Questions Asked on
November 2, 2010

CHEMISTRY
Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate
asked by Riley 
Chemistry
Calculate the change in heat for the reaction SO2 + 1/2O2 > SO3
asked by Mary 
General Chemistry
If 30 L of Oxygen are cooled from 200 degrees celsius to 1 degree celsius at constant pressure, what is the new volume of oxygen?
asked by Heather 
PHYSICAL SCIENCE
WHAT IS THE KINETIC ENERGY OF A BALL WITH THE MASS OF 5KG ROLLING AT 10M/S
asked by TRISHA 
pre cal
find the exact value of tan(2sin1 3/5)
asked by Anonymous 
geometry
The circumference of a circle is approximately 28.26 cm. Find its diameter and radius
asked by Cynthia 
Chemistry
A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of 0.977 g/L at 680. torr and 84.1°C. What is the molecular formula of the compound?
asked by EM 
pre calc
Determine between which consecutive integers one or more real zeros of f(x) = –x3 + 2x2 – x – 5 are located
asked by shayla 
chemistry
DETERMINE the enthalpy for the reaction CH4(g)+NH3(g)>HCN(g)+3H2(g)
asked by ISABEL 
physics
express the angular velocity of the second hand on a clock in rev/hr
asked by pedro 
math
The length of each side of a triangle is an even number. If no two of the sides are equal, what is the smallest perimeter the triangle coul d have? ans18
asked by dhiraj 
chemestry
At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 3 2NO(g) + 2 + 2 ¾¾® 3 . If all of the nitric acid produced by this
asked by lore 
chemistry
Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold. Find the mass of the gold salt that forms when a 73.0 g mixture of equal masses of all three reactants is prepared.
asked by john 
Intro Chem
4Al(s) + 3O2(g)2Al2O3(s) Delta H reaction = 3351.4 kJ How much energy is transferred when 42.6 g of aluminum reacts to form aluminum oxide? Thanks
asked by John 
Fluid Mechanics
A tank is 180cm long, 90cm deep and 90cm wide at the top, tapering to 30cm wide at the base. If the tank is completely filled with water, calculate: a) the total weight of the water in the tank b) The total force exerted by the water on the bottom c) The
asked by Claire 
college algebra HELP
How long does it take for a deposit of $1400 to double at 10% compounded continuously?
asked by samantha 
Maths B
Hi, i was just wondering if you could help me with how to work out this question, as i have attempted and get a bit confused at the end. here it is: A cylinder is inside a sphere the sphere has a radius of R. What is the maximum volume of the cylinder?
asked by Jess 
poetry
In "There is no frigate like a book," the lines "Nor any coursers like a page/of prancing poetry" use meter to show
asked by ink 
American History
Which of the following statements most accurately characterizes immigrants' accommodation to city life in the United States around 1900?
asked by John 
physics
To push a 25.0kg crate up a frictionless surface incline angled at 25 degrees to the horizontal, a worker exerts a force of magnitude 209N parallel to the incline. As the crate slides 1.50m, how much work is done on they crate by (a) the worker's applied
asked by Lyss 
physics
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.80 m/s relative to the ground. A teammate passes the ball to him. The ball has a speed of 13.6 m/s and is moving in a direction of 32.5 degrees east of north, relative
asked by bobjahng 
calculus
A lighthouse is built on an exposed reef, 5.5 miles offshore. The shoreline is perfectly straight, and a town is located 6.5 miles downshore from the point on the shoreline nearest the lighthouse. The lighthouse keeper needs to go from the lighthouse to
asked by Anonymous 
PHYSICS HELP!
A man doing pushups pauses. His mass is 80kg. Determine the normal force exerted by the floor on each hand and on each foot. a = 40 cm b = 95 cm c = 30 cm W = mg = 784 N
asked by robin 
8th grade
why did zorna pour ketchup on her brother's hand
asked by joseline 
englishPLEASE HELP
i need help writing a thesis statement for an essay. the topic is this: use an example from romeo and juliet, write and essay analyzing Romeo's decisionmaking abilities at this point in the play. also, include a tough decision you have had to make and
asked by amy 
Physics
A novice skier, starting from rest, slides down a frictionless 35.0 degrees incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?
asked by Nick 
physics
The instruments attached to a weather balloon in the figure below have a mass(m) of 5.0 kg. The balloon is released and exerts an upward force(F) of 92 N on the instruments.
asked by eden 
science
what is the most liquid found in the earths atmosphere
asked by Anonymous 
Derviates
Find f '(x) and f ''(x). f(x) = x^(9\/ 2) e^x
asked by Michael 
Physics
A student, crazed by final exams, uses a force P of magnitude 80 N to push a 4.0 kg block across the ceiling of his room. If the coefficient of kinetic friction between the block and the ceiling's surface is 0.42, what is the magnitude of the block's
asked by Lily 
math
A tree casts a shadow 8 ft long. A 6 ft man casts a shadow 4 ft long. The triangle formed by the tree and it's shadow is similar to the triangle formed by the man and his shadow. How tall is the tree?
asked by Anonymous 
math
find the dimensions of a rectangle with a perimeter of 780m if the length is 15 more than 4 times the width.
asked by jim 
chemistry
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?
asked by Bob 
Physics
Miss E. deWater, the former platform diver of the Ringling Brothers' Circus, dives from a 20 meter high platform into a shallow bucket of water. a. State Miss E.deWater's acceleration as she is falling from the platform? b. What assumptions must you make
asked by Lilly 
chemisty help please
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres?
asked by Billy 
Calculus  integration
Integral of (2x+5sin(x))^2 dx i didn't know how to start this question so i expand the squre first and then did the rest but its wrong and i don't think my method is right. thank you.
