Questions Asked on
November 24, 2010

chemistry
pls arrange the following in their order of solubility: NH3, N2 AND CO2
asked by Anonymous 
Dufferential equationPlz
C = 15*pi*(2*D*h+(3/4)*D²) + L* (94.25*D*h+35.34*D^2)/(pi*D^2*h/4) first dC/dD? second d^2C/dD^2? first dC/dh? second d^2C/dh^2
asked by Alicia 
chem
Methane is oxidized to water and carbon dioxide in a process, in which 10 % of the methane is converted to CO and 20 % is converted to formaldehyde. What is the yield of the process? How much methane do you need to produce a kg of formaldehyde? How much
asked by Anonymous 
physics
A 2.0 m wire segment carrying a current of 0.60 A oriented parallel to a uniform magnetic field of 0.50 T experiences a force of what magnitude
asked by edward 
physics
A circular coil of 30 turns and radius 7 cm is placed with its plane oriented at 90 degrees to a magnetic field of 0.1 T. the fieldis now increased at a steady rate, reaching a value of 0.7 T after 5 seconds. when emf is induced in the coil
asked by edward 
physics
A mass of 1.00kg is dropped from a height of 80cm onto a spring, of unstretched length of 20.0cm, which is resting on the floor. It comes to rest, momentarily, at a height of 10.0cm from the floor. If we can ignore friction, find the spring constant of the
asked by Trace 
Physics
A bullet of mass 45 g is shot at a speed of 220 m/s into a 5.0kg bag hanging from a string from the ceiling. The bag absorbs the bullet and begins to swing. To what maximum vertical height will it rise? Hint: Energy is not conserved as the bullet enters
asked by Sarah 
physics
At a temperature of 0° C, the mass and volume of a fluid are 742 kg and 1.10 m3. The coefficient of volume expansion is 1.36 103(° C)−1
asked by Anonymous 
Statistics
A large video rental chain recently decided to change its rental policy, allowing an unlimited return date instead of requiring that movies be returned the next day. The marketing team reasoned that this would greatly increase the popularity of their
asked by Lida 
Statistics
A popular casino in Windsor estimates that the chance that someone sitting at one of their Black Jack tables has a 0.35 probability of winning a given hand. Assume that all games played are independent. a. Isaac decides to play until his first win, and
asked by Samuel 
AP Chemistry
From the following: pure water solution of C12H22O11 (m=0.01) in water solution of NaCl (m=0.01) in water solution of CaCl2 (m=0.01) in water choose the one with the a) highest freezing point b) lowest freezing point c) highest boiling point d) lowest
asked by Anonymous 
SOCIAL
Previously, the primary means of protecting individuals was to limit government intervention in their lives. Today is the era of aggressive industrial capitalism, the government seems to be the only way to protect the individual from selfish economic
asked by Anonymous 
chemistry
For a certain reaction, Delta H(not) = 76.8 kj and delta S(not) = 217 j/k. If n =3, calculate E for the reaction at 25degrees celcius.
asked by Tara 
chemistry
For the voltaic cell Cr(s)/Cr3+(aq)//Ni+2 (aq)/Ni(s), list the reactions at the cathode, anode, and the overall net reaction.
asked by Tara 
physics
A ushaped tube, open to the air on both ends,contains mercury. Wather is poured into the left arm until the water column is 10.0 cm deep. How far upward from its initial position does the mercury in the right arm rise?
asked by nathan 
College Physics
A string that passes over a pulley has a 0.331g mass attached to one end and a 0.625g mass attached to the other end. The pulley, which is a disk of radius 9.50cm , has friction in its axle. What is the magnitude of the frictional torque that must be
asked by Ree 
math
How long in years does it take for a principal to triple in value if invested at a rate of r compounded semiannually? Give t as a function of r.
asked by Charley 
college
Which comqound boils at 77.5 degree c
asked by Ka 
Physics
A disk and a hollow spherical shell, like a basketball, are released at the same time at the top of an inclined plane. The spherical shell has a mass M and a radius R; the disk has a mass 2M and a radius 2R. If the two objects are released at rest, and the
asked by Ree 
Chemistry (URGENT)
How many Al atoms thick is the aluminum foil if it is 0.00157cm thick. 1 Al atom = 286pm Convert pm to m 286pm = 2.86*10^10m Convert m to cm 2.86*10^10m = 2.9*10^8cm Divide aluminum thickness and Al atom thickness 1.57*10^3 / 2.9*10^10 = 54138 So the
asked by John 
college
CAN YOU GIVE ME A BEST ORATORICAL PIECE ABOUT NURTURING THE YOUTHS??
asked by LEONARD 
English
1. I will be 14 years old next year. 2. I shall be 14 years old next year. 3. I am going to be 14 years old next year. 4. I intend to be 14 years old next year. (Are they the same? What is the difference between 'will' and 'be going to'?)
