Popular questions and responses by mimi
  1. Physics

    the potential energy of a particle varies with velocity v as U equals to Av3/v + B where A and B are constant dimensional formula A/B is (1) ML-1T (2) M-1LT (3) L-1T-1 (4) MLT-1

    asked on June 29, 2018
  2. Chemistry

    Two flasks A and B of equal capacity of volume contain SO3 and Co gas respectively under similar conditions of temperature and pressure. Then, which of the following statement is true? (1) A has twice the number of moles as that B. (2) B has twice the

    asked on June 29, 2018
  3. chem

    How many moles of chloroethylene contain 5.47X10^26 molecules

    asked on October 1, 2011
  4. trig

    Given that tan 45=1, use tan(x+y) to show that tan 22.5= /2 - 1. (/is square root sign

    asked on August 24, 2010
  5. Chemistry

    Four one litre flasks are separately filled with the gases CO2, F2, NH3 and He at the same room temperature and pressure. The ratio of the total number of atoms of these gases present in the different flasks would be? (1) 1:1:1:1 (2) 1:2:2:3 (3) 3:2:4:1

    asked on June 29, 2018
  6. Physics

    The voltage across a lamp is (6.0 +_ 0.1) V and the current flowing through it is (4.0 +_ 0.2) A. Find the power consumed with maximum permissible error in it?

    asked on June 22, 2018
  7. Chemistry

    Which of the following given ratio of units of length gives the highest value? (1) 1pm/1fm (2) 1hm/1Gm (3) 1dm/1μm (4) 1Mm/1nm

    asked on June 29, 2018
  8. Physics

    the dimensional formula of m(dv /dt) is (1) MLT-1 (2) M-1LT-1 (3) ML2T-1 (4) [MLT-2]

    asked on June 29, 2018
  9. Physics

    a wave function expressing displacement (y) as a function of its (x) and time (t) is given as y = P log (Qx + Rt) Which of the following expressions has dimensions different from one another? (1) yR (2) PR (3) R/Q (4) QR

    asked on June 29, 2018
  10. french

    kindly make 7 sentences with the verb ".HABITER". THANKS.....IAM A 4TH GRADE STUDENT.

    asked on October 15, 2010
  11. Algebra

    Shanice has budgeted $175 for new clothes. She decides to buy a pair of shoes that cost $47 and then buys some $18 shirts. Which inequality represents this situation where s is the number of shirts she can buy? 18s−47≤175 18s+47≤175 18s−47≥175

    asked on December 5, 2019
  12. Chemistry

    The total number of electrons in 1.6g of CH4 to that of 1.8g of H2O is?

    asked on June 25, 2018
  13. English

    Being unable to type the letter, the boss fired me. 1) It is a run-on. 2) It is a dangler. 3) It is a comma splice. 4) It lacks parallel parts.

    asked on April 5, 2008
  14. Chemistry

    Which of the following is TRUE for a system that is in dynamic equilibrium? A) The forward reaction goes to 100% completion. B) The concentration of products is equal to the concentration of the reactants. C) The reaction rate of the forward reaction

    asked on December 10, 2016
  15. Math

    A student earned scores of 85, 83, 90, 94, 88 and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?

    asked on March 21, 2011
  16. College Physics

    A uniform meter stick of mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance at a point 19.9 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale,

    asked on April 27, 2013
  17. physics grade 11

    1, Ebo through a ball into the air. its velocity at the start is 18m/s at an angle of 37° to the ground. a, Express the initial velicity in component vector form b, Work out the velocity of the ball as it lands. give answer in component vector form. c,

    asked on December 26, 2018
  18. Chemistry

    Equivalent weight of H3PO4 for the given reaction, H3PO4 + Ca(OH)2 = CaHPO4 + 2H2O is?

