Questions Asked on
April 18, 2007

  1. Physics (torque, if possible)

    An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel. The flywheel is a solid disk with a mass of 80.0kg and a dimaeter of 1.25m. It turns on a frictionless axle. Its

    asked by Anderson
  2. Physics

    Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C. The skin area of the individual is 2.0 m2 a) Assuming the emissivity is 0.80, find the net loss of radiant power from the body b)

    asked by papito Urgent help needed
  3. Chemistry

    Posted on April 12. From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference

    asked by Gabriela
  4. Trig.......

    I need to prove that the following is true. Thanks (2tanx /1-tan^x)+(1/2cos^2x-1)= (cosx+sinx)/(cosx - sinx) and thanks ........... check your typing. I tried 30º, the two sides are not equal, they differ by 1 oh , thank you Mr Reiny I'll tell my teacher

    asked by abdo
  5. Trig........

    I need to prove that the following is true. Thanks (cosx / 1-sinx ) = ( 1+sinx / cosx ) I recall this question causing all kinds of problems when I was still teaching. it requires a little "trick" L.S. =cosx/(1-sinx) multiply top and bottom by 1+sinx,

    asked by abdo
  6. Computers

    Create a class named Checkup with fields that hold a patient number, two blood pressure figures (systolic and diastolic), and two cholesterol figures (LDL and HDL). Include methods to get and set each of the fields. Include a method named computeRatio()

    asked by Andreah
  7. math

    the sum of a number and 3 times that number is 76. what is that number? PLEASE HELP ME I DON'T GET IT!!!!!!!! Mathematics is a language, so translate the English into "math" let the number be x "the sum of a number and 3 times that number is 76", .... what

    asked by Rebekka
  8. science

    the planets of the solar system revolves around the sun in orbits because the the Suns__________. A.The suns gravity B.The suns rotation C.the suns heat energy D.The suns magnetic feild Maybe C. & d. is wrong i think What keeps anything from flying off

    asked by Hot stuff
  9. Government

    True or false The heads of the executive departments form the Executive Office of the president. I think it's false. Am I right? A president's threat to grant amnesty can sometimes convince Congress to make changes in a bill to satisfy the President's

    asked by Suzi
  10. Trigonometry.

    ( tanx/1-cotx )+ (cotx/1-tanx)= (1+secxcscx) Good one! Generally these are done by changing everything to sines and cosines, unless you see some obvious identities. Also generally, it is best to start with the more complicated side and try to change it to

    asked by mo
  11. science

    what are cells made from? Please, what kind of cells? There are many kinds. Jail cells, hive cells, plant cells, animal cells, blood cells, brain cells. We need a more definitve question.

    asked by simrandeep
  12. Physics

    Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C. The skin area of the individual is 2.0 m2 a) Assuming the emissivity is 0.80, find the net loss of radiant power from the body b)

    asked by papito Urgent help needed
  13. rounding numbers

    I need to to round 423,607,492 to the ten thousands. I then need to round it to the million. Can someone help me. I will be happy to check your work. Which numeral is in the ten-thousand place in this number? Which numeral is in the million place? Once you

    asked by Don
  14. prime numbers

    Which of these is a prime number? 407, 409, 411, or 413 409 how did you get that? Suppose you are given some number N. If x

    asked by kim
  15. chem

    plz help If you carefully place a steel razor blade flat on the surface of water, the razor blade can be made to float. Explain this result, given that the density of steel is much greater than that of water. I'm not really sure what the answer is. I think

    asked by Natalie
  16. Social Studies 4

    Why was Churchill concerned about Soviet influence and control from Moscow?

    asked by Charles
  17. science science science science science science

    The moon orbits around the earth.Which of the following keeps the moon traveling in the same path each time it orbits the earth? A.energ from the surroundings B.Pull of gravity between the moon and the earth C.orbits in space are pushing the moon towards

    asked by Hot stuff
  18. Physics

    A tower clock has an hour hand 2.70 m long with a mass of 60.o kg, and a minute hand 4.50 m long with a mass of 100 kg. Calculate the total rotational kinetic energy of the two hands about the axis of rotation. Sol: I know that Kr = 1/2Iw^2 or moment of

    asked by Anderson
  19. Physics HELP!!!!!!!!

