Questions Asked on
October 6, 2010

8th grade
what do you call someone who cant turn pancakes?
asked by ben 
Math
Betsy, a recent retiree, requires $6,000 per year in extra income. She has $60,000 to invest and can invest in Brated bonds paying 13% per year or in a certificate of deposit (CD) paying 3% per year. How much money should be invested in each to realize
asked by Lisa 
science physics
Two locomotives approach each other on parallel tracks. Each has a speed of v = 95 km/h with respect to the ground. If they are initially d = 7.5 km apart, how long will it be before they reach each other?
asked by julie 
Gen Chem 1
A tanker truck carrying 2.01×10^3kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuic acid is 95.0% H2SO4 by mass and has a density of 1.84g/L. Sodium Carbonate (Na2CO3)is used to neutralize the the sulfuric acid spill. How
asked by Rachel 
Chemistry
CO+H2O CO2+H2 kp=0.0611 atm @2000K A reaction mixture initially contains a CO partial pressure of 1334 torr and H2O partial pressure of 1778 torr at 2000K. Whats the partial pressure of CO2 and H2? I got 381 torr for both, but its not correct.
asked by Anonymous 
Physics
An object is being acted upon by three forces and moves with a constant velocity. One force is 60N along the xaxis, the second force is 75N along a direction making a counterclockwise angle of 150 degrees with the xaxis. What is the direction of the
asked by Amanda 
Chemistry
I found the following procedure to prepare starch indicator solution on a website: To prepare starch indicator solution, add 1 gram of starch (either corn or potato) into 10 mL of distilled water, shake well, and pour into 100 mL of boiling, distilled
asked by annie 
chemistry
part B. would you expect the emissions to vary if metal flourides were used rather than metal chlorides?
asked by JC 
math
points a,b,c,and d lie on a straight line in the given order. AC = 25 cm and BD = 46 cm. The ratio of length CD to AB is 5/2. Find the length of line segment BC in cm. sorry miss the CD part
asked by jani 
Physics
For this problem, ignore air resistance. You are to fire a rifle that shoots a particular bullet at 460 m/s at a target that is 45.7 m away and level with the rifle. Assuming that the acceleration due to gravity is 9.80 m/s², how high above the target
asked by Steven 
Science
A student heats 4.00 g of a blue compound, which reacts completely to produce 2.56 g of a white compound and an unknown amount of colorless gas. What is the mass of this gas?
asked by Wyeth 
Physics
A 20 g mass is attached to a 120 cm long string. The tension in the string is measured to be .200N. What is the angle. l\ l \ l \ l \ l o l Sorry crappy picture, but the circle is the mass and the diagonal lines represent the string the mass is attached
asked by Amanda 
math
my number is a multiple of 5, but doesnt end in 5, the prime factorization of my number is a string three numbers, two of the numbers in the prime factorization are the same, my number is bigger than the seventh square number
asked by Anonymous 
US History
The question is "How might Juan Cabrillo's explorations affect later settlements in CA?" In the book there's only a little sentence talking about him.. "Cabrillo sailed 1,200 miles along the coast of what is now California. Cabrillo failed to find wealth,
asked by katherine 
ap chemistry
A mixture contains only NaCl and Fe(NO3)3. A .456 gram sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is dried and filtered, and its mass is determined to be .107 g. The mass
asked by kelly 
Chemistry
Solutions of silver nitrate and sodium chromate are mixed. What is the net ionic equation? I got: 2Ag(aq) + CrO42(aq) > Ag2CrO4(s) is that right?
asked by Sara 
chemistry/thermochem
The bond enthalpy of F2(g) is 156.9 kJ/mol. Calculate ÄH°f for F(g). 1 kJ/mol
asked by myles 
Physics
An airplane flies due north at 250 km/h relative to the air. There is a wind blowing at 60 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?
asked by Preston 
Physics
A merrygoround is at rest before a child pushes it so that it rotates with a constant angular acceleration for 38.0 s. When the child stops pushing, the merrygoround is rotating at 1.20 rad/s. How many revolutions did the child make around the
asked by Gracie 
chem
Po218 is an alpha emitter with a halflife of 3.0 minutes. If a sample contains 56 mg of Po218, how many alpha emissions would occur in 6.0 minutes? I got 2.4e20 but it said it was wrong. I did what my teacher showed us to do. My work: 86(i got this by
asked by sara 
physics
An airplane has a velocity of 400 km/h relative to the wind. At the same time, a wind blows northward with a speed of 75 km/h relative to earth. Find the direction that the airplane must head in order to move in an easterly direction relative to earth.
asked by adz 
3rd grade
sketch and label all possible rectangles with a perimeter of 30cm and sides whose lengths are whole numbers
asked by Bruna 
math
could you use only the millions period to order 462,409,524, 463,409,524 and 463,562,391
asked by Amari 
physics
A particle that hangs from a spring oscillates with an angular frequency ω. The springparticle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car
asked by flame 
Physics
A circus performer juggling while standing on a platform 15.0m high tosses a ball directly upward into the air at a speed of 2.0 m/s. If it leaves his hand 0.5 m above the platform, what is the ball's maximum altitude? If the juggler misses the ball, at
asked by Sammie 
chemistry
the molar mass of a newly synthesized jluorocarbon was measured in a gas microbalance, This device consists of a gkass bulb forming one end of a beam, the whole surrouned by a closed container. The beam is pivoted and the balance point is attained by
asked by jack 
chemistry
Calculate the heat released when 3.10 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride
asked by Tits magee 
physics
Romeo is tossing pebbles at Juliet's window and wants the pebbles to hit the window gently, with only a horizontal component to their velocity, as they hit the window. He is standing at the edge of a rose garden 4.5m below her window and 5.0m from the base
asked by Cristina 
Chemistry
I did a lab for Organic Chemistry I did a simple distillation for an unknown and found that it boiled at 76 degrees. I also found out that the unknown was ethanol since we knew what the 4 possibilities were and mine was closest to ethanol. I also did a
asked by Omar 
Writeacher, Please Help
The teacher said we had to include quotes from the story, so I included them and describes Katherine in every way I could. I describes her being ambarrased, selfish, etc. I don't know what else to add, could you please offer some help, thanks. In the
asked by Sara 
Biochemistry
Calculate the free energy of hydrolysis of ATP, ADP, Pi concentrations are 3.4, 1.3, and 4.8 mM respectively. (ATP hydrolysis has delta G=  kJ/mol)
asked by Help Pleasssssssse!!! 
chemistry
calculate the amount of solid NH4Cl to add to 50 mL of 1 M ammonia to form a mixture that has a pH of 9 assume no volume change in the solution
asked by maycee 
chemistry
Calculate the heat released when 3.10 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride. 1 kJ
asked by mylles 
science
how do you find the electronegativity of Ethanol (C2H5OH)?
asked by gabrielle 
Science
A horse with a force of 50 N pulls a cart of wood a distance of 10 m. Calculate the amount of work done.
asked by George perez 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book
asked by Rishi 
Calculus
A kicker is setting up for a field goal. The goal is 120 feet away and 10 feet high. The kicker can give an initial speed of 75 ft/s to the ball. What range of angles of elevation are possible to kick the ball so it passes over the goal?
asked by Dean 
math
A firefighter stood on the middle rungs of a ladder ,spraying water on a burning house. He then climbed up 6 rungs before the heat of the flames caused him to come down 10 rungs.After some minutes he was able to climb 18 rungs to the very top of ladder
asked by Thanh 
AP Chemistry
how do you balance a redox equation like: Bi(NO3)3 + Al + NaOH = Bi + NH3 + NaAlO2 ??