    asked on June 20, 2018
  19. Chemistry

    For the reaction Ag2S(s) ⇌ 2 Ag+ (aq) + S2- (aq), what happens to the equilibrium position if ammonium sulfate is added? A) doubles B) shifts to the left C) does nothing D) shifts to the right E) halves

    asked on December 10, 2016
  20. Statistics

    Explaining confidence. A student reads that a 95% confidence interval for the mean ideal weight given by adult American women is 140 ± 1.4 pounds. Asked to explain the meaning of this interval, the student says, “95% of all adult American women would

    asked on December 1, 2013
  21. physics

    1. A ball moving horizontally clears a net 2 meters high. What maximum speed can it have if it is to fall within 5 meters of the net? 2.A pulley system lifts a load of 800 Newtons, 20 centimeters while the rope pulling it moves 100 cm. a. How much force

    asked on October 18, 2011
  22. physics

    1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the parcel to hit the ground.. Assume no air resistance. a. How high is the jet? b. How far forward horizontally from the spot where

    asked on October 18, 2011
  23. Chemistry

    Identify the equation for which Keq = [Cu+]2[S2-]. A) CuS(s) ⇌ Cu2+(aq) + S2- (aq) B) 1/2Cu2S(s) ⇌ Cu+(aq) + 1/2 S2- (aq) C) Cu2S(s) ⇌ 2Cu+(aq) + S2- (aq) D) Cu2S(s) ⇌ Cu+(aq) + 2 S2- (aq) E) none of the answers

    asked on December 10, 2016
  24. grade 3 math

    1) what is the greates perimeter of a rectangle with an area of 39 square feet? 2) What is the least perimeter of a rectangle with an area of 32 square feet? 3) A rectangle has an area of 42 square inches. Which has a greater perimeter, the rectangle with

    asked on April 29, 2014
  25. grade 3 math

    two rectangles have an area of 36 square inches. Name two possible perimeters for the rectangles.

    asked on April 29, 2014
  26. physics

    A 33.3- kg block (m1) is on a horizontal surface, connected to a 5.1- kg block (m2) by a massless string. The pulley is massless and frictionless. A force of 220.1 N acts on m1 at an angle of 32.p deg. The coefficient of kinetic friction between m1 and the

    asked on February 20, 2014
  27. Algebra 2

    Find the arithmetic mean a n-1=3.9, a n+1=7.1

    asked on May 17, 2012
  28. physics

    A small steel ball rolls off a table (1 meter high) with a speed of 2 m/s. Where should they place a can (15 cm high; diameter 10 cm) to catch the ball?

    asked on October 18, 2011
  29. College Algebra

    verify the identity. cotx secx sinx=1

    asked on February 25, 2009
  30. Algebra 2

    Write a recursive formula for the sequence 15, 26, 48, 92, 180, ... Then find the next term.

    asked on May 17, 2012
  31. physics

    Consider the system shown in the figure below with m1 = 30.0 kg, m2 = 13.7 kg, R = 0.110 m, and the mass of the pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.60 m above the floor when it is released from rest. The pulley axis is

    asked on May 14, 2011
  32. Chemistry

    What combination of volumes (ml) of C2H4 and O2 are required to obtain 400ml of CO2? All volumes are measured at STP. 1. 100,300 2. 200,600 3. 200,200 4. 300,300

    asked on June 29, 2018
  33. LA

    which of the following sentences contains a pronoun in the nominative case? A. We packed bags for a trip to the beach. B. Our bags are decorated with beach balls. C. Hand him the bags and Mark will load the car. D. His car is packed full! Please Help God

    asked on February 26, 2018
  34. Math

    Three hundred people apply for three jobs. 80 of the applicants are women If three persons are selected at random, what is the probability that one is a woman? (Round the answer to six decimal places.)(d) If three persons are selected at random, what is

    asked on September 21, 2015
  35. Math

    The edge of a cube was found to have a length of 50 cm with a possible error in measurement of 0.1 cm. Based on the measurement, you determine that the volume is 125,000 cm3. Use tangent line approximation to estimate the percentage error in volume.

    asked on December 29, 2014
  36. chemistry

    Zinc reacts with hydrochloric acid according to the reaction equation Zn(s)+2HCL(aq)=>ZnCl2(aq)+H2(g). How many mm of 1.50M HCL(aq) are required to react with 9.05 g of ZN?

    asked on August 9, 2012
  37. chemistry

    if 250ml of nitrogen dioxide were collected over mercury at 72 degrees celsious and under pressure 675mm of mercury, how many grams of nickel reacted?

