Questions Asked on
July 5, 2016

  1. Math

    There are 12 more toy cars than toy trucks in a toy box with a total of 38 toy cars and trucks. How many toy trucks are in the toy box?

    asked by Jane
  2. chemistry

    If potassium chlorate is 80 percent pure ,then 48gram of oxygen would produced from how many gram of potassiumchlorate

    asked by biswamohan
  3. Maths

    Prove that CosB-cosA/cosA+cosB=tanA+B/2tanA-B/2

    asked by Yash Rah
  4. Math

    Pen has 1/2 cup and 1/8 cup measuring cups. What are two ways he could measure out 1 3/4 cups of flour? Plz help thanks!

    asked by Pam
  5. math

    Find the area of the following plane figure. Use = 3.14. A circle has a radius of 8 cm. What is its area? Area (to the nearest tenth) =

    asked by C
  6. chem 121

    How many air molecules are in a 15.0×12.0×10.0 ft room? Assume atmospheric pressure of 1.00 atm, a room temperature of 20.0 ∘C, and ideal behavior. Volume conversion:There are 28.2 liters in one cubic foot.

    asked by amgelina
  7. Physics

    A playground merry-go-round of radius R = 1.92m has a moment of inertia of I = 221kgm^2 and is rotating at 14.0rev/min about a frictionless vertical axle. Facing the axle, a 29.8kg child hops onto the merry-go-round and manages to sit down on its edge.

    asked by Andrea
  8. Physics

    What is the magnitude of the momentum of a 10,000-kg truck whose speed is 12.0 m/s? What is the kinetic energy?

    asked by mocampo
  9. chemistry

    Decomposition of nitrogen pentoxide in ccl4

    asked by viji
  10. Chemistry

    A 25g piece of an unknown metal alloy at 150 degrees Celsius is dropped into an insulated container with 200 g of ice. Calculate the specific heat capacity of the metal, given that 9.0 g of ice melted. How would you work this out?

    asked by Fred
  11. math

    Find the area of the following plane figure. An ellipse has a major axis of 14 cm and a minor axis of 10 cm. Find its area. Area (to the nearest tenth) =

    asked by C
  12. Physics

    A light, rigid rod 1.039m in length joins two particles with masses 3.65kg and 4.94kg at its ends. The combination rotates in the xy plane about a pivot through the centre of the rod. Determine the angular momentum of the system about the origin when the

    asked by Helen
  13. Physics

    A 2.0-kg brick is moving at a speed of 6.0m/s. How large a force F is needed to stop the brick in a time of 7.0x10^-4 s?

    asked by mocampo
  14. conclusions

    What function do conclusions serve in essays? A. Conclusions provide the supporting details of an essay. B. Conclusions develop the main idea of an essay. C. Conclusions sum up the main idea of an essay. (MY ANSWER) D. Conclusions introduce new ideas

    asked by Rebecca
  15. Physics

    A crane lifts a 1800-kg load of scrap metals to a distance of 15 m in 20 s. how much power is used in delivering the load?

    asked by mocampo
  16. Pre Calculus

    Evaluate the function f(x) = log3 x at x =1/27 without using a calculator a. –4 b. –2 c. 1/27 d. –3 e. 27

    asked by Jessica Maths
  17. conclusions - check answer

    Which of the following is a true statement about writing introductions of rough drafts? A. Do not worry about the central point of your essay; it will happen later on as you revise your paper. (MY ANSWER) B. Pay close attention to the correct spelling of

    asked by Rebecca
  18. Chemistry

    What volume of each of the following bases will react completely with 25.00 mL of 0.200 M HCl? a) 0.100 M NaOH b)0.0500 M Sr(OH)2 c)0.250 M KOH please explain and show detail I'm so lost on this problem... thanks!

    asked by Chantelle
  19. Economics

    1. Which of the following is the best example of a public good? A. Highway system B. Shopping mall C. Country club D. Movie theater 2. Which of the following is a characteristic of a public good? A. the private sector could provide it more efficiently B.

