Questions Asked on
June 4, 2016

  1. mathematics

    Cand D are two observation posts on the same horizontal ground at the foot A of a vertical tower AB.the tower is 18m due north of D and 24m east of C.the angle of elevation of B from D is 35¡ã.calculate to three s.f the height AB,distance CD,angle of

    asked by jenny
  2. PHYSICS

    Explain the statement the capacitance of a capacitor is 5microfarads

    asked by KENNEDY
  3. chemistry

    aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide a. balance the chem eqn for this rxn Al2S3+6H2O = 2Al(OH)3+3H2S b.how many g of water are needed in the rxn to produce al(oh)3? what is the formula i use here?? c. how many

    asked by shi
  4. Math(Revised)

    Phoebe and Tucker are 48m apart. Phoebe looks up at an angle of 43 degrees to see a hot air balloon hovering in the sky directly between her and Tucker. Tucker looks up at an angle of 31 degrees to see the hot air balloon. A.) Explain how it could be

    asked by Cameron
  5. Vocabulary

    My sister thinks she is psychic. She says she has ESPN. A. Irony B. Onomatopoeia C. Pun D. Malapropism D?

    asked by Ms. Sue Please help me
  6. math

    a plane flies northwards for 430km.if the plane flies eastward for 380km.how far is it from its starting point(ignore its height above the ground)

    asked by adebisi adewumi j
  7. maths

    A rectangular tank weighs 310kg,when it is half full of water and 450kg ,when it is three quarter full of water.What is the weight of the empty tank?

    asked by Olubunmi
  8. Urgent! Pre-Cal

    A wheelchair ramp with a length of 122 inches(top of ramp) and has a horizontal distance of 120 inches(bottom of ramp): a) what is the ramp's vertical distance(x)? b)Construction laws are very specific when it comes to ramps. Each vertical rise of 1 inch

    asked by Dom
  9. gen chem

    A sample of glucose C6H12O6 contains 2.03x10^21 atoms of carbon. how many atoms of hydrogen does it contain? mole of H= 6.02x10^23/2.03x10^21? i don't know if my formula is right and i also don't know where to get the mole of H. please help me understand

    asked by she
  10. Statistics

    We investigate if a period of time feels longer or shorter when people are bored compared to when they are not bored. Using independent samples, we obtain these estimates of the time period (in minutes):

    asked by Kassi
  11. Vocabulary

    In order to change the meaning of the word teach from "to give instruction" to "to give instruction with" you would add the prefix: A. ed B. pre C. er D. co D?

    asked by Ms. Sue Please help me
  12. Vocabulary

    Which of the following suffixes means “bearing or producing”? A. -oferous B. -oid C. -fic D. -osis C?

    asked by Ms. Sue Please help me
  13. Vocabulary

    As I walked past the bakery, the sweet, rich aroma of pastries floated through the air and tickled my nose. A. Malapropism B. Antithesis C. Irony D. Imagery D?

    asked by quick help needed
  14. Vocabulary

    Criticism A. Analysis B. Summary C. Critique D. Argument A is wrong. Is it C? Please help me Ms.Sue cause your always correct. Am begging for help Please.

    asked by Ms. Sue Please help me
  15. math

    find the lenght of the longest straight line which can be drawn on a rectanglelar chalkboard which measure 2.2m by 1.2m

    asked by adebisi adewumi j
  16. psychology

    When considering evidence of validity and associated social consequences of instruments counselors should consider all of the following except for:

    asked by jesusa
  17. Vocabulary

    My teacher talked for an hour about the uselessness of long speeches. A. Idiom B. Simile C. Irony D. Metaphor D?

    asked by quick help needed
  18. Vocabulary

    My dad always says, “Time is money”. A. Metaphor B. Irony C. Idiom D. Pun C is wrong and a bit sure its A.Is that correct?

    asked by Ms. Sue Please help me
  19. Vocabulary

    She worked really hard on the project. The suffix -ed in the italicized word in the sentence above illustrates that the work happened in the ______ tense. A. past B. past-perfect C. future D. future-perfect B is wrong. Is it A?

    asked by Ms. Sue Please help me
  20. physics

    A 0.02kg bullet is fired at a 3.5kg block which is initially at rest on a table. The bullet embeds in the block. Friction converts the 24.02J of kinetic energy to heat and brings the block and bullet system to stop. How fast was the bullet and block system

    asked by ChrismB
  21. Social Studies(I need websites to do these please)