    asked on May 31, 2012
  38. college physics part 2

    the activity of a sample of carbon has one-eighth of the initial activity. carbon-14 has a half-life of 5730 yr. how old is the sample in yr?

    asked on April 18, 2010
  39. American History

    How did salutary neglect lead colonists to rebel against Great Britain? A) Great Britain’s Navigation Acts were favored over the Stamp Act. B) Great Britain could not raise enough revenue to fight the French and Indian War. C) It caused frustration when

    asked on September 13, 2019
  40. physics

    A crowbar ,1.5m long is used to lift a 100kg rock out of a hole 25cm deep.If the crowbar pivots 50cm from one end ,what is the force that must be used to just lift the rock ?

    asked on September 13, 2018
  41. Chemistry

    What volume of oxygen gas measured at 0°C and 1 atm is needed to burn completely 1L of propane gas measured under same conditions?

    asked on June 20, 2018
  42. math

    There are 37 people attending the Ruiz family reunion, and they want to split the cost of the present for the grandparents. If the gift costs $464.72, how much should each person contribute?

    asked on January 11, 2017
  43. English

    Please check this! The diction of "at the tourist centre in boston" can best be described as.. A. Emotionally charged B. Colloquial and relying on slang C. Informal and simple D. Mostly figurative I don't think it's C or D? My best guess is A.

    asked on September 8, 2016
  44. math

    The Flying Zucchini Circus Troupe has a human cannon- ball act, shooting a performer from a cannon into a spe- cially padded seat of a turning Ferris wheel. The Ferris wheel has a radius of 40 feet and rotates counterclockwise at one revolution per minute.

    asked on April 19, 2016
  45. Math

    is a trapezoid a parallelogram explain why or why not

    asked on April 5, 2016
  46. cs203

    Write a MIPS assembly language program that displays the binary string of the content of register $t0.

    asked on April 2, 2016
  47. Science

    use the idea of energy to explain how energy flows through food chains in the rock pool

    asked on July 12, 2015
  48. Math

    Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

    asked on April 6, 2015
  49. physics

    A block M1 of mass 16.5 kg sits on top of a larger block M2 of mass 26.5 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.425. The kinetic friction coefficient between the lower block and the flat

    asked on February 22, 2014
  50. physics

    A 33.3- kg block (m1) is on a horizontal surface, connected to a 5.1- $kg$ block (m2) by a massless string. The pulley is massless and frictionless. A force of 220.1 N acts on m1 at an angle of 32.p deg. The coefficient of kinetic friction between m1 and

    asked on February 20, 2014
  51. Early childhood

    Teachers usually ask more of this type of question even if it is NOT recommended: A. convergent. B. divergent. C. open-ended. D. recall.

    asked on August 25, 2013
  52. physics

    After 35 minutes of running, at the 8-{\rm km} point in a 9-{\rm km} race, you find yourself 200m behind the leader and moving at the same speed. What should your acceleration be if you are to catch up by the finish line? Assume that the leader maintains a

    asked on March 20, 2013
  53. Physics

    A cylindrical tank has a tight-fitting piston that allows the volume of the tank to be changed. The tank originally contains 0.140 m3 of air at a pressure of 3.20 atm. The piston is slowly pulled out until the volume of the gas is increased to 0.440 m3. If

    asked on April 17, 2012
  54. math

    What is the value of |-3-10|? -13, -7, 7 or 13

    asked on January 24, 2012
  55. algebra

    Shelly has $175 to shop for jeans and sweaters, Each pair of jeans costs $25, each sweater costs $20, and she buys 8 items. Determine the number of pairs of jeans and sweaters Shelly bought.

    asked on March 30, 2011
  56. microeconomics

    Assume you read in a newspaper that firms who produce baby milk are not doing well due to melamine case. With the theory of perfect competition in mind, what do you expect to happen to the baby milk prices? Will the firms able to make profits in long run?

    asked on January 6, 2011
  57. microeconomics

    “Competitive firms do not want to produce its goods even after an increasing marginal product has set in and the marginal cost is decreasing”. Do you agree?

