Questions Asked on
September 13, 2006

  1. Physics

    An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average

    asked by Josh
  2. Limit

    Determine a region whose area is equal to the given limit. lim x-> infinity Sigma (n on top, i=1 on bottom) (2/n)*[5+(2i/n)]^10 I started with delta x=b-a/n =5-0/n =5/n The width of delta is 2/n so b-a=2 I'm not sure how you got 5-0/n The integrand looks

    asked by Rain
  3. ESL-grammar

    can anyone plz tell me what's the differences between past perfect tense and past perfect continuous tense?and tell me few examples of each one? Thank you for using the Jiskha Homework Help Forum. The past perfect tense is to show that something "had

    asked by Katrina
  4. Physics

    I really would like to give some work on this problem, but I have no idea how to do it! Please help! An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 120 m above the level ground

    asked by Josh
  5. to kill a mockingbird

    who meets with atticus the weekend before tom robinson's trial begins? why? These are questions that you should be able to answer directly from the book. Please let us know what you think, and we'll give you feedback. =)

    asked by john
  6. PHYSICS

    A body of mass 100.0g is attached to a hanging spring whose force constant is 10.0 kN/m. The body is lifted until the spring is in its unstretched state. The body is then released. Using the law of conservation of energy, calculate the speed of the body

    asked by Maggie
  7. chemistry

    If a solution of 0.10 M silver nitrate, AgNO3, is slowly added to a solution containing 0.010 M potassium iodate, KIO3, and 0.20 M sodium bromate, NaBrO3, what precipitate will form first. Will this precipitate form nearly completely (99%) before the

    asked by bria
  8. Math

    What is the exact value of sin 5ð and how do you find it? type in the google search engine.. sin(5degrees) It will compute it for you. It appears you pasted something that the ASCII didn't translate. You'll need to type out the value for the angle.

    asked by Rob
  9. math

    what is the number feared by the pythagoreans I googled "number feared by the Pythagoreans" and checked the 3rd entry. This is what I found on that web site. Find the number feared by Pythagoreans, since it lies halfway between the only two integers that

    asked by Anonymous
  10. Chemistry

    The population of San Francisco is 750,000 in an area of 49 square miles. What is the population density in San Francisco? Express your answer in people per acre. ( 1mi(squared) = 640 acres ) 49 sq mi x (640 acres/1 sq mi) =?? acres. (Note that sq mi

    asked by Jamie
  11. physics

    a 5.0kg concrete block accelerates down a 34 degree slope at 4.2 m/s^2. Find the coefficient of friction between the block and the slope. The component of weight down the slope is mg*SinTheta. The component of weight perpendicular to the slope is mg

    asked by mclanee
  12. direct variation

    could someone please help me with these problems i am having trouble. If y=36 when x =6 find x when y = 42 If y=-18 when x=6 find x when y=6 If y =12 when x= 15 find x when y =21 If y=-6.6 when x=9.9 find y when x =6.6 If y=6 when x=(2/3)find x when y=12

    asked by Teri
  13. Geometry

    I need help with vertices! The vertices of triangle FGH are F(1,1), G(3,-5),H(6,0). Find the coordinates of the vertices after a refelection over the y-axis. I'm not sure how to do this. Is there a certain formula I need to know? The reflection across the

    asked by Madi
  14. Physics

    Light travels in a straight line at a constant speed of 300,000 meter per second. What is the acceleration of light? If it has a constant speed then it's not accelerating, is it? BTW I think it's 3x10^8m/sec or 300,000,000 m/sec. It would be 300,000km/sec.

    asked by Jennifer
  15. physics

    A 2.0kg block is sitting on a 15 degree incline. The coefficient of friction is 0.22. What is the minimum force needed to cause the block to accelerate UP the slope? The force applied has to be slightly greater than the force of friction (mu(mgCosTheta))

    asked by mclanee
  16. Social Studies

    Which province in Canada is known as the "bread basket of the nation"? Alberta or manitoba

    asked by Darcy
  17. Science

    Water and gasoline are both clear liquids at room temperature. Describe one physical property and one chemical property that might be used to distinguish between them. Plz help physical:smell chemical: pH value What about density? The density of water is

    asked by Pam
  18. chemistry

    "Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area. Using these relationships and table I-1 [I'll type it out], derive (do math stuff) the dimensions of newtons, joules, and pascals

    asked by Jenn
  19. Accounting

    Patty Piper recently began a swimming pool chlorination service. She visits each of her clients on a weekly basis and applies chlorine gas and other chemicals to their pools. This service in not only convenient for her clientele but is actually less costly

    asked by Amber
  20. math

    what does 40-9 divided by 3x7+5=? Do you mean (40 - 9)/(3*7 + 5) ? If so then evaluate the numerator to get 40-9=31. Then evaluate the denominator to get 3*7+5=26. Then form the fraction using the two results. Was that the question?

