Questions Asked on
November 25, 2011

chemistry
A piston has an external pressure of 9.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.500 liters? can someone explain to me how am i supposed to do this please? Thanks :D
asked by Yuli 
chemistry
Balance the redox reactin in basic. ClO + Cr(OH)4 > CrO42 + Cl H2O + ClO > Cl + 2OH ClO has a +1 O# and Cl has a 1 O# how do I balance that. And is what Ive done so far correct? Cr(OH)4 > CrO42 Im confused on how to balance the oxygen and
asked by Monique 
geometry
Isosceles trapezoid ABCD has legs AB and CD and base BC If AB = 7y – 4, BC = 4y – 6, and CD = 8y – 18, find the value of y.
asked by Ryan 
Math
The strength S of a rectangular beam varies jointly as its width w and the square of its thickness t. If a wood beam 3 inches wide and 5 inches thick supports 300 pounds, how much can a similar beam 3 inches wide and 8 inches thick support? S=? pounds
asked by Carla 
Englishtenses
Hello I have key answers for the following tasks but I would like a native speaker to explain to me the uses of tenses here.The students have to put past tenses here. I am especially confused with the sentence beginning with The vases, which.... isn't it a
asked by Mark 
chemistry
what is the osmolarity of 0.35M KBr? how to set it up.
asked by maria 
physics
The moment of inertia of a 0.98 kg bicycle wheel rotating about its center is 0.13 kmm^2. What is the radius of the wheel? Ignore the mass of the wheel's spokes.
asked by pakilina 
Physics
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 6.00 s, it rotates 28.0 rad. During that time, what are the magnitudes of (a) the angular acceleration and (b) the average angular velocity? (c) What is the
asked by S.Jacob 
Math
When sky divers initially fall from an airplane their velocity v in miles per hour after free falling d feet can be approximated by v=60/11√d. (Because of air resistance, they will eventually reach terminal velocity.) How far do sky divers need to fall
asked by Chiquita 
physics
As shown in the figure below, a green bead of mass 50 g slides along a straight wire. The length of the wire from point to point is 0.800 m, and point is 0.500 m higher than point . A constant friction force of magnitude 0.020 0 N acts on the bead. (a) If
asked by shahla 
chemistry
Ti(s)+2Cl2(s)TiCl4(s) compute theoretical yield in moles 8 mol Ti, 8 mol Cl2
asked by sandy 
Physics help please
The space shuttle orbits at a distance of 335 km above the surface of the Earth. What is the gravitational force (in N) on a 1.0 kg sphere inside the space shuttle. Assume that the mass of the Earth is 5.98x1024 kg and the radius of the Earth is 6370 km
asked by ... 
math
Two number cubes are rolled—one red and one black. Explain why the events “the red cube shows a 6” and “the sum is greater than or equal to 10” are dependent, and find the probability. answer please :) i don't get this question
asked by Maitha 
geometry
What is the sum of the angle measures of a 37gon?
asked by Ryan 
Physics
A wheel with 50 cm diameter is moving at a speed of 20 m/sec. (a) How fast is the wheel turning? (b) How many revolutions will the wheel turn if it coasts uniformly to rest in 30 sec?
asked by pakilina 
Science
2. (a) After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel? (b) Why is the parcel now warmer than it was at sea level on the windward side (what is the source of the heat energy)? 3.
asked by Vanessa 
calculus
Calculate R8 for f(x)=8−x over [3,5]. R8=
asked by saud 
chemistry
here is a redox reaction Fe+ Cu2+„³ Fe2+ Cu Is Fe oxidized and Cu reduced ? and why. Thanks for the help:)
asked by John G 
Managerial ECON
QuadPlex Cinema is the only movie theater in Idaho Falls. The nearest rival movie theater, the Cedar Bluff Twin, is 35 miles away in Pocatello. Thus QuadPlex Cinema possesses a degree of market power. Despite having market power, QuadPlex Cinema is
asked by lost 
Calculus
Consider the illustration, which shows a rotating beam of light located 0.5 mile from a shoreline. The beam rotates at a rate of 4 revolutions per minute. How fast (in miles per minute) is the distance between the beam and the point where it strikes the
asked by Heather 
math
Helicopter A is flying due north toward a landing point 10 miles away. Helicopter B is 11 miles due east of helicopter A. About how far is helicopter B from the landing point?
