Questions Asked on
January 12, 2013

Math
Natalia picked 7 1/6 bushels of apples today and 4 5/8 bushels yesterday. How much more did she pick today?
asked by Anonymous 
Math
Determine the sum of the first seven terms of the geometric series in which ... F) t5 = 5 and t8 = 40 I'm stuck on this one!
asked by Crystal 
Math
Determine the sum of the first 20 terms of the arithmetic sequence in which ... f) the 7th term is 43 and the 13th term is 109 I know you can make two equations : 43 = a + 6d and 109 = a + 12 d And subtract them to get d = 11 But I know there's another way
asked by Crystal 
physics
A 500 g piece of silver at 150 degree Celsius is submerged in 1000 g of water at 5 degree Celsius to be cooled. determine the final temperature of silver and water given Cwater = 4.18 x 10 ^3 J/kg degree Celsius Csilver = 2.4 x 10^2 J/kg degree Celsius
asked by tobby 
Physics
A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 188.0 N at an angle of 26° with the horizontal. The box has a mass of 30 kg, and the coefficient of kinetic friction between the box and
asked by T.J. 
maths
If P(x,y),F1(3,0), F2(3,0) a nd 16x^2+25y^2=400, then find PF1+PF2.
asked by Anonymous 
Statistics
Which of the following statements are true about matched pairs analysis? I. In a matched pair analysis you use a singlesample procedure. The sample is made up of the difference between pairs of observations. II. In a matched pairs analysis the two
asked by Meow 
physics
a farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. the sledge hammer moves at a speed of 3.00 m/s and comes to rest on the spike after each swing. assuming all the energy is absorbed by the nail and ignoring the work by the nail, how much
asked by tulip 
physics PLEASE HELP
In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner?
asked by Anonymous 
physics
sphere A has a mass of 4.2*10^2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall
asked by ali 
physics
A solid sphere of mass m and radius r rolls with out slipping along the track.it starts from rest with the lowest point of tthe sphere at aheight h above the bottom of the loop of radius R,much larger than r.(a) what is the minimum value of h (interms of
asked by Anonymous 
Math
Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1) i need help plz
asked by plz help 
difficult chemistry
100 Liters of air at STP is slowly bubbled through 200ml of 0.03N Ba(OH)2 solution. The Baco3 formed due to reaction is filtered and few drops of phenolphthalein is added to the solution rendering it pink. The solution required 25ml of 0.2N HCL solution
asked by Fai 
Math
Okay, so I know this should be really easy but my mind is just drawing a blank: For each series, calculate t12 and S12 a) 37 + 41 + 45 + 49 + ... Okay so I calculated S12 to be 708, and I know that's right. For t12, I know I can easily find the general
asked by Crystal 
Physics
The instruments attached to a weather balloon have a mass of 5.2 kg. The balloon is released and exerts an upward force of 98 n on the instruments. A)what is the acceleration of the balloon and instruments? B) after the balloon has accelerated for 10s, the
asked by Jules 
Math
A clothing store ordered 300 sweaters and sold 20 of them at $100 the first week. The second week, the selling price was lowered by $10, and 40 sweaters were sold. In the third week. The selling price was lowered by another $10, and 60 sweated were sold.
asked by Crystal 
Physics
Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 364 N, is applied at an angle α = 33° to the forward dashed line. The second force, F2 = 522 N, is applied at an angle β = 11° to the forward dashed
asked by Dave Lynn 
Physics
A 93 kg clock initially at rest on a horizontal floor requires a 614 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 510 N keeps it moving with a constant velocity. Find μs between the clock and the floor. Find
asked by Josh Templin 
mec 112
A 10kg trunk lies on a horizontal rough floor,the coefficient of friction between the trunk and the floor is 0.75. Calculate magnitude of force P which is necessary to pull the trunk horizontally if the P is applied horizontally and at 30 degrees above the
asked by anu 
physics
A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate. answer in
asked by Lauren Miller 
physics
Suppose the charge q2 in the figure below can be moved left or right along the line connecting the charges q1 and q3. Given that q = +15 µC, find the distance from q1 where q2 experiences a net electrostatic force of zero? (The charges q1 and q3 are
asked by stoicrider77 
physics
a worker lays a rubber handled 0.500kg hammer down a sloped roof. it slides down the roof to a level portion of the roof where it slides another 2.oo m long this horizontal surface. the coefficient of friction between the rubber handle and the shingles is
asked by teed 
math
Jamia is deciding between two longdistance telephone plans: • Plan A charges $5 per month plus 6¢/min. • Plan B charges $20 per month plus 1¢/min. Jamia usually makes about 200 min of long distance calls each month. Which plan costs less? Show your
asked by jenny 
science
Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide , dry ice. Note the diagram is not drawn to scale and contains breaks in the axes to signify this. Using the diagram, answer the following questions
asked by cristie 
PHYSICS
Determine the normal force for a laundry basket with a mass of 5.8 kg in each of the following situations (a) at rest on a horizontal surface (b) at rest on a ramp inclined at 12° above the horizontal (c) at rest on a ramp inclined at 25° above the
asked by Meg Peterson 
chem
Draw the structures of the two monomers that yield Nomex®. can someone show me?