    In exercising, a weight lifter loses 0.100 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.30 x 10^5 J. (a) Assuming that the latent heat of vaporization

    asked by Mary
  20. algebra

    A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture? I am trying to

    asked by sandy
  21. Chemistry

    From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular

    asked by Gabriela
  22. Social Studies 2

    What were the closest non-Communist European countries to the Soviet Union? Finland had a long history of trade and cordial diplomatic relations with the Soviet Union. After 1984, France, Austria, the Federal Republic of Germany (West Germany), and Italy

    asked by Charles
  23. Physics

    A person's body is covered with 1.4 m2 of wool clothing. The thickness of the wool is 1.3 10-3 m. The temperature at the outside surface of the wool is 14°C, and the skin temperature is 36°C. How much heat per second does the person lose due to

    asked by papito
  24. Social Studies

    During the cold war Era (1945-1990), the United states and the Soviet Union were reluctant to become involved in direct military conflict mainly because 1. the peacekeeping role of the united nations 2. pressure from nonaligned nations 3. the potential for

    asked by Charles
  25. calc

    find the area between the x-axis and the graph of the given function over the given interval: y = sqrt(9-x^2) over [-3,3] you need to do integration from -3 to 3. First you find the anti-derivative when you find the anti-derivative you plug in -3 to the

    asked by mikayla
  26. chemistry

    I posted this question on April 16 and received lots of help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of

    asked by Julia
  27. chem

    Rank these in order of increasing freezing points: C2H6O, NaCl, NaSO4, C12H22O11 I suggest that you look them up. You will have to make an assumption at the isomer of the organic compounds that is intended, but it will not make a difference to the ranking.

    asked by Helen
  28. 5th Grade Science

    What do all desert plants have in common? A. all have prickles or thorns B. all can survive without water C. all can live without much rain D. all are poisonous to desert animals i think it is B hmmmmm? no water at all? hey k. i picked b cause all plant in

    asked by Missy
  29. math

    I don not understand how to do least common mutiples. Can I please get some help. I need to find the least common multiple of 420 and 196. there is a real neat way to do this which works for the LCM of any number of numerals. 420 196 -------| divide each

    asked by missy
  30. Formal Logic Question

    Please help me work out the following formal logic problem.... Given the premise that whoever smelt it dealt it, does it necessarily follow that whoever dealt it must also have smelt it? No. For it is possible that nobody could have smelt it, yet the

    asked by Tyler
  31. Math

    Which is a reasonable remainder when a number is divided by 7? a. 8 B. 9 C. 7 D. 5 Be sure to let us know what YOU think, and someone here will give you feedback. =) i think it is c well k. i thaught it was 5 since its under 7 cause all the others are 7 or

    asked by Missy
  32. Social studies

    I need info on Granary Burial Ground in Boston. MA. Something other than who is buried there. Thank you for using the Jiskha Homework Help Forum. In addition to the victims of the Boston Massacre, the first site is just in case you'd like to know who is

    asked by Sidney
  33. geometry

    The perimeter of an isosceles triangle is 37 in. The lengths of the two equal legs are 6 in. less than 3 times the length of the base. Find the lengths of the three sides. 37=2L+2W W=3W-6 do i have this equation wrote right when i try to solve it the

    asked by carry
  34. essay intro thesis help please

    It has been ten years since I came to America with my family, and in the summer of 2006, my parents finally decided to take me to the most fun place in the world: Disneyland. I have waited for this day since the second I found about this place. It was that

    asked by Anonymous
  35. Science

    Drew spends one weekend each month at his grandparents farm.He enjoys loking at the stars in the night sky with his grandfathers tetscope. Drew is a careful observer of the stars and he notices that the stars in the night sky are in a different location in

    asked by Hot stuff
  36. Healt

    Thank you for using the Jiskha Homework Help Forum. Not only does it depend upon size, shape, but do you want to lose, maintain or gain. Here is where you can calculate the desired number of calories: 1.