asked by Anonymous 
science(chem)
How many moles of sulfate ions are present in 1.2 mol of aluminum sulfate?
asked by roy 
financial accounting
(5) Chapter 13 Problem The Torre Company has the following balances in stockholders equity on December 31st. Common Stock  $5.00 par, 60,000 issued $300,000 Additional paid in capital  common 600,000 Preferred stock  $100 par, 5,000 issued 500,000
asked by Anonymous 
accounting
jim reed manages a fleet of utility trucks for a rural county government. He's been in his job 30 years, and he knows where the angles are. He makes sure that when new trucks are purchased, the salvage is set as low as possible. Then, when they become
asked by kim 
ENGLISH CHECK
English is my second language; please help me to solve few sentences Which one is a complete sentence? Yesterday in the morning while I was asleep Cornered by deer in late evening while talking on my cell and listening radio Because I finished my home
asked by Anonymous 
Critical Thinking
Nick is chief engineer in a phosphate fertilizer plant that generates more than 1 million tons per year of gypsum, a waste collected in a nearby pile. Over many years, the pile has grown into a mountain containing 40 million tons of waste. There is little
asked by Aya 
Maths
The voltage power production of a nuclearpower plant. Is it going to be discreet or continuous ? Explain how and why?
asked by HM 
physics
The collision between a nail and hammer can be considered to be approximately elastic. Calculate the kinetic energy acquired by a 12gm nail when it is struck by a 550 gm hammer moving with an initial speed of 4.5 m/sec.
asked by pakilina 
chemistry
A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 185g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7C . What is the enthalpy of this reaction? Assume
asked by Yuli 
physics
A torque of 0.97 Nm is applied to a bicycle wheel of radius 0.35 m and mass 0.75 kg. Treating the wheel as a hoop, find its angular acceleration.
asked by pakilina 
Science
1. Calculate the temperature of the parcel at the following elevations as it rises up the windward side of the mountain: (a) 1000 __*F (b) 3000 °C (c) 6000 °C
asked by Vanessa 
CHEMISTRY
if a beaker has a rated capacity of 100ml, does it mean that it has to be filled to the bream?
asked by Anonymous 
geometry
‹mÚR = 120‹ and mÚS = 100‹. Find mÚT. The diagram is not to scale.
asked by Ryan 
chemistry
In Part I the reaction you observed was Mg(OH)2 (s) Mg2+ (aq) + 2 OH (aq). Compare the colors you observed in the experiment and answer these questions: A. Which way should the equilibrium shift when HCl is added? How do your results support your
asked by Anonymous 
Math
The electrical resistance of a wire is directly proportional to its length. If a 3foot long wire has a resistance of 1 ohm(s), find the resistance of a 9foot long wire. What is the resistance?
asked by Joe 
chemistry
Silver is electroplated at the cathode of an electrolysis cell by the half reaction Ag+(aq) + e > Ag(s) How many moles of electrons are required to electroplate 5.8g of Ag?
asked by Monique 
ebusiness
In about 100 words, explain what kinds of features of characteristics a midsize business would seek in its electronic commerce software that would not matter to a smaller business.
asked by Jessica 
spanish
What word best completes this sentence. ¿Dónde están Uds.? (Está) (Estás) (Estoy) (Estamos) en la clase de ciencias naturales.
asked by Shawn 
physics
find the rotational kinetic energy of the earth about the sun due to its orbital about the sun. The mass of the each M is 6 X 10^24 kg, the orbital radius r is 1.5 X 10^11 m and the rotational period T is 1 year. Hint, treat the earth as a point mass in
asked by pakilina 
MATH
Two number cubes are rolled—one red and one black. Explain why the events “the red cube shows a 6” and “the sum is greater than or equal to 10” are dependent, and find the probability.