asked by Samantha 
physics
A 0.155 kg baseball is thrown upward with an initial speed of 14.5 m/s. What is the force on the ball when it reaches half of its maximum height? (Disregard friction.) What is the force on the ball when it reaches its peak?
asked by Dylan G. 
Physics
A 4.3 kg bag of groceries is in equilibrium on an incline of angle θ = 30°. Find the magnitude of the normal force on the bag.
asked by Josh Templin 
Math precalculus II
The area of a sector of a circle with a central angle of 15π rad is 18 m². Find the radius of the circle. I set up my equation as: 18m^2=(1/2)(r^2)(1/5 pi) i isolate r^2 by dividing both sides by (1/2) and (1/5 pi, getting: 180pim^2=r^2 i then take the
asked by Brendy 
CJ 216
Discuss the possible communication methods between the officer and his/her agency.
asked by KARINA 
physics
A 200.0 N force moves a 120.0 kg crate on a friction less surface from rest to final speed of 9.6 m/s. what is the displacement of the crate at the time it reaches this speed ?
asked by tommy 
geometry
Write an equation of a circle with diameter AB.A(0,0),B(6,8)
asked by shantia 
computers
What is the code to unlock the elite puffle on club penguin? P.S: This is very important to me so please give me the code.
asked by Anonymous 
math
How many equilateral triangles in the plane have two vertices in the set {(0,0), (0,1),(1,0),(1,1)}?
asked by meep 
physics
a mechanic uses a chain and bloc pulley to lift a 875kg engine 4.0 m to the top of the garage. the downward force on the chain over the 4.0 m distance is 5.0 x 10^4 N. a)calculate the work done in raseing the motor b)how much useful work was done c)what
asked by tyler 
math
Maria normally spends a halfhour driving to work. When her average speed is ten miles per hour slower than usual, the trip takes ten minutes longer. How many miles does she drive to work?
asked by meep 
Math
Find the domain of the expression 4x^210x+3 and is this factorable?
asked by Justin timberlake 
science
How are cyclones formed
asked by Anonymous 
English
What 3 elements and introductory paragraph in an essay have? 1 hook 2 thesis statement 3????????
asked by Darcy 
Math
A pizza box with a square base is to be made rom a rectangular sheet of cardborad by cutting six 1inch squares from the corners and the middle sections and folding up the sides. If area of the base is to be 144 in^2, what piece of cardboard should be
asked by Barb 
physics
an elevator motor provides 45 W of power while lifting a 2000 kg elevator 35 m. if the elevator contains six passengers of the same mass and it takes 20.0 to accomplish this task, determine pass of each passenger.
asked by tanya 
math
Phil is making a 40kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20
asked by Larry 
science
How are cyclones formed
asked by Anonymous 
physics
a 2.0 kg bad is held by a string to the ceiling . A 10 g bullet traveling at 200 m/s strikes the stationary bag. the height after the collision is 10.0 cm. assuming there is no friction, determine the speed, in meters per second, of the bag after the
asked by terry 
ProbabilityMath
Please forgive me for posting this for the 3rd time but I really need to learn this: A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to
asked by Alia 
biology honors
Why do leaves tend to be flat.choices a.so that water can easily be absorbed and carried to the rest of the plant. B.so that sunlight can easily penetrate to the leafs photosynthetic tissues. C.so that nutrients can easily enter the plant and be be used
asked by shantia 
chemistry
If the diffusivity is observed to double when the temperature is increased by 10 degrees C, what is the activation energy for diffusion? Express your answer in units of eV.