asked by L 
Statistics
IQ test scores are normally distributed with a mean of 97 and a standard deviation of 11.An individual's IQ score is found to be 123.Find the zscore corresponding to this value
asked by Rachel 
math 5TH GRADE
write a story problem that represents each division expression.then solve the problem a. write a story problem that represents 528/24 divided
asked by Arjel 
calculus
A lighthouse is built on an exposed reef, 5.5 miles offshore. The shoreline is perfectly straight, and a town is located 6.5 miles downshore from the point on the shoreline nearest the lighthouse. The lighthouse keeper needs to go from the lighthouse to
asked by Anonymous 
physics
After 10.0 s, a spinning roulette wheel at a casino has slowed down to an angular velocity of +1.56 rad/s. During this time, the wheel has an angular acceleration of 5.45 rad/s2. Determine the angular displacement of the wheel.
asked by Danica 
Math
A cyclist and a jogger start from a town at the same time and head for a destination 11 mi away. The rate of the cyclist is twice the rate of the jogger. The cyclist arrives 1.1 h before the jogger. Find the rate of the cyclist.
asked by Heidi 
ACC
Smithson Corporation had a 1/1/10 balance in the Allowance for Doubtful Accounts of $10,000. During 2010, it wrote off $7,200 of accounts and collected $2,100 on accounts previously written off. The balance in Accounts Receivable was $200,000 at 1/1 and
asked by Shamy 
calculus
let f(x)= (x3)^2 Show that there is no value of c in (1,4) such that f(4)f(1)= (f prime of c)(41). Why doesn't this contradict the mean value theorem.
asked by Anonymous 
chem
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres? can someone
asked by Bob 
trig
the shadow of a tower is 2y meters longer at 30 degree than when it was at 45 degree. find the height of the tower
asked by priya 
geometry
make a conjecture 6,12,9,18,15
asked by Anonymous 
Chemistry helpp!
The equation for synthesis of the poisonous gas COCl2 is CO(g) + Cl2(g)COCl2 If 43.2 kJ of energy is evolved when 39.5 g of COCl2 is synthesized, what is the molar enthalpy for this synthesis? THANK YOU!
asked by Melissa 
ALGEBRA
Company A charges $55 per day plus $0.35 per mile to rent a car. Company B charges $50 per day plus $0.40 per mile. Jack wants to rent a car for three days. How many miles should Jack be traveling so that Company A is less expensive than Company B?
asked by CHANTELL 
chem
In a vehicle, H2 could be used in a fuel cell to generate energy. Hydrogen is not an energy source, but a means of transporting energy because the extraction of H2 from the logical source, H2O, takes as much energy as is returned when the gas is used. 2
asked by Andrew 
7th grade
What is 7540 over 94710 in simplist form?? Please Help! I am terrible at math!
asked by Rella 
math
true or false 1 to the negative fifth power=(1) fifth power
asked by Bryan 
Statistics
What are the steps espoused by Applied Statistics in Business and Economics for formal hypothesis testing? Explain why the sequence is important. What might happen if the hypothesis test is performed before the researcher has decided on the significance
asked by Kathy 
science
A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. How long was the ball in the air?
asked by Coby 
Algebra
What is the domain of y = 2/(x) + 2 x>0 x=0 All real numbers except x = 0 I think the domain is All real numbers except x = 0 Is that correct?
asked by Matt 
Chem
In the Molecular Geometry Lab 1. List three ways in which models used in this experiment are inaccurate representations of orbitals? 2.explain why the ClF3 molecule is not a trigonal planar molecule?
asked by Leon 
Physics
A 23.0 kg block is initially at rest on a horizontal surface. A horizontal force of 80.0 N is required to set the block in motion. After it is in motion, a horizontal force of 57.0 N is required to keep the block moving with constant speed. Find the
asked by Maria 
math
a dailly farmer produce 50 tons of rice in the first day, 57 tons in the second day, and 64 tons in the third day. the production continue to increase in the same manner up to the 28 day. what is the a) production of the farmer on the 28 day? b) what is
asked by sonia 
englishto writeacher
thanks for helping me, just saying
asked by amy 
Physics
What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east?
asked by George 
Chemistry
What is structural formula of Ester?
asked by Mr.Science 
social studies
do you think that the english bill of rights guaranteed freedom of religion? why or why not?
asked by kk 
chemistry
How many mL of 0.25 M H2SO4 can be made from 50.0mL of 0.50 M H2SO4? Also in this case, what does the capital M stand fro?
asked by James 
Economics and development studies
Define food aid critically analyse it relevance to the developing prospects of the deloping countries. Its an essay reference needed
asked by Gibbons 
statistics
if the mean of a normally distributed set of data is 100 and the standard deviation is 10, a z score of 2 corresponds to raw value of?
asked by g 
chemistry 1A
If 0.2178 g of a diprotic solid acid is neutralized by 44.81 mL of 0.0953 M NaOH, calculate the molar mass of the solid acid
asked by Jake 
Chemistry
Suppose that you had a mercuryinglass thermometer marked and calibrated to measure temperatures from 10 degrees celsius to 110 degrees celsius and you wished to measure a temperature of approximately 115 degrees celsius accurately. How might you use
asked by Chris 
9th grade
What is the total supply for US  silk, coffee, or bananas or all of them?
asked by sue 
To Theresa
In your post asking for someone to critique your writing, you included far too much personal information. It's just not safe to do that online. Please repost, but put fake information in place of your name, address, etc. Thanks.
asked by Writeacher 
science
what can an element's osition in the periodic tabletell you about it's relationship to other elements in the periodic table?