asked by Maitha 
Math
i am trying to transform a piece wise function, but my problem is that the lines are so irregular i cant tell if it is correct. i can't even tell the equation of the lines I'm attempting to transform. y= 2/3 x 6 if 9
asked by Cody 
Finance
1) A typical use of managerial accounting is to: a) help investors and creditors assess the financial position of the company b) help management get a clean audit report c) help the marketing manager decide which product promotion to implement d) help the
asked by Anonymous 
chemistry
A piston is used to compress a gas from 1.0 atm to 3.5 atm. If ther volume changes from 1.5L to 0.75L, what is the final temperature, if it started at 300k? 1050K 700K 525K 300K
asked by Mario 
using a ti 89
i am attempting to graph the piecewise function y=(2/3)x6 if 9
asked by Cody 
Chemistry
You have an unlimited amount of 12M HCl stock solution. You need to neutralize 2.00 grams of NaOH by slowly adding 0.100M HCl solution. How will you prepare the proper amount of hydrochloric acid solution to add to the beaker of sodium hydroxide using a
asked by Shelby 
Grammar
1.Select the correct sentence: A) She is younger than he and I. B) She is younger than he and me. C) She is younger than him and I. D) She is younger than him and me. 2.A) The doctor and psychiatrist compared their records for they’re mutual patient. B)
asked by Cindy 
geography
1. What five countries are landlocked? Nepal, Afghanistan, Bhutan, Mongolia, and Tajikistan. 2.What is the name of the body of water that is part of the Indian Ocean between the east coast of India and the Malay Peninsula? Bay of Bengal Can you check my
asked by Reed 
Spanish
I had to put the verbs in the past tensethank you 1.Cuando el doctor me pregunta, ¿cómo te sientes?, yo respondo que no me siento bien. Cuando el doctor me pregunté, ¿como te sientiste?, yo respondí que no me sientí bien 2.Toso y estornudo
asked by Mia 
Spanish
Tell which body part hurts after doing the activity 1.Listen to too much music Me duelen las orejas. 2.The exam was difficult.Me duele la cabeza. 3. Sat in the sun for 4 hours Me duele el cuerpo. 4.Talked and drank too much yesterday Me duele la garganta.
asked by James 
Science
Assume that a parcel of air is forcd to rise up and over a 6000 foot high mountain.The initial temp of the parcel at sea level is 76.5 F, and the LCL of the parcel is 3000 feet. The DAR is 5.5 * F/1000m and the SAR is 3.3*c/1000m. Assume that condensation
asked by Vanessa 
Movie
I am currently making a short movie about "NO SMOKING!". So, I am now searching for the right music background for the movie. What do you think is the most appropriate music background for the short movie?
asked by Mandy 
physics
A street ball bearing of radius 0.50 cm is rolling along a table at 20cm/sec when it starts to roll up an incline. How high above the table level will it rise before stopping? Ignore friction losses.
asked by pakilina 
Chemistry
You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure. You allow the gas to expand against a constant external pressure of 1 atm, while the temperature remains constant. Assuming, 101.3 J/literatm, find q,w,delta E, and delta H in Joules, A)
asked by John 
Spanish
1. ¿Adónde fue Tomas ayer?(farmacia) Tomas fue a la farmacia. 2.¿Adónde fuiste ayer? Fui al rancho. 3.¿Bailaste ayer? Sí, yo bailé. 4.¿Escribiste ayer? Sí, yo escribí ayer. 5.¿Bebiste café ayer? Sí, bebí café ayer.
asked by Mia 
Finance
1) A typical use of managerial accounting is to: a) help investors and creditors assess the financial position of the company b) help management get a clean audit report c) help the marketing manager decide which product promotion to implement d) help the
asked by Anonymous 
Spanish
I had to put verbs in past tense.1.Necesité (necesito) medicine. 2.The doctor gave me a injection. I had to change (da) to past but I don’t know the past tense. 3.Después, el doctor me dó(da) una receta ir a la famacia y comprar.