asked by Nicole 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book
asked by Rishi 
physics
a train moving at a constant speed of 100km/h travels east for 40 minutes..then 30 degree east of north for 20 minutes...and finally west for 30 minutes..what's the trains average velocity for the trip at which direction?
asked by Anonymous 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book
asked by Rishi 
Chem
What is the correct net ionic equation for the following set of reactants? Ba(OH)2(aq)+H2SO4(aq)>2H2O(l)+BaSO4 I keep getting the answer as 2OH^ + 2H^+ > 2H2O(l) but it counts it wrong.
asked by Kaylee 
chemistry
Determine the mass in grams of 2.56*10^24 atoms in Li
asked by Aundrea 
Chemistry
An enzymatic hydrolysis of fructose was allowed to proceed to equilibrium at 25 degrees C. The original concentration of fructose1p was .2 M, but when the system had reached equlibrium the concentration of fructose 1p was only 6.52 * 10 5 M. Calculate
asked by Confused 
Chem
Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate. I know the equation is AgNO3(aq)+NaCl(aq)>NaNO3(aq)+AgCl(s) Is Ag^+(aq)+ Cl^(aq)>AgCl(s) right?
asked by Kaylee 
math
The population of bacteria in one cubic centimeter of the blood of a sick person has been modeled by the function P(t) = 115 t(0.88^t) where t is the time, in days, since the person became ill. Estimate how fast the population is changing 14 days after the
asked by lin 
physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 26 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward
asked by ZAC 
Math 2nd grade
It is greater than 7 tens and less than 8 tens. the number has 4 ones. write the number word
asked by Rita 
Chemistry
How would I determine the electronegativity of Ethanol?
asked by Jennifer 
Physics
A boat is rowed directly upriver at a speed of 2.4 m/s relative to the water. Viewers on the shore see that the boat is moving at only 0.6 m/s relative to the shore (heading upriver). What is the speed of the river?
asked by Preston 
2nd grade
question: I have fewer ones than tens. The value of my tens is 30. What two numbers can I be?
asked by tammy 
chemistry
calculate the volume of .1M HCl that is required to react with 50 mL of .1M ammonia to form a mixture that has pH 9
asked by maycee 
chem
How many grams of CH3COOH are needed to make 4.2 liters of aqueous solution of pH=3.4?Be sure to back correct from equilibrium molecular acid molarity to starting molecular acid molarity.
asked by meg 
Math
Mrs. Jones had some white paint and some green paint, and a bunch of wooden cubes. Her class decided to paint the cubes by making each face either solid white or green. Juan painted his cube with all 6 faces white  Julie painted her cube solid green.
asked by Mia 
STUDY UNIT: INTERPRETING WHAT YOU READ
Except for a few pigeons, Central Park was deserted. Mist hung above the chilled grass. Patches of old snow, scattered here and there, looked like white puddles. The sun hung just above the horizon, casting red and orange streaks across lowhanging clouds.
asked by leyla 
Physics
An airplane flies due north at 145 km/h with respect to the air. There is a wind blowing at 65 km/h to the east relative to the ground. What is the plane's speed relative to the ground?
asked by Preston 
Statistics
The weight of a product is normally distributed with a standard deviation of .8 ounces. What should the average weight be if the production manager wants no more than 5% of the products to weigh more than 5.3 ounces?
asked by Beverley 
chemistry
calculate the amount of solid NH4Cl to add to 50 mL of 1 M to form a mixture that has a pH of 9 assume no volume change in the solution
asked by maycee 
Physics
A speedboat starts from rest and accelerates at +2.07 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.523 m/s2. Following this, the boat accelerates at 1.55 m/s2 for 8.00 s. What is the
asked by Emily 
algebra
If the area of a square is 9x212xy+4y2, what is the perimeter of the square in terms of x and y. *its 9x squared and 4y squared i have several problems like this on my homework if you show me how to do this one im sure i could figure out the rest
asked by Emily 
Physics
A speedboat starts from rest and accelerates at +1.94 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.515 m/s2. Following this, the boat accelerates at 1.58 m/s2 for 8.00 s. What is the
asked by Bala 
history
Where were the Jews of the Diaspora living? The Jews were living in Egypt, and other lans bordering the Mediterranean Sea. Do you think this ansewr is what my teacher is looking for? I read the chapter!
asked by Reed 
Physics..help please
A 715 N man stands in the middle of a frozen pond of radius 10.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward
asked by jake 
chemistry
Suppose you put 50mL of water in the can instead of 100mL and heated it to 40 degrees instead of 20 degrees. In what ways, if any, would this afect the results of the experiment? What would happen if you used 200mL of water and heated it only 10 degrees?
asked by Dan 
Statics for Engineers
Knowing that the coefficient of static friction between the collar and the rod is 0.35, determine the range of values of P for which equilibrium is maintained when theta = 50 degrees and M = 20 Nm. From 9th edition Beer, Johnston Vector Mechanics for
asked by Laine 
chemistry
the standard state free energy of hydrolysis of acetyl phosphat is G= 42.3 kJ/mol. Calculate the free energy change for the acetyl phosphate hydrolysis in a solution of 2mM acetate, 2 mM phospate and 3 nM acetyl phospahte.
asked by Confused 
Social Studies
Please check my answers!!! 1. According to the AntiFederalists, too strong of a national government meant a. eventual encroachment upon the sovereignty of the states. b. that a new Constitutional convention would have to convene every few years. c. that a
asked by kenji 
Chemistry
Solutions of silver nitrate and sodium chromate are mixed. What is the net ionic equation? I got: 2Ag(aq) + CrO42(aq) > Ag2CrO4(s) is that right?
asked by Sara 
math
a model of a bridge is 1 meter long and is 2.5% of the actual size of the bridge. How long is the actual bridge? i tired to do 1 x 2.5% but its 2.5 so i don't think that is correct. help please?
asked by courtney 
Physics
One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised by 31oC. Determine the change in internal energy when, a) the water is in its liquid phase and causes an expansion of 1.0 x
asked by Andrea 
physics
how much heat is required to change 400g of ice at 20c into steam at 120c
asked by steve 
Physics  work done
A variable force F acts through a displacement d. The magnitude of the force is proportional to the displacement, so F=kd, where k is constant. a) Sketch a graph of this force against position up to position x. b) According to the equation, what is the
asked by Shaila 
bus stats
60% of households have internet, what is the probability that 3 randomly selected households will have internet?
asked by Michelle 
geography
Heyyyyy, Where was the eroded material from the Canadian shield deposited and what did this material become? THANKS SO MUCH TO ALL!! :)
asked by I NEED HELP NOW!!:) 
chemistry
A sample of solid KCl (potassium chloride) weighing 0.500 g is mixed with an unweighed sample of solid MgCl2 (magnesium chloride) and the mixture is then completely dissolved in water to form a clear solution. An aqueous solution of AgNO3 (silver nitrate)
asked by Anonymous 
chemistry
How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5?
asked by nick 
Physics..help please
A rifle with a weight of 35 N fires a 4.0 g bullet with a speed of 250 m/s. (a) Find the recoil speed of the rifle. ___m/s (b) If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. ___m/s
asked by jake 
Intermediate Algebra(Math)
Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should be used to make a 50lb mixture that sells for $7.40 per pound? So far I have, this: 6.50x + 8 (50  x) = 7.50 (50) 6.50x + 400 
asked by Lyri 
Chemistry 12
Hello fellow comrades, I was assigned the sulphur clock reaction lab and I'm a tad bit confused by it. Anyway, here's the lab procedure: 1. take 5 test tubes, labeled a,b,c,d and e. accurately measure out 10.0 ml of .20M sodium thiosulphate in test tube A
asked by TaeYeon 
Science
How sediments,fossil, and ice core record Earth's geologic history? It record Earth's geologic history by giving scientist an idea of when certain climates or events happen.(Is this a good answer?) Thanks
asked by Shadow 
chemistry
Calculate the mass percent composition of iron for the second one of these iron ores. fe2o3 fe3o4
asked by royalty 
Intermediate Algebra (Math)
Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should be used to make a 50lb mixture that sells for $7.40 per pound? So far I have, this: 6.50x + 8 (50  x) = 7.40 (50) 6.50x + 400 
asked by Lyri 
Math
Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is ten years less than five times Nicole's age, ,find the age of each. Write a verbal model!