asked by teagan 
psychology
Today, most psychologists take ____ approach to human development. a nativist an empiricist a dualist an interactionist
asked by erica 
8th grade
98x^232y^2
asked by Sarah 
English
I have a few question on linking verbs: 1. I am fond of both kinds of comics. linking verb  fond? 2. Joseph Pulitzer was the first to publish color funnies. linking verb  was? 3. The sales of his newspaper were high. linking verb  sales 4. Sunday
asked by Emily 
Integration
1. [integration] (3x+7sin(x))^2 dx i tried 3 different methods of integration but all of my answers are wrong. 2. [Integration]from 0 to 5 (3w3)/(w+6)dw i divided the numerator by the denominator and then tried to solve the question but im getting the
asked by AY 
English
What is an essaystyle question, and how would I write one about a book I read? I don't have to answer the question
asked by Lala 
Physics
A woman runs a kilometer using a force of 210 N and a power output of 500 W. How long in minutes does it take this woman to complete 1 kilometer?
asked by Josh 
Global Issues
So no one's helping me with my paper, I already posted twice. But I figured out everything myself and fixed it to the best of my capability. Can I atleast get some help with the conclusion?? Should the Richer Countries of the World help Poorer Countries
asked by y912f 
5th grade
estimate the answer 189,103+504,200=693,303 estimate would= 600,000 0R 70,000? which number shows 90 millions, 7 hundred thousands, 5 thousands, one hundred and 4 ones? A.90,750,104 or B.90,705,104 ?
asked by pat 
5th grade
how does a double line graph looks
asked by alania 
science
what man made object has the greatest acceleration ?
asked by sophie 
math 5th grade
Write each percent as a reduced fraction. 35% and 65% would be 35/100 and 65/100 am I correct that these can not be reduced any further?
asked by Jill 
trig
cotx/secxtanx
asked by sady 
Chemistry
A single mole of AgNo3 weighs 169.88 grams. In order to make a 1M solution, how many grams of AgNo3 would need to be dissolved in 5oomL?
asked by Jazz 
thinking
Explain sensing process thinking
asked by Anonymous 
english
my class room is on the ground floor of main building
asked by suga 
englishms.sue or writateacher possibly help?
so, i posted an essay question like 10 minutes ago, it's under anonomys though cause i forgot to put my name, anyway, i started the intro to the essay: Blue or green? Long or short? Yes or no? At some point in your life, you will face a time where you need
asked by amy 
Physics
If a chain of 30 identical short springs linked endtoend has a stiffness of 420 N/m, what is the stiffness of one short spring? Okay, I don't understand how you would get N/m if they are linked together. Can you explain how you would get the answer?
asked by Starfallen 
7th Grade world Civics
What is the order of the courts from Highest of Authority to lowest of Autihoruty: court of international trade, U.S District courts, U.S. tax Courts,U.S court of Appeals, Bankruptcy Courts, Coourts of Veteran Appeals, Military Courts, Supreme Courts,
asked by Jacytiopa 
Chemistry
In calibrating a thermometer by setting only the freezing and boiling points, what assumptions are you making regarding the internal diameter of the thermometer and the expansion of alcohol?
asked by Chris 
Dervatives
Differentiate the following function. u = 4 root3(t) + 9 sqrt(t^9)
asked by Michael 
economics
Differeciate macroeconomics and microeconomics
asked by Gibbons 
Debate: Policy
I'm trying to find articles and information about the U.S. Armed Forces. I've been trying to find some info for hrs. could you send me some links to websites that could help me? THANKS.
asked by Jessica 
math
solve the two sided inequality and show the solutin on real number 7
asked by Samee 
Chemistry
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction given below. 2ClF3(g) + 2O2(g) Cl2O(g) + 3OF2(g) I did this: 1530 + 996  (410 + 570) = 1546. But the answer was wrong. I don't
asked by Melissa 
math
Would 147/10,000 be .0147 written as a decimal?
asked by Jill 
science
What color is a tadpole
asked by Toshi 
algebra
28=2h18
asked by George 
social studies
what are united staes citizens market economies  14 letters
asked by anonamus 
Math (extra practice)
I don't get how to do this. Use these numbers to get the answer showen below. However, don't stick numbers together. Try to get: 22 Using: 3, 6, 5, 5, 0 The teacher gave us the answer but I don't know HOW this works: 3! + (6*5)  (5+0)
asked by Bridgett 
Physical Science
Water,Shampoo,and Milk's pH are tested neutral. Why is this a good thing?
asked by Elizabeth 
physics   
A 12.0g bullet is accelerating from rest to a speed of 700m/s as it travels 20.0cm in a gun barrel. How large is it's accelerating force ?
asked by Reema 
Biochemistry
The restriction enzyme BamHI recognises the sequence 5’G^GATCC3’, cleaving between the first and second G, as indicated. Which of the following restriction enzyme recognition sequences will be cleaved to give sticky ends that are compatible with
asked by Arran 
chemistry
why does 2 mole NaOH react with 1 mole HCl in titration?
asked by Mary 
Biology
You are given the following protein sequence: NH2MetTrpTrpMetTrpMetCOOH What was the sequence of the mRNA? You must write your answer 5' to 3' direction, starting with the first nucleotide of the mRNA and ending with the last nucleotide of the mRNA.
asked by Dean 
science
Is 2Ag+S the same as Ag©üS?
asked by Rachel 
social studies
can you help me start my persuasive essay on saying no to amendment 8 2010?
asked by jenny 
10th grade
calculate the mass of the water of hydration if a hydrate loses 0.025 mol of H2O when heated
asked by Sherry 
AP European History
What were the factors responsible for western europe's domination of world trade from 16501800? i have to know 2 economic factors, 2 technological factors, and 2 institutional factors. please help this is going to be on a test that i' taking
asked by Sally Sue 
physics
how do you find worknet
asked by jon 
Math(rewrited)
Answer: 31 (writing was really small) Use: 3, 5, 5, 6, 0 How: 3! + (6*5)  (5+0)
asked by Bridgett 
Business Math
A company purchased an air conditioning system for $10,200. Shipping charges on the system are $875. Setup costs were $1,250. The system is expected to last for 5yrs and has a residual value at $2000. If I use the straightline method to calculate
asked by CC 
chemical principal
a chemist weidghed 1.25g of sodum hydroxide ,placed it in a volumetric flask and then added enough deionized water to bring the total volume to 250mL. How many moles of NaOH were added to the volumetric flask
asked by sue 
social studies
what are some details on saying no to the florida amendment 2 2010?