asked by Anonychem 
Math
Is there a way to find the term number of a sum in an arithmetic series? Like if you had the sum of the first 12 terms in a series could you find the term value of term 12 using the sum? For example in one of my previous questions : For each series,
asked by Crystal 
Science
In the subject guide search on EDSeek's Home page, enter the following subject term: paleobotany. Based on the results from this search, choose the best answer to this question. 8. Which of the following related subjects is listed as a broader term? A.
asked by Junbhe 
Information Leteracy
Which of the following would be the best way to get to a list of encyclopedias that are available on the Web? A. Look at the Library of Congress Web site. B. Visit the Internet Public Library. C. Search the library catalog. D. Search a periodical database.
asked by Junbhe 
math
If "today is Monday" is true and "It is May 5th is false, which of the following is false? 1  Today is Monday and it is not May 5th. 2  If today is Monday, then it is May 5th. 3  Today is not Monday only if it is May 5th. 4. Today is not Monday or it is
asked by liza 
Biology
Why DNA is more stable than RNA?
asked by Mengistu 
English/Essay
Could someone tell me if I have done my essay the right way? Please its due Monday?? "The internet is a much easier resource for students than a library” The first reason the internet is a much easier resource for students than a library, you can Find
asked by Jake 
THEORY OF MACHINE
The principal stresses at a certain point in a strained material are 150 MPa and 48 Mpa both tensile. Find normal and tangential stresses on a plane inclined at 20 degree with the major principal plane.
asked by rajesh jain 
physics
A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of
asked by Samuel 
Earth science
What is the primary cause of crustal movement?
asked by ? 
math
If "today is Monday" is true and "It is May 5th is false, which of the following is false? 1  Today is Monday and it is not May 5th. 2  If today is Monday, then it is May 5th. 3  Today is not Monday only if it is May 5th. 4. Today is not Monday or it is
asked by dana 
physics PLEASE HELP
Two charges are placed on the x axis. One of the charges (q1 = +7.91C) is at x1 = +3.00 cm and the other (q2 = 27.3C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =
asked by Anonymous 
assembler language
write an assembly language subordinate count according to these specs: accepts a pointer to an array or signed words in register X. Accepts a word value in register Y, which indicates the number of array elementsl Returns the number (i.e. count) of nonzero
asked by chris 
Math HELP PLEASE
1.My family went to starbucks. My daughter and myself ordered drinks that were the same price. My son's drink was 5.00 dollars more than my drink. The total bill was $18.50. How much was each drink? 2.There were candies on the table. Andy grabbed 50% of
asked by Louis 
physics
a 10kg toy mootorized boat uses 2.0 W of power, has a constant accel from rest and reaches a certain speed in 10 s on a horizontal surface. what was the final speed ?
asked by teryko 
math
Daniel will randomly pick a marble from a bag that has three red marbles and six white. If he does not put any marble back into the bag and picks a new one each time, what is the probability that both marbles will be white. If he puts the first marble back
asked by meep 
geometry
Write an equation of a circle with diameter AB.A(0,0),B(6,8)
asked by shantia 
information Leteracy
To determine the best place to begin your online research, you should first A. identify keywords and search terms. B. settle on a single, concise search term or phrase. C. choose several verbs and modifiers to help define your search. D. formulate your
asked by Junbhe 
information Leteracy
To critically evaluate the qualifications of an author on a topic, carefully consider all of the following except the A. number and type of awards the author has received. B. author's educational background. C. other articles the author has written. D.
asked by Junbhe 
Earth Science
1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology
asked by Emma 
algebra
a car tire has a diameter of 3.5ft. How many revoulutions does each tire make if the car travelled 400ft ?
asked by lovebugg 
difficult chemistry
Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that excess kl and hcl were added. Who helps me
asked by Fai 
chemistryy
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 4.548 x 10^10m. Determine the frequency (in hz) of the interacting photon. i got
asked by p 
geometry
What do you do to figure out space in irregular shapes?