asked by jj 
math
Place six coins on the table in the arrangement shown in the first row below... Start like this...head tales head tales head tales Your task is to produce the second arrangement shown by flipping coins according to thsi rule: you must flip two adjacent
asked by Katherine 
calculus
a woman on a dock is using a rope to pull in a canoe. the rope is pulled at the rate of 2 ft/sec, 3ft above the point level with the connection of the rope to the canoe. How fast is the canoe approaching the dock when the length of the rope from her hands
asked by Joshie 
chemistry
Many analytical instruments require liquid nitrogen. While filling an instrument with liquid nitrogen, an analytical chemist slips and spills the contents of the dewer, 25L, onto the floor. Since the boiling point of liquid nitrogen at 1atm is 77.4 K, all
asked by Missy 
CHEM 111O2
C57H104O6(l)+O2(g) CO2(g)+H20(g) THE COEFFICIENTS OF PEANUT COMBUSTION
asked by KILO 
calculus
Try to find the value of a such that the function f(x)=asinx+ (1/3) sin3x gets its extremum points at the point x= (π / 3). Decide if it is maximum or minimum, and find it.
asked by baby 
APC Chemistry
Please correct me if any wrong info is given Volume(cm3)Area (cm2)Thickness (cm) .20 cm3 100 cm2 0.02 cm .28 cm3 122 cm2 0.002 cm .24 cm3 144 cm2 0.016 cm .41 cm3 225 cm2 0.0182 cm If you had used a very crude balance that allowed only one significant
asked by Anonymous 
physics
At a construction site a pipe wrench struck the ground with a speed of 45 m/s. (a) From what height was it inadvertently dropped? (b) How long was it falling?
asked by monnie 
physics
an electric sign weighing 200 newtons is supported by two slanting cables. each cable is attached to the same point of the sign and makes a 45 degree angle with the horizontal. what is the component of the force exerted by the sign along each of its
asked by Christina 
physics
A skier is gliding along at on horizontal, frictionless snow. He suddenly starts down a incline. His speed at the bottom is . What is the length of the incline? How long does it take him to reach the bottom?
asked by Alex 
algebra
A triangle has side lengths of 5 inches, 12 inches, and 15 inches. Every dimension is multiplied by 1/5 to form a new triangle. How is the ratio of the perimeters related to the ratio of corresponding sides?
asked by Anonymous 
calculus
gas is pumped into a spherical balloon at the rate of 1 cubic feet per minute. How fast is the diameter of the balloon increasing when the balloo0n contains 36 cubic feet of gas?
asked by Joshie 
Physics
An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous speed at the end of 10.0 s of flight? What is its average speed up to that moment? How high has it risen? What is its instantaneous
asked by jake 
analogies
dollar:cent;meter:_________
asked by jaylen 
chemistry
If the initial pressure of H2S(g) is 7.404 atm, calculate the % decomposition of H2S(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1132 °C is 0.0265. The initial pressure of the reaction products is 0
asked by Anonymous 
Physics  gravitational potential energy
When developing the equation for gravitational potential energy, why is it necessary to assume that the mass is rising at a constant speed?
asked by Shaila 
Physics
You are driving to the grocery store at 14.8 m/s. You are 140.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.440 s and that your car brakes with constant acceleration. You are 133 m from the intersection when
asked by Emily 
Physics
A golf club contacts a ball for 0.15 s at angle to horizontal and the ball strikes ground distance from fairway. Initial speed 25 m/s and angle of projection is 15 degrees Calculate time between 1.ball leaving club and when it first touches ground 2.range
asked by LynAnne 
physics
A block of mass 39 kg lies on an inclined plane, as shown. The horizontal and vertical supports for the plane have lengths of 36 m and 15 m, respectively, and the coefficient of kinetic friction between the plane and the block is 0.3. The magnitude of the
asked by christine 
Chemistry
Phenylcarbinol is used in nasal sprays as a preseriative. A solution of 0.52g of the compound in 25.0g of water has a melting point of 0.36C. What is the molar mass of phenylcarbinol?
asked by Tara 
Math
Determine whether the following statements are always,sometime, or never true.Explain 1.Three points determine a plane. 2.The intersection of two planes can be a point. 1.Never true, the three points must be noncollinear. 2.Never true, the intersection of
asked by Shadow 
Physics
A bag of sand dropped by a wouldbe assassin from the roof of a building just misses Tough Tony, a gangster 2m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.
asked by Connie 
I NEED HELP REALLY BAD!
ok so your sister buys a pencil as .39 cents. And a notebook (1) for 1.19$. the total cost was 3.92$. how many pencils did she buy? show work, but i don't know how. our teacher help us with word prblems.
asked by May 
economics
explain how the wage can adjust to balance the supply and demand for labor while simultaneously equaling the value of the marginal product of labor
asked by chris 
chemistry
why should you never mix bleach with any cleaner or other household product which may contain acid?
asked by Anonymous 
physics
A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make his trip, what is his velocity? What is his speed?
asked by Justin 
physics
A descending elevator of mass 670 kg is uniformly decelerated to rest over a distance of6 m by a cable in which the tension is 8683 N.The acceleration due to gravity is 9.8 m/s2.Calculate the speed vi of the elevator at the beginning of the 6 m descent.
asked by christine 
chem
why do different compound have different colours in their visible emissions?
asked by JC 
college
A 26 loudspeaker is suspended 3.0 below the ceiling by two cables that are each 40 from vertical. What is the tension in the cables? help please!
asked by Lance 
geometry
Emma is installing a new tile floor. Each tile measures 12 inches by 12 inches. The room in which she is installing the tiles measures 14 feet by 10 feet. If each tile costs $1.25, how much will it cost Emma to complete her project?
asked by keisha 
Chemistry
A sample of natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.60L of the mixture? Assume ideal gas behavior
asked by Missy 
health
Which organization would you call if you were involved in a natural disaster?
asked by jazz 
Physics
Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 85.0 m and the coefficient of friction is 0.38?
asked by Preston 
Chemistry
I need help calculating the partial pressure of H2 using the following information 0.028 g Mg with excess HCl which produced 31.0 mL of H2 gas. The gas was collected by water displacement in a 22 degrees Celsius water bath. The pressure was 746 mmHg.
asked by Amanda 
Chemistry
How many milliliters of 0.230 M Na2S2O3 solution are needed to titrate 2.349 g of I2 according to the equation below? I2(aq)+2S2O3^2(aq)>S4O6^2(aq)+2I^1(aq)
asked by Drew 
chemistry
the boiling point of water at 735mmHg is 99.073 degrees celcius. What mass of NaCl should be added to 3.11kg water to increase the boiling point to 100.000 degrees celcius? Kb for water = 0.510 K Kg mol1
asked by Kell 
physics
A 1.50 multiplied by 103 kg car starts from rest and accelerates uniformly to 19.9 m/s in 11.6 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. 1 W (b) Find the instantaneous
asked by bk 
physics
If there were no air drag, how fast would drops fall from a cloud 2.4 kilometer above the Earth's surface? answer in m/s.
asked by confused 
Algebra
Help pleaseI'm doing something wrong Solve 8x^2 + 6x + 5 = 0 I'm doing square roots and all the steps but it's not working out I come up with 0.38 + 0.5 and 0.38  0.5 But it's not right when I go to put it back in. Could you please show the
asked by Sandra 
Management (open to everyone)
My ideas are after the question. Please add to them or comment. Assume that you represent the top administrators of a large university with 15,000 students. Over the past three years there have been an increasing number of applicants to the school.
asked by Mical 
PHYSICS HELP!
