
Chemistry
Explain why iron corrodes more quickly in seawater than in freshwater. I'm getting conflicting answers from searching on Google; is it because the corrosion of iron is a redox reaction, which involves a transfer of electrons, and therefore this transfer of
asked by a Canadian on May 7, 2013 
Physics
On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves that killed hundreds of thousands of people. Satellites observing these waves from space measured 800 km from one wave crest to the next and a period
asked by Anonymous on July 14, 2010 
Moral Help
This is pretty irrelevant to subjects, but I've had a problem (no, not a math problem) that I could use some good advice on. Today I received a detention for messing around with a friend during a computer apps class. It's easy as hell, so I find it easy to
asked by John on September 18, 2007 
equations
I am not great at equations... I keep practicing and working these problems and questions out but I always seem to get different answers can someone please guide me on how or tell me the correct way to work these problems out>> The linear equation y=0.15x
asked by Anna on October 25, 2009 
equations
I am not great at equations... I keep practicing and working these problems and questions out but I always seem to get different answers can someone please guide me on how or tell me the correct way to work these problems out>> The linear equation y=0.15x
asked by Anonymous on October 25, 2009 
Probability
Let X be a continuous random variable. We know that it takes values between 0 and 3 , but we do not know its distribution or its mean and variance. We are interested in estimating the mean of X, which we denote by h . We will use as a conservative value
asked by qwerty on April 21, 2014 
physics
1. You slowly lift a book of mass 2 kg at a constant velocity a distance of 3 m. How much work did you do on the book? I got 180 for this 2. A 15 kg crate is moved along a horizontal floor with a rope that makes a 30 degree angle with the horizontal. If
asked by Mei Lei on August 19, 2011 
English
Which of the following is a joining word? foreshadowing fourth for formerly Question 12 5 points Save Which of the following is a joining word? so how who Question 13 5 points Save I agree that we should do something to resolve the problem; ________ I am
asked by christopher on April 22, 2010 
math help
Posted by grant on Saturday, May 12, 2007 at 9:20am. The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. time t (hours) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 and the in the next column
asked by grant on May 12, 2007 
New holy ganges public school (Khagaria , bihar)
In a class test 5 marks are given for every correct answer and (  2 ) marks are given for every incorrect answer and no marks for not attempting any question. C scores (  5 ) marks by attempting 13 questions. How many questions has C attempted correctly
asked by Atul kumar on September 10, 2015 
Calculus
Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2), with x ≠ 2. a.Find all values of x where the graph of g has a critical value. b.For each critical value, state whether the
asked by Gary on May 8, 2015 
english
here are some questions i had to answer for the story "The Other Wife" by Colette (translated by Margaret Crosland) [[it starts with 'for two?' and ends with 'superior women']] please check them all 1. marc seguy insists on sitting in the crowded area of
asked by y912f on July 1, 2009 
6th Grade History
Questions: 1) a priest who brought Christianity to Ireland 2) a separation of the two most important branches of Christianity 3) from this country monks traveled the continent of Europe establishing monasteries. name the country? 4)an iconoclast, or image
asked by ☻i♥zee☻ on March 30, 2012 
biology
The following statement is false. Select the rewording that makes the statement true. Dalton discovered electrons inside of atoms by using thermal energy. Thompson discovered electrons inside of atoms by using cathode rays. Thompson discovered electrons
asked by Angela on September 26, 2014 
physics
please help: A repelling force occurs between two charged objects when the charges are of a. unlike signs b. like signs c. equal magnitude d. unequal magnitude
asked by physics on March 12, 2009 
math  help please
Assume that 2 cards are drawn in succession and without replacement from a standard deck of 52 cards. Find the probability that the following occurs: the second card is a 9, given that the first card was a 9.
asked by sarah on July 6, 2013 
P.E.