asked by majenta 
biology
what is a section of DNA that governs physical and behavioral traits called?
asked by gmoney 
algebra 1
the length of a rectangular swimming pool is 12 feet longer than two thirds its width. if theperimeter of the pool is 44 feet,what is the length of the pool?
asked by lula 
AP Physics B
What is the force of Friction as a 12 kg object slides down for 30 meters down a 30 degrees incline at a constant velocity?
asked by Asim 
Spanish
Sports and hobbies and pastimes What sports associate with these body parts? Mentioned many sports and activities as possible (as many... As possible) for each body part. 1. legs and feet 2. arms and hands 3. hands and fingers 4. eyes 5. head
asked by anatomy 
social studies
what are some details for saying no to amendment 8?
asked by jenny 
Physics
What is the pressure difference required to make blood flow through artery of inner radius 2.0 mm and length 0.18 m at a speed of 5.6 cm/s? I used P1P2 = speed*8*n*L/r squared n = viscosity of blood = 4 x 10e3 L = .18 m r = 2 x 10e3 m When plugged in I
asked by Dee 
CHEMISTRY..please help..thanks
If a small stream of liquid A was strongly deflected by a charged object, liquid B was moderately deflected, and liquid C was weakly deflected rank the liquids in order of polarity. (Assume densities and charges are all equal.)
asked by Lyn 
Chem help
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each transitions.? n=4 => n=3 ? v = ________________ s^1 n=5 => n=1 ? n=5 => n=4 ? n=6 => n=5 ? I got the first one correct (1.6*10^14) but the rest i am getting wrong.
asked by AMY F 
algebra : square root
I remember my teacher saying something about you square root an answer like 121 the answer is 11 and +11 But, this also is not true for all the answers Could someone tell me when I square root a number, when it is both a + and , and when it is just a + .
asked by Amy 
Algebra: i
when the square root of a # is 2 when would the answer be 2i or just square root of 2. Because when I sometimes do problems, sometimes I have to change it to #i and sometimes I have to just leave it. Would anyone know which one I use for different
asked by Amy 
Language Arts
Is there a website that can help me check my answers for SadlierOxford Vocabulary Workshop?
asked by Anonymous 
Physics
Michael Jordan was said to have a hang time of 3 seconds. Use kinematic equations to determine the height to which MJ could leap if he had a hang time of 3 seconds. Hint: You are solving for distance!
asked by Lilly 
Chemistry
A certain brand of iron suppluement contains FeSo4 7H20 with miscellaneous binders and fillers suppose 22.93 mL of KMnO4 solution used in the question above are needed to oxidize Fe2+ to Fe3+ in a 0.4927g pill. What is the mass percent of FeSo4 7H20(molar
asked by Anna 
Physics
A race car has a mass of 715 kg. It starts from rest and travels 38.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?
asked by Kevin 
math
FInd the equation of a line through the point (2,5) with a slope of 2
asked by brittany 
math
Find the equation of a line through the points (2,3)and (4,5)
asked by brittany 
chemistry
What is the new volume of the balloon, where the pressure is 0.25 {\rm atm} and the temperature is 20^\circ C .
asked by What is the new volume of the balloon, where the p 
Math
What does it mean if a line in R^3 is parallel to the xyplane but not to any of the axes. I really don't know what this means in terms of how the parametric and symmetric equations of the line should look. Please help.
asked by Kate 
science
Why are so much niches available on so much recently devastated islands?
asked by David 
Government
1. George W. Bush has called for an expansion in the role of __ in administering federal social programs a. colleges and universities b. big business c. state gov't d. federal bureaucrats e. religious organizations 2. Polling data suggest Americans __ the
asked by Amy 
algebra
Factorise 4x^27x+3= and 6x^2+10x5= Thanks Method would be goodas I am stuck.
asked by George 
math
If a person makes $30,000 in 2004 and the inflation rate is 4% annually, how much is this salary worth in the year 2008 (in terms of 2004 dollars)? What I have is 2004=30000 2005=30000x1.04=32448 then continuing through the years to 2008=35095.76
asked by m 
science
what are some facts about atom's info's and ideas?
asked by yuku 
math
whats square root of 16
asked by mike 
Math
What does ! mean in an equation? ex) 3! + (6*5)  (5+0)= 31 Well 3! has to equal 6
asked by Bridgett 
ethics
What are the consequences of violating a workplace standar? Is incarceration one of the possibilities? Why or why not? In addition, what does "relinquishing the approbation" mean? I'm not familiar with this term. Can you clarify?
asked by Anonymous 
English
I'm writing an essay on the short story, The Bouquet. It's a essay on the character of Mary Myrover. Tell me what you think... =D Mary Myrover is Charles W. Chesnutt's major character in the short story, "The Bouquet". She is a prideful, southern white
asked by Matthew 
elementary functions
factor x23x+4
asked by ariyonia 
Maths
What is dy/dx of e^x ?
asked by Hannah 
physics
for an object sliding down an uneven incline, which of the following represents the change in height necessary for the velocity to double in terms of its initial velocity V? a)2V 2(subscript)*g b)3V/g2(subscript) c)3V 2(subscript)/2g d)3V/2g e)2g/3v
asked by Asim 
math
its a function table inputoutput 3  7 0  1 3 5 8 15
asked by jennifer 
Math
My ones digit is 5 more than the tens digit. i am greater than 25 and less than 35.