    asked by SraJMcGin
  37. Scientific Research Question

    Hello everyone, My name is Ansem, and I am doing research into the secrets of the heart. I am hoping that soem of you might be able to aid me in my research. Many years of hard work has come to fruition; this world that I govern has become a paradise,

    asked by Ansem
  38. essay intro help

    hi everyone. i was wondering if someone can take a look at my introduction paragraph& thesis and give me comments/critiques. thanks!!! Vernacular language allows a subculture to distinguish itself from the mainstream and literary culture. Vernacular lyrics

    asked by michelle
  39. geology / science

    the age of granite can be determind using radiometric dating, explain the basis for the determination of a 238 U- Pb radiometric date of 1120 Ma for a granite. I have as the answer 238 U decays to Pb with an experimental law, that is the amount of U and Pb

    asked by bex
  40. math

    I having problems understanding venn set and venn diagrams. Can someone explain this to me. For the universal set U= {0,1,2,3,4,5,6,7} And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following Sets. a. A¿B b. A U Bf c. A

    asked by Lacy
  41. Physics

    The temperature in an electric oven is 165°C. The temperature at the outer surface in the kitchen is 55°C. The oven (surface area = 1.6 m2) is insulated with material that has a thickness of 0.023 m and a thermal conductivity of 0.045 J/(sm°C). a) How

    asked by papito Urgent help needed
  42. physics

    2. an iceskater of mass 100 kg starts to glide at 10 m/s and comes to rest. how much ice is melted? assume that half the heat generated by friction is absorbed by the ice and that the ice is at its melting point. Heat from skater* .5 = Lf*massice. 1/2

    asked by michelle
  43. coomon factors

    I don't understand common factors. can someone show me how to find the greatest common factor of 385 and 1365? 385 = 5 x 7 x 11 1365 = 3 x 5 x 7 x 13 which factors are found in both? 5 x 7 so 35 is the HCF, (it's like taking the intersection of the

    asked by kim
  44. mathematics

    find the area of the region between the curve y = 3-x^2 and the line y = -1 by integrating with respect to y you first have to solve for x x=(3-y)^(1/2) then area ⌠ (3-y)^(1/2 dy from -1 to 3 ⌡ =-2/3 (3-y)^(3/2 | from -1 to 3 = -2/3(0 - 8) = 16/3 but

    asked by denisa
  45. 5th Grade Science

    The force of attraction between the Earth and an object is called? A. Magnetism B. Mass C. Energy D. Gravity hey ken. someone told me it was gravity So you think it is gravity

    asked by Missy
  46. maths

    An investor invests £20 000 over three years in a scheme which offers compound interest of 4.5%, compound annually. Which one option gives the amount of money in the scheme after 3 years, rounded to the nearest pound? A. £22 891 B. £22 700 C. £22 833

    asked by kelly

    In a town election, the winning candidate had 220 more votes than the loser. If 810 votes were cast in all, how many votes did each candidate receive? would the formula i need to solve this problem x+y+220=810 y=x-220 The equations are not correct. Close,

    asked by larry
  48. maths

    Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle

    asked by kelly
  49. math and slopes

    Help. Determine the slope of the line. The line whose equation is 3x-2y=8 Solve for y by putting y on one side and everything else on the other. -2y=8-3x. Multiply by -1. 2y = 3x -8 and divide by 2 y=(3/2)x -8/2 or y= (3/2)x -4 The form for a straight line

    asked by Wayne
  50. algebra,math,

    is this factorable its a trinomial: x^2+2x+3 No, not factorable in the real number system. b^2 -4ac is negative, so the roots are imaginary.

    asked by jacky20
  51. social studies

    how do you write an advertisment about academics, respect,teamwork and leadership Depends on what kind of ad it is. If it's a print ad, you probably want an image that brings a lot of those ideas together with few words. If it's a radio or television ad,

    asked by andrew
  52. Business Economics

    When we are given an expression for the Short Run Total Cost Curve (for eg: 8 + 3Q - 1.5Q^2 + 0.25Q^3), how do you derive expressions for the following: 1. Average Fixed Costs 2. Average Viarable Costs Curve 3. Marginal Costs Curve 4. Short Run Supply

    asked by Dan
  53. Physics - Assist pls!