    asked on January 6, 2011
  58. physics

    An amount of work equal to 3.5 J is required to compress the spring in a marble gun. If all energy is conserved, how much kinetic energy does a 25 gram marble have when it leaves the spring?

    asked on November 14, 2010
  59. physics

    A dart gun is fired while being held horizontally at a height of 1.38m above ground level, and at rest relative to the ground. The dart from the fun travels a horizontal distance of 7.76. A child holds the same gun in a horizontal position while sliding

    asked on September 4, 2010
  60. microeconomics

    For each of the following scenarios, decide whether you agree or disagree and explain your answer. a. If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street

    asked on August 14, 2010
  61. geometry

    Circle O has a radius of 8 m and the measure of central angle AOB is 45 degrees. Which of the following could be used to calculate the length of arc AB?

    asked on June 1, 2010
  62. Science

    Describe the plant life, animal life, and geology of the ecosystem in South Carolina. What populations and communities are present? How dependent is South Carolina on this ecosystem?

    asked on August 26, 2008
  63. Soc

    I am having a problem finding stuff about the evolution of formal organizations. Anyone know where I can begin?

    asked on June 1, 2008
  64. Science

    why has poor water quality become a problem and how human activities have contributed to the problem.

    asked on April 4, 2008
  65. accounting

    The following six column table for bullseye ranges includes the unadjusted balance as of december 31, 2005.

    asked on July 8, 2008
  66. Math accounting

    The following selected transactions were completed by Pilgrim Delivery Service during July: 1. Received cash from issuing capital stock, $115,000 2. received cash for providing delivery service, $58,000 3. Paid advertising expense, $2,000 4. Paid creditors

    asked on January 13, 2008
  67. math

    How do I know that x^2-7=y is a function? thanks you know its a function because its a parabola (x^2) parabolas are functions because there is only one x value per y value. So I know it is a function because it has (x^2)? Is that the rule? If it has x^2,

    asked on March 20, 2007
  68. Math

    4,x,y,32 are in GP, find x,y and the 11th term of the progression.

    asked on April 14, 2020
  69. geometry

    A kite flying in the air has a 12-ft line attached to it. Its line is pulled taut and casts an11 - ft shadow. Find the height of the kite. If necessary, round your answer to the nearest tenth.

    asked on February 3, 2020
  70. reading

    can someone help me find personification in brian's winter book please?

    asked on September 18, 2019
  71. Math

    complete the square X2-4x+y2+6y=0 Show work please

    asked on April 6, 2019
  72. Math

    what are the horizontal and vertical intercepts :r=4-4cos(theta) please show work

    asked on April 6, 2019
  73. Math

    A truck was carrying a load of 1,458 pounds of gravel. Another 1,731 pounds of gravel was loaded onto the truck. Olivia said that the truck now holds 3,189 pounds of gravel. Which expression can be used to check Olivia's answer, and is Olivia correct? A.

    asked on August 28, 2018
  74. literature and comprehention

    Whose ideas about nonviolent protest inspired King? A. Malcolm X B. Mahatma Gandhi C. John F. Kennedy D. Lyndon B. Johnson

    asked on August 26, 2018
  75. Math

    Mason wants to buy some pull toys for his dogs. Each toy costs $3. He knows that 1 toy costs $3, 2 toys cost $6, and 3 toys cost $9. How much will 4 toys cost? A. $15 B. $12 C. $11 D. $10

    asked on August 26, 2018
  76. Vocabulary

    I really need to exercise because I've been ______ lately. A. secure B. active C. limited D. inactive

    asked on August 26, 2018
  77. Vocabulary

    My dad is looking for a _______flight to Florida. A. cheap B. loose C. faint D. broad

    asked on August 24, 2018
  78. Physics

    A gallon starts rising from the ground from rest with an upward acceleration 2m/s^2. Just after 1s, a stone is dropped from it. The time taken by stone to strike the ground is nearly 1) 0.3s 2) 0.7s 3) 1s 4) 1.4s

