Questions Asked on
June 21, 2011

PHYSICS
A 900 kg car pushes a 1900 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4800 N. (a) What is the magnitude of the force of the car on the truck? (b) What is
asked by Kate 
Business Statistics
John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane
asked by CC 
geometry
Given: BD is a diameter m 1 = 100°m BC = 30° m 2 = ?degrees Given: BD is a diameter m 1 = 100°m BC = 30° m 3 = ? degrees Given: BD is a diameter m 1 = 100°m BC = 30° m 4 =? degrees Given: BD is a diameterm 1 = 100°m BC = 30° m AD = ?degrees Given:
asked by terri 
PHYSICS
The three ropes in the figure are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls as shown, with T3 = 90 N and θ = 35°. What are T1 and T2, the magnitudes of the tension forces in the
asked by Sam 
chemistry
25cm3 of a solution of 0.1mol dm3 NaoH reacts with 50cm3 of a solution of hydrochloric acid.What is the molarity of the acid
asked by jonah 
physics
As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145. A) What is the baseballs acceleration in m/s^2 and in g's? B) What is the size of force acting on it?
asked by Ralph 
Physics
"The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or
asked by Josh 
chemistry
molecular and net ionic equations for FeCl3 + Na2S
asked by chelsea 
geometry
If m angle 1 = 90°, what is m ADB?
asked by terri 
reading
Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! for the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy, nor
asked by Anonymous 
chemistry
Calculate the number of moles of FeSO4 in 25cm3 of a 0.2mol dm3 solution
asked by Richard 
chemistry
Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g
asked by jose 
physics
a driver releases an air bubble of volume 2.0 cm^3 from a depth of 15 m below the surface of a lake where the temperature is 70C.
asked by j 
physics
How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?
asked by Kate 
chemistry
consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?
asked by mema 
Physics
A flower pot is dropped out of the twentieth story window. How far does the pot drop in 3 seconds? How fast will it be moving after 7 seconds?
asked by Nicki 
stressed syllables
umbrella, homework,slowly, follow... what word of stressed syllable is different?
asked by zxania 
physics
A boy drops a stoneA, down from a cliff 480 meters high, next he throws a stoneB, 1 second later  at what initial velocity was the stoneB be thrown so as to meet the stoneA on ground at the same time? g=10 m/s2.
asked by alex 
geometry
what is the similarity ratio for two circles with areas 2pi m2 and 200pi m2
asked by Anonymous 
Integrated Physics and Chemistry
How many calories are absorbed by a copper spoon with a mass of 200 grams as it changes from 28°C to 33°C? A) 0.00027 B) 3 C) 90 D) 13,000 And this one. How do i solve this one?
asked by Destiny 
chemistry
what is the following reaction? HNO3(aq) + KOH(aq) > KNO3(aq) + H2O(l)
asked by miranda 
Math
Express the number 25 as a sum of two nonnegative numbers whose product is as large as possible.
asked by Sandhya 
physics
How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?
asked by Kate 
physics
A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ; 1.average velocity 2.average speed
asked by Saurabh 
science
A diesel engine's piston compresses 16 cm3 of fuelair mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature? Note: As long as the units for pressure
asked by jasmine 
CHEMISTRY
ASSIGN FORMAL CHARGES TO FOLLOWING STRUCTRE, HNCH3
asked by Anonymous 
math
Given the quadratic function f(x) = x2 – 12x + 36, find a value of x such that f(x) = 25.
asked by RANDA 
To Ani  re Afrikaans post
I have deleted your post because you included your email address in it. That is not a safe thing to do online. Please remember NOT to post any personal information. Please also remember to ask a specific question. No one will be able to help you if you
asked by Writeacher 
Physics
A 36 kg box hangs from a rope. What is the tension in the rope if the following are true? (a) The box moves up a steady 5.0 m/s? (b) The box has vy = 5.0 m/s and is slowing down up at 5.0 m/s2?
asked by Ashley 
math
Determine the equation of joint variation. Then solve for the missing value. x varies directly with y and z. x = 400 when y = 8 and z = 10. Find x when y = 10 and z = 12.
