Isabel

Popular questions and responses by Isabel
  1. Physics

    Block 1 of mass m1 slides from rest along a frictionless ramp from height h and then collides with stationary block 2, which has mass m2 = 3m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction is μk and comes to

    asked on November 1, 2011
  2. college chemistry

    if 2.00g of Zn is allowed to react with 2.00g of CuSO4 according to the equation CuSO4(aq) + Zn(s)-----> ZnSO4 (aq)+ Cu(s) how many grams of Zn will remain after the reaction is complete ?

    asked on November 5, 2012
  3. physics

    An "energy bar" contains 22g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5 km/hr ?

    asked on November 13, 2010
  4. Physics

    Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

    asked on February 23, 2010
  5. chemistry

    DETERMINE the enthalpy for the reaction CH4(g)+NH3(g)->HCN(g)+3H2(g)

    asked on November 2, 2010
  6. College Physics

    A 57.0 cheerleader uses an oil-filled hydraulic lift to hold four 110 football players at a height of 1.40 . If her piston is 19.0 in diameter, what is the diameter of the football players' piston? The density of the oil in the hydraulic system is 900

    asked on June 13, 2013
  7. Help this is so confusing?

    *=times ^=square root /=divided 3.1416*3/6+123-56*^16*11-23/178=??? HELP ME!

    asked on November 13, 2008
  8. chemistry

    The volume of a mass of gas is 300 ml at 25 Celsius and 685 torr. What will the gas occupy at STP?

    asked on May 1, 2013
  9. Math

    Submarine is traveling parallel to the surface of the water 492 feet below the surface. The submarine begins a constant I sent to the surface so that it will emerge on the surface after traveling 3974 feet from the point of its initial ascent? What

    asked on May 20, 2018
  10. math

    Three cards are chosen at random from a standard 52-card deck. What is the probability that they are not all the same color?

    asked on July 28, 2018
  11. analogy

    what is the analogy flower:rose::tree? begining with the letters scr,spr,str,thr

    asked on January 18, 2018
  12. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked on March 21, 2015
  13. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked on March 21, 2015
  14. Geometry (immediate help and explanation)

    A bridge is the shape of an arc of a circle. The bridge is 8 feet tall and 36 feet wide. What is the radius of the circle that contains the bridge? Round your answer to the nearest tenth.

    asked on February 20, 2013
  15. Physics

    Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

    asked on February 22, 2010
  16. Math

    Mr. Brown needs to buy some fencing for his garden (too many rabbits have been getting in and eating the vegetables). If his garden is twenty-three meters by thirty-four meters and is in the shape of a rectangle, what length of fence does he need to build?

    asked on February 8, 2013
  17. Physics

    Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

    asked on February 23, 2010
  18. Math

    the perimeter of a rectangle is 108 cm. if the length of the rectangle is 5 tikes the width what are the demensions of the rectangle

    asked on January 17, 2017
  19. Math

    You are on your way to work.you drive 2.4. Miles to a gas station and buy gas.your workplace is 4.99 miles from the gas station.what is the distance of your commute to work

    asked on November 13, 2019
  20. probability

    A team averages 7 losses for every 13 games it wins. If ties are not permitted, what is the probability that the team will win its next game? Express your answer as a percent.

    asked on July 5, 2018
  21. Chemistry

    I was wondering if somebody could help me with this... Classify the following substances as covalent molecules or ionic compounds: a. MgO e. LiCl b. NI3 f. SF4 c. CuS g. XeF4 d. NO2 h. CsF How do you know if they are covalent or ionic bonds? Metal +

    asked on October 24, 2006
  22. Physics

    1. A dog sits under the only shade tree in its territory. Suddenly the dog desires to dig a previously buried bone. From the tree the dog goes 13 meters at 22.6° north of east. Not finding the bone there the dog then goes 17 meters at 61.9° north of

    asked on September 25, 2016
  23. math

    Match the account balance with the debt that it represents. account balance = −$22 account balance > −$22 account balance < −$22

    asked on January 29, 2019
  24. Grammar

    What is the irregular plural noun? The teams of oxen pulled the plows across the field. (I CANT FIND THE ANSWER DEPENDING ON THE DEFINITIONS ON THE PAPER AND ONLINE)

    asked on October 27, 2014
  25. Math

    A fish bowl is constructed out of a spherical bowl with diameter 20cm. The bowl was initially empty and water flows into the bowl at a rate of 10cm^3/s. Let V and h be the volume and depth of water in the bowl at time t seconds respectively. Find dh/dt

    asked on November 30, 2016
  26. Math

    A cylinder is inscribed in a cone as shown in the diagram below. The cone has a height of 8cm and a fixed radius of R cm. The cylinder has a radius of x cm and a height of h cm. Show that the volume of the cylinder is maximised when x=kR, where k is a