asked by Mia 
ELEMENTARY STATISTICS
50 MATH PROFESSORS WERE ASKED HOW LONG IT TAKES TO GRADE A STUDENT'S HOMEWORK ASSIGNMENT. THE MEAN GRADING TIME FOR THE SAMPLE WAS 36.2 MINUTES WITH A STANDARD DEVIATION OF 4.8 MINUTES. WHAT IS THE 99% CONFIDENCE INTERVAL FOR THE MEAN GRADING TIME OF ALL
asked by DARLENE 
ALGEBRA
Determine the down payment and the amount to be financed for each home described below.(a) $460,460; 10% down The amount to be financed is $ The down payment is $ (b) $730,000; 20% down The amount to be financed is $ The down payment is $ I need help with
asked by MONICA 
physics
An unknown force pushes a 17 kilogram block across a smooth frictionless floor. Three seconds after the force is first applied to the block , the block is moving with a speed of 6 meters per second. What is the magnitude of the the unknown force in
asked by Susie 
Check english
_____ gift was purchesed to whom for who to who for whom i chose To whom ....is the right option. The advice was meant ____ you and i she and i you and me i chose option 1 you and i. Am i right ? ______ congratlated were being was being were have i chose
asked by Anonymous 
Math
Suppose that y is directly proportional to x. a. Use the given information to find the constant of proportionality k. b. Then use y=kx to find y for x=6 y=58 when x=7
asked by Carla 
Problem Solving
Nick is chief engineer in a phosphate fertilizer plant that generates more than 1 million tons per year of gypsum, a waste collected in a nearby pile. Over many years, the pile has grown into a mountain containing 40 million tons of waste. There is little
asked by Aya 
chemistry
what are the products of alkynes? Thanks.
asked by lorna 
statistics
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 20 to be 115 or more?
asked by Anonymous 
Corporate Finance
1) A typical use of managerial accounting is to: a) help investors and creditors assess the financial position of the company b) help management get a clean audit report c) help the marketing manager decide which product promotion to implement d) help the
asked by Betamou 
physics
A ball of mass m is rotated at constant speed v in a vertical circle of radius r as shown below. Find the tension in the cord when the ball is at position A and position B. (Position a is in top of the wheel, position B is on the bottom of the wheel, 180
asked by pakilina 
physics
A solid ball of radius b and mass m is released from the top of an incline of the incline is at the height h above the ground. If the ball rolls without slipping, what willl be its linear speed when it reaches the botton of the incline?
asked by pakilina 
English
essay "peace and stability in a globalized world" I need some help. Thanks
asked by Zoe 
BUSINESS COMMUNICATION
what are the 5 strategies in overcoming communication barriers? 1) minimize physical distraction 2)overcome emotional distraction well My question is that can Audience approach be included as 1 of the strategy because in the sense that it makes effort to
asked by Pallavi 
Chemistry
is H2S2O7 or H2SO4 a stronger acid?
asked by Rebecca 
BUSINESS COMMUNICATION
Can someone please help me.. What questions should an individual consider when deciding the direct and indirect approaches for a message??Can someone help me in it.. In my text book,there is only the definition of direct approach and indirect ..i have try
asked by Alyna 
English
I just wanted to know if my reporting verbs are possible and if I should include others. 1) "Let's make pizza." He suggested/proposed making pizza. (Can you think of other verbs?) 2) "Ok, I'll phone Mary for you." She agreed/promised/offered to phone Mary
asked by Henry2 
Biology
If an RR genotype is crossed with a Rr genotype, which color flowers would the offspring least likely have? a.) red b.)white I think it would be white, but I'm not sure...
asked by thomas 
English
there are 2 opthion of second person narrative in my wxam i chose the first one .. but want to make ure if i am right, you become lost in labyrnith of lies he was lost in labrinth of lies. question 2 my son's peaches are ready for harvest. the peaches are
asked by Anonymous 
English ceck
There are 2 options of second person narrative in my EXAM. I chose the first one. But want to make sure if i am right, 1) you become lost in labyrinth of lies 2) he was lost in labyrinth of lies. Question 2 1) my son's peaches are ready for harvest. 2) The
asked by Anonymous 
Math
Use of the Internet in a country is given by the function f(x)=0.485x^21.694x+0.315, where the output is in millions of users. In this formula x=6 corresponds to 1996, x=7 corresponds to 1997, and so on until x=20 corresponds to 2010. Estimate when the
asked by Chiquita 
Chemistry
You have an unlimited amount of 12M HCl stock solution. You need to neutralize 2.00 grams of NaOH by slowly adding 0.100M HCl solution.