asked by Ali 
CHemistry
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction given below. 2ClF3(g) + 2O2(g) Cl2O(g) + 3OF2(g) I did this: 1530 + 996  (410 + 570) = 1546. But the answer was wrong. I don't
asked by Melissa 
Seventh Grade Math
Use 6 digits from 1 through 7, each once, to make two 3digit numbers whose sum is 670 and whose difference is 376. Give both 3digit numbers in your answer. If I knew what I had to do, I could solve this problem. I don't know how to begin, though!!!!
asked by Anonymous 
Math
6*5*0*1*3*9*.5=___
asked by Bridgett 
11th grade Physics
An open pipe 0.40m in length is placed vertically in a cylindrical bucket having a bottom area of 0.10 m^2. Water is poured into the bucket until a sounding tuning fork of frequency 440 Hz, placed over the pipe, produces resonance. Find the mass of water
asked by Garry 
Physics
A skydiver has an air resistance force of 1193 N and a mass of 94 kg, what is her current acceleration? Take down to be POSITIVE and use g = 10 m/s/s. Please report your units as "m/s/s"
asked by keith 
space
How many Earth Diameters would it take to reach the Sun 93,000,000 miles away?
asked by Emma 
Physics
A rock climber part way up a cliff face drops a piton and it falls for 2.0 s before hitting the ground. How high up is he?
asked by Pauline 
Physics
A skydiver has a terminal velocity of 9.0 m/s. If they have a mass of 98, what is their k value for their air resistance? Use g = 10 m/s/s and do not report units on your answer, they should be N s/m.
asked by keith 
11th grade physics
Rachel pulls her 177N suitcase at a constant speed by pulling on a handle that makes an angle () with the horizontal. Using frictional force on the suitcase as 27N and Rachels force on 43N on the handle to calculate the net force. 1. What angle does the
asked by Zack 
Physics Help PLEASE!!!
A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this
asked by Jael 
11th grade physics
You place a box with a mass of 20kg on an inclined plane that makes a 35.0° angle with the horizontal. What is the component of the gravitational force acting down the inclined plane?
asked by Johnaton 
science
If a car is at a stop and it has to travel 2 miles and its speed is zero to sixty in 9 seconds asuming that you give it full power how fast will it be traveling when it travels 2 miles?
asked by Robert 
physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.40 103 rad/s, while the other has an angular speed of 3.10 103 rad/s. How long will it be before they meet?
asked by Danica 
sociology
Which topics or concepts interested you most in this course? How can you apply them to your life? Were there any topics you would like to explore further?
asked by Anonymous 
7th grade
4n+8=9n7
asked by Anonymous 
algebra
How many black keys are there in one octave?
asked by sammie 
english
describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description bold the adverbs and underline the adjectives what is the most effective way to determined whether a word is an
asked by shelia 
science
what is the ratio of 8gm of sugar in 500ml of water
asked by Lu 
Wolrd History AP
How can u compare the 10 abominations during the Tang Dynasty to Hammurabi's code?
asked by savanna 
english
I have to identify the adverb and the word or words the adverb modifies. 1.Some kinds of opals are extremely beautiful. 2.The ocean appears especially beautiful at sunrise. 3.On Sunday, the dogs in my neighborhood barked early. 4.No room remained at the
asked by Amy 
Ab Initio Derivative
Can anyone plz post the procedure for finding the derivative of : e^ax by ab inition method?
asked by Mos Def 
8th grade
If there were 10 grams of iron and 20 grams of water what would the total amount be?
asked by Anonymous 
science
explain why the wrong ideas are incorrect about atoms and whu people might have these misconceptions.
asked by yuku 
spanish
The class is organizing a “paella party.” Tell who is in charge of each task and use directobject pronouns. 1. ¿Quién va a preparar la ensalada? Mirta y Lidia 2. ¿Quién va a limpiar el apartamento después de la fiesta? La profe
asked by AYUDA ME PORFAVOR!! :) 
chemistry
A 13.0 mL sample of an unknown HClO4 solution requires titration with 25.2 mL of 0.180 M to reach the equivalence point. What is the concentration of the unknown HClO4 solution? The neutralization reaction is as follows: HClO4 +NaOH ===>> H2O +NaClO4
asked by john 
social studies
can someone help me start my persuasive essay on vote for amendment 2 2010?
asked by micheal 
Chemistry
What wavelength of light would be emitted when an electron in a hydrogen atom drops from energy level 5 to energy level 1?
asked by Shayne 
General Question
What are 3 types of innovations excluding writing innovation, art innovation, trade innovation, architectural innovations, and scientific innovations?
asked by Angeliqua 
FIT
Joe Nautilus has $120,000 and wants to retire. What return must his money earn so he may receive annual benefits of $20,000 for the next 14 years?
asked by Ann 
Algebra
Factorise completely: 6x^2+10x5= and 6x^2+8x3=
asked by Daniel 
History
The Arian heresy asserted what concept?
asked by Kimesha 
spanish
After the party, tell a friend who was in charge of each task. Use directobject pronouns in your answers. ¿Quién compró los mariscos? Rosa ¿Quién preparó la ensalada? Mirta y Lidia ¿Quién limpió el apartamento después de la fiesta? La profe
asked by AYUDA ME PORFAVOR!! :) 
To Taylor
Please find a socially acceptable screen name (First Name) before you post again. Thanks. =)
asked by Writeacher 
Math
Graph the circle 4x^2+4y^224x16y29=0
asked by Alicia 
English
We have to analyze an analogy for our English class. I remember a very interesting demonstration I saw several years agothe person took two glasses, one being large, the other small. He poured water into the large one about halfway, and then transferred
asked by Kayla 
physics
A 2.38 × 103 kg car requires 5.4 kJ of work to move from rest to some final speed. During this time, the car moves 28.1 m. Neglecting friction, find a) the final speed. Answer in units of m/s.