asked by tyler 
Physics
A hang glider and its pilot have a total mass equal to 120 kg. While executing a 360 degree turn, the glider moves in a circle with an 8m radius. The gliders mass is 10 m/s. a) what is the net force on the hang glider? b) What is the acceleration?
asked by Isaac 
math
Multiply. show complete work 2x + 4 by 5x2 – 3x – 2
asked by AJA 
Physics
1. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the
asked by Anonymous 
electric power tools
what is the purpose of a diode in a cordless drill or power screwdriver?
asked by vicki 
Phyics
If a 68kg object is being pulled across the hard floor with a horizontal force of 400N... a. What would the acceleration of the object be if it was on a frictionless floor? b. if there were friction, what would the force of friction be if it was pulled at
asked by molly 
GEOMETRY !!!
1)(5, 3) is reflected over the yaxis. What are the coordinates of the image? A) (5, 3) B) (5, 3) C) (3, 5) D) (5, 3) 2)If a translation is defined by (x, y) (x + 2, y  3), what is the image of the preimage point (3, 5)? A) (5, 8) B) (5, 2) C)
asked by Rae Rae 
business communication
Which of the following is a challenge to building goodwill? (Points: 5) Stating that the customer's criticism of the company is justified Stating that the company has made an error Answering no to the customer Making it easy for the customer to respond Is
asked by lisa 
English  Debate writting
PLS I NEED POINTS TO WRITE THIS DEBATE. Write against the motion ' The use of mobile phones by second cycle institution boarding students is essential '.
asked by Joseph 
Chemistry
A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon?
asked by Katrina 
chemistry
If 1.5 mol of each of the following compounds is completely combusted in oxygen, which one will produce the largest number of moles of H2O and why?
asked by justin 
rfvv
The dentist's is very busy, so we have to book the visit beforehand. You have to have your decayed tooth pulled out, but we have to wait for about one month? Can you wait? If you feel painful from time to time, let's go to the dentist's and if a doctor can
asked by English 
AP English Lang. & Comp.
My Assignment: Read the book, 'Animal Farm' by George Orwell. After reading the book, create a composition that examines the similarities and differences between the Russian Revolution and the events in this novel. Research any other 'rebellions' that have
asked by Jordan 
Physical Science 2
Given that iron has a density of 7.87 g/cm3, calculate the volumeof 100 g of iron and 50 g of iron
asked by John 
Nursing School
how many grams of lithium hydroxide are needed to remove 4500 grams carbon dioxide by a submarine atmospheric regulator and acts according to the following formula? 2LiOh+CO2>Li2CO3+H2O
asked by Kenzie 
statistics
Suppose you want to test the claim that mu is not equal to 3.5. Given a sample size of n = 31 and a level of significance of alpha = 0.10 when should you reject Ho? A) Reject Ho if the standardized test statistic is greater than 2.575 or less than 2.575.
asked by Brittany 
Physics
You throw a ball horizontally off of a building with a horizontal velocity of 5 m/s. What's the ball horizontal velocity 8 seconds later? How high should the building be if you want the ball to fall for a total of 12 seconds?
asked by Jennifer 
physics
1. There are three forces acting on an object, a 30N force pulling right, a 50N force pushing right, and 30N frictional force pushing left. a. What is the force of gravity on this 15kg object? b. If the object is on the ground what is the normal force
asked by molly 
chemistry
Which of the following would be the best technique to use in order to separate a soluble solid from a liquid?
asked by xavier 
Physics
Suppose a cylindrical platform with moment of inertia 0.005kg m2 is freely rotating at angular speed 10 rad/s. A disc initially, rotationally at rest with mass 0.6kg and radius 0.1 m is dropped onto the platform so that their centers coincide. The kinetic
asked by Michele 
Physics
What is the mass of a football player who 1250 N?
asked by A 
Life orentation
A clear explanation of how smoking is a human factor that may cause ill health, accidents, crises or disaster?
