# Gloria

Popular questions and responses by Gloria
1. ## Physics

In a simple machine, the energy input is 120j. If the efficiency of the machine is 80%. Calculate the energy output

2. ## geometry

A comet's path can be modeled by one branch of the hyperbola y2 1096 􀀀 x2 41334 = 1; where the sun is at the focus of that part of the hyperbola. Each unit of the coordinate system is 1 milloion miles. nd the coordinates of the sun(assuming it is at the

3. ## physics

If motor M exerts a force of F=(10t2+100)N on the cable, where t is in seconds, determine the velocity of the 25kg crate when t=4s . The coefficients of static and kinetic friction between the crate and the plane are μs=0.3 and 0.25 μk=0.25 . The crate

4. ## chayyenne

A 26' long painting is how many yards long?*

5. ## Maths

Convert 59.4 mi to km (1 m= 1.094 yd, 1 mi=mi=1760yd)

6. ## Analytical chemistry

Below i wrote a few problems, i did them all but in the book i don't have results, so i don't know if i did them right or not. I would really appreciate if someone would go through the problems and tell me if i got the right results. If i made a mistake

7. ## Analytical chemistry

A dilute perchloric acid solution was standardized by dissolving 0.2445 g of primary standard sodium carbonate in 50 mL of the acid, boiling to eliminate CO2, and back-titrating with 4.13mL of dilute NaOH. In a separate titration a 25mL portion of the acid

8. ## Math

Three people who work full-time are to work together on a project, but their total time on the project is to be equivalent to that of only one person working full-time. If one of the people is budgeted for one-half of this time to the project and a second

9. ## Sociology

Write a 700- to 1,050-word essay in which you complete the following: Give a brief introduction that identifies the issue you have chosen and why.Describe in three separate paragraphs how each perspective would view or explain the issue.Include in your

10. ## Chemistry

The following unbalanced equation describes the reaction that can occur when (II) sulfide reacts with oxygen gas to produce lead (Il) oxide and sulfur dioxide gas: PbS+O2---> PbO + SO2 Balance the equation and describe in words the electron transfers that

11. ## adverbs and other parts of speech

3. Which one of the following sentences does not contain a prepositional phrase?

Assignment for week 5 Given the following information, draw the project network. Compute the early, late and slack times for the project network. which activities are on the critical path have only the start or finish of the activity on the critical path?

13. ## Chemistry

please say if molecule is polar or nonpolar: H2 HBr BrCl CS2 H2S

14. ## MATH

solve the system of linear equations using the Gauss- Jordan elimination method x1- x2+ 4x3 = 15 x1+ x2 = X3 = 4 -3X1-X2 + X3 = -2

15. ## physics

A torque of 77.7Nm causes a wheel to start from rest , completes 5.55revolutions and attains a final angular velocity of 88.8rad/sec . What is the moment of inertia of the wheel?

16. ## Analytical chemistry

The iron in a 0.6656 g ore sample was reduced quantitatively to the +2 state and then titrated with 26.753 g of KMnO4 solution. Calculate the percent Fe2O3 in the sample. the mass i get for fe2o3 is too big, but i don't know how else to do this problem,

17. ## medical terminologhy

combining form and suffix to form number 1 abnormal softining of a kidney

18. ## Chemistry

When 50.0g of silicon dioxide is heated with an excess of carbon 32.2 g of silicon carbide I'd produced. SiO2(s) + 3C(s) → SiC(s) + 2CO(g) A. What is the percent yield of this reaction? B. How many grams of CO gas are made?

19. ## chemistry

In 1934, Edward A. Doisy of Washington Univeristy extracted 1361 kg og hog ovaries to isolate a few milligrams of a potent female hormone. Doisy burned 5.00 mg of this precious sample in oxygen and found that 14.54 mg of CO2 and 3.97 mg of H2O were

20. ## chemistry

If some of the CaCO3 in the sample had already formed some Ca(HCO3)2, will the volume of CO2(g) generated in the reaction be greater,less than or the same as in the experiment? Explain

21. ## calculus

A farmer wants to make three identical rectangular enclosures along a straight river, as in the diagram shown below. If he has 1200 yards of fence, and if the sides along the river need no fence, what should be the dimensions of each enclosure if the total

22. ## statistic

A marriage counselor conducted a study of couples, categorizing each of the couples as "communicative" or "non-communicative." Among other things, the counselor wanted to see whether the percentage of communicative couples whose marriage ended in

23. ## calculus

A spherical balloon is inflated so that its volume is increasing at the rate of 3.2 ft3/min. How rapidly is the diameter of the balloon increasing when the diameter is 1.1 feet?