asked by Joe 
match
1. Find the x and yintercepts algebraically, showing all work for: y = –(2/3)x + 30
asked by Darcy 
chemistry
Is there a reaction? 2 NaNO3 + ht →
asked by m 
cultural diversity
List two to three characteristics of Orientalism
asked by Anonymous 
physics
It says, A plane travels 400 mi/h relative to the ground. There is a 25 mi/h wind blowing from the west to the east. Find the plane's resultant velocity as it: a. travels west: b. travels east: c. travels north: d. The plane's final destination is 1250
asked by spandana siram 
Algebra
A singleengine airplane carries enough fuel for an 8hour flight. After the airplane has been flying for 1 h, the fuel tank begins to leak at a rate that would empty the tank in 12 h. How long after the leak begins does the plane have until it runs out of
asked by Heidi 
Physics
Calculate the radial acceleration of an object at the equator of Jupiter (which takes 0.410 day to spin once), turning with the planet. (in )
asked by Carmen 
Physics Help PLEASE!!!
A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this
asked by Jael 
finanace
why is it important to go through these steps when you are planning on making a large purchase
asked by shelia 
Social Studies
Describe the geographical features of your community or region. How might they have influenced people to settle there?
asked by Ashley 
History word
Could someone explain what socialism is in a more easier way? Socialism is an economic and political theory advocating public or common ownership and cooperative management of the means of production and allocation of resources. (Wiki)
asked by Amy 
math
I was given this by my teacher for extra credit 1 _ _ _ _ _ 1 _ the blanks are numbers from 09 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations.
asked by Karl Smith 
CHEMISTRY
If a small stream of liquid A was strongly deflected by a charged object, liquid B was moderately deflected, and liquid C was weakly deflected rank the liquids in order of polarity. (Assume densities and charges are all equal.)
asked by RILEY 
Social Studies
Each European group that set up colonies settled in the specific part of the Americas. What are the two facts that lead to that generalization?
asked by Ashley 
Algebra
Carl had packed 6 crates by 8 a.m. By 11 a.m., he had packed 24 crates. Find the average rate of change in crates packed from 8 a.m. to 11 a.m.
asked by need help! 
geometry
Find the value of x Show work 3x _ = x+15 2
asked by Matthew 
math grade 11
I need help with this question determine the values in k for which the function f(x)= 4x^23x+2kx+1 has two zeros. Check these values in the original equation. i don't get how to do it please help me.
asked by priya 
help on geography!!
Where is the LCL (lifting condensation level) on the leeward side of and why?
asked by Amanda 
Organic Chemistry I
Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?
asked by Nick 
ethics
What is a workplace example of utilitarianism?
asked by Anonymous 
CHEMISTRY..please help..thanks
The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting point is 962°C, and its normal boiling point is 2212°C. What quantity of heat is required to melt 13.0 g of silver at 962°C?
asked by Jasmin 
global issues
For my pro side on the paper 'should the richer countries of the world help the poorer countries?'I have written about two pages so far. Starting with my introduction, and going in to my first two main points. I just wanted to get it all checked before I
asked by y912f 
physics
An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 2.1 m from the bottom of the table. Determine the initial speed of the
asked by Blair 
PHYSICS HELP!
A man doing pushups pauses. His mass is 80kg. Determine the normal force exerted by the floor on each hand and on each foot. a = 40 cm b = 95 cm c = 30 cm W = mg = 784 N
asked by robin 
physics
A 0.25 kg ball is thrown straight up into the air with an initial speed of 20 m/s. Find the momentum of the ball at the following locations.
asked by Blair 
US History
4. If Britain and France had not adopted a policy of appeasement, would Adolf Hitler have been as successful as he was in overruning Europe? Thanks MC
asked by mysterychicken 
Algebra 2
Suppose the experimental probability is 1/3 that a carton of eggs contains at least one broken egg. Use the simulation of 20 trials to find the experimental probability that 3 cartons selected at random contain only unbroken eggs.
asked by bc 
2nd grade math
I wrote my question wrong  Tell how to make 10 when adding 8+5
asked by amanda 
english 6th grade
what does restrictive and nonrestrictive mean???????
asked by sophie 
maths
if bisector of any angle of triangle bisects he opposite side then it is isoceles triangle
asked by abhiskar 
Physics
Suppose you discover your grandfather's collection of Caruso records from the early part of the century. These disks played at 78.0 revolutions/minute (rpm) and were 9.00in. in diameter. What was the radial acceleration of a point on the rim of such a
asked by Carmen 
Physics
Harry jumps horizontally from the top of a building that is 20.0 m high. He hopes to reach a swimming pool that is at the bottom of the building, 14 m horizontally from the edge the building. If he is to reach the pool, what must his jumping speed be?
asked by Mallory 
ELA
Where is the complete subject in this sentence, "The goal of settlement houses is the improvements of neighborhoods"?
asked by Stella 
Physics
A 3.0 kg block is being pulled with a horizontal force of 29.7 N. If the block is accelerating at 3.2 m/s/s, what is the coefficient of kinetic friction between the block and the table?
asked by keith 
Global Issues
For my pro side on the paper 'should the richer countries of the world help the poorer countries?'I have written about two pages so far. Starting with my introduction, and going in to my first two main points. I just wanted to get it all checked before I
asked by y912f 
chemistry
If the temperatures of separate 34 g samples of gold, mercury, and carbon are to be raised by 10.0°C. How much heat must be applied to each substance?