    In 1965, Congress adopted the Voting Rights Act. Describe this act. In your description, explain what led Congress to pass the act, and describe at least two of the act's effects. How has the population of South Carolina changed over the past one hundred

    asked by Mame
  22. Math(Please Help Assignment Due Today)

    Explain why knowing a combination of four pairs of equal sides or equal angles guarantees one of the congruence relationships.

    asked by Shayla
  23. Science

    The Haber-Bosch process, devised in the early 20th century, revolutionized global industry. It provides a way of “fixing” atmospheric nitrogen into ammonia, allowing for the production of fertilizers and the many nitrogen-based chemicals we use today.

    asked by John Lee
  24. Physics

    This is a theoretical question, ignore the numbers. A 205-kg log is pulled up and to the right on a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0 degrees with respect to the horizontal. The coefficient of

    asked by Anonymous
  25. Science

    A machine has velocity ratio of 5 and is 60% efficient. What effort would be needed to lift a load of 200N with tge aid of this machine?

    asked by Selasi
  26. science

    Three equal-sized pans containing distilled (pure water),ocean water (3 percent salt),and water from the Great Salt Lake in Utah (about 20 percent salt)are placed in freezer. Which of the following would be the order in which these three liquids would

    asked by kizzi
  27. science

    A locomotive train is on its way from Chicago, IL to Madison, WI. The trip is said to last 3.15 hours. When the train arrives in Madison the conductor notices it actually took them 3.26 hours. The train company prides itself on always having its trains to

    asked by Janet
  28. Chemistry

    How many ammonia liters of ammonia gas are produced when 85 grams of liquid nitrogen completely react? N2 + 3H2 = 2NH3

    asked by Macario
  29. Vocabulary

    He is such a good singer. His talent is unparalyzed by any other. A. Antithesis B. Alliteration C. Personification D. Malapropism D?

    asked by quick help needed
  30. maths

    f(x)equals to 2x is in form of y equals to ax or y equals to af(x) (if f(x)equals to x) plot f(x) equals to 2x

    asked by Nontobeko
  31. biology

    what is the habitat,observable features,economic importance,scientific name,behavioural adaptation,mode of feeding and other necessary details of a cricket.

    asked by C A C WORLDWIDE
  32. Math

    A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.

    asked by Sue
  33. social studies

    How did Congress respond to the black codes passed in many Southern states after the Civil War? (1 point)by taking away the voting rights of southerners by sanctioning the remaining Democrats in Congress by impeaching the president by expanding the power

    asked by erik
  34. Math

    A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.

    asked by Mike
  35. Political science

    what does realism explain best and what does it miss? what does liberalism explain best and what does it miss? what does radicalism best explain and what does it miss? what does Constructivism best explain and what does it miss?

    asked by Kammy
  36. geometry

    The point A(-8, 6) is translated using T: (x,y) → (x + 5. y - 4).

    asked by m
  37. physics

    A ball of mass 0.1 kg, initially at rest, is dropped from height of 1 m. Ball hits the ground and bounces off the ground. Upon impact with the ground, its velocity reduces by 20%. The height (in m) to which the ball will rise is:

    asked by Gulab
  38. math

    To avoid a pond, Tom must walk 10 meters south and 24 meters east. To the nearest meter, how many meters would be saved if it were possible to walk through the pond? 10^2 + 24^2 = C^2 100 + 576 + C^2 C^2 = 676 C^2 = SQRT of 676 or 26 meters

    asked by mike
  39. Social Studies (Please read this)

    Please just make sure that my information is right and it is grammatically correct. Thank you! In 1965, Congress adopted the Voting Rights Act. Describe this act. In our description, explain what led Congress to pass the act, and describe at least two of

    asked by Mame
  40. Math

    Two boats leave the same place at the same time. The first sails in a straight line N70°W at 45 miles per hour and the second goes in a straight line S23°E at 57 miles per hour. After 1 hour, how far apart are the boats, to the nearest tenth of a mile?

    asked by John
  41. Physics

    A man with a mass(mm) of 71.9 kg stands up in a 95-kg canoe(mc) of length(l) 4.00 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and

    asked by Madison
  42. Someone please help

    How has the population of South Carolina changed over the past one hundred years? Explain whether the state has become more rural or more urban, and describe at least three challenges that accompany this shift in population. All I know is that South

    asked by Mame
  43. Social Studies (Please check these)

