# Andy

Popular questions and responses by Andy
1. ## Pre calc

sin(θ + ϕ); sin(θ) = 5/13 θ in Quadrant I, cos(ϕ) = − 2root 5 over 5 ϕ in Quadrant II please give final answer this is bc i have a lot of trouble simplifying the final answer thank you

2. ## Maths Lit, Accounting, Economics, Business Studies

I am a grade 10 learner doing Maths Literacy, Accounting, Business Studies, Economics, Life Orientation, English and Afrikaans I want to know what Degree I can study in University and also to check what career path I would be able to do.

3. ## Chemistry

What is the correctly balanced reaction for a Li-Cr voltaic cell?

4. ## Chemistry

Changing the temperature of an electrochemical cell will affect which two variables? A: the reactivity of the metal electrode and the concentration of the electrolyte fluid B:the free energy of the half-reaction and the reaction rate C: the free energy of

5. ## math

a pantry contains 6 shelves each 42 inches long. the shelves are to be reclined with fresh paper. the paper is sold in 1 yard rolls. the number of 1 yard rolls needed is:

6. ## trig

Let (theta) be an angle in quadrant II such that csc(theta)=8/5 Find the exact value of tan(theta) and cos(theta).

7. ## Corporate Finance

19. Fool Proof Software is considering a new project whose data are shown below. The equipment that would be used has a 3-year tax life, and the MACRS rates for such property are 33%, 45%, 15%, and 7% for Years 1 through 4. Revenues and other operating

8. ## physics

Spaceship I, which contains students taking a physics exam, approaches Earth with a speed of 0.640 c, while spaceship II, which contains instructors proctoring the exam, moves away from Earth at 0.280 c, as in Figure P26.27. If the instructors in spaceship

9. ## books "A Thankless Experience" Short Essay Help

This is the story: A Thankless Experience by Stephen Lautens. The story is on the internet. jiskha does not allow me to post the url The question is: Provide two examples of figurative language used by Lautens in his essay and describe the effect of each

10. ## Calculus

The curve y = x/(1 + x^2) is called a serpentine. Find an equation of the tangent line to this curve at the point(2, 0.40).(Round the slope and y-intercept to two decimal places.)

11. ## physics

A car weighing 1.0 x 10^4N is parked on a 34 degree slope. The brakes fail and the car starts to slide down the hill. Assume no friction. Show your work, and determine a) the acceleration of the car, and b) after it has moved 28.0 m, how fast is it moving?

12. ## chemistry

The solubility product constant (Ksp) for the dissolution of PbSO4 as represented by the chemical equation is 1.7x10-8. PbSO4 (s)= Pb2+ (aq) + SO42- (aq) Calculate the mass (g) of PbSO4 that dissolves in 1100 mL of water.

13. ## pre calc

tan(θ + ϕ); cos(θ) = − 1/3 θ in Quadrant III, sin(ϕ) = 1/4 ϕ in Quadrant II I am really struggling with this idk why I keep getting the wrong answers

14. ## CHEMISTRY

although helium atoms do not combine to form He2 molecules is it fair to say that London dispersion forces (induced dipole forces)are what attract He atoms weakly to one another? The other choices are dipole-induced dipole forces Hydrogen bonding

15. ## CHEMISTRY!!/science

A mixture of CO2 and an unknown gas was allowed to effuse from a container. The carbon dioxide took 1.25 times longer than the unknown gas to escape.Which of the following gases could the unknown one be Choices A: Cl2 B: CO C: HCl D: H2 E: SO2 I am going B

16. ## CHEMISTRY!!

Which of the following is NOT a postulate of the kinetic molecular theory? A; the average kinetic energy of the particles is directly proportional to the absolute temp. B;the forces of attraction and repulsion between the particles are insignificant C:the

17. ## Chemistry

15.0 mL of 0.30 M sodium phosphate solution reacts with 20.0 mL of 0.23M lead(II) nitrate solution. What mass of precipitate will form?

18. ## Physical Edu

The transformation of love progresses in the following way: a. high levels of passion, increasing intimacy, diminished romance, enduring love. b. high levels of passion, increasing intimacy, diminished romance, breakup of relationship c. sex, passion,

19. ## Finance

You want to be able to withdraw \$25,000 from your account each year for 20 years after you retire. If you expect to retire in 25 years and your account earns 7% interest while saving for retirement and 6.7% interest while retired Round your answers to the

20. ## science

I need an acrostic poem about forces

21. ## hysical edu

Roger is a single father of two young daughters and has been dating Cheryl for the past two years. He recently learned that his company is going to downsize. Although Roger is financially stable, he is worried that his job is in jeopardy. He hasn't told

22. ## Math

Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 400 more points than Katie. If you let l= l= the number of points that Lisa scored, and k= k= the number of points that Katie scored, then the problem can be

23. ## SCIENCE/CHEM

the volume of a sample of gas is 650.ml at STP. what volumes will the sample occupy at 0.0degrees celsius and 950.torr??? is it 650.ml?