asked by Anonymous 
Foreign Languages
how do you say goodafternoon in evry laungega
asked by sophie 
Algebra
Factorise completely: 6x^2+10x5= and 6x^2+8x3=
asked by David 
math
simplify (2h6)
asked by G'Woyne 
English
I have to identify if the verb is transitive or intransitive. 1.Eddie must be the fastest runner on the team. 2. We were the largest class in the history of the school. 1.must be=intransitive 2.were=intransitive
asked by Hayley 
statistics
Given a level of confidence of 99% and a population standard deviation of 12, answer the following: (A) What other information is necessary to find the sample size (n)? (B) Find the Maximum Error of Estimate (E) if n = 78. Show all work.
asked by Valerie 
math gr.6
Does anyone has questions (page 22) from pearson math makes sense grade 6 book? Please, help. I forgot my book at school and I only need questions? Thank, you.
asked by Anonymous 
statistics
A sample of 134 golfers showed that their average score on a particular golf course was 87.43 with a standard deviation of 4.53. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 99%
asked by Valerie 
statistics
Assume that the population of heights of male college students is approximately normally distributed with mean m of 70.63 inches and standard deviation s of 6.47 inches. A random sample of 88 heights is obtained. Show all work. (A) Find the mean and
asked by Valerie 
statistics
The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of
asked by Valerie 
physics
which object will have higher inertia a rock of 20kg or a hollow ball of 22kg
asked by alo 
statistics
A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is needed to get the desired information to be
asked by Valerie 
Derviatives
Differentiate. V(x) = (3 x^3 + 3)(x^4  3 x)
asked by Michael 
physics please help!!
A beam of microwaves with = 0.7 mm is incident upon a 12 cm slit. At a distance of 2 m from the slit, what is the approximate width of the slit's image?
asked by big 
english
Could someone please check for me? I have to list the adverb and then list the word the adverb modifies. 1. She is particularly interested in sports. 2. Have you ever climbed a mountain? 3. Which part of the assignment would you do next? 1.particularlyis
asked by Zack 
physics
A pitched ball is hit by a batter at a 45° angle and just clears the outfield fence, 107 m away. If the fence is at the same height as the pitch, find the velocity of the ball when it left the bat. Ignore air resistance.
asked by malcolm 
physics
what force will accelerate a 2000kg. truck at a rate of 0.50
asked by hehe 
Chemistry
Please help me solve this problem. I don't know how to approach this problem type. C3H8(g) + 5 O2 (g)  3 CO2(g) + 4H2O(g) Conside the reaction. If you start with 7.0 moles of C3H8 (propane)and 7.0 moles O2, ________ mole(s) of carbon dioxide will be
asked by Cliff 
matematik
26 Ä±n karesi 2.26.25+25 karesi
asked by matematik 
Math
5+r=2r+3 what does r equal
asked by Maddy 
trigonometry
Prove cos4x = 8 cos^4x8 cos^2x+1
asked by Dini 
math
Cool mind teaser! 1, 6, 3, 68, 255, 654, 1379 Whats the patttern?
asked by MArie 
history
What strategy did Lee adopt in 1864, and what was his goal?
asked by Attalah 
Physics
A spring that has a force constant of 1100 N/m is mounted vertically on the ground. A block of mass 1.90 kg is dropped from rest from height of 1.65 m above the free end of the spring. By what distance does the spring compress?
asked by Pranav 
math word problem
The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the basement occasionally needs to see the President, who is on the first floor, and the Dean who is on the third floor. The stairs
asked by M.A. 
trigonometry
Graph the function f(x)=1/2sin2x+1 on the interval [2pi, 2pi]
asked by Dini 
2nd grade math
tell how to make 10 when adding 8+10
asked by amanda 
English/Grammar
Hello  I am having trouble with verbs and linking verbs...can you tell me if these are correct? I also have to pick out the predicate noun/adjective. 1. In northern Canada, the countryside seems peaceful. (LV= seems, PA = peaceful) 2. The mountain air
asked by Sasha 
orgo
Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?
asked by Nick 
biology 101
• Human culture is changing faster than humans can evolve. What evidence of rapid environmental change do you see locally, nationally, and globally?
asked by Anita fields 
english
please help me with this. it's an essay question that i'm really stuck on based on romeo and juliet. please help!!! thanks what are some decisions Romeo had to make that could possibly decide his fate, and how are his decidionmaking skills in the first
asked by Anonymous 
trigonometry
Prove: sin3xsinx/cos3xcosx=cot2
asked by Dini 
ELA
what are "how to" essays called ???
asked by S. 
Western Experience
why did the United States become so fearful of the Soviet Union after 1945? Why was the Soviet Union so fearful of the United States?
asked by Kim 
algebra
Dean is 1/4 that of Emily. In six years Emily will be two times older than Dean. How old is Dean?
asked by Robert 
algebra
the graph of the axis of symmettry of the parabola y=2x^211x+3 is best describe by which of the following equations?
asked by Randy 
math
((16(2+1))x2 5x(x=2)>5((1+x)=3
asked by traci 
algebra
The cariable x satisfies the equation 3^x.4^(2x+1)=6^(x+2). By taking logarithms of both sides,show that x=log9/log8
asked by Matteo 
5th grade math
Write 0.7 and 0.21 as factors, then multiply the factors change the product to a decimal 7/10 x 21/100 = 147/10,000 decimal would be .0147 Would that be correct?
asked by Jill 
8th grade math
What is 25% of $20.00. What is the total cost of the item? I multiplied 20 x .25 and my answer was 5.00 Then I subtracted 5.00 from 20.00 making my final answer $15.00 for the item. Please tell me if this is correct.
asked by Lane 
algebra
i need to simplify s to the tenth power over s to the sixth power
asked by Bryan 
Chemistry
Consider the following chemical equation. Na3PO4(aq) + Ca(OH)2(aq) → Ca3(PO4)2(s) + NaOH(aq) How many grams of calcium hydroxide must react to give 2.81 g of Ca3(PO4)2? please explain step by step
asked by Anonymous 
CHEMISTRY..please help..thanks
The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting point is 962°C, and its normal boiling point is 2212°C. What quantity of heat is required to melt 13.0 g of silver at 962°C?