asked by rfvv 
English
1. I will go there. 2. I shall go there. 3. I intend to go there. (What does #1 mean? Does #1 mean #2 or #3?)
asked by rfvv 
science
A young man happens to spot an exgirlfriend he’s trying to avoid. Why does his mouth become dry? A. His cervical plexus overrides the parasympathetic stimulation for saliva production. B. His cranial nerves shut down saliva production. C. His central
asked by Anonymous 
physics
The firetruck goes around a 180°, 162 m radius circular curve. It enters the curve with a speed of 12.6 m/s and leaves the curve with a speed of 38.8 m/s. Assuming the speed changes at a constant rate, what is the magnitude of the total acceleration of
asked by sandhu 
Statistics
The prediction equation for predicting y (pain indicator) from X (drug dosage) is y = 2.5X + 18. What is the observation mean for Y if ìX = 40 and óx square = 81?
asked by veeone 
maths
the length of a rectangle is 3 less than 5 times its width. Write a simpified algebriac expression for the perimeter of a rectangle. If the rectangle width is tripled and its length is doubled,the perimeter of new rectangle is 92cm greater than the
asked by aisha 
science
can a body topple on a frictionless surface? Rply early, i m waiting for your response!
asked by kritagya 
physics
which two object have masses 20kg and 15kg are placed on a plane surface.Both have same area.Which one is the correct answer for pressure. 1)20kg mass least pressure 2)15kg mass least pressure 3)20kg mass most pressure 4)both have same pressure
asked by sweetie 
chemistry
why is this reaction spontaneous? Mg + 2Cu2+ > Mg2+ + 2Cu+ Mg2+ + 2e > Mg E= 2.37 V Cu2 + e > Cu+ E= 0.15 V
asked by Tara 
physics
a)a box having mass of 500kg is placed on a horizontal surface.find the pressure exerted on the surface?do not forget to write formula. b)a pond of water filled with water upto 60m.1)write formula to find the pressure of water exerted on the base of
asked by sweetie 
science
Sir, the farm I am working had a death in one of the horse which lab has confirmed it as Rabies. We have large number of animals which have been tied with this animal since last few months where as the horse showed sign of pyrexia and died in two days
asked by Dr Ajit Handa 
physics
a bus having mass of 3000kg is moving at 30m/sec.find the momentum of the bus. 1)at the starting point from rest. 2)at the final state while motion at 30m/sec. 3)find the difference of momentum in above (1) and (2)
asked by sweetie 
physics
a bus having mass of 3000kg is moving at 30m/sec.find the momentum of the bus. 1)at the starting point from rest. 2)at the final state while motion at 30m/sec. 3)find the difference of moment in above (1) and (2)
asked by sweetie 
Statistics
The prediction equation for predicting y (pain indicator) from X (drug dosage) is y = 2.5X + 18. What is the observation mean for Y if uX = 40 and óx square = 81?
asked by veeone 
physics
a coconut is falling from a palm tree which of these is correct? velocity of coconut p.e of coconut 1decreasing decreasing 2increasing decreasing 3increasing increasing 4decreasing increasing
asked by sweetie 
physics
the distance of a girl from a plane mirror is 15m when she is standing infront of it.she can see her image behind the mirror 1 15cm 2 30cm 3 45cm 4 10
asked by sweetie 
physics
which one of the property is true for mirror 1refraction 2refletion 3communication 4measuring length 5gravity 6heating object
asked by sweetie 
Maths
A rectangle has legth & width in the ratio of 3:2.If the length is increased by 8 & width is increased by 50%.The ratio of new perimeter to origial perimeter is 8:5.Find the area of new rectangle.
asked by JAZZY 
PHILOSOPHY
What are your views on Free will and determinism? 1. The behavior of atoms is governed entirely by physical law. 2. Humans have free will. Do you accept both (1) and (2)
asked by Rochelle 
US History
1. The legislative agenda of Carter Administration during its first two years: A. was successful B. was criticized by many cabinet members for not attempting to introduce enough important legislation. C. was criticized by Congressional leaders for
asked by anthony 
spanish
"¿Qué me dices?" "____ que tengo razón." a. Os decimos b. Me dices c. Le dices d. Te digo D?
asked by Lily 
physics
a box having mass of 500kg is placed on a horizontal surface with 120cm lenght and 60cm width.find the pressure exerted on the surface?also write the formula.
asked by sweetie 
Chem, LAST ONE PLEASE HELP!
consider the reaction: CO(aq) + Cl2 (aq) > COCl2 (aq). Calculate Delta G at non standard conditions. T = 298.15K. Concentration of COCl2 is reduced to 0.01832 M while the concentrations of CO and Cl2 remain 1M. Delta G rxn = 67.4 kj.