_______________ occurs when a person internationally uses drug improperly. A side affect Drug misuse*** Drug synergism Drug abuse Thanks!!
asked by Anonymous on May 8, 2015 
Physics
Let's say I put a very hot 100o C, 41 g cube of aluminum in 71 ml water at room temperature (20o C). What is the temperature of the water after equilibrium occurs
asked by sonia on April 25, 2011 
Chemistry
Explain why the type of metal used in creating fireworks determines the colour seen when the fireworks are set off. Discuss what occurs within the metal atoms.
asked by christine on August 18, 2010 
Chemistry
Trial:  00020 M  00020 M  H2O(mL)   Fe(NO3)3 mL  KSCN (mL)   1  5  2  3 Initially (right after combining and before any reaction occurs) the concentration of
asked by Anonymous on April 13, 2008 
Physical Education
The search for identity usually occurs during a. early childhood b. middle adulthood c. late adulthood d. adolescence
asked by lol on December 17, 2014 
speech
A hypothetical example is: A. a false example. B. not real but can happen. C. an example used to prove a hypothesis. D. has no place in a speech.
asked by Anonymous on July 7, 2013 
alegebra
Find a counterexample to show the statement is false. the whole number s are closed under division.
asked by zully on September 17, 2010 
alegebra
Find a counterexample to show the statement is false. the whole number s are closed under division.
asked by zully on September 17, 2010 
US Government
Explain why this is false. The most striking change in the U.S. government has been the decrease in the scope of its activities.
asked by Emma on September 7, 2009 
6th grade
the process of grouping of objects at random is called classification.whether ture or false.
asked by ra ny on November 13, 2008 
Economics quick question
Is this false?? Prices in a competitive market tend to favor the producer over the consumer.
asked by Taylor on May 14, 2009 
public speacking
A hypothetical example is: A. a false example. B. not real but can happen. C. an example used to prove a hypothesis. D. has no place in a speech.
asked by Buster on December 14, 2012 
Senses Science Grade 7
The semicircular canals sends impulses to the cerebellum? If false what is the correct answer? I do not know.
asked by rawr... im a dinosaur.... rawr on October 29, 2012 
math
0is larger than every negative integer.Is it ture or false.Give reason.
asked by ra ny on September 27, 2008 
Childhood Education
Low achievement and academic accompy are appropriate for non English speaking preschoolers. I am think false.
asked by Betty on September 1, 2018 
world history
with regards to the mining and agriculture industry,in the nineteenth century,whichof the following statement is false?
asked by roger on May 6, 2012 
English
A hypothetical example is: A. a false example. B. not real but can happen. C. an example used to prove a hypothesis. D. has no place in a speech. is it B
asked by Amy on April 5, 2013 
math
1.Glenn bought a car for Php600,000. The yearly depreciation of his car is 10% of its value at the start of the year. What is its value after 4 years? A. Php437,400 B. Php438,000 C. Php393,660 D. Php378,000 2. During a freefall, a skydiver jumps 16 feet,
asked by miles on June 27, 2015 
math formulas needed
Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do
asked by Tom 12 on June 18, 2013 
Stats: Joint Density Function
Let the joint density function of X and Ybe given by: f(x)={kxy^2 for 0
asked by Stephanie on October 18, 2006 
English
Why do you go to a museum? I go there to watch works of art. I go there to look at works of art. I go there to see works of art. I go there to enjoy watching pictures. I go there to see the works of famous artists. (Are the answers all grammatical? Would
asked by rfvv on March 5, 2010 
Math 301
1) Determine the approximate measure of all angles that satisfy the following. Give answers to two decimal places. Use diagrams to show the possible answers. a) cos θ = 0.42 in the domain π ≤ θ ≤ π b) tan θ = 4.87 in the domain  _ π 2 ≤ θ
asked by Izz on October 30, 2017 
Math
An isosceles triangle is inscribed inside a circle of radius 12 metres. Its height is increasing at a rate of 2 m/sec. At the instant when the height of the triangle is 18 m, at what rate a) its area changing? b) its perimeter changing? The answers are
asked by Buzz218 on October 15, 2016 
English
How do you call a meeting of teachers headed by the school principal? Thank you. I need to include the correct word in the following sentence. 1) I really hope that the teachers' conference will approve/welcome/agree with/ the decision of a partnership
asked by Henry2 on November 1, 2011 
English
I have misplaced my answers to Word Within the Word #6 Analogies. If someone knows the answers so that I do not have to redo the analogies, please post them here.
asked by E on January 14, 2015 
TO MS SUE
Please check my answers to my question, I posted this question before but no one answered or helped me. All I need is for someone to check my answers :)
asked by Bella on September 24, 2014 
Math, Can someone check my answers?