    asked by Clark
  20. math

    Jon Ericson bought a home with a 11.5% adjustable rate mortgage for 20 years. He paid $10.67 monthly per thousand on his original loan. At the end of 2 years he owes the bank $50,000. Now that interest rates have gone up to 13%, the bank will renew the

    asked by C
  21. Physics

    A ring (hollow cylinder) of mass 2.89kg, inner radius 5.35cm, and outer radius 6.35cm rolls (without slipping) up an inclined plane that makes an angle of θ=35.6°, as shown in the figure below. At the moment the ring is at position x = 1.87m up the

    asked by Andrea
  22. Chemistry 1111

    To determine the molarity of NaOH solution, student took 3.5 g of KHP (KHP – Potassium hydrogen phthalate; Molar mass = 204.22 g/mol) and dissolved in 50 mL of water and titrated with the given unknown molarity NaOH solution loaded in burette. His

    asked by Lowell
  23. Economics

    1. In the U.S free enterprise economy A. the proper role of government is clearly defined by economists and there are never disputes B. government's only role is to provide for the nation's defense C. the proper role of government is not clearly defined

    asked by Jordanne
  24. Physics

    A 0.142 kg remote control 24.0 cm long rests on a table, as shown in the figure(Figure 1) , with a length L overhanging its edge. To operate the power button on this remote requires a force of 0.355 N . How far can the remote control extend beyond the edge

    asked by Please Help Understand
  25. Science

    An object weighed 7N in air and 5N in water.If the object is immersed completely in water and the density of water is 1000kg m-3, calculate the ; (a) weight of water displaced, (b) Volume of the object (c) density of the object

    asked by Hazi
  26. Physics

    A 23.5 N force acts on a body for duration of 12.0 s. Compute the impulse that the body receives.

    asked by mocampo
  27. math

    The garage you work for as an auto mechanic measures 230 ft. by 150 ft and handles 69 cars. Using the existing garage as a model, how much space would you plan to have in your garage? Number of cars parked at any one time = 24. Required area of service

    asked by C
  28. Physics

    A ball is rolled off a horizontal roof at 6m/sec , after leaving the roof how long it will take to reach a speed of 10 m/sec? A. 0.20 seconds B. 0.81 seconds C. 1.8 seconds D. 2.5 seconds

    asked by SAGAR
  29. AP Chemistry

    Suppose you designed an experiment in which you burned a known quantity of magnesium in air. You used the product to determine how many moles of oxygen would react with the known number of moles of magnesium. Why would burning magnesium in air cause a

    asked by Jessica AP Chemistry
  30. Physics

    A roller coaster cart is pulled up to the top of the hill 45 m high before it plunges down to its lowest point, 5 m above the ground. What is the cart’s speed at this point? What is its potential energy if the mass of the object is 5 kg?

    asked by mocampo
  31. chemistry

    0.02 Moles of HCl were added to a buffer solution, prepared by fluxing 20 L of gaseous NH3 and 10 L of gaseous HCl, both measured in normal conditions, in 2L of water. Calculate the pH of the solution before and after the HCl addition. (Kb NH3 = 1.8 *

    asked by Anonymous
  32. CHEMISTRY

    What mass of sulphur must be burned to produce 64.0 tonnes of sulphur dioxide. . . So far, I have calculated the molecular mass of SO2( 64.1 ) . and then found out the number of moles of sulphur dioxide. ( 998.4) What to do now?

    asked by Clive
  33. math

    When Mr. Lucky starts betting, he has 3 dollars. On any bet, he 7. wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has.

    asked by andre
  34. AP Chemistry

    Is determining the excess reactant and limiting reactant an important part of a synthesis reaction? Is it an important part of a decomposition reaction? Explain.

    asked by Jessica AP Chemistry
  35. home economics

    Parts of home economics

    asked by Anonymous
  36. AP Chemistry

    Choose a chemical reaction involving two or more reactants. For this reaction, how do you determine which reactant or reactants are limiting? Explain.

    asked by Jessica AP Chemistry
  37. Physics

    A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?