    asked on November 29, 2016
  27. science

    The two systems shown below are identical except for the rod connecting the two beakers. Initially the temperatures of the beakers are as follows: Beaker A = 88°C Beaker B = 42°C Beaker C = 88°C Beaker D = 42°C Four minutes later the temperatures are

    asked on March 21, 2015
  28. math

    you are building a ramp that will be in the same shape of a perfect right angled triangle. the vertical height of the ramp will be 10 feet. the horizontal base of the ramp will be 15 feet. what will be the length of the downward sloping side of the ramp? A

    asked on October 28, 2008
  29. Physics (pressure)

    A barometer has air trapped above the mercury in an inverted tube with the opening in a reservoir of mercury. When the length l of air trapped is 10.0cm, the mercury height h is 72.0. When the tube is slightly lowered into the reservoir, l becomes 8.0cm.

    asked on December 16, 2016
  30. science

    Two insulated beakers contain different amounts of identical liquids. Beaker A contains twice as much liquid as Beaker B. The temperature of Beaker A is 80°C. The temperature of Beaker B is 40°C. An aluminum rod connects the beakers, and the system is

    asked on March 21, 2015
  31. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 85°C. The temperature of Beaker B is 40°C. A metal rod connects the beakers. Five minutes later, the temperature of Beaker A is 75°C and the temperature

    asked on March 21, 2015
  32. math

    How do I find the expanded form of a number?

    asked on June 3, 2008
  33. History

    Why didn’t America get involved immediately in World War 1 ?

    asked on February 18, 2020
  34. AICE math

    A 30 foot ladder is leaning against a house(see figure). if the base of the ladder is pulled away from the house at a rate of 2 feet per second, the top will move down the wall at a a rate of r= 2x/(sqrt(900-x^2) ft/sec, where s ist the distance between

    asked on November 9, 2013
  35. physics

    In a room that is 2.78 m high, a spring (unstrained length = 0.30 m) hangs from the ceiling. A board whose length is 1.94 m is attached to the free end of the spring. The board hangs straight down, so that its 1.94-m length is perpendicular to the floor.

    asked on April 17, 2011
  36. math 6th grade

    I left my math book at school, grabbed my geo. :( We were supposed to take notes in a math textbook about Variables and Algebraic expressions. Can I have a good website with definitions and examples? Thanks. (and next time i'll remember my textbook)

    asked on September 15, 2009
  37. math

    you deposit $ 900 in a savings account that earns 4%interest coumpounded once a year and has no service charges. you donot make any deposits or withdrawals to the account for two years. at the end of two years, after the second year's interest has been

    asked on October 28, 2008
  38. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked on March 21, 2015
  39. math

    the ratio of boys to total of students is 2:5.the number of girls of the student is 3. there are 123 girls.how many boys are there?

    asked on March 7, 2012
  40. Reading/Writing

    How do you find themes in a story? EX. Don't watch too much TV or you will become dumb.

    asked on November 13, 2008
  41. Social Studies

    What continent is Brazil on?

    asked on June 9, 2008
  42. Math (immediate help, please)

    A bicycle has 26-inch diameter wheels. If the wheels revolved 2 times after the brakes were applied, the stopping distance is approximately _____. What's the answer? Provide a thorough explanation as well, please.

    asked on March 7, 2013
  43. algebra 1

    what is the y-intercept of the graph of 4x+2y=12? i was giong well on my scratch paper and i mest up and i got stuck and had to erase everything and do it over answers: a -4 b -2 c 6 d 12 please and thank you i need how they do the work i cant decide!

    asked on April 7, 2010
  44. Math (immediate help, please!)

    A bicycle has 26-inch diameter wheels. If the wheels revolved 2 times after the brakes were applied, the stopping distance is approximately _____. What's the answer? Provide a thorough explanation as well, please.

    asked on March 7, 2013
  45. math

    what is the sixth term in this sequence 83,77,71,65

    asked on August 19, 2010
  46. math

    graph y=x2,y=2x2 and y=1/2x2 on the same

    asked on February 23, 2010
  47. Algebra

    How can you factor? x^6+y^6 That expression cannot be factored further because the bases of the exponents are different. so it's prime...Thank you. Can you please help me with this one? 50x^2 - 2y^2 - 4yz - 2z^2 I tried doing it but I get very confused.

    asked on October 30, 2006
  48. English

    Hi, I was wondering if somebody could help me with this... I'm supposed to determine whether these examples are logical fallacies or not. and if they're logical fallacies and I have to determine what type. 1. If no one answers the phone, obviously there is

    asked on October 27, 2006
  49. World History

    Hi, I've been assigned a project where I'm playing the role of a history revionist that has to make a top ten list of the problems with bureaucracy in Qing Dynasty China. Also, this has to appeal to senior citizens somehow (that's my assigned audience).