asked by Tara 
physics
a pond of water filled with water apto 60m. 1)write formulato find the pressure of water exerted on the base of pond. 2)calculate the pressure exerted by the water on the base of pond?density of water is 1000kg/m3 3)half of the water was removed from the
asked by sweetie 
physics
1)if angle of incidence is 56 and it is decreased by 15 dagree then draw the path of a ray by drawing a diagram by using exact value of angle of incidence and angle of refraction.as refractive index of glass is 1.5. 2)name the phenomenon of light which u
asked by sweetie 
maths
A rectangle has length & width in the ratio of 3:2.If the length is increased by 8 & width is increased by 50%.The ratio of new perimeter to original perimeter is 8:5.Find the area of new rectangle
asked by JAZZY 
US history
USSoviet relations during the early years of Reagan Administration: A. improved because NATO decided not to deploy cruise missiles in Europe. B. changed little despite the positive messages sent from the new Soviet leader Andropov. C. worsened because the
asked by ant 
chemistry
Calculate the molar solubility of MX2, if the Ksp=3.3x10^8 how can i solve this problem?
asked by roseanne 
chem class
The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is __________. i know the answer is 7.00, but im not sure how to solve it, do i create an ice chart?
asked by laney 
chemistry
The pH of a solution that contains 0.818 M acetic acid (Ka = 1.76 x 105) and 0.172 M sodium acetate is __________. The Ka of acetic acid is 1.76 × 105.
asked by jack 
physics,plzzz....be fast
1)the cart has a mass of 50kg it moves with a speed of 35cm/sec. *)find the speed of cart in m/sec. *)find the kinetic energy of the cart? 2)an IGCSE student was calculating the power of the cart.he wanted to apply the formula of power.which formula did he
asked by sweetie 
ENGLISH
Elisa is a teenage girl who has trust issues with others. She does not like to tell individuals every fact of her life. What could Elisa do to help her trust people more and just be open with them?
asked by Monica 
Physics
How does progress today differ from progress thousands of years ago?
asked by Tiffany 
Chemistry
How do I separate a mixture of liquids?
asked by Selena 
Biology
What are the importance of seedless plants?
asked by Elizabeth 
Biology
Are club mosses gymnosperms? ex. horse tail (ferns) What are club mosses used for? Thank you
asked by Elizabeth 
spanish
"Mamá, quiero saber qué me dan tú y papá." "Yo,____ unos aretes de México; el regalo de papá va a ser una sorpresa." a. te damos b. te doy c. me dan d. le dan B?
asked by Lily 
Biology (URGENT PLEASE!)
This is a question of my last biology test: Name at least one technological device that would have not been invented without scientific knowledge: A.Radio B.Ruler C.Knife D.None of the above I answered D but got a cross for it. So can you please help me to
asked by Elizabeth 
Biology
What are the benefits of antibiotic for human being?
asked by Jessica 
Operating Systems
Using the COBEGIN and COEND expressions how would I rewrite these expressions 1.H^2*(0*(N+T)) 2. X*(Y*Z*W*R) 3. M*T*R
asked by Shelly H 
spanish
"Qué les dan Uds. a los gemelos para su cumpleaños?" "Generalmente ________ dinero." a. les damos b. les dan c. nos damos d. les doy D?
asked by Lily 
Physics
Write each number in scientific notation: 1) 15.01 ans. Is it 15.01 x 10 minus to the power of 2?? Am i wrong?
asked by Celina 
algebra
If you have a Pelican that weigh 30lb how would you find the wingspan of the Pelican with the rational exponent equation L=2.43*W^0.3326
asked by Teresa 
Physics
Calculate the vertical distance an object dropped from rest would cover in 12s if it fell freely without air resistance.
asked by Catherine 
art
The best art can cut through our tendency to experience life with complacency and prejudgment? what kind of bias is this?
asked by Anonymous 
Biology
What are the conditions that should be kept constant when we are growing seeds? ex. The place of plant and etc?
asked by George 
US history
USSoviet relations during the early years of Reagan Administration: A. improved because NATO decided not to deploy cruise missiles in Europe. B. changed little despite the positive messages sent from the new Soviet leader Andropov. C. worsened because the
asked by anthony 
history
1. Free elections in Poland: A. were not very significant B. demonstrated clearly that the Cold War was ending. C. showed that Solidarity was not really all that influential and that people would not turn their back on Communist government. D. were rigged
asked by sara 
Biology
Explain why would there be more white blood cells found in a person's body who is infected by salmonella bacteria rather than a healthy person?
asked by Laila 
Chemistry
Explain the important conditions when you crystallize a solid by crystallization.
asked by Laila 
Chemistry
What is the use of a Bunsen burner? In short please. Thank you
asked by Keziah 
phys
A 1155N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1915N crate hangs from the far end of the beam. (a) Using the data shown in the drawing, find the magnitude of the tension in the wire. (b)
asked by michelle 
Physics
What is the work done in lifting 60 kg of blocks to a height of 20m?