Can someone please check my answers? Tell whether the given equation has the ordered pair as a solution. 11. y = 6x;(3,16) 13. y = 4x; (2,8) 15. y = x  3/4; (2,1 1/4) Answers: 11. Not a solution 13. Has a solution 15. Has a solution
asked by Phoebe on October 31, 2014 
Algebra
This is a two part question, make sure you answer both parts: In the following subtraction problem the letters A, B and C stand for three different digits ( There are not any other operations involved in this problem). What digits should replace each
asked by Joe on October 22, 2017 
retail pharmacy assistant
when a customer has a complaint the pharmacy assistant should ? a.apologize and hope no one notices b.try to rectify the problem without telling anyone c.report the problem to the pharmacist d.assume that the customer is in error my answer is c
asked by susue on July 28, 2013 
Chemistry
Can someone please help me solve this homework problem for my chemistry class.It's my last problem and I'm stuck!:/ Thanks :) A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?
asked by Eliza on September 16, 2012 
religious study
What is “the problem of evil,” and why is it particularly problematic for Western, monotheistic religious traditions? I am able to address "the problem of evil"; however, I do not know the second part of the question; can someone kind enough to give me
asked by Nathan on December 5, 2010 
Math
I need help with the following problem: Directions: Express each answer in simplest form in terms of the given variable. Problem: An angle has measure Xº. Find the average of the measures of a complement and a supplement of the angle.
asked by David on August 20, 2007 
AlgebraReiny please explain this
Hi Reiny, I posted this problem earlier and you responded but I don't get the reasoning The problem was 2log8(x+1) = 8 you said multiply by 2 and then you put log8(x+1)=4(wasn't that dividing by 2) log8(x+1)^2 = 8 (how did you get to the power of 2
asked by Anna on December 13, 2010 
6th grade geography, France
which african nation lies to the south of Spain, across the Strait of Gibraltar? ghana. nigeria, morocco, egypt which of the following is NOT true of Spain's climate? a. due to its high elevation, the Meseta in central spain has an extremely wet climate.
asked by i♥zee on April 3, 2012 
Maths
The slope of a curve Y = f(x) is given by dy/dx=(X1)(x2)^2(x3)^3(x4)^4(x5)^5. (a) For what value or values of x does y have a local maximum/minimum? Justify your answer. I know the maximum/min occurs when dy/dx = 0, which in this case is 1,2,3,4,5 but
asked by Ss on October 19, 2014 
chemistry
write a balanced equation for the reaction that occurs when an aqueous solution of iron(II) chloride is mixed with an aqueous solution o potassium hydroxide.
asked by Lili on October 16, 2008 
chemistry
the autoionization of water, as represented by the equation below, is known to be endothermic. What can be correctly said of what occurs as the temperature of water is raised?(please explain) H2O(l)+H2O(l)H3O+(aq) + OH(aq)
asked by Anonymous on April 22, 2014 
math
what is the mode of this set of numbers:13,11,7,9,12,5 i don't think there is a mode, because no number occurs more than once. you might want to look up what mode is. ther's no damn mode umm..yur dumb "SOORY"
asked by Anonymous on February 12, 2007 
Calculus
Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum, relative minimum, or neither occurs. Assume that 'f' is continuous everywhere. f' (x) = (12x)/ ∛(x+3)
asked by Roy on November 29, 2010 
Geology
The warmest temperature occurs when? and why does the warmest daily temperature occur in midtolate afternoon rather than at the time of the highest sun angle?
asked by Pepper on March 9, 2009 
Calculus (first year uni)
Hello lim x>pi^ for cot(x) [In words,this is the limit of x as it approaches pi from the negative direction for the function cot(x). I am very confused as to how this occurs and turns out to be negative infinity. Thanks.]
