTS IS 342.A NEW PARENT AGED 48 JOINS THE GROUP AND THE AVERAGE RISES BY 1. WHAT IS THE ORIGINAL AVERAGE.
asked by JULIE 
Chemistry
a titration experiment 20 mL solution of hydrochloric acid required 15.2mL of a .879 M barium hydroxide solution. What was the molar concentration of the HCl solution?
asked by Chris 
slu
what are critical points for the function g(x)=36x9tanx
asked by autleigh 
physics
A mass m = 4 kg hangs on the end of a massless rope L = 2.02 m long. The pendulum is held horizontal and released from rest. 1)How fast is the mass moving at the bottom of its path? 2)What is the magnitude of the tension in the string at the bottom of the
asked by a 
physics
A mass m = 73 kg slides on a frictionless track that has a drop, followed by a looptheloop with radius R = 17.9 m and finally a flat straight section at the same height as the center of the loop (17.9 m off the ground). Since the mass would not make it
asked by a 
physics
A block with mass m = 14 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4545 N/m after being compressed a distance x1 = 0.515 m from the spring’s unstretched length. The floor is frictionless except for a rough
asked by a 
Math
How to convert 215% into a fraction. Can anyone help
asked by Leslie 
college algebra
U is jointly proportional to V and W. Let k be the constant proportionality. If U = 4 when V = 8 and W = 6, find the value of k
asked by cool 
C
number of moles of NaOH required to titrate 38.05mL of a 1.500 M H3PO4 solution
asked by Nick