    asked on March 27, 2012
  50. English

    What actions could the friar and nurse (from Romeo and Juliet) have taken in act 4 that would have changed the outcome?

    asked on February 24, 2011
  51. English

    Hi, I was wondering if somebody could help me understand this writing prompt. I'm not sure If I'm supposed to talk about the characters' different points of view in some goals toward achieving sucess or if I'm supposed to tell what each characters' goals

    asked on October 14, 2006
  52. Physics

    Hi I was wondering if somebody could help me with this question? According to the Bohr model, what determines the color of light emitted when an electron moves from one energy level to another? The color (wavelength) is determined by the change in energy

    asked on October 10, 2006
  53. US History

    Hello! I was wondering if somebody could help with this question... - During the early eighteenth century the colonial assemblies had gained what two important powers, what were they? According to Encarta Encyclopedia, "In reality, the governors had to

    asked on October 4, 2006
  54. Englsih

    What action verb would you use to replace "got" in the following sentence? On his way home, he got run over. I am out of clues as to what action verb to use in this sentence. Please help me!

    asked on September 10, 2016
  55. Reading and Writing

    What is a cogent essay? Is a cogent essay an argumentative essay?

    asked on March 19, 2015
  56. Statistics

    1200 high school freshman were randomly selected for a national survey. Among survey participants, the mean grade-point average was 2.8, and standard deviation was 0.6. What is the margin of error, assuming a 95% confidence level?

    asked on February 27, 2015
  57. chemistry

    what would happen if PbI2 were to be ingested into your blood stream?

    asked on February 1, 2011
  58. science

    what drives the lithospheric plates

    asked on February 2, 2010
  59. HCA 220

    Yes Ms. Sue it has to be imaginary patient.

    asked on January 21, 2010
  60. HCA 220

    o Scenario 2: You are an allied health professional working with an orthopedist. You have been working with the patient and need to update the doctor on the reason for the patient’s visit. Begin describing the patient’s concerns. Your classmates may

    asked on January 20, 2010
  61. 7th grade math

    Keeping the numbers in exact order, add perentheses, exponents, multiplication, subtraction, divison and addition to make this expression equal 100. 3,5,6,2,54, and 5. Thank you!

    asked on September 2, 2009
  62. 5th Grade Math

    Question:Percy is coloring a flag he made for class. He can use the colors blue, green, yellow and red.He can paint the rectangle part (backround) of the flag one color, the triangle one color, and the star one color. For example, Percy could make the star

    asked on January 22, 2009
  63. 4th Grade Math

    At Mrs. Livingston's favorite grocery store, oranges are sold in bags of 10 and grapefruits are sold in bags of 6. Mrs. Livingston wants to buy an equal number of oranges and grapefruits. What is the smallest number of each fruit Mrs. Livingston needs to

    asked on November 13, 2008
  64. algebra 2

    find a1 for given geometric series. Sn= 405, r=3, n=4 I don't know how to start the problem

    asked on July 22, 2014
  65. olgc

    a circle is divided into 18 equal parts. how many degrees is the angle for each part? how many degrees is the angle for the 5 parts?

    asked on January 29, 2014
  66. homophones

    is the word days a homophone?

    asked on March 14, 2011
  67. books

    I am having trouble finding the birth date of Lady Montague from Romeo and Juliet. If you can please help me i would really appreciate it!!!!!!!!!!!!!!! Thanks sooooooooooo much, Isabel

    asked on March 6, 2012
  68. Math

    If i'm given the equation 4.23= -.19t^2+2.56t-2.37 how do i find the value of t?

    asked on August 22, 2010
  69. personal finance

    would you purchase a $100,000 20 year annuity today for $15,000 given a required rate of return of 14.5%? Why, what is the value of the annuity?

    asked on March 17, 2010
  70. Math

    What was the average number of laps completed by each team member running? The total laps were 6,000.

    asked on October 28, 2008
  71. math

    your credit card balance is $1150 and the minimum monthly payment required is 3%. what is the minimum amount you must pay this month? A $25.50 B $31.00 C $34.50 D $39.00

    asked on October 28, 2008
  72. Math

    What is 9,010-8,736?

    asked on June 9, 2008
  73. US History

    I can't find the answer to this question. Please someone help What was the purpose of Andrew Jackson's report to the Secretary of War on January 19, 1814? Frm The Wopld Book Encyclopedia, 1977 edition, He refused to demobilise his forces, per the Secratary

    asked on November 1, 2006
  74. Algebra

    How can you factor? 1. x^4 - 4x^2 + 3 2. x^3 - 2x^2 - 4x + 8 Thanks 1. set a = x^2 this should simplify your problem once you've factored the expression, substitute x^2 back in for a 2. For our purposes I don't think this expression can be factored.