    asked by Lucy
  38. math-steve

    When Mr. Lucky starts betting, he has 3 dollars. On any bet, he wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has. Mr.

    asked by andre
  39. chemistry

    Calculate the pH of a solution obtained dissolving 10 g of NH3 and 15 g of NH4Cl in 300 ml of water (Kb NH3 = 1.8 x10-5)

    asked by Anonymous
  40. chemistry

    Decomposition of nitrogen pentoxide in ccl4

    asked by viji
  41. Physics

    An object with an initial velocity of 4 m/s moves along a straight axis under constant acceleration.Three sec later its velocity is 14m/s.How far did it travel during this time? A.27 B.17 C.67 D.57 E.77

    asked by SAGAR
  42. Science

    A car is travelling in the velocity of 20m/s.After 30 sec it covers a distance of 1200m.calculate the accelaration of the car and final velocity of the car.

    asked by Dev
  43. Neuroscience

    What type of cell in the central nervous system plays an important role in the uptake and processing of neurotransmitter from synaptic clefts/

    asked by R.Indira
  44. roman numerals

    what is IX more than XC?

    asked by aya corneto
  45. Business Law

    Please help. The restaurant provides catering services to local businesses. Corporate clients paid by check or electronic transfers. A new customer paid for a catering order with a check for $575, made payable to the restaurant. Woods took the check to the

    asked by Patte
  46. Physics

    A neutral solid conducting sphere of radius R has charge Q deposited in it, and is sitting at the centre of a conducting shell of inner radius 2R and outer radius 3R. After the conductor reaches equilibrium, find the potential at R

    asked by Anonymous
  47. math

    how many committee of five people can be chosen from 20 menand 12 women if exactly three men must be on each committee and at least four women on each committee

    asked by rose
  48. Math

    How do you write 2.15 1/2 in expanded form. Our topic is transforming fractions in decimal form... but what is the fraction 1/2 doing there?

    asked by Joana
  49. Pre Calculus

    Assume that x, y, and a are positive numbers. Use the properties of logarithms to write the expression log a 9 xy in terms of the logarithms of x and y. a. 9logbx+9logby b. 19 l o g b ( x + y ) c. 19 l o g b x + l o g b y d. logbx+logby e. 19 l o g b x +

    asked by Jessica Maths
  50. chemistry

    To 100 mL of a 0.1M NH3(Kb=1.8*10-5)solution,200mL of a 0.1M NaOH have been obtained.

    asked by Anonymous
  51. Physics

    Can someone please explain how to tackle this problem? Cu - Anode electrode Zn - Cathode electrode A current of 2 amps is sustained for 16 minutes. what mass of Cu(s) is deposited on the zinc electrode? (Faradays' constant: 96500 C/mol e-) Please and thank

    asked by Sarah
  52. Physics

    A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?

    asked by Lucy
  53. Chem

    Can someone please explain how to tackle this problem? Cu - Anode electrode Zn - Cathode electrode A current of 2 amps is sustained for 16 minutes. what mass of Cu(s) is deposited on the zinc electrode? (Faradays' constant: 96500 C/mol e-)

    asked by Sarah
  54. Chemistry

    What is the required volume of an acid to prepare 2 L of solution a 10% (v/v).

    asked by Dylan
  55. English

    1. I'm particular about what I eat. 2. I'm picky about what I eat. 3. I'm choosy about what I eat. -------------------------- Are they all the same in meaning? Which one is commonly used? Do you have some more adjectives similar to 'picky'?

    asked by rfvv
  56. Physics

    You jump across and down a crevasse from rest. You land on the other side at a speed of 10.5 m/s directed 67.6° below the horizontal. The other side is 4 meters lower. How wide was the crevasse? No Idea if I am doing this right. But so far what I done was

    asked by Michael
  57. physics

    WHAT IS WORK?