asked by scooby 
math
Hello I need help with scientific notation please 0.00000586
asked by tiff 
Biology
Fill in the correct answers: 1) Angiosperms is to flower as ______is to cone 2) Dicot is to two seed leaves as______ is to one seed leaf 3) Root is to fern as _____is to moss. Explain why mosses grow in moist areas. Thank you
asked by Keziah 
physics,plz.....give me answer as soon as possible
a pond of water filled with water apto 60m. 1)write formulato find the pressure of water exerted on the base of pond. 2)calculate the pressure exerted by the water on the base of pond?density of water is 1000kg/m3 3)half of the water was removed from the
asked by sweetie 
math
Please and this one 234,000,000 it scientific notation
asked by tiff 
Science
Which of the following describes the function of the central vacuole in plant cells? a. It helps reproduction b. It helps regulate water content c. It plays key role in photosynthesis d. It stores food. I think it's D. Am I wrong? 2) What are the
asked by Annabelle 
Chemistry  drugs
Can anyone help .. State the functional groups that the BZP and TFMPP in Party Pills and MDMA have in common. ph //\\/CF3 / [[ ]] [ N ] \\ // < Benzine [ [ N ] / N \ \H/ [ ] \ N / (BZP) H (TFMPP) / \ 0 0 \ / //\\ Benzene \  / \_/Me \NHMe MDMA Ectasy Me
asked by Apollo 
Chemistry
Which one of these has the smallest # of hydrogen atoms? a) Butyne b) Butane c) Butyne d) Cyclobutane Is the answer c)?
asked by Lindsay 
Caculus
integrate x^(1/2)e^x.dx from 0 to 4, n=12 1) the trapezoidal rule
asked by chen 
science
how long would it take to trvel to neptune going 10000 mph
asked by Anonymous 
wor wic
is 3.5% more than 54%
asked by tina 
Physics
2) A solid nonconducting sphere of radius R = 5.6cm has a nonuniform charge distribution or volume charge density p= (1.41pCm^3)r/R, where r is the radial distance from the sphere's center. a) What is the sphere's total charge? b) Calculate AND sketch a
asked by Ri 
Physics
In a certain cyclotron a proton moves in a circle of radius 0.5m. The magnitude of the magnetic field is 1.2T. a) What is the oscillator frequency? b) What is the final kinetic energy of the proton?
asked by Ri 
Physics
An electric generator contains a coil of 100 turns of wire, each turn forming a rectangular loop 50cm by 30cm. The coil is placed entirely in a uniform magnetic field with magnitude, B = 3.5T and direction initially perpendicular to the coil's plane. What
asked by Ri 
Physics
As a comet swings around the Sun, ice on the comet's surface vaporizes, releasing trapped dust particles and ions. The ions, because they are electrically charged, are forced by the electrically charged solar wind into a straight ion trail that points
asked by Ri 
Math
How many centiliters of pure acid must be added to 6 centiliters of a 50% acid solution to obtain a 70% solution?
asked by Monica 
Physics
Consider a “semiinfinite” nonconducting rod (that extends infinitely to the right only) and has a uniform charge density. Calculate the magnitude and direction of the electric field at the point, P, which is a distance of R away from the edge of the
asked by Ri 
thermal energy
1a. what is the rate of energy loss in wattm^2 through a glass window 3.00mm thick if the outside temp is 20^0c and inside temp is 25^0c. b.) A storm window having the same thickness of glass is installed parallel to the first window with an air gap of
asked by Aanu 
Chemistry
Please let me know how I'm doing with the following chemistry problems. I appreciate your imput. Here's problem 1: A sample of Helium gas occupies a volume of 29.4mL AT 18deg.celcius. (a)Would the volume of this gas sample be doubled at 36deg.celcius?
asked by Cliff 
Chemistry
I know that vanillin has the functional groups aldehyde, ether, and phenol. My assigment says there is a fourth. Which one am I missing?
asked by Lindsay 
chemistry
The pH of a solution that contains 0.818 M acetic acid (Ka = 1.76 x 105) and 0.172 M sodium acetate is __________. The Ka of acetic acid is 1.76 × 105.
asked by jack 
chemistry
Calculate how much Hg in a reaction that produces 87.4 g O2 using: 2HgO produces 2 Hg + O2
asked by Elizabeth 
physics
A 0.11kg mass is vibrating at the end of a horizontal spring along a frictionless surface. If the spring constant is 0.52 N/m, what is the displacement of the mass when the acceleration of the mass is 0.25m/s^2?
asked by jane 
Math
Give vertex, axis, xintercepts and yintercepts to parabola y= 3x^26x+4
asked by Becky 
physiology
if the value of ion concentration divided by atomic weight is equal for na+ and ca2+, which will have the higher osmolality?
asked by james 
world history
List the ethical concepts voiced by jesus.
asked by john 
physics
A 0.025 kg object vibrates in SHM at the end of a spring. If the maximum displacement of the object is 0.030 cm, and its period is 0.50s, what is the maximum acceleration of the object?