asked by Angel 
physics
1. An object traveling at a constant speed of 22m/s begins to experience a force of 15N in the opposite direction of its motion. (Hint given: Start by finding objects acceleration) a. How long will it take for the 8kg object to come to a complete stop once
asked by molly 
Math
1.Approximate sqrt3 by applying Newton's Method to the equation (x^23) = 0 2.The equation (x^3x2) = 0 has one real solution for 1
asked by Sandhya 
English
I corrected the two sentences as you told me. Can you please check them? Thank you. 1) Coleridge's view of nature, unlike Wordsworth's, is infused with abstract and supernatural meanings. 2) Differing from Wordsworth, Coleridge's view of nature is infused
asked by Henry 
science
a piece of wood that measures 3.0 cm by 4.0 cm by 5.0 cm has a mass of 90.og. what is the density of the wood? would the piece of wood float in water? remember the density of water is 1.00g/ml
asked by dylan 
math
Filling a tank. Two pipes are connected to the same tank. Working together they can fill the tank in 4 hrs. The larger pipe working alone can fill the tank 6 hrs less than the smaller one, HOw long would the smaller one take, working alone, to fill the
asked by AJA 
geometry
Find the total surface area of a square pyramid with a base length of 18 and height of 12
asked by Anonymous 
English
Thank you really much. Here are some more sentences I'd like you to check. 1)Victorian refers to a set of moral values which were established during the reign of Queen Victoria. They were based on personal duty, hard work, respectability and charity. )
asked by Henry 
Chemistry
3. A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon? 4. A 1.00 g Sample of C7H603 (s), us completely
asked by Katrina 
nursing
Intravenous infusions of sodium bicarbonate are often given to acidotic patients to correct acidosis and relieve the strain of rapid breathing. Explain why bicarbonate is helpful in this situation. What would happen if too much bicarbonate were given?
asked by skyler 
Physics
2. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the
asked by Molly 
Helen
How do you know which elements are solids, liquids, and gases at STP?
asked by Chemistry 
moore boring chemistry! :(
Why do groups I, II, & III easily form halide compounds? & can you explain what a halide compound is?
asked by marie(: 
Physics
Block B weighs 716 N. The coefficient of static friction between block and table is 0.31. Assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary. The figure has block B on a
asked by Chelsea 
Physics
James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest? Please show
asked by Molly 
Algebra
Write an equivalent expression without using grouping symbols (3x+5)
asked by Poochie 
chemistry
The body consist of elements, 65% oxygen is in the blood and 18% carbon. Anything in the body tends to be a compound. Is blood always 65 % oxygen and 18% carbon?
asked by mema 
AP World History
3.Explain the major tenets of Hinduism and its evolution from the Aryans to the Gupta. Please help with this question I have no idea how to answer its the last one could you give me some websites please. Thank You
asked by Nina 
math
A car travels at an average speed of 36 kilometers per hour. Write and solve an equation to predict how many hours if will take travel 432kph. It if continues of this speed.
asked by jewel padilla 
math
Joe has a collection of nickels and dimes that is worth $6.20. If the number of dimes was doubled and the number of nickels was decreased by 37, the value of the coins would be $8.85. How many nickels and dimes does he have?
asked by TAINA 
chemistry
complete and balance the following molecular equations and then write net ionic equations for each reaction. BaCl2(aq) + K2SO4(aq) KNO3(aq) + HCl(aq)
asked by chelsea 
mathematics
Given that A+B =120¢ª and CosA + Cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2
asked by CHRYSTABELLE 
boooring chemistry!!:(
Why do the halogens easily form ionic and covalent bonds? Can someone explain this to me?! :(
asked by marie(: 
math
Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. (2x/y2)^4
asked by NATASHA 
English
Could you please check these last two sentences, please? Thank you for your help. 1. Britain entered the First World War in 1914 by declaring war on Germany after the German invasion of Belgium. Peace was made at Versailles in 1919. Many British war poets
asked by Henry1 
geometry
A rectangular garden 10m * 18m . Find the area of a sidewalk that is 2m from the side of a garden ?
asked by lina 
Algebra
Perform the indicated operation if possible simplify 3/4 / (2/3)
asked by Shondra 
Physics
If a 70g swimmer pushes off a pool wall with a force of250n, what is her acceleration?