    Dear All please do help me out - thanks. How much heat and light energy is produced by a 100W electric lamp in 5 minutes? Solutn = I tried this using Energy = power x time 100 x 5min = 100 x 300 sec = 30,000J - Pls do I got the answer? You will see it

    asked by Sola
  54. math

    For the universal set U= {0,1,2,3,4,5,6,7} And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following Sets. a. A ¿ B b. A U Bf c. A ¿(B U C) d. C ¿ (B ¿ A)f I assume your funny symbol is "∩", the intersection

    asked by Lacy
  55. math

    Can someone explain this to me. Determine if each conclusion is valid or invalid for the given statements. a. Some expensive books are mystery books. All mystery books are interesting. Conclusion: Some interesting books are expensive. Valid or invalid. b.

    asked by Mae
  56. math

    For the universal set U= {0,1,2,3,4,5,6,7} And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following Sets. a. A ¢¯ B b. A U Bf c. A ¢¯(B U C) d. C ¢¯ (B ¢¯ A)f U means: state all

    asked by Tammy
  57. Social Studies 3

    What did Churchill mean when he said "iron curtain"? You need to start stating what YOU think the answers are for YOUR questions. Then the tutors here will be able to give you feedback and point you in the right direction if needed. =)

    asked by Charles
  58. To Dr Russ

    I hope you come around often. We need someone with a little organic background. Mine is TOO little (and too late!).

    asked by DrBob222
  59. Math

    You can write the equation y=x+4 in different ways. Which of these is correct ? x+y=4 x=4+y y-x=4 y+4=x x=y-4 There could be a couple of ways ... Please help I do not have a clue on this. I will be very greatful if you could help in the next 30 mins xxxx

    asked by Emma
  60. Science can you help me

    Praire dogs dig alot of underground tunnel systems called "towns". They come to the surface to eat grasses. Cause all animals need to eat food.One reason prarie dogs dig alot of underground tunnel systems called wonderful "towns" is to

    asked by Hot stuff
  61. figue out this

    In many forest very little sunlight reaches the smaller plants who lived on the ground or the florest floor because the tall trees block the sunlight awy from the smaller plants.Which of the following young trees has the BEST chance to survive and

    asked by Hot stuff
  62. Algebra Packet (a lot of questions!)

    Ok, there a lot of questions from the WHOLE packet I received, so please bear with me. --------------------------------------- Factor each polynomial (#6+#11) 6. 2x^2+11x+15 11. 36x^2-49 --------------------------------------- The Nut House sells mixed

    asked by Emily
  63. Biology

    For any given age and body surface area, men have a greater MVV than women. Give one anatomic or physiologic reason why. Is it because men tend to be more stronger and athletic than women, thus allowing respiratory muscles to be stronger Men are larger

    asked by JYD
  64. Chemistry

    Explain how a non metal atom becomes negative. Lose an electron, become negative. Bob Pursley isn't at his computer right now but I don't think he would mind if I explained that ADDING an electron to a non-metal makes it become negatively charged. I agree

    asked by Mani
  65. Accounting

    Can someone give me good websites detailing the history of the IFRS (International Financial Reporting Standards)? Or just give me a basic outline please? Boss wants me to write an essay about it, I am also checking libraries, a few pointers would be great

    asked by RyaN
  66. Physics

    Is it impossible to polarize a longitudinal wave? Explain. Longitudinal waves are polarized in the direction of propagation, they vibrate in that direction. But in the usual sense of polarization (Electric component of light), it is not possible.

    asked by Caleb
  67. Social Studies

    >Blockade of Berlin >Operation of the Berlin Airlift >Organization of the Warsaw Pact >Construction of the Berlin Wall These events of the cold war are examples of 1. efforts to prevent military conflict between the superpowers 2. situations that increased

    asked by Charles
  68. Science again...

    Thick bark helps a tree survive when a. the rain washes away the soil b. the weather is colder than normal c. there are storms with strong winds d. the is little sunlight avaliable I think it is b If you don't know what the right answer is in a multiple

    asked by Missy
  69. math

    Can someone explain this to me. Determine if the given rule is a function, and if not, explain why. a. People assigned to their fathers b. Numbers assigned to the sums fo their digits. c. Mothers assigned to their children. a) Here the rule defines a

    asked by Priscilla
  70. math

    HELP HELP I need to work this questions. Six hundred pennies are placed in a row. If every other penny is replaced by a nickel and every third coin us replaced by a quarter, what is the final value of the 600 coins? Take twelve pennies. Replace every other

    asked by leslie
  71. geology / science

    would you be able to suggest a good website for me to answer this question granite is intrusive , felsic rock, which may be produced by partial melting or fractional crystallization, Explain how these processes produce felsic magmas from more mafic parent