asked by jane 
math
subtraction of fraction 5 1/3 2 11/12 = 5 /12  2 11/12 = 4 /12  2 11/12 =
asked by Batul 
math
Please can any one help...
asked by Batul 
math brain teaser
more it it thani what does that mean??? also: EVELATOR and: DENTURES E F
asked by hannah 
physics
Find the length of a pendulum that has a frequency of 0.80 Hz?
asked by jane 
Math
Solve each equation. Round decimal answers to the nearest thousandth. 5(0.10)^x = 4(0.12)^x
asked by Star 
HEALTHCARE
How does the specialization of providers and hospitals affect continuity of care?
asked by DEE 
math
subtraction of fraction 6 1/8  3 1/2
asked by Batul 
Physics
The average distance separating Earth and the Moon (center to center) is 384 000 km. Use the data in Table 7.3 to find the net gravitational force exerted by Earth and the Moon on a 3.00 multiplied by 104 kg spaceship located halfway between them (Earth
asked by Anonymous 
math
is there any one there............
asked by Batul 
chemistry
Ammonia gas and carbon dioxide gas react to form aqueous urea (NH2CoNH2) and water. What volume of ammonia at 25 degrees celcius and 1.5 atm pressure is needed to produce 500 g of urea?
asked by Beth 
physics
A 50.0 kg girl bounces up and down on a pogo stick. The girl has an instantaneous acceleration of 2.0 m/s^2 when the displacement is 8.0cm. What is the spring constant of the pogo sticks spring?
asked by jane 
business
which of the following is NOT something to check during a thorough revision. style and tone organization punctuation and spelling content and clarity
asked by terrie 
Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 5.0 kg object at the origin of the coordinate system, a 12.0 kg object at (0, 2.0), and a 16.0 kg object at (4.0, 0).
asked by Anonymous 
Chemistry
Draw the condensed structural formula for the products of the acid hydrolysis of the following amide with HCl: CH3CH2C(=O)NH2 + H2O + HCl > I'm afraid I don't even know where to begin with this one, help!
asked by Lindsay 
Business Communication
Terry realizes that the draft of her memo announcing a new suggestion system mentions who will be evaluating the suggestions on both the first and second page, so she deletes the second reference and adds a little more to the first. What part of the
asked by terrie 
Business Communication
During a group meeting whrn they are each reading a draft of their formal reports, they realize that sometimes they have used the word "there' correctly and sometimes the word should be "their" They use their word processor's "find" features to help them
asked by terrie 
physics
a snowboarder moves down a slope for which theta= 22 degrees. the coefficient of kinetic friction between the board and the snow is 0.21 and her velocity is a constant 8.3 m/s. what will her speed 100 meters past the end of the slope? how far will she
asked by manny 
US history questions
CAN SOMEONE CHECK THESE QUESTIONS, I'M NOT 100% CONFIDENT IN MY ANSWERS? PLEASE THANK YOU! USSoviet relations during the early years of Reagan Administration: A. improved because NATO decided not to deploy cruise missiles in Europe. B. changed little
asked by anthony 
Access Nested IIF statement
Could someone please help me with my nested IIF statement? I am getting different errors for i such as "wrong number of arguments" and "missing bracket or closing parentheses." When I start adding parentheses then it will say wrong # of arguments. Any help
asked by Jenny 
Physics
A satellite of mass 210 kg is launched from a site on Earth's equator into an orbit at 210 km above the surface of Earth. (a) Assuming a circular orbit, what is the orbital period of this satellite? (b) What is the satellite's speed in its orbit? (c) What
asked by tom 
World History
Basically we had to come up with our own topic with the realm of East Asia. We also had to keep it before the 20th century. I have decided to write on Political Factionalism in the Yi Dynasty. It's a mother load of a paper, 2500/3000 words. I was thinking
asked by Dodo 
science
What are the hard and fast rules of Science, if any?
asked by Melissa 
programming.Java language
Write a program to plot a face. Provide a class FaceViewer and a class FaceComponent.
asked by JAZZY 
Physics
A 14000 N automobile travels at a speed of 50 km/h northward along a street, and a 7500 N sports car travels at a speed of 62 km/h eastward along an intersecting street. (a) If neither driver brakes and the cars collide at the intersection and lock
asked by Jen 
Physics
A 15.0 g rubber bullet hits a wall with a speed of 140 m/s. If the bullet bounces straight back with a speed of 125 m/s, what is the change in momentum of the bullet?
asked by Kelsey 
Physics
When tossed upward and hit horizontally by a batter, a 0.23 kg softball receives an impulse of 2.0 N·s. With what horizontal speed does the ball move away from the bat?
asked by Stephanie 
Physics
In a simulated headon crash test, a car impacts a wall at 25 mi/h (40 km/h) and comes abruptly to rest. A 120 lb passenger dummy (with a mass of 55 kg), without a seat belt, is stopped by an air bag, which exerts a force on the dummy of 3000 lb. How long
asked by Sandi 
Algebra
Find the equation of a line parallel to the line y=3/4x5?? I am not sure how to do this problem, can someone Please help :) Thank You in advance!