    asked by hey sry cant tell u my name!
  21. math

    Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times the second by 54. Can anyone help??? We're asked: Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times

    asked by Rob
  22. physics

    A child pushes a toy box 4.0m along the fllor with a force of 6.00N directed downward at an angle of 37.0 degrees to the horizontal. a. How much work does the child do? b. Would you expect more or less work to be done if the child pulled upward at the same

    asked by fluffy
  23. math

    how do you turn fractions into decimals? what do you do with the remainders? example: 3/16---what would it be as a decimal? To turn a fraction into a decimal, divide the top number by the bottom number. Instead of a fractional remainder, you need to put a

    asked by brianna
  24. social studies

    What does A.D. and B.C. stand for and what do they mean?? A.D. stands for the Latin words, Anno Domini, which means "In the year of Our Lord." A.D. years, starting with 1 A.D. count from the supposed date of Christ's birth. B.C. stands for Before Christ

    asked by Brianna
  25. Look for poem

    I'm looking for a poem, "Ending Poem", which is written by a Puerto Rican poet. i can't find this poem,anyone can help me plzzzzzzzzzzzz? This stupid site won't let me post the link so hers the poem enjoy! I am what I am. A child of the Americas. A

    asked by Katrina
  26. social studies

    how did the new laws affect the lives of americans in the year following the civil war? the new laws affected the lives of the americans in many ways. for instance, ( um, what are the new laws? if i know i'll be able to answer the question. i'll be on

    asked by Jasmine
  27. english

    True or False: To talk in an abstract manner is to use easily understandable, concrete terms. Use http://www.answers.com to look up the words "abstract" and "concrete." Then let me know what you think. =) I think it is false? False is correct. =)

    asked by anonymous
  28. math

    how can you get the answer 16 using these numbers 4,3,2,1=16 you can not use any number more than one time. Help! 3-1=2 2x2=4 4x4=16 Bold face type show numbers in the problem. please help You need to post a question before we can help. Just click on the

    asked by lorraine
  29. english

    True or False: To talk in an abstract manner is to use easily understandable, concrete terms. I think it is false? I think so, too. I think Writeteacher answered this below, but yes, I think it's false too. The words abstract and concrete are generally

    asked by anonymous
  30. Physics

    Bob runs a marathon (26 miles) in 4 hrs. Note 1609 is 1 mile. I found the average speed miles/hour which is equal to 6.5 mi/hr. I need to find meters/second? So 1609m/mi * 6.5mi/hr * 1hr/3600sec = ??m/s correct?

    asked by Jennifer
  31. Physics

    A force of 3.00N acts through a distance of 12m in the direction of the force.Find the work done. work= force *distance If force is in newtons, distance in meters, the work unit is in joules.

    asked by fluffy
  32. health

    what are the pros and cons of eating healthy? http://www.google.com/search?q=healthful+eating&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official Lots of good websites here with oodles of good information. =) pros are living a healthy

    asked by school girl11
  33. science

    What instrument measures very high temperatures-not looking for thermometer. Depending upon how hot the temperature is that you are trying to measure, you might use a thermistor, thermocouple, or optical pyrometer, to name just three. I have used an

    asked by Connor
  34. chemistry

    "Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area. Using these relationships and table I-1 [I'll type it out], derive (do math stuff) the dimensions of newtons, joules, and pascals

    asked by Jenn
  35. math

    how do you isolate a variable? my teacher gave us questions and we are suppose to isolate the variable x PLEASE HELP! x + 3y = 11 You isolate it by moving everyting to the other side except that variable. Thus x + 3y = 11 is the same as x = -3y + 11 If tne

    asked by sophmore
  36. Math

    Can someone explain to me.... when you are graphing number sets.... when do you use open/ closed cirles.... When do you use arrows?... What are intergers??? Thanks, ummm kbye

    asked by Capi
  37. definition for science

    the definition for longitude(meridians) The easiest thing to do is to look it up in the dictionary. Go to www.dictionary.com or to www.google.com The definition of coriolis Effect

    asked by alejandra
  38. to kill a mockingbird

    which details help the reaer understand that the jail house is a symbol of maycomb's resistance to progress? These are questions that you should be able to answer directly from the book. Please let us know what you think, and we'll give you feedback. =)

    asked by john
  39. science (8th grade)

    Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content. Please do not

    asked by tonya
  40. physics

    a rock weighing 20.0N falls from a height of 16.0m and sinks 0.600 m into the ground. from energy considerations, find the average force between the rock and the ground as the rock sinks. (avg. force) x (distance sunk) is the3 work done by the soil in

    asked by Maggie
  41. Assistance please

    What are two of many unconventional tasks that law enforcement officers have taken after 9/11? I have to dicuss how it relates to homeland security and their duties. Assistance please. Since this is not my area of expertise, I searched Google under the key

    asked by Anonymous
  42. CHECK THIS OUT

    "Drug use is information that is rightfully private and only in exceptional cases can an employer claim a right to know about such use." What are your thoughts? Please be aware that we are not here to do your homework or give you answers. Once you re-post

    asked by Brianna
  43. HEALTH AGAIN!! THANKS TO EVERYONE WHO ANSWERED ME!

    DOES ANYONE KNOW ANY DISEASES ASSOCIATED WITH OBESITY?? MY HEALTH TEACHER IS WAY HARSH!! HE ASSINGED A ESSAY THE THIRD DAY BACK!! HOW CRUEL RIGHT? I WILL GIVE A THANKS IN ADVANCE TO ANYONE WHO ANSWERS MY QUESTION!! ] THANKS!!!!!;) :? Heart disease,

    asked by school girl11 :?
  44. Physics

    I need help on the following questions, I am stuck and not sure on what to do, can someone work it out and or tell me steps to obtain the answer. Thank you 1) A point charge of -0.90 microC is fixed to one corner of a square. An identical charge is fixed

    asked by Kevin
  45. math

    please can u tell me the term to term rule to this question 0,1,3,6,10,15,21 {nth} thank u Those are the triangular numbers, except your sequence started with 0 and we usually start with 1. 0= 1*(1-1)/2 term 1 1= 2*(2-1)/2 term 2 3= 3*(3-1)/2 term 3 6=

    asked by emma hamer
  46. math

    everybody help!!!!!!!!!!!!i cant post it but its a graph and it do tomarow tell me wut a variable and wat i will dooooooooooooooooooo neeeeeeeee Well we'll need to know what the question is before we'll be able to help. So what is your question? well the

    asked by chemiii
  47. nature

    hey guys i have hermot crabs that r realy realy realy sick!!!!!!!!! please help them!!!!there not moving there half way out of there shell !!!im scared!!!!!!any help? Thank you for using the Jiskha Homework Help Forum. First of all, where did you get your

    asked by chemiii
  48. PHYSICS

    WHAT MEASUREMENT IS 60KG? Mass is measured in kilograms, kg. In metric, be careful of capitalization I would use flash cards to memorize units.

    asked by 74 TAYLOR MADE
  49. cultural diversity

    My assignment is to create a table of leaders and legislation of the civil rights and black power movements. Can you help me find a good site that will help me do this. Thanks http://www.infoplease.com/spot/civilrightstimeline1.html

    asked by jessica
  50. math

    how do you measurement measure what?

    asked by kelly
  51. Science

    Why must chromosomes be duplicated before mitosis? DNA is the instruction of making proteins.To have a new cell that can work, it must has a replication of DNA.

    asked by Shay
  52. making dot arays

    what do we call #`s that can`t be arranged into 2 row arays? odd numbers. I learned that from Roger.

    asked by Kathy
  53. science

    i need ti find a type of scentists that start with the letters j,w,and y help me? Is that three scientists: one starting with j, one with w, and one with y OR one scientist with Jwr????? wich is the largest see wich is the largest sea

    asked by mallory
  54. science(8th Grade)

    List three things aboout Minerals of the Earth Crust Author Holt Rinehart & Winston

    asked by tonya
  55. arrays

    What do we call the numbers that cannot be arranged into 2-row arrays? odd numbers. I learned that from Roger. And the answer is the same as one several posts below. Giberra

    asked by stephanie
  56. biology

    what is a hypothesis? http://en.wikipedia.org/wiki/Hypothesis

    asked by jared
  57. science (8th grade)

    Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content.

    asked by tonya
  58. math homework

    helo me unscrammble hpllrdasceeo I checked three sources and found no matches for your word. Are those the correct letters? Is something missing? hello word analogies synonyms sophisticated intellrygent stupendous

    asked by karie
  59. anyone plz check if its right

    (4q+2)-(2q-3) if i simplify it will it be 2q+5? correct You can drop the parentheses and rearrange the terms to get (4q+2)-(2q-3)=4q-2q + 2-(-3)=2q+5 definately correct! i don't think that it is that hard if you drop the brackets you can't doubt it!

    asked by alejandra