asked by Shelby 
hydrodynamics
a kite weighs 2.50 lb and has an area of 8 squareft. The tension in the kite is 6.6 lb when the string makes an angle of 45degrees with the horizontal. For a wind of 20 mph, assume an angle of 8 degrees with the horizontal. Consider the kite essentially
asked by jolly 
Retired 71 years old
If I borrowed $78,000 from a bank and had perfect credit; How much interest would I have to pay in Dollars and cents? The loan is for 7 years
asked by Richard 
calculus
A growing boy who is 4 feet tall stands 8 feet from a 12 foot lamp post. The boy is growing at the rate of 3/4 inches per year. How fast is his shadow growing (in inches per year)?
asked by josh 
Science
what happens to water particles as you increase the temperature?
asked by Agata 
physics
which statement is true about weight 1) pull of earth on a body 2) mass of a body 3) scalar quantity 4) unit per kilogram
asked by sahar 
physics
ina cathode ray tube a beam of electron can be moved up and down by changing the poential difference of_____. a) Xplates b) cathode c) Yplates d) both X and cathodes
asked by saffa 
precalculus
solve the inequality algebraically. write the solution in interval notation. the absolute value of x2/3 is less than or equal to 4
asked by jase 
RELIGION
One might do good amal deeds in the intention of getting the reward of Jannah. However, some ulama prefer a person to do for the love and gratitude towards Allah rather than seeking Jannah. So,perhaps the best thing to do is to focus primarily on doing
asked by ASMA' 
finance
a company's current sales are $400,000 at a volume of 10,000 units. Fixed costs are $120,000 and variable costs are $30 per unit. What is the company's breakeven sales volume in units?
asked by t.b. 
math
Triangle JKM has j=28cm, k=17cm, and m=13cm. a. find the measure of the smallest angle b. find the area of the triangle
asked by Gary 
statistics
what is the standard deviation using the rule of thumb for the following set? 57 61 57 57 58 57 61
asked by amy 
finance
A manufacturing company produces 80,000 units of product A at a total cost of $2 million. Total fixed costs are $1.2 million. If the company increases production by 25% and uses a 40% markup up the price per unit will be: A. $31.50 B. $30.80 C. $51.80 D.
asked by Anonymous 
gdme
A fuel consists of 85% C, 12.5% Hydrogen, 2.5% residual matter by mass, Working from 1st principles, find lower calorific values per kg of fuel.
asked by pradip nayak 
Math Calculator help
Assume that a normal distribution has a mean of 21 and a standard deviation of 2. Use the empirical rule to find the percentage of values that lie above 23. Now I did this on the Ti 83 by using Normalcdf(5,1) and getting an answer of 0.84 and then 10.84
asked by HM 
Spanish
I had to tell what body part hurts after doing the following activity 1.watching too much television Me duelen los ojos. 2.Eat too much candy Me duele el estomago. 3. drank too much after I ran Me duelen las piernas y pies y el estomago. 4. I walked ten
asked by James 
Weighted Average
We had to do weighted averages in evolution and I'm confused. Please help! We were given allele frequencies which we had to determine heterozygosity from with the equation 2p(1p); p being allele freq. We had to do this for three different regions. The
asked by Chelsea 
Calculus
Use your calculator to approximate the integral using the method indicated, with n=100. Round your answer to four decimal places. sqrt(x+4)^dx between 4 and 0.
asked by Jane 
English
I left out these sentences. Thank you very much. 1) I would appreciate receiving some news from you. 2) Did you remember to lock the door? I remember going to primary school with my grandfather. 3) She mentioned moving into a bigger house. 4) The woman
asked by Henry2 
Math
Find the variation constant in which y varies inversely as x, and the following condition exists. Y=30 when x=1/6 K=
asked by Joe 
SpanishSraJMcGinPlease look at this
SraJMcGin,In an earlier post you had answered you said: "I can give you a more thorough explanation in the Preterit, if you would like, from a review sheet I did for my students a long time ago. You only have to ask." If I could have a copy that would be
asked by Mia 
Math
Because of the Earth’s curvature, a person can see a limited distance to the horizon. The higher the location of the person, the farther the person can see. The distance D in miles to the horizon can be estimated by D(h)=1.22√h, where h is the height
asked by Joe 
Problem Solving
Nick is chief engineer in a phosphate fertilizer plant that generates more than 1 million tons per year of gypsum, a waste collected in a nearby pile. Over many years, the pile has grown into a mountain containing 40 million tons of waste. There is little
asked by Aya 
math
A triangle has an angle whose sine is equal to sq rt 2/2. The angle is larger than 52 degrees in measure. Find the EXACT measure (in degrees) of the angle.