A 120kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the floor is frictionless, and for the next 17 m the coefficient of friction is 0.34. What is the final speed of the crate?
asked by Leila 
Physics
An ideal gas in a rigid container (constant volume) has its pressure cut in half slowly. In the process, 265 kJ of heat left the gas. (a) How much work was done during the process? (b) What was the change in internal energy of the gas during this process?
asked by Andrea 
PhysicsJust a clarification
I have a question? What does hf = hi+Vivertical stand for? I haven't seen hf or hi or Vivertical yet in classI just started a few weeks ago. Bob Pursley answered a question but I don't know what the abbreviations mean. Thank you for the direction
asked by LynAnne 
Physics
A weight of 50.0 N is hung from the center of a stretched horizontal wire 10.0 meters long. It causes the wire to say 1.00m at its center. What is the force exerted by each half of the wire in supporting the weight?
asked by Christina 
chemistry
From data below, calculate the total heat (J) needed to convert 0.298 mol of gaseous ethanol (C2H6O) at 401°C and 1 atm to liquid ethanol at 25.0°C and 1 atm.
asked by myles 
physics
One kilogram of water vapor at 200 kPa fills one side of a partitioned chamber. The right side is twice the volume of the left and is initially evacuated. Determine the pressure of the water after the partition has been removed and enough heat has been
asked by sandhya 
Physics
Water flows approx. 0 over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.
asked by Rick 
calculus
For the function f(x)= (√1−x) / ( √1+x) find: a. the regions of increase and decrease, b. the regions of concave up/down and where f(x) has an inflection point. c. The "regions" should be open intervals or the empty set ϕ
asked by baby 
Algebra
Write the polynomial function as a product of linear factors. 6x^47x^310x^2+17x6
asked by Roger 
Physics
I have 3 different questions. 1) Calculate the coefficient of kinetic friction if it takes a force of 64 Newtons to keep a 54 kilogram box of books sliding across any icy surface at a uniform speed. 2) A car weighing 14,000 Newtons rests on a 20.0 degree
asked by Dorothy 
Chemistry
If you had one gallon of concentrated hydrochloric acid (12 N) and added water to make dilute hydrochloric acid (6 N), how much dilute hydrochloric acid would you have?
asked by Jeff 
calculus
If f(x) = sec x, find f''(π/4).
asked by Sasha 
Physics
You are driving to the grocery store at 14.8 m/s. You are 140.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.440 s and that your car brakes with constant acceleration. You are 133 m from the intersection when
asked by Emily 
algebra
the number of boys is ten less than double the number of girls, if the total number of students is 38 how many boys and girls are in the class
asked by Anonymous 
Projectile Motion Physics
An Arrow directed at a stationary target is shot at an angle of E25N. The arrow hits the intended target at the same height from which it is launched, 3.0s later. Determine the distance from the archer to the target.
asked by Jason 
eakin elementary
If the 80o angle is in standard position, find two positive coterminal angles and two negative coterminal angles.
asked by tj 
physics
A bag of sand dropped by a wouldbe assassin from the roof of a building just misses Tough Tony, a gangster 2m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.
asked by alexa 
Geometry
If the measures of two complementary angles are in the ratio 1:5, the measure of the larger angle is: A)75 B)144 C)150 D)72
asked by Troy 
math
points a,b,c,and d lie on a straight line in the given order. AC = 25 cm and BD = 46 cm. The ratio of length AB is 5/2. Find the length of line segment BC in cm
asked by jani 
Biochemistry
ATP hydrolysis at pH 7.0 is accompanied by release of a hydrogen ion to the medium. if delta G note for this reactionis 30.5 kJ/mol, what is the free energy change for the same reaction with all component, including H+ at a standard state
asked by Help Pleasssssssse!!! 
chemistry
How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5? I have followed the steps for a similar problem posted;I found x to 3.16e4 mol/L but I'm having trouble converting it to grams.
asked by nick 
phy
A ball is thrown from the window of a highrise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the horizontal. The bill strikes the ground 4.4 seconds after being thrown. Find the height from which the ball was thrown.
asked by Anonymous 
Com/155
Imagine you are expected to write a threepage paper. Design an organizational and time management plan to complete this paper. Keep in mind the paper requirements are to select a topic, write a thesis, write supporting material, and include a minimum of
asked by Anonymous 
Physics
A powerboat heads due northwest at 11 m/s relative to the water across a river that flows due north at 5.9 m/s. What is the velocity (both magnitude and direction) of the motorboat relative to the shore?
asked by Preston 
calculus
an 8ft 2 by 4 is leaning against a 10ft wall. THe lower end of the 2 by 4 is pulled away from the wall at the rate of 1ft/sec. How fast is the top of the 2 by 4 moving toward the ground (a) when it is 5 ft from the ground and (b) when it is 4 ft from the
asked by Joshie 
physics
One kilogram of water vapor at 200 kPa fills one side of a partitioned chamber. The right side is twice the volume of the left and is initially evacuated. Determine the pressure of the water after the partition has been removed and enough heat has been
asked by sandhya 
Psycology
Please help me to discuss various discipline which psycology is related to.
asked by Femi Pesto. 
chemistry
A reaction is first order and it takes 324 minutes for the reaction to be 50.0% complete. How long will it take for the reaction to be 85.0% complete at the same temperature? The answer is 887 minutes but I have no idea how he got that? help
asked by csb 
math
Question part Points Submissions 1 2 3 0/1 0/1 0/1 0/2 0/2 0/2 Total 0/3 Find three consecutive even integers such that four times the middle integer is equal to the sum of the first and third integers.
asked by Anonymous 
Physics
For this problem, ignore air resistance. You are to fire a rifle that shoots a particular bullet at 460 m/s at a target that is 45.7 m away and level with the rifle. Assuming that the acceleration due to gravity is 9.80 m/s², how high above the target
asked by Steven 
AP Chemistry
How do I calculate orbital hybridization?
asked by Ana 
chemistry
when doing a flame test: the hydrated salt is overheated and the anhydrous salt thermally decompose, one product being a gas; will the reported value of x be too high, too low on the unaffected?
asked by Alix 
calculus
Show that the function f(x)=4x^3−15x^2+9x+8 satisfies the three hypotheses of Rolle’s theorem on the interval [0,3]. Then find the values of c on the interval [0,3] that are guaranteed by Rolle’s theorem. Give your answer as a set of values, e.g.,
asked by esma 
physics
A 3.0 m long, 2.2 kg rope is suspended from the ceiling. Graph the tension in the rope as a function of position along the rope, starting from the bottom.
asked by Anonymous 
Physics
A) Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G. B) What is the density of the sun ? (The sun's radius is 6.96×108 m). Notice how it compares with the
asked by Jordan 
calculus
find h'(2) given that f(2) = 3, g(2) = 4, f'(2)= 2 and g'(2)= 7. A. h(x) = 5f(x)  4g(x) B. h(x) = f(x)g(x) C. h(x) = f(x)/g(x) D. h(x) = g(x)/ 1+ f(x)
asked by Sasha 
Math(Please check answers)
These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of
asked by Hannah 
minum value
Find the minimum value for the slope of the tangent to the curve of f(x)=x5+x32x
asked by nazaliah 
Math
I need help in solving this: Problem #1 For f(x)=6x3+10 find f(4) and f(4) Problem #2 For g(x)=205x2 find f(1) and f(1)
asked by Anonymous 
college
200 to 300word response addressing the following questions: o What everyday changes, if any, might you make to increase the amount of energy expended in your daytoday activities? o What types and amounts of exercise would work best for you? o Can the
asked by sandberg 
biology
why is the process of mitosis and meiosis both important to living organism?