24. ## Physics

A block is attached to a spring and set in motion on a horizontal frictionless surface by pulling the block back a distance 10cm from equilibrium. Now, replace the block with one double the mass and set the block into motion again by pulling the block a

25. ## math

waiting for my answer on the ageprime factors

26. ## PHI103

is it important for people to study logic

27. ## Psychology

In the 3 domains of development, why is it important to consider each domain in the study of adult development?

28. ## lee college

How many bromine molecules, Br2, have a mass equal to 31.8 g?

29. ## psychology

write a fictional,first person account of the creation and consequences of african americansin the united states

30. ## Math

In a senior secondary school,80 students play football or hockey.The number that play football is 5 more than twice the number that play hockey.If 15 students play both games and every student in the school plays at least one game,find (i)the number of

31. ## math

Nancy is 4 years younger than Monica. Seven years from now the sum of their ages will be 82. How old are they know?

32. ## English,sepedi,agriculture,economics,lifesciences,maths literacy & life orientation

Identify 3human rights violations or discrimination and explain in an introductory paragraph why you choose the specific human rights violation or discrimination

33. ## Pre-algebra

Which expressions are equal to 120 Multiple chose 1. 5! 2. 6! 3. 6p3 4. 12p10 I think the answers are 5! and 6p3

34. ## Math

Directions: Solve the following system of inequalities. 1.) 3x + 2y < 6 x > 0 y > 0 2.) 2x^2 + y ≥ 2 x ≤ 2 y ≤ 1

35. ## Computerized Accounting

Consider this statement: "QuickBooks records revenue when an invoice is generated, even though cash has not been received." Is this practice acceptable? Why or why not? What are noncash investing and financing activities, and how are they recorded in

36. ## chemistry

you have a metal tank containing 74.0moles of nitrogen gas at a pressure of 15.0atm.If the pressure is measured at a temperature of 20.0c,then the volume of the tank must be how many liters(Round answer to one decimal place.

37. ## Jefferson

Nitric acid and zinc react to form zinc nitrate, ammonium nitrate, and water. 4Zn(s) + 10HNO3(aq)→ 4Zn(NO3)2(aq) + NH4NO3(aq) + 3H2O(l) A. How many atoms of zinc react with 1.49g HNO3? B. Calculate the number of grams of zinc that must react with an

38. ## Calculus

f(x)= (-5x^3 + 3x^2 + 3x -5)/(-8x^2 +2x + 7) Find the equation of the non-vertical asymptote. y = ? Does f(x) intersect its non-vertical asymptote? (yes or no) If yes, what is the smallest value of x at which f(x) intersects its non-vertical asymptote?

39. ## maths

ALL OF JENNYS PETS ARE DOGS EXCEPT ONHE. HOW MANY CATS AND DOGS DOES JENNY HAVE,

40. ## Geography

i like to be a nusing

41. ## Algebra

The height of a triangle is 6 inches less than the base. The area of the triangle is 67.5 square inches. Find the length of the base and the height of the triangle.

42. ## math statistics

IQ scores in the US population have an average of µ = 100 and a standard deviation of σ = 15. Suppose a researcher wanted to test whether socioeconomic status (SES) has an effect on IQ scores. The researcher takes a random sample of n = 100 people,

43. ## Algebra

How would you solve the problem - A class wanted to collect 325 cans and on the first week they collected 135 cans, the second week they collected 89 more cans what will they need to collect on week three?

44. ## Math

How do i solve this -given that p and q are sets of real numbers such that p=(x:0 is lesser than or equal to x is lesser than or equal to 3)and q=(x:3 is lesser than x is lesser than 2),find p union q

45. ## Economics

Retrieve the average total cost function given that the total cost=Qsquared+5Q+6

46. ## Math

The sixth term of an appointment is 37 and the sum of the first sixth term is147 find the first term,find the sum of the first fifteen terms.