    asked by bex
  72. math

    I need help with slopes and lines. Determine the slope of each line a line through points (-1, 2) and (2, -7) Slope of a line through two points (x1, y1) and (x2, y2) is (y2 - y1)/(x2 - x1). So substituting the given points we have (-7 - 2)/(2 - (-1)) i.e

    asked by Tammy
  73. Forensic Science

    Hello. I have to right a Forensic investigation paper on modern crimes and I wanted to know if anyone knew of any interesting modern crimes, except 9/11 or oj simpson or anna nicole smith. Please Help. Thanks! School shootings -- in the Pennsylvania Amish

    asked by Janet
  74. Science

    A student goes fishing in the bay.He catches a few fish and dicides to put them with other fish in a small fishpond behind his house.The next day he notices that all the new fish have died. Which is the MOST LIKELY reason the fish died? A.They did not have

    asked by hot stuff
  75. math

    Factoring two more equations 49x^2-100z^2 32t^2-50 I'll give you a few hints. What number squared equals 49? What number squared equals 100? (?x + ?z)(?x - ?z) Fill in the question marks and you should have your factors. Factor out 2 on the second one to

    asked by Chris
  76. Algebra 2

    How do I write equations for geometric sequences? example question: 1, 3/2, 9/4, 27/8 an= a(n-1) * r^n where r is the value of dividing one term by the term before. For instance, in the above, ao= 1, r= a3/a2= (27/8)/(9/4)= 3/2 a1= 1*3/2 a3= 1*(3/2)^3=

    asked by NJ
  77. Social Studies 1

    Which countries separated the Soviet Union from Western Europe? The so-called Warsaw Pact countries. Use Google or anothe search engine for references that will provide their names.

    asked by Charles
  78. Algebra


    asked by Antonio
  79. geometry

    The perimeter of an isosceles triangle is 37 in. The lengths of the two equal legs are 6 in. less than 3 times the length of the base. Find the lengths of the three sides. 37=2L+2W W=3W-6 do i have this equation wrote right when i try to solve it the

    asked by carry
  80. Physics

    Why is it desirable to use monochromatic light when studying polarization by reflection? It is desirable to reduce the number of variables in the experiment. It is not absolutely necessary.

    asked by Caleb
  81. math

    2r+4=10 Well r=3 so that means 2xr=6 and 6+4=10. Hint: whenever a number and letter are close together you have to multply thme like 2r. The value for r is indeed 3! Another way to think about this problem is to start by subtracting 4 from both sides of

    asked by Bonnie

    Mrs. Browns class is studdying how the path of the suns crossing the sky changes during the day.Each hour a pair of student goes outside to a square Mrs. Brown painted on the ground or sidewalk.One student stands a ruler upright in the center of a painted

    asked by Hot stuff
  83. Social Studies

    During the cold war, the soviet union and the democracies in the west competerd for influrence in the middle east beacuse of its 1. strategic location and valuable resources. 2. vast fertile farmlands and rivers 3. large well-educated population 4.

    asked by Edward
  84. science

    What can scientist learn from moon rocks? A. The moon's water supply evaporated in recent years B. The moon is denser than earth C. The moon is older than the Earth D. The moon and earth are made of similar material let me see A and C are wrong cause a say

    asked by Missy
  85. Math1

    Directions:Solve and graph the inequality using words. Problem: 1.)2x>-4 and x-42x+1 and -4x

    asked by margie
  86. analogy

    what do the words have in common? body:emollient::soul: sand paper, cacophony, kind word, crotchet, anger An emollient soothes the body. What soothes the soul? kind word?

    asked by Jordan
  87. English-Lit

    We have a theme for English-lIt it is OVERCOMING OBSTACLES. We were assigned a homework assignment,15 obstacles of the world. My parents don't understand how to do it. because it has been so long since they have gone to school. I really need help

    asked by Eastan
  88. Biology

    Is it possible for a person to have a normal vital capacity but an abnormal FEV1.0?

    asked by JYD
  89. Elem. Ed.