asked by Mommy 
Chemistry
The solubility of bismuth iodide (BiI3) in water is 8.491 x 103 M. Calculate the value of the solubility product. The dissolution products are Bi3+(aq) and I−(aq)
asked by yolo 
math (double checking)
I've posted this question before but I forgot to say that I was dealing with polynomial inequalities (not sure if that makes a difference) The question is: Solve the following polynomial inequalities. (9 marks) 4x  5 ≤ 2(x  7) x^3  5x^2 + 2x ≥ 8
asked by Anonymous 
Algebra 2
Two days ago "Steve" helped me with this problem. I am grateful to him. I didn't get it and asked for him to help me again. He showed it to me again, but I needed more steps shown. Then I think he was finished for tutoring for the day before I could see it
asked by Bart 
physics
an electron with a mass of 9.11 x 10^31 kg is accelerated from rest across a set of 150 V and are separated by 0.80 cm. a) determine the kinetic energy of the electron after it crosses between the plates.( ans 2.4 * 10^17 j) b) determine the final speed
asked by David 
physics
Two charges are placed on the x axis. One of the charges (q1 = +7.91C) is at x1 = +3.00 cm and the other (q2 = 27.3C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =
asked by Anonymous 
med. terminology
i am having some trouble, i have found some of the mistake but seem like i cant finf the rest: CHIEF COMPLAINT: This 53yearold man visited the outpatient clinic for dyspnea and recurrent coughing. HISTORY OF PRESENT ILLNESS: This patient has a long
asked by holly 
Math
Hi. How to you solve 6.3*10^4=4x^3 on a calculator? What buttons or functions do you press on the calculator to solve this
asked by Ted 
help
4x + 2 = x + 8. (1 point) x = 4 x = 3 x = 2 x = 1 i need help...
asked by plz help 
math
Five boys and seven girls in a history class will go on a field trip during the Easter vacation. They make a committee of three members to prepare for the trip. What is the probability that this committee will consist of three boys? What is the probability
asked by meep 
chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2
asked by Anonychem 
Chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 0.468×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by Ankur 
science
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of . Determine the frequency (in hz) of the interacting photon.
asked by cristie 
math
1. How could you use the product of 1/2 and 200 to find the product of 1/8 of 200? 2. How could you use the product of 1/3 of 300 to find the product of 1/6 and 300?
asked by Anonymous 
math
Phil is making a 40kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20
asked by Larry 
science
The solubility of bismuth iodide in water is 4.291 x 103 M. Calculate the value of the solubility product. The dissolution products are and
asked by minis 
science
Do you expect the solubility of in 0.1 M to be equal to, greater than, or less than that of in water? Explain
asked by minis 
chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 5.908×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by Blair 
chemistry
The solubility of bismuth iodide (BiI3) in water is 9.491 x 103 M. Calculate the value of the solubility product. The dissolution products are Bi3+(aq) and I−(aq)
asked by julia 
CHEMISTRY
Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers (carriers/cm3) at room temperature in this material. Calculate the absorption edge of this material. Express your answer as a wavenumber in units
asked by julia 
physics
In what height the gravitational force with which earth exerts on any object in distance is 5 times smaller than the gravitational force,with which earth exerts in the same object when that object is on earth?
asked by Vlera 
Chemistry
Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers (carriers/cm3) at room temperature in this material. Calculate the absorption edge of this material. Express your answer as a wavenumber in units
asked by Ankur 
social studies
i have to make a slideshow on urbanization in africa and i need help
asked by Gabby 
Math
Given the following question: 3e^(2*t)*sin(pi*t + pi/3)] How do I find a) period b) frequency c) time (phase) shift d) time constant
asked by Jen 
physics
In what height the gravitational force with which earth exerts on any object in distance is 5 times smaller than the gravitational force,with which earth exerts in the same object when that object is on earth?
asked by PLEASE HELPPP 
Chemistry
The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The xray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first
asked by bs 
physics
A 3.40 kg block is pushed along the ceiling with an constant applied force of F = 82.0 N that acts at an angle θ = 50° with the horizontal, as in the figure below. The block accelerates to the right at 5.80 m/s2. Determine the coefficient of kinetic
asked by Amy Lee 
reading
where do you put a comma in have you chosen what you are going to wear on opening night?