47. ## Information systems

Is video conferencing really a viable green alternative to travel for most companies

48. ## Chemistry

At 3745°C, K = 0.093 for the following reaction. N2(g) + O2(g) equilibrium reaction arrow 2 NO(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 2.0 g N2 and 3.0 g O2 are mixed in a 1.3-L flask. [N2] [O2]

49. ## U.S. History (help)

In the U.S. House of Reps. When California gains a representative, then another state must have what? How often can the number of representatives be adjusted? After a what?

50. ## calculus

Use implicit differentiation to find an equation of the tangent line to the curve 3xy^3+4xy=63 at the point (9,1)(9,1).

51. ## explore career

If john got paid \$12.00 an hour and he worked 40 hours, how much is his gross pay?

98.547/4.93 985-493=437 4377-4437=4877 4877-4437=4400 here's where we get stumped the calculator shows we should have a 9 in out answer

53. ## Math

find four consecutive odd integers such that the sum of the least integer and greatest integer is 164

54. ## Math

Find the volume of a cone with a radius of 4yd and a height of 10yd.round to the nearest tenth.

55. ## Math

If Mary ate two apples and Bob ate three apples, how many apples did Mary eat.

56. ## PHYSICS

A cell phone emits signs in approximately 750 Mhz. Which is the wavelength and energy of this radiation

57. ## Chemistry

2.16 grams of silver react with 3.20 grans of sulfur.Caculate the mass of silver sulfide produced (mass of ag=108.8g/mole)

58. ## Family Dynamics

One important approach for teachers working with diversity in individual families is to be __________________.

59. ## Statistics

for a population with m=62 and s=12, find the x value that corresponds to esch of the following z-scores: -0.25,-1.50,0.50,2.00

60. ## physics

you walk west for 52 m, then you walk 33.2° north of west for 44 m, and finally you walk due north for 25 m. Find the components of your final displacement, from your initial to final point, along the north and west directions.

The Kw of water varies with temperature. Calculate the pH of water at 46℃ with a Kw=1.219 x 10 to the negative 14th.

62. ## Chemistry

Iron -59 has a half -life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Show all calculations leading to a solution.

63. ## Chemistry

If 5.40 kcal of heat is added to 1.00 kg of water at 100C, how much steam at 100C is produced? sHOW ALL CALCULATIONS LEADING TO AN ANSWER. Q=m*Hf 5.4=m*80 m=5.40/80=0.0675kg

64. ## Math

Hi! I need help with this question. Thank you! Directions: Write the expression for the nth term of the following geometric sequence. 5, 10, 20, 40, ...

65. ## Math (ASAP)

Solve the following inequalities. 1.) 3x + 2y < 6 2.) 2x^2 + y ≥ 2

66. ## Accounting

Consider this statement: "QuickBooks records revenue when an invoice is generated, even though cash has not been received." Is this practice acceptable? Why or why not?

67. ## history

roosvelts phisophy and goverment

68. ## science

name four phylum under the five kingdoms

69. ## Algebra

you need 3 3/4 yards of material for 1 shirt how many shirts can you make with 116 1/4 yards of material

As preserve makes headway into the larger retail chains, what challenges will it face?

71. ## Chemistry

when the pressure on 2.5liters of oxygen is decreased from 2.0atm to 1.0atm,the volume of the gas becomes how many liters.(round answer to one decimal place.

72. ## Patterns,Algebra ans Functions

This line represents the line on a graph tha shows how long it took Khalil to walk to school.The horizontal axis shows the time and the vertical axis shows blocks covered.Explain what you think happened on Khalil's way to school?

mary smith purchased a new car for \$28,750. she made a 15% down payment and financed the balance at her bank for 3 years. what payments are required at the end of every month, at 18% interest, to pay off the loan?

74. ## asking for a teacher's opinion

Do you think rounding borderline letter grades up or down is a fair practice? Or should they just stay where they are? For example, I think that an 89.5% should round up to a 90%. I have one instructor right now who considers an 89.99% to still be a B

75. ## math

I am trying to help my grandson with a fraction problem, Mary has 12 marbles 3/12 are yellow,2/12 are blue and the rest are green, I need to explain how many of them are green where he will understand

76. ## math modeling

A spherical balloon has a radius of 11 centimeters. If we increase the radius by 2 centimeters, how much did the volume increase?