asked by susan marshall 
Statistics
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?
asked by Theresa 
i need to make my own proverb
for english class i have to come up with my own proverb. So. i have this idea in my head but im not sure how to say it. The meaning of the proverb is like "you have to work to get things done" so right now i have "A feild never plowed itself" But.. that
asked by Anonymous 
Algebra
Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should be used to make a 50lb mixture that sells for $7.40 per pound?
asked by Lyri 
ochem
A student dissolved 30 mg of a crude unknown in 2 ml of 95% ethanol at room temperature. After chilling in an ice bath and washing crystal with small amount of icecold ethanol, she recovered 5mg. Why was the recovery so low?
asked by Anonymous 
math 5th grade
(17A)SQUARED=2209 SOLVE FOR A
asked by kim 
chemistry
the boiling point of diphenyl ether is 259 degrees C. It dissolves many nonpolar compounds but it is a poor solvent for crystallization.Why?
asked by Anonymous 
algebra
If 8x+16=48 then what does x equal?
asked by Aubrey 
statistics
Assuming that the population variances are equal for Male and Female GPA’s, test the following sample data to see if Male and Female PhD candidate GPA’s (Means) are equal. Conduct a twotail hypothesis test at á =.01 to determine whether the sample
asked by Anonymous 
Spanish
Use the correct form of the verb gustar and the appropriate indirect object pronoun to complete the following dialogue between a babysitter and a difficult child. Cultura ************************************** Shakira Isabel Mebarak Ripoll is a Colombian
asked by Christopher 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
asked by Alyssa 
Writing Sentences and Paragraphs
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe
asked by Hyuna 
linear algebra
these equation are certain to have the solution x=y=0 for which values of c is there a whole line of solutions? cx+2y=0 2x+ay=0
asked by chad 
biology
names and defines the levels of organization that an ecologist studies identifies the level that you would choose to study if you were an ecologist; 3) describes the method or methods you would use to study this level; and 4) gives a reason for your choice
asked by Anonymous 
CHEM 111O2
C57H104O6(l)+O2(g) CO2(g)+H20(g)
asked by KILO 
math
A population of primates in a certain jungle is doubling each year. Describe how the population increases in size as a function of time. Give some example values for this population over time. Is this a linear or exponential relationship?
asked by Anonymous 
calculus
Specify the region over which the following function f(x) is increasing and the region where it is decreasing. f(x)= √x Your answer should be either open intervals or the empty set ϕ.
asked by ana. 
geometry
Solve for the value of y and the measures of angles 1 and 3. m angle 1=(10y+2) m angle 3=(12y8)
asked by sarah 
physics
A man lifts a 2.7 kg stone vertically with his hand at a constant upward acceleration of 1.2 m/s2. What is the magnitude of the total force of the stone on the man's hand?
asked by Kacy 
calculus
Given f(x)= (2x^2 −5x+2) / ( 3x^2 −10x+3) a. find the derivative f ′ (x) , b. determine the open intervals of increase of f(x) c. determine the open intervals of decrease of f(x) d. determine the local maximum. Give your answer as (x,y)
asked by baby 
calculus
Given that x3axy+3ay2=3a3 Find the equations for the tangent and normal lines at point (a,a)
asked by mei peng 
US History
Need help with this Americans remain an extremely mobile people, with most families moving several times in their lifetime. Write an essay in which you describe at least two similarities and two differences between American migration today and migration
asked by mysterychicken 
College Physics
The drawing shows a version of the looptheloop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?
asked by Dawn 
posting again! please help!! physics
A skateboarder, starting from rest, rolls down a 14.0m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to
asked by michelle 
Physics
A sprinter explodes out of the starting block with an acceleration of +2.79 m/s2 , which she sustains for 1.65 s. Then her acceleration drops to zero for the rest of the race. What is her velocity at t = 1.65 s and at the end of the race?
asked by Bala 
Physics
If the force of friction is constant, prove that the stopping distance of a car on a level road varies directly with the square of the initial speed.
asked by Shaila 
math
Please need help on this Create an equation of a nonlinear function and provide two inputs for your classmates to evaluate. f(x)=10²+5 find f(2) and f(2)
asked by Anonymous 
algebra
Elliot is 5 times as old as Sid. Ten years from now, Elliot will be at least 3 times as old as Sid will be then. At least how old is each person now?
asked by Emily 
english
What is the adverb and then what is the adjective the adverb modifies in this sentence. In spite of her defeat, she was not sad at all? Is is not sad?
asked by hunter 
Physics
Consider an inefficient engine which draws 200 J of heat from a hot reservoir at 100oC, converts 48 J to work, and rejects 152 J to a cold reservoir at 0oC. Theoretically, how much maximum work can be produced if the efficiency of the engine is maximized?
asked by Andrea 
Chemistry
How many milliliters of 8.40×10^2M Ba(OH)2(aq) are required to titrate 48.65mL of 5.26×10^2M HNO3?
asked by Kaylee 
english
List words that give you trouble when writing. If you don’t have any, list words that challenge your spelling ability.
asked by Anonymous 
CHEMISTRY
I am having trouble understanding how to come up with the products for single replacement reactions. Can any one check my work and tell me what i am doing, and also point out if i am missing any rules. 1. KI + Cl2 > 2. Fe + HCl > 3. Zn + HNO3 >
asked by Help asap!! plz 
french
unscramble please to form sentences ne/passe/elles/ce/s'est/pas/qui/savent
asked by rona 
history
What books are collected in the Hebrew? The Torah, the Prophets, and Writings that were added later. Is this accurate?
asked by Reed 
English
Can you please check if everything is OK in the following sentences? Thank you. 1) About fifty miles from Kurtz’s station they saw a hut. When they got nearer to it, they found a massage on the firewood urging them to approach cautiously. Marlow also
asked by Franco 
Statistics
# Statistics  bobpursley, Wednesday, October 6, 2010 at 4:30pm second applet. Set mean to zero, std deviation to .8 oz check below enter shaded area .05 Notice the answer comes up 1.31 ounces. So the mean must be 5.3+1.31=6.61 Put that in for the mean,
asked by Beverley 
statistics
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?
asked by Theresa llamas 
Math(Please help)
For f(x) = 2x3 and g(x)= 2x^2 find, a) (f + g)(x) = My answer is 2x^2 + 2x  3. Is this correct? b) (f  g)(x) How would you do this? c) (f X g)(2) I do not know what to do since the 2 is there.
asked by Hannah 
physics
If a person does 80 J of work in moving a 30 \rm{kg} box over a 13 m distance on a horizontal surface, what is the minimum force required?
asked by Jon 
Chemistry
The water from a hydrated magnesium salt is driven off by heat in a closed system. If the steam generated exerts a pressure of 24.8 atm in a 2.00L container at 120 degrees C, determine the number of moles of H2O driven from the compound.
asked by Missy 
SOCIAL STUDY
I'M A TRIANGLE MY PERIMETER IS 96 CENTIMETERS THE SIDES ARE 34 CENTIMETERS AND 25 CENTMETERS LONG HOW LONG IS IS MY THIRD SIDE
asked by LANAH 
ENGLISH!!
What should i write about for the topic: responsibility for watching over your little brother....also explain the various ways you kept him safe...etc. and how you felt responsible for that person. Please give me lots of ideas about what to write for that
asked by Happy FacePLZ HELP!! 