asked by Shannon 
programming java language
For faster sorting of letters, the postal service encourages companies that send large volumes of mail to use bar code denoting the ZIP code (see figure below). Student XXXX PO Box 34689 Jeddah 21478 KSA There are full height frame bars on each side. The
asked by JAZZY 
Managerial Economics
The manager of All City realtors wants to hire some real estate agents to specialize in selling housing units acquired by the Resolution Trust Commission (RTC) in its attempt to bail out the savings and loan industry. The commission paid by RTC to the
asked by Dede 
math
what is the domain of the following relation? {(1, 2) , (2,5), (4,9), (6, 11)}
asked by rebecca 
science
Standars enthalpy Mg(OH)2 + H2SO4 = MgSO4 + 2 H2O
asked by monique 
Algebra
The value of a 1950 Jefferson nickel is 8/5 the value of the 1945 nickel. Together the value of the two coins is $91. What is the value of each coin?
asked by Tammie 
math
A pair of skydivers jump out airplane 5.5km above the ground. The equation H=55005t^2 is an appropriate model for the divers' altitude in metres at tseconds after jumping out of the plane. A. After 10secs how far have the divers fallen? B. They open their
asked by ted 
english
What are the adverbs in 'Will you please put your book inside your bag?'
asked by Anonymous 
math
A professional stunt performer at a theme park dives off a tower 21metres high into the water. His height above the ground at time tseconds is given by the equation h=4.9t^2+21 a. How long does it take to reach the halfway mark?
asked by ted 
scince
how many bones are in a body
asked by huda 
math
Suppose that the population of a town is described by P=0.16t^2=7.2t=100, where P is the population in thousands and t is the time in years, ( with t=o representing the year 2000). A. what will the population be in 2010? B. what was the population in 1995?
asked by ted 
Chemistry
Which compound has the formula HC(=O)OCH2CH3?
asked by Lindsay 
algebra
Can someone help me explain how factoring is used to solve quadratic equations? I can't find an explaination anywhere.
asked by Shelley 
8th grade
draw a diagram showing the motion of a satellite around Earth. Draw the force vectors acting on the sattelite. Is the sattelite accelerating?
asked by jamaila 
US History
I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of
asked by Alex 
PLEASE HELP! ALEBRA
I need to write an equation of the line containing the given point and parallel to the given line. in y = mx+b. (6,2;) 6x=5y+4
asked by AMY 
geometry
Two chords intersect a circle. The shorter chord is divided into segments of lengths of 9 inches and 12 inches. The longer chord has a length of 24 inches. Find the length of the shorter portion of the longer chord .
asked by Sara 
chemistry
What mass of KOH is necessary to prepare 799.9 mL of a solution having a pH = 11.53?
asked by AMANDIP 
Physics
For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.1 mmlong, 0.46 mg critter can reach a height of 17 cm in a single leap. A) Neglecting air drag, what is the takeoff speed of such a flea? I don't understand how
asked by Roxanne 
statistics
Estimation is best defined as: 1. a process of inferring the values of unknown population parameters from those of known sample statistics 2. a process of inferring the values of unknown samples statistics from those of known population parameters 3. any
asked by joe 
HELP! Statistics
Which of the following statements about the margin of error is false? 1. Statisticians routinely construct interval estimates by making their point estimate the interval center and creating a range of other possible values, known as the margin of error,
asked by Felicia 
English
1. They are going to seek new members. 2. They are going to seek for new members. (Are both OK?)
asked by rfvv 
Binomial
Independent samples of n1 = 400 and n2= 400 observations were selected from binomial populations 1 and 2, and x1 = 100 and x2 = 127 successes were observed. What is the best point estimator for the difference ( p1p2) in the two binomial proportions? a.
asked by Erica 
Chem
A sample of nitrogen (N2) gas has a volume of 250ml at 30 degrees C and a pressure of 745mmHg. What is the volume of the nitrogen at STP? I got 22 liters in significant figures is this right. thank you.
asked by Lindsay 
math
The city bus company usually transports 12000 riders per day at a ticket price of $1. The company wants to raise the tickets price and knows that for every 10 cents increase, the number of riders decreases by 400. A. What price for a ticket will maximize
asked by ted 
Psychology
Elisa is a teenage girl who has trust issues with others. She does not like to tell individuals every fact of her life. What could Elisa do to help her trust people more and just be open with them? ok. I think that maybe she could start practising at home
asked by Monica 
english 12
i have a poetry analysis tomorrow is there any websites that will help me also does anyone know how to figure out what exactly the imagery is in a poem..how can we make out it is an imagery , any examples..thank you A MILLION tyms
asked by Sabrina 
sew
reasons we control fullness
asked by Anonymous 
MATH
in a bag there are 3 different marble colors. what is the minimum marble does one have to remove in order to get 3 marble of the same color? * i know this is a probability question but since it does not give you the individual amount i don't think i can
asked by xenon 
english
how does the structure of the poem affect the meaning of the poem..or contribute to the poem THank u soo much :)
asked by Sabrina 
hw
A car travels along a straight road, heading east for 1 h, then traveling for 30 min on another road that leads northeast. If the car has maintained a constant speed of 56 mi/h, how far is it from its starting position?