    asked by Kenshin
  58. Analytical Chemistry

    What volume, in liters, of 1.09 M KOH solution should be added to a 0.102 L solution containing 9.35 g of glutamic acid hydrochloride (Glu, FW = 183.59 g/mol; pKa1 = 2.23, pKa2 = 4.42, pKa3 = 9.95) to get to pH 10.26? Should I start with molar

    asked by R
  59. math

    if m set of 22 mathematics teachers and p is the set of 25 physics teachers and if 2 teachers both mathematics and physics, how many elements has MUP.

    asked by jb
  60. chemistry

    Difference between a halogen and a halide? Explain using chemical formulas.

    asked by lo
  61. Physics/Mechanics

    Two part Question: A load of 1500N is to be at Height of 3m above the ground. The available Incline planes are 10 degrees and 40 Degrees to the horizontal. Find out the Work Done by effort on the 10 degrees and 40 Degrees ramps. Assume the coefficient of

    asked by Jamie
  62. Pre Calculus

    Identify the x-intercept of the function f(x) = 2 ln(x-3). a. x=3 b. x=0 c. x=2 d. x=4 e. The function has no x-intercept

    asked by Jessica Maths
  63. chemistry

    Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.

    asked by Anonymous
  64. math

    the number that is IX more than XC?

    asked by aya corneto
  65. PHYSICS

    A BRIDGE IS CONSTRUCTED WITH LUMP OF WOOD 15M LONG ITS PIVOTED AT 2M FROM BOTH ENDS RESPECTIVELY, A THIN AND FAT MAN OF MASSES 30KG & 90KG RESPECTIVELY,STOOD AT POINT A & B,4.5M AND 10M,WHAT IS THE REACTION EXPERIENCED AT THE PIVOT THE BRIDGE

    asked by NIKKI
  66. Math

    A square, where s is an odd integer, is divided into unit squares. All the unit squares along the edges and the 2 diagonals of a square are discarded. Find a fully simplified expression, in terms of s, for the number of unit squares remaining answer.

    asked by Jamie
  67. Prealgebra

    I've got a couple questions here, and I'm not sure how to solve any of them. 1. Armen is covering his countertop with new tile. His countertop is 3 meters long, and 2 meters wide. Each square tile is 10.5 centimeters on either side. Approximately how many

    asked by Jinx
  68. Physics

    A catapult is launching rocks at your village. It is hiding in a forest. All you can measure is that the rock just passes over an 8 meter tall tree that is 73 meters from the village and that it takes 3 seconds for the rock to arrive from that moment. How

    asked by Jay
  69. Physics

    You jump across and down a crevasse from rest. You land on the other side at a speed of 10.5 m/s directed 67.6° below the horizontal. The other side is 4 meters lower. How wide was the crevasse? No Idea if I am doing this right. But so far what I done was

    asked by Michael
  70. math

    please help me solve this problem quickly! John and Melanie are designing a science experiment for the school science fair. Their experiment requires a large amount of copper wire. They need 22 spools of copper wire that each contains 31 meters of wire.

    asked by Nicole
  71. science

    How many ml of alcohol are presentia,50ml bottle of rubbing alcohol?

    asked by jason ty
  72. science

    A molecule has 8percent sulphur.this Will have minimum molecular mass

    asked by saranya
  73. science

    10, 20 and 30 are the three sets of vectors acting on a body.Then their resultant is ???

    asked by Laxman Kunwar
  74. AP Chemistry

    The G value for formation of gaseous water at 298 K and 1 atm is -278 kJ/mol. What is the nature of the spontaneity of formation of gaseous water at these conditions?

    asked by Jessica AP Chemistry
  75. science

    A massive particle at rest with mass M breaks up into two unequal 'u' to the right and the other piece travels at 'v'. to the left. What are the rest masses of these two pieces?

    asked by Anindya biswas
  76. chemistry

    Calculate the pH of a solution containing 10 g / L of NH4Cl (Kb NH3 = 1.8x10-5

    asked by Anonymous
  77. chemistry

    0.01 mol of H2SO4 is present in its solution. Find the pH of the solution

    asked by answer please
  78. Physics

    The distance between any two points in a thermometer is 10cm.mercury level is 13 cm .temperature in Celsius?

    asked by YEDUKONDALU