    asked on July 13, 2018
  79. the length of a rectangular plate is measured by a

    the length of a rectangular plate is measured by a metre scale and found to be 10.0 CM its width is measured by vernier calipers as 1.00 CM least count of the metre scale and Vernier calipers 0.1 cm and 0. 01 CM respectively maximum permissible error in

    asked on June 29, 2018
  80. Physics

    if the unit of force is 10 Newton the unit of acceleration is 2 m/s2 square into velocity is 5 m/s then the unit of momentum is (1) 10kgm/s (2) 15 kgm/s (3) 25kgm/s (4) 30 kgm/s

    asked on June 29, 2018
  81. Physics

    a new unit equal of length is equal to 10 M the area of a m square expressed in term of new unit has a magnitude of (1) 0.05 (2) 0.50 (3) 5.05 (4) 5.00

    asked on June 29, 2018
  82. Chemistry

    How much volume will be occupied by 2 mole CO2 gas at stp?

    asked on June 25, 2018
  83. Chemistry

    Equivalent weight of crystalline oxalic acid is?

    asked on June 20, 2018
  84. Social Studies

    Why were many Eastern European countries associated with the Soviet Union after the World War 2??

    asked on February 6, 2018
  85. Math

    Kurt cut into wedges measuring 40 degrees if each person eats one piece of pizza how many people could he feed with two whole pizzas

    asked on April 19, 2017
  86. Homework Help Math

    Q. marx's clothing store is selling a lot of items. On Monday 495 items were sold. On Tuesday 450 items were sold. On Friday 593 items were sold. Marx's misplaced the totals for Wednesday and Thursday, but the average over the five days was 494 items per

    asked on March 14, 2017
  87. math

    There are 37 people attending the Ruiz family reunion, and they want to split the cost of the present for the grandparents. If the the gift costs $464.72, how much should each person contribute? do I just divide the two numbers?

    asked on January 11, 2017
  88. Chemistry

    A scintillation counter detects radioactivity by: A) none of the answers. B) emission of light from a NaI crystal when radioactivity passes through the crystal. C) ionization of argon gas in a chamber which produces an electrical signal. D) analyzing the

    asked on December 11, 2016
  89. Social Studies

    4. Favoring the idea of national regulation of trade between states would be an example of which political party's stance listed in the chart? (1 point) the Federalist Party’s belief in a strong central government the Democratic Republican’s support

    asked on October 20, 2016
  90. Social studies

    What is the name given to a hook or curved area of land that extends into a sea or a Ocean

    asked on September 23, 2016
  91. Foundation Chem

    Why do we need to keep water warm in a limiting reactant experiment around 80 to 90 degree celcius

    asked on July 29, 2016
  92. math

    A spinner is divided into 8 equal parts. They are numbered 1-7 and the 8th has a star. What is the probability of it landing on the star?

    asked on July 18, 2016
  93. Math

    what is the greatest perimeter of a rectangle with an area of 39 square feet

    asked on May 2, 2016
  94. math

    lamar made a garden in the shape of a rectangle with an area of 36 square feet. The shorter side of the garden measures 4 feet. Explain how you can find the perimeter of the garden

    asked on April 28, 2016
  95. Math

    Name the lengths of the sides of three rectangles with perimeters of 12 units. use only whole numbers

    asked on April 14, 2016
  96. Math

    draw one diagonal in the shape for exercise 8

    asked on April 4, 2016
  97. Math-7th grade

    A scale drawing is a parallelogram with a base of 8 inches, a height of 3 inches, and a side length of 4 inches. What is the perimeter and area? Perimeter 3x4x8 = 96 inches Area 8x3 = 24 inches Can this be correct? Sounds too easy. If it is correct, what

    asked on March 28, 2016
  98. Real Analysis (Math)

    Prove x < y + ϵ for every ϵ > 0 is equivalent to x 0. I thought it may be trivial, but I am not sure. HELP!!

    asked on February 26, 2016
  99. Discrete Math

    Prove that (A ∩ B) ∪ C= A ∩ (B ∪ C) if and only if C ⊆ A. I really need some help on structuring the proof!

    asked on February 25, 2016
  100. algebra

    write an inequality that represent the fact that while make a product you cant exceed 5,000. answer: x < 5000

    asked on October 16, 2015


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