24. ## English

clive looked up at a dictionary page with the guide words - MOB and MOP write a list of words that might be found on the page pleasehelp

25. ## A Thankless Experience

I really need help on this question it is worth 5 marks. The question is: Explain how "A Thankless Experience" is a satire with support with direct reference to the essay. The short essay is called A Thankless Experience by Stephen Lautens' Thank you :)

26. ## physics

Along a straight road through town, there are three speed-limit signs. They occur in the following order: 56 , 33 , and 24 mi/h, with the 33 -mi/h sign located midway between the other two. Obeying these speed limits, the smallest possible time tA that a

27. ## physical Edu

Which is a common expectation that can hurt a relationship? a. expecting your partner to change b. expecting that your partner loves you c. expecting intimacy d. expecting that you can trust your partner is it A

28. ## physcial Edu

All of the following are recommended by your text as time-management strategies, EXCEPT a. setting priorities. b. breaking down long-term goals into short-term ones. c. avoiding unstructured time. d. keeping track of tasks you put off. is it C

29. ## income tax

Marion drives 20 miles a day from his first job to his second job. He worked 125 days during 2011 on both jobs. What is Marion's mileage deduction rounded to the nearest dollar assuming he uses the standard mileage rate and mileage is incurred ratably

30. ## tax

In order for an employee to deduct home office expenses, which of the following must occur? a. There must be no other fixed business location. b. The taxpayer's most important activities must occur in the home. c. The home office must be for the

31. ## tax

At the beginning of 2011, Melissa was permanently transferred from her office in New York City to New Jersey. Her office in NYC is 15 miles from her old NY home. For Melissa to meet the distance test for qualifying moving expense deductions, how many miles

32. ## tax

In 2011, the Chens' pleasure boat was severely damaged by a hurricane in an area that was declared a federal disaster area. They had AGI of \$110,000 in 2011. The following information relates to the craft: cost basis \$95000 FMV before casualty \$145000 FMV

33. ## Chemistry

How many liters of excess reactant would be left when 3.00 liters of nitrogen monoxide is mixed with 2.00 liters of oxygen and allowed to react at 695 torr and 27 degrees Celsius to produce nitrogen dioxide

34. ## Physics

A block of mass 5kg is lifted 2m in 3sec. Find the work done.

what is the hydrogen ion concentration of an aqueous solution with a pOH of 9.262? I got 5.47X 10 ^-10 is this correct? Thanks Andy

36. ## SCIENCE/CHEM

Bromine exists as a mix of bromine 79 and bromine 81 isotopes. an atom of bromine 79 contains: 35 prot.44.neutr.35 electrons 35 prot.and 35 electrons only 44 prot.44 elect and 35 neutr. 35 prot.79 neutr. and 35 electrons 79 protons 79 electrons and 35

37. ## Algabra

!@#\$%^& is younger than Tom, but older than Harry. Their ages in years are consecutive odd integers. !@#\$%^&'s mother is three times as old as !@#\$%^&, and she is also 13 years older than twice as old as Tom. How old are Harry, !@#\$%^&, and Tom

38. ## Collage Physic

A uniform rod hangs vertically on a frictionless horizontal axle passing through its center. The rod is 35cm long and 85g. A 15g ball of clay travelling horizontally at 2.5cm/!@#\$%^&s and sticks to the bottom of the rod. What is the maximum angle the rod

39. ## chemistry

What type of chemical rxn is Na2SO4(aq) +Ba(NO3)2(aq) the product is BaSO4(s) + 2NaNO3(aq)?what is its net ionic equation?

40. ## Math

If A represents the number of apples purchased at 15 cents each, and B represents the number of bananas purchased at 10 cents each, which of the following represents the total value of the purchases in cents? a) A+B b) 25(A+B) c)10A+15B d) 15A+10B

41. ## Microeconomics

3. An industry currently has 100 firms, all of which have fixed costs of \$16 and average variable cost as follows: Quantity Average Variable Cost 1 \$1 2 2 3 3 4 4 5 5 6 6 1) The price is currently \$10. What is the total quantity supplied in this market? 10

42. ## Chemistry

Experiment Na2C2O4 is added to Pb(NO3)2.Precipitate forms (I think its PbC2O4). After the liquid above was decanted to another container. Dilute HNO3(aq) was added to it. The decanted cloudy solution cleared up a little but it was kinda cloudy still. Im

43. ## law

Which of the following is NOT truly an advance directive? A. Living will B. Do not resuscitate order C. Advance funeral arrangements D. Designation of a health care surrogate is it B im confused

44. ## Chemistry (The Composition of an Atom)

In 1808, John Dalton wrote his atomic theory of matter. The following is a list of points from that theory. If it is still considered true today, label it true. If it is not considered true today, label it false. 1)Atoms cannot be subdivided. 2)Atoms