asked by Anthony on September 27, 2013 
Chemistry
The energy (in joules) of an electron energy level in the Bohr atom is given by the expression: En = 2.179 x 1018/n2 J where n is the principal quantum number for the energy level. What is the frequency in Hz of the electromagnetic radiation absorbed
asked by Andy on October 21, 2013 
Physics
Can someone explain to me how I can solve this problem? This problem contains multiple parts but I'm stuck on the last two. Here is the full problem: A block of mass 2.5 kg is sliding at 10 m/s on an initially frictionless, horizontal surface. There is
asked by Bella on November 21, 2018 
Algebra 2
when expanding (x+y)^8, either an x or a y from each of the eight factors is used in the product. That means that x^3y^5 is going to occur several times and the number of times it occurs becomes the coefficient for x^3y^5. Based on this, what is the
asked by Anonymous on July 1, 2013 
Science
Approximately how long does an earhquake Pwave take to travel the first 6500 kilometers after the earthquake occurs? a. 6.5 min b. 8.0 min c. 10.0 min d. 18.5 min
asked by Angie on March 24, 2009 
Calculus
The concentration of a drug in a patient's bloodstream t hours after it is taken after it is taken is given by C(t) = 0.016t/(t+2)^2 mg/cm^3 Find the maximum concentration of the drug and the time at which it occurs.
asked by vivi on February 13, 2013 
Chemistry
what occurs when sugar is added to water.... It dissolves? the freezing point of the water will decrease and the boiling point will increase Thanks for your help i think i get it better now That't right.
asked by Kat on March 26, 2007 
calculus
c(t) = t^3 * 2^(t/2) Find the initial concentration c(0) at time t=0 min. Finds the maximum concentration of the dye sand the time when this occurs.
asked by Anonymous on April 20, 2010 
Calculus
The concentration of a drug in a patient's bloodstream t hours after it is taken after it is taken is given by C(t) = 0.016t/(t+2)^2 mg/cm^3 Find the maximum concentration of the drug and the time at which it occurs.
asked by vivi on February 13, 2013 
science
Potential to Kinetic or Kinetic to Potential. Describe an example of energy conversion that occurs during the activity. Playing in a rock band?
asked by Anonymous on December 3, 2009 
calculus
I am working on this problem and having some trouble. We're supposed to use partial fractions. The problem is: integral of dx / (x^61) . I got the values of A and D, but I am having trouble with the others. Help please!
asked by Liz on January 22, 2009 
Algebra
I'm really lose with this problem...HELP Using Cramer Rule If D=O use another method to solve 2x/35y/2=3/2 x/4+5y/2=7/2 I don't know where to begin on how to solve this problem.
asked by Gwendolyn on September 16, 2011 
Math
Write two different multiplication problems that use the factors 4 & 5. Make one problem about arrays. Make the other problem about TIMES AS MANY.
asked by Shaan on September 13, 2012 
Chemistry
Convert 355.3 kg to tons. I start the problem: 355.3 kg to 1 kg then 1 x 10 to the third power, then I have 1g. My problem is that I don't know what to do with my 1 g. What is the next step?
asked by Rachel on October 1, 2013 
BUSINESS COMMUNICATION
i had another problem concerning business communication.well i would like to know what are the effective use of external communication??i'm having problem on this question..i would be very grateful if someone can help me on it. Thank you in advance!