asked by A 
physics
1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force Please show work. Thanks!
asked by Molly 
Physics
A sample of serum has a mass of 54 gm and a volume of 225cm. What's the density in g/cm? I think the answer is .24g/c please correct me of I'm wrong but my ? is what would be the mass of 150 fluid ounces of this serum? What would be the volume of 1 pound
asked by Wendell 
Physics
What is the difference between velocity and acceleration?
asked by Kiran 
algebra
what is 6y square 5y 2??
asked by jo 
algebra
As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a. The sales representative here tells you they also have two floor plans available, but they only have 38
asked by Libby 
math
the equation of a line perpendicular to the line y = x  3 and containing the point (8, 2).
asked by olivia 
Physics
If a car travel at an average speed of 80 km per hr for 20 min, and then slowed down to an average speed of 50 km per hr over the next 15 min. How far would it travel in total?
asked by Jennifer 
operating system
Given that main memory is composed of three page frames for public use and that a seven page program (with pages a, b, c, d, e, f, g) requests pages in the following order:
asked by Anonymous 
Algebra
Identify the terms in each expression 43x+2xy
asked by Poochie 
Lab
When doing a virtual lab everything is exact, but why would they still ask for absolute and relative errors?
asked by Diana 
geography
what is a map?!
asked by sia 
science
cslculate the molarity of a solution of 10.0g MgCl2 in a 300.0ml of solution
asked by marcus 
Chemistry
Find the [OH] of .196 M NaOH and .262 M NH4Cl
asked by Lilly 
statistics
You are the manager at a company and are asked to present a report on the yeartodate performance of your division. What type of statistical information would you include in your report? In paticular, which descriptive statistics (mean,median, standard
asked by triplec 
business communication
A letter can: (Points: 5) influence what a person thinks about an organization. strengthen positive tone with the use of "we." help you build on an exaggerated attitude. help your customer overcome your bragging attitude. is A correct any other opinions
asked by lisa 
Business Comm 1
What is deductive order strategy?
asked by M arla 
BIS155
If data is in text file form, what step will you take to assume the data is usable and ready for analysis?
asked by Anonymous 
Physical science
A projectile spends 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height? The projectile has a range of 80 meters. What is it's horizontal velocity?
asked by Rosie 
CALCULUS
difinite integral f(x)=1/y^2dy from x=1 to x=4
asked by renee 
Spanish
Nobody wants to go with me. A) no va alquien conmigo. B) no quiere ir conmigo C) quiere ir nadie conmigo D) no quiere ir nadie conmigo. i got c. is that correct?
asked by Lindsey 
mathematics
Given that Sin(A+B)=2Cos(AB) and tan A = 1/3 , Find the exact value of tan B.
asked by ceasar 
algebra
How do I solve this problem? 1/b (2b10) = 17
asked by Anonymous 
Physical science
A projectile spends a total of 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height
asked by Rosie 
statistics
I am having trouble knowing if I add or multiply with this problem: Male Female Age 19 and under 4746 4517 Age 20 1625 1553 Age 21 1679 1627 Choose one driver at random. Find the probability that the driver is Male and 19 or under. Now, do I find the
asked by overwhelmed 
chemistry
calculate the solubility of na cl
asked by shafie 
Math
The notation [x ] stands for the greatest integer that is less than or equal to x. Calculate [1,2]
asked by Ladoo 
Chem
6.6×10−3 M Ba(OH)2 and 1.00×10−2 M BaCl2 what is [OH] of solution?
asked by Lilly 
Chem
Find [OH] of 0.325 M (NH4)2SO4 and 0.490 M NH3
asked by george 
psychology 201
The text summarizes positive psychology as being aware that humans are both creatures and creators of their personal and social worlds. What does this statement mean to you? Do you agree that humans are creatures as well as creators of their personal and
asked by TALIA 
math
Sum of 2 numbers is 1 and their product is 1/8. Find their difference.