asked by Anonymous 
English
Can you please check if the following statements are possible? Thank you very much. 1)The mythologies describe the Druids as having magical powers such as divination and shapechanging themselves into the forms of animals (not into animals' forms?)
asked by Franco 
Hypothesis
Consider testing the hypothesis: H0:ƒÊ=100 vs. Ha:ƒÊ‚100. If the value of the test statistic is equal to 1.36, then the pvalue is: A. 0.4131 B. 0.1738 C. 0.2066 D. 0.9131
asked by Enrique 
English
I forgot to include the following statements. Tahnk you for you help. 1) News is brought that Antonio's ships had been lost (had sunk?) at sea. 2) The Jews were restricted in the jobs they could do. 3) The actors entered (went on stage) from (through?) two
asked by Franco 
6th grade
Inputc3,2,5,15,1,6,30 outputw10,15,6,2,30,5,1 write the rule for each function . Write the rule as an equation. PLEASE HELP
asked by ty_11 
Math
Use the echelon method to solve the following system. x/5+3y =31 2xy/5=8
asked by Star 
Math
Use the GaussJordan method to solve the equation: 3x5y2z=9 4x+3y+z=11 8x5y+4z=6
asked by Andrew 
Chem
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex. FeSO4•NH4)2SO4•6H2O + H2C2O4•2H20 > FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 6FeC2O4 + 3H2O2 +
asked by Pat 
phy
An ordinary glass is filled to the brim with 350.0 mL of water at 100°C. If the temperature decreased to 19°C, how much water could be added to the glass?
asked by ami 
math
Boris throws a ball vertically upward from the top of a cliff. The height of the hall above the base of the cliff is approximated by the model h=65+10t5t^2, where h is the height in metres and t is the time in seconds. a. How high is the cliff? b. How
asked by ted 
math
how do you determine an equation of a parabola in standard form.
asked by ted 
math
Helga owns a campground, and she has installed a rectangular swimming pool measuring 10m by 20m. She wants to put a wooden deck of uniform width around the pool. A. Helga has budgeted $1920 to spend on the deck and knows that construction costs are
asked by ted 
physics
A 3640 lb roller coaster experiences a constant airresistance force of 26 lb and a constant friction force of 20 lb. What initial velocity is required for the coaster to make it around the 0.57 mile track and coast to a stop at its starting location?
asked by sandhu 
English
1. I am going to try an English club. 2. I am going to join an English club. (Does 'try' mean 'join'?)
asked by rfvv 
math
Suppose that the population of a town is described by P=0.16t^2+7.2t+100, where P is the population in thousands and t is the time in years, ( with t=o representing the year 2000). A. what will the population be in 2010? B. what was the population in 1995?
asked by ted 
HIS 135
CheckPoint: Johnson’s “Great Society” Kennedy’s New Frontier and Johnson’s Great Society • Like JFK, President Johnson also had a vision for his administration. His program of initiatives was called the “Great Society.” Please: o Describe
asked by Pam 
math
The city bus company usually transports 12000 riders per day at a ticket price of $1. The company wants to raise the tickets price and knows that for every 10 cents increase, the number of riders decreases by 400. A. What price for a ticket will maximize
asked by ted 
Math(Geometry)
In the diagram below(no diagram but details will be provided), right triangle ABC and line BD is an altitude to side line AC. * Prove that (AB)^2=(AC)(AD) When you label the triangle B should be were the right angle is C should be at the top of the
asked by Phyllis 
Physics
A 2.1 mmlong, 0.46 mg house flea can reach a height of 17 cm in a single leap. I've found that, neglecting air speed, v = 1.8 m/s How do I calculate the kinetic energy of this flea at takeoff & its kinetic energy per kilogram of mass? (to get K = __ J)
asked by Roxanne 
Science =____= ASAP!!!