asked by Jasmin 
algebra 2
Factor: 27X^290X+27
asked by angel 
English
I'm writing an essay on the short story, The Bouquet. It's a essay on the character of Mary Myrover. Tell me what you think... =D Mary Myrover is Charles W. Chesnutt's major character in the short story, "The Bouquet". She is a prideful, southern white
asked by Matthew 
Algebra
Hot Java Coffee Company adverties their decaffeinated coffee as 97% caffeine free as compared to their regular caffeinated coffee. If a cup of coffee is 8 ounces, how many ounces of decaffeinated coffee would you have to drink to get the equivalent amount
asked by Bob 
physics
Find the angular speed of the Earth as it spins about its axis. Give your result in rad/ses
asked by pedro 
Math
How does this (a) equal to : 326^2  0 = 2(a)(0.83) a = 64,022 m/sec^2 My calculations do not seem to be coming out properly what so ever if we are solving for 2a I believe.
asked by Reema 
physics
a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object
asked by juan 
science 9
what is the volume in liters of an aquarium that is 140cm X 30cm X 17cm
asked by Jesseca 
math
Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. Did you reach 1 for an answer? You should have. How does this number game work? Hint: Redo the number
asked by Paula 
algebra
C=3000 / 3003X
asked by Sam 
math
what is a communitative property
asked by clara 
Math 7th grade
LCM of 8x^5y^3z^2 and 26x^6y^2w^5 plz help me
asked by Max 
Western Experience
Why did the tide of WW2 began to turn in favor of the allies in 1942?
asked by Kim 
band
i need help writting three sentences for social studies
asked by post a new question 
Spelling
would "supply" follow the vcccv pattern?
asked by Mariah 
physics please help
A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides headon with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision
asked by jason 
Chem
You place a testtube of a room temperature reagent into a beaker of hot water. Which of the following statements are true? (Assume that there are no energy transfers between anything except the reagent and the water.) Choose at least one answer. a. q
asked by John 
math
a man saved a sum of 200 dinars in the first month, 250 in the second month, 300 in the third month and he continue to save at the streght. after how many month can he buy a radio instronment coastin 13500 dinars
asked by sonia 
Chemistry
If 36.00 mL of KMnO4 solution are required to oxidize 25.00mL of 0.02932 M Na2C2O4 solution what is the concentration of KMnO4?
asked by Tilly 
8th grade math
How do you find the yintercept in a graph, equation, and table?
asked by john 
5th grade
which of the fractions are bigger 5/16 or 1/2 or 1/4 or 7/16
asked by BOPIY 
geometry
in triangle GHJ, k(2,3) is the midpoint of GH, l(4,1) is the midpoint of HJ and m(6,2) is the midpoint of GJ. Find the coordinates of G,H and J. can you please show me how to find this? i don't really understand how it would be done. thank you.
asked by maria 
physics
65.0kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0kg catches the snowball. both people are on skates. the first person is intially moving forward wit ha speed of 2.50 m/s and the second
asked by bailey 
chemm
A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius
asked by ally 
12th grade
You're riding on a train that's moving at 50 km/h, and you roll a ball down the aisle at 2 km/h in the same direction as the train is moving. If a person standing on the ground near the train track could see the ball, how fast would it appear to be moving?
asked by Anonymous 
algebra HELP ASAP
If $13,000 is deposited in a bank account paying 6% compounded quarterly, what amount will be in the account after 8 years? How much interest will be earned during the 8 years? The amount after 8 years will be $___ How much interest will be earned during
asked by samantha 
Global History
How has the scientific method impact our understanding of the world and the way we study it?
asked by karla 
American Government
If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?
asked by Becky 
CHEM. help please
2 H2O (l) → 2 H2 (g) + O2 (g) 1. Without doing any calculations, which side will enthalpy favor in this reaction? Entropy? 2. What volume of water in gallons would need to be split to store the same amount of energy as found in 10.0 gallons of gasoline?
asked by Andrew 
calculus
Find all numbers b such that the average value of f(x)=2+6x−3x^2 on the interval [0,b] is equal to 3. Give your answer as a list of numbers, e.g., {1,2,3}.
asked by baby 
math
x/3 = x+10/6
asked by m 
algebra
How do you determine how to solve y=10x8,y=1/2x+5
asked by Kayla 
Economics and development studies
What is poverty? Why is important to understand the different context in which poverty manifests itself? Its an essay question Reference needed
asked by Gibbons 
American Government
If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?
asked by mary 
social studies
can you help me start my persuasive essay on saying no to the florida amendment 2 2010?
asked by majenta 
world history
how do i do a report that is due in 2 day that is on the 5 themes of geography and has to do with a current event i need help and i am having a break down how can i work like this HHHHHEEEEEELLLLLLLPPPPPPP ME
asked by heidi 
operational management
Activity Time Predecessor(s) A 3 None B 4 A C 3 B D 5 B E 10 C, D F 3 E G 6 E H 5 G, F Please assist with finding the ES, EF, LS, LF and slack time for ALL activities. also, the critical path? and, the project completion time?
asked by Jessica 
5 th grade
What is the median fo the following set of numbers? 404,650,585,435,680,342,798 please! show me the work. thank you!
asked by pat 
English
Can you please let me know if the following exercises are correct? In particular, can you help me formulate the questions more clearly? 1)Write the following dates in letter form. (Example: May 5th 1984 ...) 2) Write down questions for the underlined
asked by Franco 
Math
2x+3y+4, 1.2x+1.8x+2.6
asked by Brown 
economics and development studies
What is population? Discuss the connection between population and development. Its any essay so bibliography
asked by Gibbons