Algebra
What is the inverse of y = 4x  2? Is it y = 1/4x  1/2 If that is wrong, can you direct me towards the right answer or how to find it Thank you
asked by Ricky 
Physics
You are driving to the grocery store at 14.8 m/s. You are 140.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.440 s and that your car brakes with constant acceleration. You are 133 m from the intersection when
asked by Emily 
economics
P 2 3 4 5 6 7 8 9 10 11 12 13 14 QD 400 380 360 340 320 300 280 260 240 220 200 180 160 QS 40 80 120 160 200 240 280 320 360 400 440 480 520 Suppose the quota is lifted and a price ceiling of 11 is imposed. Find the new market price. How much will be
asked by Mike 
MATHS
How many minutes before 12 noon is it, if one hour ago it was three times as many minutes after 8 am? Thank you
asked by DONNA 
physics
Find the center of mass of the three mass system given that m1 1.90 kg and m2 1.30 kg Specify relative to the center of the left mass "1.00 kg "
asked by ami 
Math
Find the slope intercept form of the line with the following properties. Slope=4 containing the points (2,5) I know that slope intercept form is y=mx+b so the m is the slope which is 4 but now I get confused since they give me x any y values (2,5). Is
asked by Hannah 
Math
For f(x) = 2x3 and g(x)= 2x^2 find, a) (f + g)(x) = My answer is 2x^2 + 2x  3. Is this correct? b) (f  g)(x) How would you do this? c) (f X g)(2) I do not know what to do since the 2 is there. Determine whether the graph of the following equation is
asked by Hannah 
math
In an equilateral triangle, if the lengths of the three sides are 5x − 2, 6x − 10, and 4x + c, what are the values of x and c?
asked by hhguyghu 
language arts
First write one noun of each type below.then write as sentence using the nouns. underline all the nouns in your sentence. common and concrete__________________________________________________________. proper and concrete___________________. please help me
asked by anonymous 
geometry
The perimeter is 68. Find x,an,BC,AC.if ab is 2x+7,bc is 3x+5, and ac is 5x4
asked by chance 
Chemistry  Help
fill in the blanks __________ is matter that has 2 or more different atoms put together.
asked by Anonymous 
math
if 5 times a number is increase by 5, the result is 30.find the number. A)30 B)7 C)5 D)20
asked by Anonymous 
6th grade
A student heats 4.00 g of a blue compound, which reacts completely to produce 2.56 g of a white compound and an unknown amount of colorless gas. What is the mass of this gas?
asked by Wyeth 
finance
Return on operating assets = 25% Operating asset turnover = 5 times Operating assets = $20 million Degree of operating leverage = 4 times
asked by Anonymous 
Chemistry
What volume of 0.5 N nitric acid would be required to completely neutralize 300 ml of 1.0 N sodium hydroxide?
asked by Jeff 
Chemistry
When titrating an acid with a base, a dilute solution of the base is used. When titrating a base with an acid, a dilute solution of acid is used. Why are these titrations done with dilute solutions?
asked by Jeff 
Algebra
Can someone pleas give me an example of a nonlinear function with 2 inputs? I have to provide 5 problems for class and have no idea where to begin or how to set up the problem.
asked by Sam 
Calculus
What is the domain and range of the following function? f(x)=  sqrt(lnx+2) For the domain, I got 0
asked by Jon 
analogy
month:week:_______:month moon:lunar:sun:_________ snow:cold_______:sweet
asked by jaylen 
French
I've been given an article and some questions to answer. One of them is: "Au paragraphe deux que veulent dire les mots... a) enjeux b) nouvelle" I can't figure out what the question is asking me to do with those two words.
asked by Stuck 
physis
if someone dropped a 2.13 kg cannon ball from the 57.3 m tower of pisa, how much did gravity do on the ball
asked by mini 
chemistry
wHAT IS THE MOLALITY OF A SOLUTION MADE BY DISSOLVING 43.3 GRAMS OF SODIUM CHLORIDE?
asked by bErNaDeTtE 
chemistry
What is the relative mass ratio of 11.31g of pb and 6.64g of au when pb has 3 mols and au and 2?
asked by Anonymous 
algebra
evaluate the fraction 3x+5x6x+2x/x if x=6
asked by dessiree 
AP World History
I am suppose to write a DBQ tomorrow on the Hans and Romans. My prompt states: analyze the Han and Roman attitudes towards Imperial Power and the State.
asked by Ashley 
Maths
How must $59 be shared between Michael and Matthew so that Michael’s share is $4 less than twice Matthew’s share?
asked by Jannie 
chemistry
60.5 grams of iron at an initial temperature of 87.5 degrees celsius are added to 125 grams of water at an initial temperature of 26.7 degrees celsius. calculate the final temperature of the mixture.
asked by alexja 
calculations
convert the following times from seconds to minutes... 510 sec. 270 sec. 450 sec.
asked by Anonymous 
Composition
When writing a paragraph there should be a topic sentence and supporting points what would be the readers reactions if there was not?
asked by Anonymous 
Math
Find the slope intercept form of the line with the following properties. Slope=4 containing the points (2,5) I know that slope intercept form is y=mx+b so the m is the slope which is 4 but now I get confused since they give me x any y values (2,5). Is
asked by Hannah 
french
unscramble please to form sentences ne/passe/elles/ce/s'est/pas/qui/savent. Enfans/demande/moins de/il/aux/bruit/a/faire/de. Mois/ca/nous/des/en contact/que/fait/sommes. Pas/ils/de/ont/paniquer/lui/dit/ne. Rien/n'/a/autre/y/faire/il/d'/a
asked by rona 
English
I forgot to include these other sentences. I really hope you can have a look at them, too. 1) The jungle had awakened his desires and he didn’t have enough strength to resist them. 2)They met a Russian who traded ivory. He looked like a harlequin in his
asked by Franco 
history
Who are the Balkans and what relationship do they have with Russia or Germany or WWI?
asked by Barbie 
5th grade math
MAKE A SET OF 12 NUMBERS WITH THE FOLLOWING LANDMARKS MAX: 8 RANGE: 6 MODE: 6 MEDIAN: 5
asked by spencer 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
asked by Alyssa 
algebra 1
5p+9c+p for c
asked by John 
health
What are the limitstions of what an organizational chart communicates
asked by Nancy 
Statistics
Hi Bob, Thanks for the direction. I got so far with it on my own and became stuck. I did as you said but still have one question. Would the answer to the question be 1.31 ounces or 6.61 ounces? I feel the answer is 1.31. Thanks * Statistics  bobpursley,
asked by Beverley 
math
LPG (liquedfied petroleum gas) is stored in highly insulated spherical vessels in most oil refineries. If the inside diameter of one of these tanks is 11.4ft, find it's volume. Report your answer to the nearest onetenth of a gal use (pie)=3.14, and 1
asked by Anonymous 
PHYSICS HELP!