asked by Anil 
Math
how do i find the equation of a parabola given x intercepts x=0 and x=6 and a vertex at (3,4)?
asked by Cody 
music
i have to do research on certain music composers and their peices what is a good website to check for bio's
asked by music 
comp sci
hi i am using java to make a quiz... i am using JFrame and have radio buttons so the user can give his answer. For example: Who costared with Leonardo Dicaprio in the movie Titanic? Kate winslett. No i have a radio button in front of it and i have four
asked by gaurav 
psychology
In psychology, the study of personality focuses on: change. stability. external factors. learned factors
asked by derek 
Psychology Please Help!!
The biosocial approach suggests that gender differences are based on: a. the hormone and neurological differences between men and women. b. how men and women think about their environment. c. the physical ability of men to protect the home and of women to
asked by Anonymous 
Psychology Please Help!
Dolly is a cute little secondgrade girl with blonde curls and big brown eyes. She is very bright but not successful in school. She withdraws from her peers and is considered shy. If approached physically, she backs away and will not tolerate a hug from
asked by Anonymous 
physics
which statement is true about weight 1) pull of earth on a body 2) mass of a body 3) scalar quantity 4) unit per kilogram
asked by sahar 
Math(Stat)
If the tube were guaranteed to last for 600 hours, what percent of the tubes may have to be replaced under the guarantee
asked by Anonymous 
physics
a rolling ball covers a distance of 650m in 20 min. its speed in kilometer per hour will be what?
asked by saffa 
computer
recently developed computer technology and give its description,inventor,year invented and the purpose why it was developed.
asked by anon 
physics
A wheel is turning at a speed of 2.0 rev/sec and is allowed to coast to rest. If it does so in 30 sec, how far did it turn in the process? Assume uniform acceleration.
asked by pakilina 
physics
A ball of mass moves in a horizontal circular path of radius a with speed v as shown in the illustration below. Find the tension in the cord.
asked by pakilina 
criminal justice
What is a beat? How does a beat compare to a post?
asked by kathy 
math
If I have 4 sides of a square and I take out 3 1/2 what do i have left? it has to be a whole
asked by miranda 
Math
Lets say you got 235 on this test. Your college is in a different section of this course. Her score was 82 out of 100 on her test. In her section the mean was 72 and the standard deviation was 7. Which one of you did better?
asked by Anonymous 
Spanish
1.Fui(voy) hablé(hablo)past tense of each verb 2.cuesté(cuesta) 3.Regresé(regreso) 4.me acuesté(acuesto).Sorry but I had to do separate postings because it kept saying errorthis is all one assignemntthank you
asked by Mia 
Algebra
The area of a of trinagle with b and h is a=1/2bh find the area when b=30 and h =38 m
asked by Nicky 
english
How can I fix this sentence or make it sound better? The themes that revolve around film noir include violence, lust, greed, betrayal and depravity which are all issues that occur in this movie.
asked by jon 
Maths
x^3+a^3 Factor= (xa) what is the remaninder when you divide x^3+a^3 by (xa)? Please show me your working out
asked by Jack 
science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard
asked by mike 
precalc
1)Find the polar equation of y=5 2) Find the rectangular equation of r=3
asked by Anonymous 
physics
if a 2gk mass is accelerating at a rate of 2m/s^2 on a frictionless surface, how much force is acting on the mass?
asked by monee' 
MATH
how many 7 /8pieces can you cut ,from a beam of wood that is 16 5/8 feet long/
asked by Anonymous 
music
What is a music conductor?
asked by rebecca