asked by a 
Health
How does society define health
asked by Kathy 
THEORY OF MACHINE
A piece of material subjected to three mutually perpendicular stresses of 70, 56 and 84 MPa. If E= 200 Gpa, Poissions ratio= 0.28 Determine 1) Principal strains 2) Shear modulus 3) Bulk modulus.
asked by rajesh jain 
chemistry
To what volume should you dilute 50.5 of a 4.60 solution so that 30.0 of the diluted solution contains 3.30 of KI?
asked by Tata 
To rajesh jain
Do not post any question more than once. Currently, I don't see any physics tutors online. Please be patient and wait for them to find what you have already posted.
asked by Writeacher 
Earth Science
Quartz is made up of___________ a.)silicon and oxygen b.)iron and oxygen c.)silicon and carbon d.)iron and silicon
asked by ? 
Earth science
Which of the following is MOST similar between the inner and outer core of the Earth? a.)composition b.)pressure c.)movement d.)density
asked by ? 
Earth science
The inner core of the Earth is solid because of increased___________ a.)density and composition b.)density and temperature c.)temperature and pressure d.)pressure and density
asked by ? 
Earth Science
Seismic waves move faster through which of the following media? a.) water b.) steel c.) oxygen d.) oil Please answer my study guide is due Monday and the teacher hasn't gone over this I looked through my notes and everything. It would really help if you
asked by ? 
math
The ratio of guests under 15 to the total number of guests is 1:2. How many guests are under 15? The answer is five. Am I correct. Table Age Range Guest Under 15 X 1540 6 4165 3 Over 65 2
asked by Americal 
math
help me solve: find x in cos^2x  2 sinx cosx  sin^2x = 0
asked by gopi 
Statistics
Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it representa this level: heights of 40 high school students.
asked by Karen 
biology honors
In which tissue of plants are new cells created? A.dermal B.vascular C.ground D.meristematic
asked by shantia 
science
The rate constants for a first order decay reaction are found to be:
asked by hermy 
science
Estimate the ClAsF bond angle
asked by harry 
biology honors
In which tissue of plants are new cells created? A.dermal B.vascular C.ground D.meristematic
asked by shantia 
science
What is the pH of 50 mL of a 0.2M glycolic acid aqueous solution after adding 5 mL of 0.25 M KOH? The pKa of glycolic acis is 3.83 at 25 .
asked by harry 
science
Calculate the surface energy of the (100) surface of niobium. The enthalpy of atomization of niobium is 745 kJ/mole. Express your answer in units of J/cm2.
asked by harry 
Math
Find the equation of straigt line whose one cordinate is (2,3) and slope is 2
asked by Anonymous 
chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon. Please help!
asked by Anonychem 
science
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2
asked by harry 
chemistry
At temperatures above 930 ∘C, PbO reduces PbS to form metallic lead (Pb). The byproduct of the reaction is SO2. Calculate the amount of lead produced (in kg) when a reactor is charged with 207.0 kg of PbS and 310 kg of PbO. Please help!!!
asked by Anonychem 
chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 1.828×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by ani 
chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by howard 
science
Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation
asked by harry 
Maths
For logarithms, if asked to write in simplest form, is it better to write the argument in radical form or exponential form.
asked by Gabriel 
Information Leteracy
When books are arranged in correct order on the shelves by call number, which of the following call numbers will be first? A. DA 546 .L74 1986 B. D 839 .G3 1987 C. D 839 .G42 2004 D. DE 82 .A49 2006
asked by Junbhe 
math
Phil is making a 40kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20
asked by Larry 
Information leteracy
The Atlas of World Religions is an example of which of the following reference sources? A. General almanac B. Historical atlas C. Subjectspecific atlas D. General world atlas
asked by Junbhe 
Chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of
asked by markus 
Chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by selly 
Statistics
Which of the following statements is not true about samples that can be treated as matched pairs data? I. Data collected on these samples is analyzed by calculating the differences between paired observations and using that data in one sample tests. II.
asked by Meow 
chemistry
The vacancy fraction of a particular metal is found to double as the temperature of the metal is increased from 700 degrees C to 850 degrees C. Calculate the enthalpy of vacancy formation for this metal. Express your answer in units of eV.