    What title best represents the subject of the cartoon? The title is Inch by Inch picture is of a huge door with tiny children trying to push it open a. "Change Is a Long, Slow Process" b. "Education Opens the Door to the Minds" c. "Students Take Early

    asked by Mame
  44. math

    To avoid a pond, Tom must walk 10 meters south and 24 meters east. To the nearest meter, how many meters would be saved if it were possible to walk through the pond? 10^2 + 24^2 = C^2 100 + 576 + C^2 C^2 = 676 C^2 = SQRT of 676 or 26 meters Not sure how to

    asked by mike
  45. Vocabulary

    A poem that is told in an actual manner. A. Lyrics B. Ballard C. Sonnet D. Genre D?

    asked by Ms. Sue Please help me
  46. Earth Science

    Why are boats more efficient than airplanes? They use less fossil fuels to move

    asked by mike
  47. English

    How to write a debate for the motion boys should not help in the kitchen

    asked by Godwin
  48. Science

    Why are boats more efficient than airplanes? They use less fossil fuels to move

    asked by David
  49. christian religous knowledge

    who was the king that was removed from the throne by a hook in the bible

    asked by CAC WORLD WIDE
  50. Algebra

    x/x-4 - 4/x-5=- 4/x^-9x +20

    asked by liliy
  51. Art

    what training is required to be an art teacher? how long dose the training normally take?

    asked by AnimeLovelyLover
  52. Vocabulary

    Which of the following suffixes means “the study of”? A. -eer/-or/-er B. -oferous C. -ology D. -acious C?

    asked by Ms. Sue Please help me
  53. Algebra

    2x/x-5 + 1/x-1=0

    asked by liliy
  54. Chemistry

    One of the issues caused by acid rain is the lowering of pH of small lakes, which leads to the death of numerous aquatic fish and plant species. Calcium oxide, commonly known as lime, is frequently used to temporarily remediate lakes that have been

    asked by John Lee
  55. ENGLISH

    Prewriting: Choosing Your Topic Use the chart below to take notes on two literary works that you have found while browsing. These two works should have enough similarities to make connections between them and to draw comparisons. Story Author Plot

    asked by I NEED HELP FAST PLEASE!!!!!
  56. science

    Find the angle of friction when rod starts sliding

    asked by anu
  57. physics

    What is the formula to calculate the height of fluid in cylinder if the volume of fluid is known, and the length and diameter of cylinder is known? Kindly help please!

    asked by ChrismB
  58. Algebra

    My assignment was for each polynomial topic is to give an "example and written description." What would be an "example" and "written description" of a CONNECTION TO A QUADRATIC FUNCTIONS.

    asked by Kimmy
  59. math

    Find out which of these are pythagorean tripple.a(20,21,29)b(15,22,27)c(28,45,53)d(12,16,20)e(30,40,50)with workings.

    asked by adebisi adewumi j
  60. Math

    Hey there, just need help with these two. I need someone to help explain them to me/break them down. 1. gr 1/100=_____mg Answer: 0.6 2. 0.3mg= gr_____ Answer: 1/200 3. gr iii /ss= ______mg Answer: 210 Thank you in advance!

    asked by Anonymous
  61. English

    1. Watching the shining bridge from the beach is wonderful. 2. Watching the shining bridge at the beach is wonderful. 3. Watching the shining bridge on the beach is wonderful. ------------------------ Which preposition is suitable? Can we use all the

    asked by rfvv
  62. Chemistry

    7. For the equilibrium system below, which of the following would increase the concentration of 𝐻2𝑂(𝑔)? 𝐶(𝑠) + 𝐻2𝑂(𝑔) + 131𝑘𝐽 ↔ 𝐶𝑂(𝑔) + 𝐻2(𝑔) a. Increased temperature b. Decreased pressure c. Decreased [CO] d.

    asked by Urgent
  63. Chemistry

    For the equilibrium system below, which of the following would decrease the concentration of 𝑃𝐶𝑙3(𝑔)? 𝑃𝐶𝑙3(𝑔) + 𝐶𝑙2(𝑔) ↔ 𝑃𝐶𝑙5(𝑔) + 45𝑘𝐽 a. Increased temperature b. Decreased pressure c. Increased

    asked by Help:(
  64. Math-Calc

    f(r)=r/(10r^2+7) find the critical numbers. I found the derivative to be -10r^2+7/(10r^2+7)^2 and now I am stuck. What do I do next?