asked by Khalid 
math
Express in terms of i. ã225 + ã49
asked by TAINA 
MATHEMATICS
a) Given that A+B =120¢ª and cos A + cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2
asked by ceasar 
anthropology
mechanism of natural selection( heritability, variation, differential reproductive success) how it works with behavioral examples
asked by ami 
geometry
How many boxes that is 5" * 4" * 3" could be placed inside a big box of 40" * 32" * 24" ??
asked by lina 
Criminology
some states created internet registeries to publicize name of people convicted of making or selling methamphetamine. (T?F)
asked by Stacy 
physics
how friction help in opposing a football
asked by jatin 
algebra
1. Imagine you are in the market for a new home and are interested in a new housing community under construction in a different city. a. The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to
asked by Libby 
Math
write as a single fraction in its lowest terms: (x2)/3 + (x+1)/4
asked by Diana 
math
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 15r + 12s = 24 30r – 24s = 48
asked by NATASHA 
Physics
1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force
asked by Anonymous 
Physics
James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest?
asked by Anonymous 
English
Can you just check if everything is correct? Thank you. 1) Focus on the two recurrent themes in Joyce’s Dubliners and explain what all the characters have in common. They focus on two recurrent themes: paralysis and epiphany. 2) Paralysis can be
asked by Henry 
MATHEMATICS
Given that Sin(A+B)=2Cos(AB) and tan A = 1/3 , Find the exact value of tan B.
asked by CHRYSTABELLE 
mathematics
Given that A+B =120¢ª and cos A + cos B = 1/¡î2 show that cos(A+B)/2 =1/¡î2
asked by CHRYSTABELLE 
math
Subtract.show complete work (2x8 – x3 + 4x2 + 5) – (8x7 + 8x3 – 4x)
asked by AJA 
algebra
how do I solve this equation? 1/b (2b10)=17
asked by Ingrid 
Physics
example that show the # part of distance and the # part of displacement can be the same for the same motion
asked by Edward 
Physics
example that show the # part of distance and the # part of displacement can be different for the same motion
asked by Edward 
CALCULUS
difinite integral f(x)=84 cube root3(x) from x=0 to x=8
asked by renee 
English
I forgot to include this sentence. Can you please check the tense choice since I switched from the past to the present? Thank you. 1) In the poem Daffodils the flowers are presented not as statically as in a painting, but alive with motion. 2.They lay
asked by Henry 
English
Could you please help me check these sentences? Thank you very much in advance. 1) The First World War, or the Great War as it used to be called, is rightly thought of as bringing cataclysmic changes in life, thought and social forms not only in Britain
asked by Henry1 
college algebra
I don't understand the steps for doing synthetic division in college algebra
asked by Louis 
math
9^x  4 X 3^x = 45. Find x In words: 9 raised to the power x minus 4 multiplied by 3 raised to the power x is equal to 45. Find x.
asked by Khalid 
HistoryCivil War
Battle of Chattanooga, last fought by Grant and Sherman together. Why was its outcome significant ?
asked by Joanne 
Social Studies
Why might the Unions advantages have not guaranteed easy victory over the Confederate?
asked by Melissa Tavares Elgamel Wong 
college chemistry
Why is iodine important to biological tissues such as the thyroid gland? Give a prediction for why iodine is added to the table salt supply. ** I have no idea! :(
asked by Jake 
Business Connunication
Is: "Learn how to analyze business audiences, improve your style, and edit thoroughly." An example os parallel structure?
asked by M arla 
English
I left out the following sentences. They are part of the same paragraph. Thank you. 6.She is not going to give up (?) her secondholiday home because the rent is very cheap and the place does her husband good because it keeps him three hundred miles away
asked by Henry 
Africa
What ir irrigation agriculture?
asked by Ofor 
English
I chose the five sentences I was most doubtful about. I really hope you can check them. 1) The First World War, or the Great War as it used to be called, is rightly thought of as bringing cataclysmic changes in life, thought and social forms not only in
asked by Henry1 
Life orientation
5 ways in which human impacts on community
asked by Katlego 
earth
If the angular velocity is increased by 17 times of the earth what will be the weight of an object at the equator?
asked by Raju prasad 
english
whats a tip to write down on improving a newspaper?
asked by sarena