asked by Anonymous 
Chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 0.468×10−10 m. Determine the frequency (in hz) of the interacting photon.
asked by Ankur 
Math
Given the following question: 3e^(2*t)*sin(pi*t pi/3)] How do I find a) period b) frequency c) time (phase) shift d) time constant
asked by Steve 
Chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2
asked by Ankur 
difficult chemistry
502g sample of dry cac03 and cacl2 mixture was dissolved in 25ml of 0.925 M HCL solution. What was cacl2 percentage in original sample if 22ml of 0.09312 m NAOH was used to titrated excess HCL? The answer 29.89% Who helps me
asked by Fai 
physics
A box slides down a 26° ramp with an acceleration of 1.19 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.μk =
asked by Amy Lee 
Health
What is the correlation on how society defines health and how they pursue health
asked by Kathy 
THEORY OF MACHINE
A steel bar 10 m long and 10 cm * 2.5 cm in section. It is subjected to axial pull of 250 KN. Determine the intensities of normal and tangential stresses on a plane section at 60 degree to the longitudinal axis.
asked by rajesh jain 
THEORY OF MACHINE
A mild steel rod is 150 cm long. The portion 80 cm long is 22 mm diameter and the remaining length is 20 mm diameter. If the total change in length is 0.072 cm, Determine the changes of each part in 1) Length, 2) Diameter, 3) Volume. Take poissions ratio=
asked by rajesh jain 
ENGLISH
I Need Someone to check my essay for me and give me some input please.
asked by STACY 
THEORY OF MACHINE
A steel block 200 mm * 20 mm* 20 mm is subjected to a tensile force of 40 KN in the direction of its length. Determine the change in volume, if E is 205 KN/mm² poissions ratio = 0.3
asked by rajesh jain 
Reading/Language Arts
I,m writing a paragraph about using resources responsibly.And I have to use three vocabulary words adverse,generate,apparatus. And this is what I wrote. The energy to the house I live in has had a adverse affect.Do to the apparatus not getting enough
asked by Ana 
chemistry
To what volume should you dilute 50.5 of a 4.60 solution so that 30.0 of the diluted solution contains 3.30 of
asked by Nicole 
physics
an object's acceleration is given by the function a= 2/v^2, determine an expression for the velocity of the object as a function of time. (at t= 0, v=0)
asked by Kiana 
physics
an object's acceleration is given by the function a= 2/v^2, determine an expression for the velocity of the object as a function of time. (at t= 0, v=0)
asked by Kiana 
Math
Could someone pls. help me out on the following question: find the producers surplus (to the nearest dollar ) at a price level of p=$26 for the pricesupply equation p = s(x)= 5ln(x+1) . An early response would be greatly appreciated pls. Thank you.
asked by Jim 
Algebra
How do you factor this problem x^2 + 4x = 4
asked by Cory A 
English
This sentence has an error but I'm not sure if this is correct. His father and uncle were theirselves great travelers. Is it suppose to be: His father and uncle were themselves great travelers.
asked by Emma 
Algebra
You are right I was suppose to factor the perfect squares for x^2 + 4x + 4 Thanks for you help.
asked by Cory A 
college algebra
What are the zeroes of f(x) = 2x^2 3x + 1
asked by Sydney 
Information Literacy
Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 B. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 C. E88 G2512 S57 1998, E88 G62
asked by Jordan 
math
there are 10 beads in a jar 5 are green 3 brown and 2 red if joseph randomly picks one bead three times what is the probability that all three of the beads will be brown
asked by meep 
Algebra
find the slope intercept form for 2x+6y=11
asked by linda 
chemistry
what is the ph of a soln that contain 0.01M HNO3 and 0.1M CH3COOH. for acetic acid,ka=1.8*105
asked by Anonymous 
language arts
whats a sentence for lukewarm that includes a synonym for the word to help provide a contect clue?
asked by destiny 
math
5/6 x 10/23 how do i find the simplest form. thank you
asked by kevin 
Math Urgent 1 tiny question
how would you write (11/20)^6 as a single power... don't evaluate.