    Can you help with this question? Which would be the best answer? I am thinking (1) is the best answer. Am I right? Involving parents in children's health and safety education programs: 1. encourages consistency of information and practices. (or) 2. is

    asked by Keisha
  90. math

    Trying to factor 2 equations 3x2+9x-30 4x2-4x-48 I assume you mean 3x² + 9x - 30 which on this board most people write as 3x^2 ... =3(x^2 + 3x - 10) =3(x+5)(x-2) do the same thing for your second question, factor out the 4 first, then it's easy Let me

    asked by Chris
  91. ALGEBRA 1

    Reiny Thanks for your help. But you lost me. I still end up with +/- 7 How did you get 1/16 I am con fused here. no 2 you have to take 1/2 of 3/2 which would be 3/4. then 3/4 squared is 9/16 so line 4 should read x^2 - (3/2)x + 9/16 = -1/2 + 9/16 . . .

    asked by DANIELLE
  92. Foreign Languages

    Figue out my language! Clues- 1.We speak this language in Belguim 2.Belguim is in Europe my language yes is yah (yaah) 4.It starts with a flem 5.It ends with a ish Now try to figure out my language flemish correct but you spelled it wrong Thank you

    asked by Hot stuff
  93. History

    Does anyone know what happened or have any good information about what happened to John F. Kennedy? OH! and if anyone has any clear pictures that would be good too!! Here are some good sites.

    asked by Alexandra
  94. bablylonian numeration

    can someone tell me how to write 372 in numeration system? Thank you for using the Jiskha Homework Help Forum. Do you mean Binary, Octal or Hexadecimal? (Broken Link Removed) P.S. 1. I need to convert 372 into

    asked by lacy
  95. 5th Grade math

    What is a partial-products algorithm. For example 87*65=? How do you do it and show your work? Here is how Chicago Math does it: 87 x65 multiply 80 x 60.....4800 multiply 7 x 60..... 420 multiply 5 x 80.......400 multlply 5 x 7 ........35 add the products.

    asked by Nick
  96. algebra

    I know that 10^-2.3=5.0 * 10^-3 How do I get 10^-2.6 in the same form as 5.0 * 10^-3? please and thank you! Punch in 10 on your calculator, then press the yx button followed by -2.6 and then press equal. You should get 2.51E-3 thanks, but mine just says:

    asked by Fiona
  97. Physics, still don't get it!

    Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa.

    asked by Mary
  98. ela

    wat rhymes wit chance ____ance: dance glance France prance lance Thank you for using the Jiskha Homework Help Forum. You might like to have the following link:

    asked by jose
  99. improve sentence

    It was Wednesday morning, November 15, 2006 and I woke up early than usual not being able to sleep because I had a AP Physics test that day. is there another way to put this in a sentence with all the information i want. it seems too long and too clumped

    asked by Anonymous
  100. chemistry

    explain why oxygen "likes" to form an O^2- ion. O2 is a molecule, not an ion. O2 is stable in the outer electron configuration.

    asked by Mani
  101. Math

    I have a few questions. 1) If a sphere is intersected by a plane that contains the center of the sphere, what would it look like? 2) Can the intersection of a plane and cylinder be a triangle? What is a hemisphere?

    asked by Emily
  102. math

    cards numbered 0 through 9 are in a bag. what is the probability you pull a card with a number greater than 7? i think it is 2/9. thanks. 0 through 9 There are 10 cards.

    asked by dillon
  103. language

    The minister joined the couple together as man and wife My! This puts the emphasis on the MAN, but the woman is just the wife. What word do you think should be used instead if MAN?

    asked by TJen
  104. Physics - Help!

    All, Please just help me in this, I will need you to please give me the clue-thanks. a flashlamp bulb is marked '2.5V,0.30A' and has to be operated from a dry battery of e.m.f 3.0V for the current p.d. of 2.5V to be produced across it. Why?

    asked by Sola
  105. math

    I need help with this question. Write the equation of the line which contains the point)0, -3) and whose slope is 4. A general line equation can be written as y = mx + c, where m is the slope and c a constant. so we can write this as y = 4x + c

    asked by Taylour
  106. Forensic Science

    Hello. I have to right a Forensic investigation paper on modern crimes and I wanted to know if anyone knew of any interesting modern crimes, except 9/11 or oj simpson or anna nicole smith. Please Help. Thanks! Here are a couple of sites that you will find

    asked by Janet
  107. Science (planets/gravity)