77. ## Analytical chemistry

I did the next problem, i don't have the results for it and i just want to know if i calculated the mass for Fe2O3 the right? A sample is a mixture of iron oxides (Fe2O3 and FeOOH). It's known that at 200°C this reaction occurs: 2FeOOH(s)-> Fe2O3(s) +

78. ## Analytical chemistry

What is a pH of 20 mL of 0.08 M NH3 added to 40 mL of 0.04 M HCl? NH3 + HCl = NH4+ + Cl- c(NH3)=(0.02L * 0.08M)/0.06L= 0.02667 M c(HCl)=(0.04L * 0.04M)/0.06L= 0.02667 M c(NH4+)=c(HCl) Kb=[NH4+][OH-]/[NH3] Kb=1.76*10^(-5) So i tried to calculate it like

79. ## Analytical chemistry

A Kjeldahl analysis was preformed upon a 0.055 g sample of impure biguanide (C2H7N5, fw=101.1). The liberated ammonia, collected in 40 mL of 4% boric acid was titrated with 19.51 mL of 0.1060 M HCl. Calculate the percentage of biguanide in the sample.

80. ## Analytical chemistry

A 5ml portion of table wine was diluted to 100 ml in a volumetric flask. The ethanol in a 20 ml aliquot was distilled into 100 ml of 0.05151M K2Cr2O7. heating completed oxidation of the alcohol to acetic acid: Ch3Ch2OH + 2Cr2O7(2-) +16H(+) -> 3Ch3COOH +

81. ## Analytical chemistry

A 25 ml sample of household bleach was diluted to 500 ml in a volumetric flask. An unmeasured excess of potassium iodide was aded to a 20 ml aliquot of the diluted sample; the iodine liberated in the reaction: OCl- + 2I- -> I2 + Cl- + H2O required 34.5 ml

82. ## math

a particle moves along the x-axis so that its velocity is proportional to x^2. Prove that its acceleration is proportional to x^3

83. ## substance

10-15 lines critically discuss 5 ways in which the human problem impacts on the community

84. ## nutrition

5 ways in which human or environmental problem impacts on the community

85. ## health

name 5 ways which human or environmental problem impacts on the community

86. ## Algebra 1

If the side of a rectangle measures 10.5 cm to the nearest millimeter,what is the upper bound and lower bound of the side of the rectangle?

87. ## Science

State in words the specific information conveyed by a label reading 0.25M Oxalic acid.

88. ## pre algebra

Actual train size 40 feet gives a model size of 3 inches which scale was used?

89. ## Physics

a car that weights 15000 N is initially moving at 60 km/hour when the brakes are applied. The car is brought to a stop at 30 meters. Determine the magnitude of the braking force

90. ## the parts of speech

10. In the following sentence, identify the part of speech of the italicized word. Catching fish is one of the oldest pastimes.

91. ## Geology

Wood fragments from the floor of a palace in Syria - Syro-Hittite period. Date: 675 ± 50 years BCE

92. ## chem

What mass of H2C2O4 can react with 35.0 mL of 1.50 M KMnO4 according to following equation?

93. ## chemistry

what is the molarity of a solution prepared by dissolving 63.0 g NaF in enough water to make 250.0 mL of solution?

94. ## chem

what is the mass in grams of the following 6.78 mol of NaI

95. ## aed204

top ten charactertistics of multiculturlal school

96. ## intentive spellers typically

a. write only words they are certain can be spelled corrctly. b. never learn conventional spelling c. omit consonants in words d. Progress through a serious of stages

97. ## math

The ages of a population of 300 is normally distributed, with a mean of 45 and a standard deviation of 4. If you randomly selected a member of the population, what is the probablity that his or her age would be greater than 49?

98. ## math

Solve for x. 3ln(x)-2=16+7ln(e)

99. ## phi103

ourarguments? Are there disadvatages to using this technique to make the structure of our arguments more explicit and clear?