asked by Sarsh 
Math
Hi. How to you solve 6.3*10^4=4x^3 on a calculator? What buttons or functions do you press on the calculator to solve this
asked by Ted 
algebra
Find the rate of change for the equation 5x+3y=2
asked by Karla Sarmienta 
algebra
write an equation in slope intercept form ha an xintercept of 6 and y intercept of 3
asked by austin 
maths
find factors of 17^100 + 32^201
asked by Anonymous 
Analytic geometry
What is the distance of the line x+6y7=0 from the origin? Please help, is my answer 7sqrt37/37 correct? If not, please help me whats the right solution
asked by Xavier 
science
What is the degree of polymerization, n, of polypropylene with a molecular weight of 600,000 g/mole?
asked by harry 
chemistry
(f) How much oil will dissolve in the surfactantwater solution if the concentration of surfactant falls in region A?
asked by schoolgirl 
chemistry
(b) Calculate the absorption edge of this material. Express your answer as a wavenumber in units of inverse meters.
asked by schoolgirl 
chemistry
The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The xray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first
asked by Anonychem 
English
Harmatan weather
asked by Anonymous 
information leteracy
Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 B. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, E88 G62 L166 1995 C. E88 G62 D225, E88 G62 L166
asked by Jun Siona 
science
What is the distance between second nearest neighbor atoms in vanadium? Express your answer in cm
asked by minis 
science
8. Which of the following related subjects is listed as a broader term? A. Palynology B. Phytogeography C. Paleontology D. Paleoclimatology
asked by Junbhe 
Math
A 100m wire weighs 1.75kg. How wide is the wire?
asked by Bethany 
science
Do you expect the solubility of in 0.1 M to be equal to, greater than, or less than that of in water? Explain
asked by minis 
information leteracy
locate the Web site for the school's accrediting body, which is listed by the U.S. Department of Education as a nationally recognized accrediting agency.
asked by Junbhe 
Information leteracy
Which one of the following services is provided through the AskaLibrarian feature in the Penn Foster Library? A. A full list of materials you’ll need for your research B. An analysis of an issue presented in your course C. A historical date or the
asked by Junbhe 
1/90
What will be the next. Result of wining machine 85 20 34 65 9078 18 83 27 17
asked by anthony 
Information Leteracy
Government documents in a library are classified according to which of the following schemes? A. Superintendent of Documents B. Dewey Decimal C. Library of Congress D. Government Printing Office
asked by Junbhe 
math
6y  12 = 2x
asked by Kirstin 
math
Write the equation in standard form, 6y  12 = 2x
asked by Kirstin 
Math
For each geometric series, calculate t6 and S6. a) 6 + 30 + 150 ... So I'm not exactly looking for an answer to this question but I was wondering why they want you to find t6 too? Would finding out t6 (via general formula) help in any way when finding S6?
asked by Crystal 
chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of
asked by ani 
MATH HELP!!!!!!
how would I solve the problem, 10=2/7n+4 ? Please I need help!!!!!!!!!!!!!!!!!!!
asked by Emi 
MATH HELP!!!!!!
how would I solve the problem, 10=2/7n+4 ? Please I need help!!!!!!!!!!!!!!!!!!!
asked by Emi 
balaji pharmacy clg ,science
why do we take 85ml of hcl for 1lit solvent according to I.P. while it is 43.02ml when it is calculated
asked by shaziya 
MATH
How would i do 11w97w=15 ?
asked by Emi 
Geology
There is also a graph i can't move it. Building Isochrons and Determining the Ages of Three Rocks Page 15 of 17 For each of the three rocks listed below follow these steps to determine the rock's age of formation. 1. Prepare an isochron by plotting the
asked by Robin 
Biology
What is the case for that sucrose is said to be nonreducing sugar?
asked by Mengistu 
Chemistry
At temperatures above 930 C, reduces to form metallic lead . The byproduct of the reaction is . Calculate the amount of lead produced (in kg) when a reactor is charged with 953.0 kg of and 1430 kg of .
asked by User 
MATH
how do i do 8t+5=6t+1 ?
asked by Emi 
math
How do I solve 5/10=x/6 for an eqivalent fraction
asked by Juliana 
math
solve x28x+11=0
asked by Anonymous 
chemestry
The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The xray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first
asked by ANoni