    What keeps all the planets the big ones and the small ones in orbit in our big solar system? A.The gravity from the sun. B.The gravity from the moon. C.The gravity between all the planets. D.The gravity from the beautiful our earth. What do all the planets

    asked by Hot stuff
  108. math

    find the area between the x-axis and the graph of the given function over the given interval: y = sqrt(9-x2^2) over [-3,3] actually, it's y = sqrt(9-x^2) over [-3,3]

    asked by jamay
  109. Math2

    Directions:Solve and graph the inequalities using words. Problems: 4.-3x>-6 or x-52x-1 or -6>-2x-2

    asked by margie
  110. environmental

    what actually is the effect of these named gases on the ecosystem, health, human, flora anad fauna. here are the gases H2S, CL2, SO2, NH3, SPM and HCN. Thank you for using the Jiskha Homework Help Forum. Hopefully something below will help you: 1.

    asked by kelechi
  111. science please help

    Which characteristic MOST helps holly trees to reproduce? A.Green leaves with a really waxy covering. B.Red berries with a beautiful round shape. C.Really Spiked leaves that have super sharp edges. D.A wonderful bark-covered trunk with many many branches.

    asked by Hot stuff
  112. Svience i really need help on this question

    Okay here is the question- Arboreal animals spend most of their lives in the wonderful big trees. In which of the folowing habitats would a fire cause death to the wonderful arboreal animals? Here are the answers to my question- A.The desert B.The forest

    asked by Hot stuff
  113. Math

    q + 13 = 120 __ 8 I'm going to assume your problem is this: (q/8) + 13 = 120 If so, start by subtracting 13 from both sides of the equation. Whatever operation you do to one side of an equation you must do to the other side as well. Next, multiply both

    asked by Bonnie
  114. science

    Which statement below does not apply to the moon? A. Does not have moving plates or volcanoes. B. Rotates just once on its own axis in about 28 days C. Rotates once on its axis in about 24 hr. D. Atmosphere is too thin to destroy asteroids I think it is C

    asked by Missy
  115. Health

    How much calories can you have each day? That depends upon your weight and activity level. Check this site.

    asked by Hot stuff
  116. how to become a us citizen

    How to become a U.S. citizen when you are not fron U.S. Thank you for using the Jiskha Homework Help Forum. Good luck! (Broken Link Removed) thank-you very much

    asked by Regis A
  117. math

    make triangles and find the area of those triangles and then add em together. I need to find the area of a polygon,breaking into simpler parts. how do you do it?

    asked by jamay
  118. dangling modifier

    He found his glasses crawling under the couch. Were his glasses really crawling under the couch?? I'm sure not! How can you rephrase this sentence so it's obvious that HE was the one crawling under the couch? ??

    asked by Anonymous
  119. math,algebra,correction

    which one is correct: factor completely: y^4+3y^3-5y^2-15y I ended up with two different ways but i am not sure which one is correct. Is it (A) y(y^2-5)(y+3) or (B) (y^3-5y)(y+3) Personally i think its A but then when i do foil to both of them i get the

    asked by jacky20
  120. ela

    wat rhymes wit else Try Merriam Webster's Rhyming Dictionary for kids...go to the main page and find kids section and look around. Good luck :-)

    asked by jc
  121. My algebra repost


    asked by Antonio
  122. business question

    I am given a project to Develop and Incorporate a Business. I decided about video game business for example companies that make big systems like xbox. What is the concept? Type of Entity?: LLC Reason for selecting Entity? Financial Assistance? Marketting

    asked by Bobby
  123. MORE 5th grade science

    Which of the following is a pattern that takes many years to observe? A.A catipillar turning into a butterfly-i think this is wrong B.Weather patterns revealing earths climate- this might be right C.A weater front bringing a cold winter storm- it maight be

    asked by Hot stuff
  124. vocab

    i need 3 more sentences using accursed and i cant think of anything please help!!!! It means hateful, doomed, or horrible. The substitute tried to teach us, the accursed, but the vocabulary didn't stick, and we failed the test. The accursed child died in

    asked by anonymous
  125. ALGEBRA 1

    Solve the following I am not sure if I did this correct (n-5)^2= 20 n-5=+/- 20 n=5+/- sqrt 20 Thanks yes on the final answer. On the second line, you forgot to type sqrt before 20. You can reduce it some....sqrt20= sqrt(4*5)= 2 sqrt5 Thanks Bobpursley

    asked by DANIELLE
  126. Social Studies

    Who was 13 president? Thank you for using the Jiskha Homework Help Forum. Here is a website on that president: thanx that helpedddddddd

    asked by Hot stuff