    asked on October 31, 2006
  75. Algebra

    Peter buys 84 yards of fence to make a play area for his puppy. He wants the area to be 28 yards long. What is the area of the play area if he uses the entire fence he bought?

    asked on September 12, 2014
  76. Math (immediate help, please)

    Find the area of a regular pentagon with a side 8 centimeters. Please provide an explanation!

    asked on March 7, 2013
  77. Math

    Farmer Bob is considering buying a new field that is next to one he already owns. The field he is considering is a perfect square. The fence along each side of this square field is made of old logs and is a third of a mile lone. If he can walk at a rate of

    asked on February 8, 2013
  78. Math

    Find lim θ→0+ A(θ)/B(θ)

    asked on November 1, 2011
  79. ENGLISH

    IM DOING AN ACROSTIC POEM ON THE WORD SPRING AND I NEED HELP FOR I CAN I GET ANY IDEAS ASAP DO TOMORROW 4/13/2011 THANK :]

    asked on April 13, 2011
  80. HCA 220

    You are attending a wellness conference and one of the exhibitors is a chiropractor in your local area. You are unfamiliar with chiropractic care and want to learn more. Since you are at the conference, the doctor assumes that you have knowledge of medical

    asked on January 20, 2010
  81. Math

    Write a formula to find the area (A) of a square. Use S to represent the length of one side.

    asked on November 13, 2008
  82. matha

    which of the following is an example of a binomial? A 2y B 2x+y C 2xy D none of the above

    asked on October 27, 2008
  83. English

    This is a copy of my Essay, any help? Ishmael Beah’s memoir A Long Way Gone tells the tragic story being a child soldier and the horrifying truth about the collateral damage of the civil war in Sierra Leone. The book chronicles the day to day events of

    asked on August 28, 2018
  84. Stats - Please help

    I have data on ATPase activity of two types of muscle at different concentrations of Ca 2+ and although the leg muscle seems to be more responsive than the flight i have to prove this statistically I don't know whether my data is paired or not. I think

    asked on April 25, 2011
  85. Science / math

    I have data on ATPase activity of two types of muscle at different concentrations of Ca 2+ and although the leg muscle seems to be more responsive than the flight i have to prove this statistically I don't know whether my data is paired or not. I think

    asked on April 25, 2011
  86. science biochem- please help!!!!

    I don't know where to start with it? A tube is set up for radioimmunoassay containing antibody with a capacity for binding 1ug antigen. Both labelled (50,000 counts per ug) and unlabelled antigen are added to the tube. Work out a formula to calculate the

    asked on February 27, 2011
  87. pre algebra

    evaluate (m+n)-3 power if m=-1 and n=-5

    asked on September 14, 2010
  88. Math

    Can somebody give me a good explanation on how to find the Greatest Common Factor on a 6th-7th garde level? Thanks. I was absent yesterday and I have a quiz on this TOMORROW!

    asked on September 10, 2009
  89. 7th grade

    can someone help me with RATIONAL NUMBER REPRESENTATION: APPROPRIATE FORMS!?!?!@_@IM FREAKIN OUT HERE PEOPLEZZ!!!

    asked on September 1, 2009
  90. United States History

    Hi I was wondering could help me with this question... :-) Why did it seem improbable that the thirteen colonies would come together and unite in a common bond? What past events made this seem like an unrealistic expectation? Off the top of my head, I can

    asked on October 17, 2006
  91. math

    unpaid balance at the end of the 10th year? loan amount of 250,000

    asked on March 21, 2011
  92. English

    What actions could the friar and nurse (from Romeo and Juliet) have taken in act 4 that would have changed the outcome?

    asked on February 24, 2011
  93. Math

    What was the average number of laps completed by each team member running? The total laps were 6,000.

    asked on October 28, 2008
  94. literary

    what is the relation beween shakespeare and john donne?

    asked on June 11, 2008
  95. math

    How do I simplify a number like 3 and sixteen twelves?

    asked on June 3, 2008
  96. Math

    How do you find a common denominator?

    asked on July 7, 2008
  97. math

    explain how you know tt 3/6 i greater than 1/3 but less than 2/3

    asked on January 25, 2011
  98. math

    how can i drop an egg 4 feet without breaking it

    asked on October 6, 2010
  99. pre algebra

    100- 3(2.3) + 5.6

    asked on September 15, 2010
  100. math

    r=7.5 what is the diameter circumference, and area

    asked on May 16, 2010

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