    asked by Anonymous
  65. science

    which of the following would be a disadvantage of boiling food in salted water rather than using pure water? 1 A only 2 B only 3 C only 4 D only 5 A and D only B ONLY is the answer?!

    asked by kizzi
  66. physics

    what is the frequency of unknown fork if 8 beats in 8 seconds are heard with each fork

    asked by john
  67. Math

    Use 18 coins to make $1.75 I NEED LOTS OF HELP IM JUST IN FOURTH GRADE AND MY TEACHER NEVER TAUGHT ME THIS MY TEACHER IS MRS MCABE

    asked by Isabella
  68. mathematics

    express 1/2 + 3/y-1 as a single fraction

    asked by dodo
  69. math

    car gets 19 miles to the gal at let's say $3 per gal, taking an 8.5mi trip. How much does this trip cost?

    asked by Lee
  70. chemistry

    In assessing 20.0ml of NaOH 0.175M , calculate how many ml of 0.200M HCl must be added to obtain a pH of 12.55

    asked by marco
  71. math

    32foot ladder at a 70degree angle. How high is top of ladder

    asked by Anonymous
  72. science

    could you use potassium nitrate to test for fluoride in mouth rinse? Is potassium nitrate a water soluble.?

    asked by Janet
  73. Spanish

    Escribe los pronombres que deben estar en los espacios. Juan compra flores a su abuela. Juan __ __ compra.

    asked by Nina
  74. Math

    Phoebe and Tucker are 48m apart. Phoebe looks up at an angle of 43 degrees to see a hot air balloon hovering in the sky directly between her and Tucker. Tucker looks up at an angle of 31 degrees to see the hot air balloon. A.) Explain how it could be

    asked by Cameron
  75. Vocabulary

    Criticism A. Analysis B. Summary C. Critique D. Argument A is wrong so is D correct?

    asked by quick help needed
  76. Vocabulary

    A poem that is told in an actual manner. A. Lyrics B. Ballard C. Sonnet D. Genre C is wrong so is A correct?

    asked by quick help needed
  77. math

    A tank is 5/7 full, when 440 litres are removed it goes to 2/5. How much litres does it contain in full capacity

    asked by Vicky
  78. science

    the brains of left handers may be more sensitive to drugs, says a Swiss researcher, that may be why more people are right handed. Peter Irwin of the chemical firm Sandoz limited, in Basel, gave 88 subjects 12 different drugs, the used electroencephalograms

    asked by kizzi
  79. Physics

    A ball is thrown vertically upward from the edge of a bridge 29.0 m high with an initial speed of 20.0 m/s. The ball falls all the way down and strikes the water below. Determine the time it takes the ball to strike the water.

    asked by Neal parikh
  80. Physics

    A pitcher throws horizontally a fast ball at 156 km/h toward the home plate, which is 18.2 m away. Neglecting air resistance (not a good idea if you are the batter), find how far the ball drops because of gravity by the time it reaches the home plate.

    asked by Neal parikh
  81. Physics

    An arrow has an initial launch speed of 39 m/s. If it must strike a target 39 m away at the same elevation, what should be the projection angle?(Hint: sin2θ = 2sinθcosθ)

    asked by Neal parikh
  82. Vocabulary

    When someone needs help, I try to lend a hand. A. Alliteration B. Antithesis C. Idiom D. Imagery C?

    asked by quick help needed
  83. physics

    A car is travelling at 20m/s along a road. A child runs out into the road 50m ahead and the car driver steps on the brake pedal. What must the car's declerations be if the car is to slop just before it reaches the child .

    asked by sumit
  84. Science

    I've been asking questions and all you so called "helpers" (such as Reed, Writeacher, etc.) you are all being sarcastic. I have no interests to cheat, but you don't listen to my side notes. I am going to ask one more question, and again, be don't be

    asked by FYH
  85. physics

    A marine siren consists of a cylinder 72 cm in length closed at one end.for sound through air at 336 m/s. find the lowest frequency of the siren

    asked by omar
  86. Math

    Calculate the perimeter of the triangle formed by the middle points of the sides of the triangle formed by points A(-8,6) B (2,5) and C (1,7) I've already got the distance between all the points given but I do not know what to do next. Can you help me?

    asked by Julius