Water flows approx. 0 over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.
asked by Leila 
Writing Sentences and Paragraphs
ASSIGNMENT: Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your town. But you also know she
asked by Hyuna 
Math(Please check)
Find the center (h,k) and radius of the following circle. x^2 + y^2  6x  2y + 1 = 0 My answer is center= (3,1) and radius of 1. Am I correct?
asked by Hannah 
Algebra
We just started this topic and I'm confused about these exponents. Simplify [ 11d^2e^5/33d^4e^2]^2 Could you explain the steps Thanks
asked by DeAnne 
geometry
How do you use the distance formula to see if the segments on a cordinte plane are congruent?
asked by Roberto 
Physics
A golf club contacts a ball for 0.15 s at angle to horizontal and the ball strikes ground distance from fairway. Initaila speed 25 m/s and angle of projection is 15 degrees Calculate time between ball leaving club and when it first touches ground range of
asked by LynAnne 
Biology
Can someone please explain how enzymes work? I need to know the parts of one too.
asked by Ashley 
Chemistry 1151
i have been trying for a few hours now to solve this, but i missed tis day in class and my mind wont wrap around the concept. can someoneplease help?? How many moles of Neon are in a 25mL container at STP?
asked by Sydney 
math models
What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial
asked by jackie 
algebra
when dealing with corresponding proportional sides how do you figure out the following: a rectangle with 6.5m on side and 3.7m on base and the other rectangle is 4.0m base and e on side?
asked by mary 
com/155
Review pp. 517–520. Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine
asked by jackie henton 
calculus
Suppose the function f(x)=2x^3+ax^2+bx has a critical point at x=−1, for which f(−1)=−2. What is a, b?
asked by ana. 
calculus
Specify the region over which the following function f(x) is increasing and the region where it is decreasing. f(x)=(1) / x. Give your answer in open intervals.
asked by john 
PHYSIC
If a blue car drives 10km/h across the deck of an ocean liner that is traveling at 90km/h, what is the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner?
asked by ANA 
calculus
find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.
asked by Sasha 
General Psychology
what is the process of repeating information to oneself to keep it in shortterm memory
asked by Rhonda 
History
What would "stock market speculation" mean This is regarding the Great Depression
asked by Amy 
College physics
The motor of a ski boat generates an average power of 7.30 104 W when the boat is moving at a constant speed of 10 m/s. When the boat is pulling a skier at the same speed, the engine must generate an average power of 8.40 104 W. What is the tension in the
asked by Sarah 
physics
pitcher throws a ball for 1.98m. the balls mass is .145kg. what is the force on the ball by the pitcher?
asked by lee 
french
complete the following sentences withthe appropriate articles. le,la,l;,les estce que tuasdisques? etudiante parle avec le professeur
asked by v 
statistics
what percent of all students had scores less than 820
asked by laparis 
Psycology
Identify and explain various discipline psycology is related to.
asked by Femi Pesto. 
algebra
if 10+5y=77 then what is y?
asked by Aubrey 
biology
when would and organism need to undergo the process of mitosis and meiosis?
asked by susan marshall 
Algebraplease check
What is the solution for absolute value of 1 + x = 5 I think the two solutions are x = 6 and x = (4)
asked by Tanya 
calculus
Find the rate of change of the distance between the origin and a moving point on the graph y = x^2 + 8 if dx/dt = 8 centimeters per second.
asked by ale 
Math
The House of Representatives has 435 members. If a committee has a prime number of members, and that number is a factor of 435, then how many members can be on the committee?
asked by Natalie 
Math
These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of
asked by Hannah 
physics
an engine block of mass 275kg rest on a plane which is inclined at 13 degrees to the horizontal.if the plane can be tilted to a maximum angle of 21 degrees before the engine block slide due to its weight.calculate the minimum force parallel to the plane
asked by charles 
Math
hi guys! I was wondering how to do x618x2+8 divided by factor x24 I normally use synethetic division what else easier method should i use?
asked by Sabrina 
6th grade, science
Think about the energy you use every day (running, eating, ...) Where have you seen heat energy being lost? Activity.... Heat lost through
asked by Victor 
management
how can organizations allocate scarce resources
asked by patiance 
algebra
is this right? 2/3+3k/4=71/12 y=12/8
asked by Aubrey 
English 1
I have to write an essasy about "The Man to Send Rain Cloids" and "The Rules of the Game". In my essay I have to identify 3 examples of cultural differences creating conflict. For each of the 3 examples, I have to point out how it helped to create an
asked by Anonymous 
physics
A spring with a springconstant 2.2 N/cm is compressed 28 cm and released. The 4 kg mass skids down the frictional incline of heigh 43 cm and inclined at a 22 degrees angle (g = 9.8 m/s^2) The path is frictionless except for a distance of 0.9 m along the
asked by Mimi 
math
mary's ARt GAllery sells picture for $50each. She pay 20 for print and pay the sales clerk 10% as a commission. she has 5000 of monthly fixed cost as well. how many picture mary need to sell to break even.
asked by Marha Encarncion 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
asked by Alyssa 
precalculus
what is 15x^322x^2+8x
asked by ariyonia 
EnglishWriteacher
Writeacher, I tried to make my composition more sophisticated by adding varied different words instead of repetetive ones. Can you please have a look at this. I really need this by 2:00 pm. I'll appreciate all the help you can give me, thanks.
asked by Sara 
math
If you already know the mean and all her test scores but one, how can you find the missing tes score?
asked by India 
math
How do I make a math factor tree using the number 115 and make it look like a tree for real?
asked by lanette 
Chemistry
Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...
asked by Mike 
sci245
hi. please help. i need to do a presentation for weathering and erosion and i am not sure what the graphical representation means. does this mean photos or graphs? please help.
asked by amy 
social studies
whats the effect on climate for these listed below?: sun and location wind water mountain
asked by me 
science
what are centrioles
asked by Anonymous 
Bio
Given an allele frequency of o.91 for a hypothetical red allele (bead), the percentage of blue alleles residing in the heterozygotes would be? a) 89% b) 90% c) 91% d) 92% e)93% i don't even know how to approach this question
asked by kim 
math 115
dID IU do this right not sure and I thank you for helping ahead of time... 1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that
asked by Donna 
biology
names and defines the levels of organization that an ecologist studies
asked by Anonymous 
science
is a rock a compound, element, or solid?
asked by rachel 
algebra
write fur dfferent numbers for which both of there statement are true the range is 8 the mean and median are the same number
asked by Anonymous 
Algebra
How do you solve 2x^2  20 = 3x Thank you
asked by Annie 
Science
can u please help me unscramble "IRITONCF" and "LCRNEAU"
asked by Nikki 
chemistry
What are the three chemical reasons for the large negative energy of hydrolysis of phosphoric acid anhydride linkage for compounds such at ATP, ADP, AND pyrophosphate?
asked by nikki 
algebra
An equivalent expression of h+zx
asked by Melvin 
English
I tried to correct the wrong sentences myself. Please, tell me if everything is ok. 1) Then, Marlow went into the brokendown hut and found an old book about seamanship with notes written in code. 2) He came to Africa with the intention of civilizating the
asked by Franco 
algebra
If n x 2 = 28, then what does n equal
asked by allicia 
Consumer affairs and business
”.Reflect on how you would work with a client to advise them on the importance of insurance to manage risk. How would you address their reluctance to spend money on premiums when they may never file a claim? Refer to course content in your reflection (If
asked by troy 
Math
What are good examples of functions with horizontal asymptotes of 5?
asked by John 
Chemistry 1151
How many oles of Neon are in a 25mL container at STP?
asked by Sydney 
chemfollow up question to previous post
how do you calculate the molar mass?
asked by sara 
calculus
Given the function g(x)= (3x) / (2+5x^2 ) find its region of increase and decrease. Give open intervals.
asked by ana. 