asked by Taskeen on November 26, 2011 
college physics
how can i find heat capacity of silver without there being a temperature in the problem the problem only lists the mass of the silver
asked by maxie j on April 22, 2010 
history
describe the moral climate in the 1920's. Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor with this specialty online right now, be
asked by Tiffani on August 1, 2007 
math,correction
Problem #1 subtract. Express your answer in simplest form (3x)/(18) minus (x)/(18) MY steps: (3xx)/(18) = (2x)/(18) and answer: (2x)/(18) Problem #18 write in simplest form. (3x^5)/(15x^12) My steps: (3)/(15) = .60 x^512 = x^7 so my answer is: .60x^7
asked by jasort20 on March 18, 2007 
AP CALC. AB
Let h be a function defined for all x≠0 such that h(4)=3 and the derivative h is given by h'(x)=(x^22)/(x) for all x≠0 a). Find all values of x for which the graph of h has a horizontal tangent, and determine whether h has a local maximum, a local
asked by Darcy on December 2, 2014 
gilbert
1.find the value of X. Simply answers that are radicals. hypotenuse is 10 sides (legs) are 6 and x. the total base is 12. 2. Find the area of the figure. Round decimal answers to the nearest tenth. sides of the triangle is 8 cm and total base is 7 cm
asked by maria on February 24, 2009 
trig
Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest whole number. Round your answers for sides c and c' to two decimal places. If either triangle is not possible, enter NONE in each corresponding
asked by janice on November 16, 2012 
Fluid Mechanics
Consider the 2D, incompressible, steady flow between parallel walls, the bottom wall is stationary and the top one is moving at a constant velocity Uw. The pressure is constant. Assuming the flow is fully developed (i.e. independent of x), we can write
asked by Alex on October 11, 2013 
English
1. The problem is so difficult that I cannot solve it. 2. The problem is too difficult for me to solve. 3. It is too difficult for me to solve the problem. (Are the three sentences the same? Do they come from the same structure? Can we omit 'that' in
asked by rfvv on May 3, 2010 
CRT/205 Final
I have two separate arguments and I am wondering if these answers are appropriate for the questions 1. State one argument made by the author. “Adoption should be advocated as an alternative to abortion for women experiencing an unwanted pregnancy”
asked by Linda on October 16, 2009 
Physics
In 1989, Carl Lewis established a world record when he ran the 100 meter dash in 9.92 seconds. What was his average speed(in m/s) for the race? Remember to include your data, equation, and work when solving this problem. I am not sure how to do this
asked by Jake on March 29, 2009 
Physics
First, I'm sorry for asking a lot of questions, however I don't know how to solve any of these problems. Can you please help me by telling me how I should solve it and what formulas should be used? I don't want the actual answers but how to solve these
asked by Stephanie on December 9, 2018 
Physics
Ok so this is just a small understanding problem, I do not want you to actually help me solve the problem, here it goes: A cylinder with mass 3kg slides on ice with its base surface at 5m/s and collides with an identical but stationary cylinder. The
asked by Alex on July 18, 2016 
Physics
Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic?
asked by Mary on March 27, 2011 
Physics
Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic?
asked by Mary on March 27, 2011 
HUM/176
in my assignment it asks me to compare and contrast information in the news stories as well as how they are presented. It also asks to answer the following questions, what links are included and how does the commentary associated with the stories and
asked by sandi on March 6, 2011 
physics
a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground
asked by vicki on February 23, 2011 
statistics
Compare the 95%(6.214,7.686) and 99% 95.944,7.956)confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs.
asked by Lisa on December 8, 2012 
physics
The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked by angela on October 11, 2010 
Biology
If there is crossing over between two gene loci A and C occurs in 20% of the tetrads and between C and B in 10% of an individual of genotype ACB/acb, what would be the percentage of gametes of double cross over types (AcB/aCb) ?
asked by Mini on March 5, 2018 
statistics
Compare the 95%(6.214,7.686) and 99% 95.944,7.956)confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs.
asked by Lisa on December 8, 2012 
physics
a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground?
asked by vicki on February 22, 2011 
physics
can you check this : a repelling force occurs between two charged objects when the charges are of a. unlike signs b. like signs c. equal magnitude d. unequal magnitude i chose B
asked by physics on March 14, 2009 
PHYSICS HELP!
The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked by Jen on October 11, 2010 
british literature
Dramatic irony occurs when a reader or an audience notices something that a character in the story or play does not know.what would the dramatic irony be in Twelfth Night,at least two examples for my essay.
asked by trish on March 5, 2010 
college physics
The space shuttle releases a satellite into a circular orbit 550 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked by Anonymous on February 22, 2010 
physics
The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs? V = m/s ??
asked by angela on October 11, 2010 
PHYSICS HELP!
The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked by lauren on October 11, 2010 
Physics
The space shuttle releases a satellite into a circular orbit 440 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked by Tatiana on October 11, 2010 
World History
All are True/False 1. After WWI, Ho Chi Minh tried to get the U.S. to support independence for Vietnam. 2. Ho Chi Minh's forces and the U.S. were allies during WWII. 3. America's First direct involvement in Vietnam came during the Johnson administration.
asked by Destiny on May 2, 2012