Is Adding Vinegar to Yeast A Physical or a Chemical Change????
asked by Sumaiya 
college algebra
g(x)= {x+6, x is less or equal to 4 {12x 4, x> 4
asked by ashley 
HIS 135
Explain how Johnson’s “Great Society” was similar and/or different from Kennedy’s vision.
asked by Pam 
college algebra
g(x)= {x+6, x is less or equal to 4 {1/2x 4, x> 4
asked by ashley 
physics
An RC car has a power rating of 12 W and a mass of 1.0 kg. How long would it take to reach 5 m/s ? thanks.
asked by erin 
English
1. You know that restaurant round/around the corner? It's closed down. 2. You know that restaurant round/around the corner? It's closed now. (Are both sentences grammatical? Are both the same? Do we have to use 'round' or'around'? Are both OK?)
asked by rfvv 
PHYSICS HELP PLEASE
A container is fitted with a movable piston of negligible mass and radius r = 0.061 m. Inside the container is liquid water in equilibrium with its vapor, as the drawing shows. The piston remains stationary with a 120kg block on top of it. The air
asked by Anonymous 
physics
Posted by sandhu on Wednesday, November 24, 2010 at 4:29am. The firetruck goes around a 180°, 162 m radius circular curve. It enters the curve with a speed of 12.6 m/s and leaves the curve with a speed of 38.8 m/s. Assuming the speed changes at a constant
asked by sandhu 
statistics
An experiment with results acquired showed that at the beginning the temperature was 20 degrees and the size of bacteria was 1 mm long. 12 hours later the temperature was 56 degrees and the size of the bacteria was 12 mm long. Create a graph showing the
asked by Anonymous 
English
Why do miracles come true and happen for the right people?
asked by Bethany 
Geometry
How can I find the Intersection between 3x 2y =6 and 5x +7y =41?
asked by Malik 
Physics
A 14000 N automobile travels at a speed of 50 km/h northward along a street, and a 7500 N sports car travels at a speed of 62 km/h eastward along an intersecting street. (a) If neither driver brakes and the cars collide at the intersection and lock
asked by Sandi 
college physics
A car starts from rest on a curve with a radius of 190 and accelerates at 0.300 . How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.00 ?
asked by Anonymous 
Social Studies ASAP!!!
What were the 5 MAIN IMPORTANT Acts which led to the American Revolution???
asked by Anonoyms 
English
what is the difference between SEQUENTIAL POEMS and NARRATIVE POEMS ..please could you give explanation and not a website link thanks :)
asked by Sabrina 
American History
I need to write a story about a Patriot during the American Revloution and I have NO idea what to write. I don't even know anything about the American Revolution. Help!
asked by Baylee 
chemistry
in a recipient of 40 cm^3 of water at 4°C is introduced aluminum over 80g to 8ºC. neglecting the effect of the recipient, calculate final temperature
asked by karla 
science
What is the final temperature when you mix 40ml of 40degree celcius water and 25ml of 20 degree celcius water?
asked by nim 
physics
in a vessel of 40 cm3 of water at 4 ° C is introduced aluminum over 80g to 8 º C. neglecting the effect of the vessel, calculate final temperature
asked by karla 
algebra
Hoc can the factoring of 9x to the second power plus 18x plus 8, help factor 9a to the second power plus 18a plus 8b to the second power.
asked by Janice 
Algebra II
A salesman drove from his home to a nearby city at an average speed of 40 mi/. He returned home at an average speed of 50 mi/h. What was his average speed for the entire trip? I tried this question, and apparently the answer isn't 45 mph. It's something of
asked by Indigo 
us history
What developments in American society helped to make the racial revolution of the 1950s and 1960s possible?
asked by sam 
chemistry
calcium hydroxide is titrated with nitric acid.What volume of 0.0200 M calcium hydroxide is required to neutralize 35.00 ml of 0.0500 M nitric acid?
asked by vanessa 
physics
A 3640 lb roller coaster experiences a constant airresistance force of 26 lb and a constant friction force of 20 lb. What initial velocity is required for the coaster to make it around the 0.57 mile track and coast to a stop at its starting location?
asked by sandhya 
logical framework
Hello I need to write an essay about the logical framework.I do not know how to start. I need to answer if the logical framework is the mastertool in project cycle management. can someone give me some indications. thank you
asked by sie 
Math
In simple annuities, why is the amount of payment for the first deposit R(1+i)^n1? Shouldn't it be n?
asked by Emily 
Physics
Why does tension in a rope increase as the rotational speed of a ball increases?
asked by Alex 
Physics
A point charge of 14nC and +12nC is located 12cm along the xaxis. Determine the magnitude and direction of the electric field intensity at point P at the midpoint and 8cm perpendicular from the xaxis: p   8.0cm   14nC.. 12 nC 6cm
asked by Eddie 
medical
so my friend said hes tired and he was like "yeah i think i got the itis :p" what is itis?
asked by alanaR. 
math
a drinking straw of length 21 cm is cut into 3 pieces. the first length is x cm. the second piece is 3 cm shorter than the first piece. the third piece is twice as long as the first piece. state in terms of x the length of each of the pieces.
asked by Anonymous 
chemistry
A 20ml sample of .125M diprotic acid solution was titrated with .1019M KOH.the constants for the acid are k1=5.2*10 ^5 and K2=3.4*10 ^10. What added volume of base does each equivalence point occur? i got .0254L for the first one and .0508 for the
asked by help