MathAlgebraPlease check
What is the solution of 3 times the absolute value of x + 5
asked by Tanya 
algebra
What is the answer to 7(d+5d)  16d
asked by Jacob 
geography
was the china's one child policy successful? need opinions thank you
asked by chelsea 
Algebra1
What is the answer to 8(n)=1? I have tried to figure this out, and I can't.
asked by janet 
English
Can anyone here tell me any of the stories you used to tell your kids of your past lifes? I need to write one for English, and my mom doesn't want to tell me one. I just need examples.. or maybe you guys can give me a story I can use? ^.^ Just a story you
asked by Allyson 
geometry
In the figure below, B is the midpoint of , AB = 5x + 2, and AC = 12x – 2. What is the value of BC?
asked by Kayla 
algebra
1/6h=9
asked by emma 
physics
what force is being applied to a meteor with a mass of 500 kg as it travels at a constant velocity of 5000 meters per second?
asked by judith 
math
A 270 in pipe is cut into twp pieces. One piece is twice eight time the length of the other. Find the lengths of the pieces.
asked by Daniel 
math
3 3/4 YD= ? in A)60 B)45 C)120 D)135 i think it is d
asked by Anonymous 
Education Theory and Practice
Name and discuss factors that describe teaching as a profession.
asked by Ebenhard 
assessment of learning
When to use an identification type of test? Steps or guidelines in making an identification type of test. Thanks.
asked by klarmaesen 
biology
what would happen if Meiosis did not occur?
asked by susan marshall 
chemistry
If 2.10 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 28°C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 34°C to 57°C?
asked by ruby 
chem
My liquid boiled at 96.29 F. It is odorless and transparent. It could be water with salt. Cant be sugar inside becuse that would cause water to boil above 212F/100C. Water boils at 212F. What is my liquid?
asked by Cherry Joy 
social studies
how would you describe the location of each of the 5 regions
asked by ayiana 
Math
Jared obtained a simple interest loan for 1200 at a credit union at an annual interest rate o f 5.5%. if Jared paid $1430 to repay the loan, for how many months, was the money borrowed ? ( can you please tell me the steps. thanks )
asked by thommini 
Chemistry
Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...
asked by Mike 
math
thank you so much reny! but i was wonndering how can you factor x82x6+x5+x4x3+x+1 by x3+1 THANK YOU SOOO MUCH!
asked by Sabrina 
algebra
m=3 passing through p(3.5)
asked by james 
english
What is the complete and simple subjects for the sentence Some people like to take classes to learn new things.
asked by Anonymous 
Science
what activity does the cytoplasm do for the diatom
asked by Teri 
physical ed sports
name the six positions on a volleyball court IN SERVING ORDER(1st6th)beginning with the first player serve.
asked by Kim 
social studies
what is the defenition of grids?
asked by hippie 
chemistry
Can thermodynamic quantity, delta G, be used to predict the speed of a reaction in a living organism? Why and why not?
asked by nikki 
college statistics
In Chapter 5, Exercise 9, we studied the variability of crime rates and police expenditures in the eastern and Midwestern United States. We’ve now been asked to investigate the hypothesis that the number of crimes is related to police expenditures per
asked by jason 
Math 116
Is this correct so far...I just want to know if I am doing this.. b) The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for $200,000. She also mentions that all the available houses combined are worth $3,300,000.
asked by Donna 
AlgebraCan you please check this Reiny
Can you check this: x^3y^2/x^2y^4 I think the answer is y^6/x^5 Thanks for explaining the other problem
asked by DeAnne 
management
With increasing globalization, how can organizations allocate scarce resources? where should I look for information?
asked by patiance 
science
I am trying to figure out how to teach young students, say 3rd/4th grade the six steps of the scientific method in a simplified way they would understand...Any ideas?? Any examples/and /or sites?? Thanks, jarrad
asked by Jarrad 
psychology
Did you ever have a "déjà vu" experience?do you think they really happen to people? How do you explain such experiences? What do you think of the idea of "déjà vu"?
asked by keisha 
Chemistry 1151
what is the pressure of a 0.85 Liter sample of Helium with a mass of 0.070 grams when it is at 5 degrees Celcius?
asked by Sydney 
Math
What are 12 numbers with these landmarks maximum 8 range 6 mode 6 median 5
asked by noneofyourbeeswax 
math models
What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial
asked by jackie 
calculus
Find the minimum of the function f(x)= x^2 – ((54 ) / (x) ).
asked by john 
com/155
I received my first major credit card at the early age of eighteen. I was positively not ready for that responsibility. Shopping carelessly was not a wise decision. Within six month's, my credit was suffering tremendously. I had already reached my credit
asked by jackie henton 
Science
A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make this trip, what is his total velocity? What is his speed?
asked by Martha 
Algebra
The profit from selling x pieces of handmade jewelry can be modeled by the equation P(x)=x^2+130x3000. What is the range of profitable orders (P(x)>0)?
asked by Roger 
Algebra 115
Is this correct so far...I just want to know if I am doing this.. b) The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for $200,000. She also mentions that all the available houses combined are worth $3,300,000.
asked by Donna 
English
Can you please tell me if the following sentences are correct? 1) What happened to Robinson on his second voyage to Africa? 2) How did he manage to set himself free? Thank you.
asked by Franco 
minum distance
Find the minimum distance from the point (3,0) to y=(x)^1/2
asked by selina 
Science
whats the cause of someone bleeding from their face without a cut, bruise, pimple, nothing, the person is just bleeding constantly, why?
asked by alanaR. 
math 117
Living in or near a metropolitan area has some advantages. Entertainment opportunities are almost endless in a major city. Events occur almost every night, from sporting events to the symphony. Tickets to these events are not available long and can often
asked by Tina 
social studies
how has equal oppurtunity helped our economy?
asked by misy 
math
6+y=17
asked by emma 
science
what force is being applied to a meteor with a mass of 500 kg as it travels at a constant velocity of 5000 meters per second?
asked by judith 
Geography
How do the shores of Long Island differ from each other. The South Shore and he North Shore
asked by Dylan 
french
do you use le,la,l',les for this question? Ou,est ordinateur?
asked by valerie 
math 115
I am stuck with this problem can some let me know how to work this problem please help me The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for $200,000. She also mentions that all the available houses combined are
asked by Donna 
Science
What are the different forms of the same gene referred to as?
asked by Jim 
math 115
I am stuck with this problem can some let me know how to work this problem please help me The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for $200,000. She also mentions that all the available houses combined are
asked by Donna 
algebra
if you buy 10 pizzas and cheese pizzas cost $11, write equation giving the cost "C" in dollars as a function of the number "P" of cheese pizzas you buy
asked by Don 
math
if 15 students perfer strawberry ice cream, how many students are in norman's class
asked by kyla 
math
the lappans buy 3 large sandwich wraps to serve at a picnic. Nine people in all will be at the picnic. show 3 different ways to cut the sandwiches so that each person gets an equal share. Help please!!!
asked by Jackie 
science
is the following definition of smog correct: Smog is a mixture of smoke and fog or a noxious mixture of air pollutants that can often be seen as a haze in the air.
asked by Beauty 
English
Write a note on the characterstic features of 'Hamlet' by william shakespeare.
asked by Anonymous 
social studies
what are the texas subsections?
asked by Anonymous 
psych
what are the psychoanalytic models? How have these models been used to explain human behavior? Which models do you feel is the most effective explaining human behavior and why?
asked by diana 
12th grade
deductive reasoning
asked by kerri 
math
how to factor 9x8745x4+1296 by 9x416?? Thankyou!!
asked by Sabrina 
chem
what formula do you use to determine mass percent of water?
asked by dude 
math
If 250,148,571 is the total population what percent is 136,800,000?
asked by zane 
math
659 x 1357=1357 x n n=
asked by emma 
math
how can i drop an egg 4 feet without breaking it
asked by isabel 
science
how much force is excerted by a 25kg rock rolling down a hill at 3 meters per second per second?
asked by judith 
math
20xy=? I do not get this at all! Please HELP!
asked by renee 
English
I checked my sentences once more. I included the last sentences for you to correct. Thank you. 1) The natives loved him because he had the guns and they hadn't seen anything like them before. 2)He was looked up to by the natives because of his guns. 3)The
asked by Franco 
6th grade
I NEED EXAMPLES OF ARCHIPELAGO
asked by alex