45. ## Corporate Finance

1. The Federal Reserve recently shifted its monetary policy, causing Lasik Vision's WACC to change. Lasik had recently analyzed the project whose cash flows are shown below. However, the CFO wants to reconsider this and all other proposed projects in view

46. ## physics

A wheel initially rotating at an angular speed of 1.2 rad/s turns through 34 revolutions during the time that it is subject to angular accelaration of .4 rad/s/s. How long did the accelaration last? So I used theta=Wot+.5at^2. converted rev to rad. and set

47. ## Physics 11

SPH3U1 Two blocks of mass 500.0 g and 200.0 g are suspended vertically as shown in the diagram. The top string is lifted vertically upwards with a force of 8.48N on the 500.0 g Block (sorry no diagram) Thank you very much for your help

48. ## Math

a gasoline pump delivers 4 2/5 gallons of gas per minute. How many minutes will it take to fill a gas tank that holds 16 1/2 gallons?

49. ## Pre-Calculus

A drug manufactured by a pharmaceutical company is sold in bulk at a price of \$150 per unit. The total production cost (in dollars) for x units in one week is C(x) = 0.02x^2 + 100x + 3000. How many units of the drug must be manufactured and sold in a week

50. ## statistic

Although there is a popular belief that herbal remedies such as Ginkgo biloba and Ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well-controlled research (Persson, Bringlov, Nilsson, and Nyberg, 2004).

51. ## Calc

Compute Δy and dy for the given values of x and dx = Δx. y = x^2 − 7x, x = 6, Δx = 0.5

52. ## LA

Rewrite using a possessive noun: the (separate) bikes of Keith and Frank, the brooms of the witches, and the dog of Mike and Erin

53. ## Physics

A 25 g bullet with a muzzle velocity of 300 m/s is fired into a board 4.0 cm thick. For a soft board, the bullet goes through the board and emerges with a speed of 50 m/s. What was the average force exerted on the bullet by the board? Answer= 27344 N Show

54. ## AP Calculus AB

Hello! I'm having trouble with this related rates problem: A 5ft tall person is walking away from a 16ft tall lamppost at a rate of (2/x) ft/sec, where x is the distance from the person to the lamppost. Assume the scenario can be modeled with right

55. ## math

Nolan practices the piano for 1 2/5 hours every Saturday and Sunday. How long does he practice each weekend? Express your answer in hours and minutes.

56. ## physics

what is the heat required to convert 0.1 kg of melting ice into steam at 100 degree celcius

57. ## chemistry

What would Qc be if the volume of the container decreased by a factor of 1.774 for the following reaction? PH3(g) + BCl3(g) → PH3BCl3(s) KC = 534.8 at 353.0oC

58. ## Chemistry

For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?

59. ## Chemistry

What is the lattice energy of NaI? Use the given information below. Heat of formation for NaI = -288.0 kJ/mol Heat of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.0 kJ/mol Bond dissociation energy for I2 = 149 kJ/mol Electron affinity

60. ## Physics

elbow raises a 1200 N piano a distance of 5 meters using a set of pulleys. elbow pulls in 20.0 meter of rope while exerting a force of 340 N. a) what is the work output? b) what is work input c) what is the mechanical advantage of this machine? d) what is

61. ## Geometry

Circle G with center O is tangential to PA at A . Line PO extended intersects G at B (PO

62. ## Math (Pre-Cal)

The infinite series S = 1/5 + 3/5^3 + 5/5^5 + 7/5^7 + 9/5^9 + ... converges. Find S.

63. ## physics

A diver springs upward from a board that is 3.90 m above the water. At the instant she contacts the water her speed is 14.9 m/s and her body makes an angle of 60.3 ° with respect to the horizontal surface of the water. Determine her initial velocity, both

64. ## physics

A golf ball is dropped from rest from a height of 8.20 m. It hits the pavement, then bounces back up, rising just 5.40 m before falling back down again. A boy then catches the ball when it is 1.40 m above the pavement. Ignoring air resistance, calculate

65. ## physical Edu

The fight-or-flight response prepares the body for physical action regardless of whether action is needed. is it True

66. ## Chemistry

A saturated aqueous solution of calcium hydroxide has a pH of 12.25. What is the [Ca 2+] of such a solution?

67. ## income tax

Which of the following conditions requires an employer to use the electronic deposit requirement? A. Employer made more than \$100,000 in total tax deposits in 2009. B. Employer made more than \$100,000 in total tax deposits in 2010. C. All employers are

68. ## Tax

Kobe is a single dad with two dependent children, Lizzie, age 7 and Leslie, age 3. He has AGI of \$51,000 and paid \$6,300 to a qualified day care center. What amount of credit can Kobe receive for the child and dependent care credit? A. \$600 B. \$1,200 C.

69. ## tax

Taxpayers who contribute to or withdraw from an HSA during the year must: A. attach a written note to their tax return. B. file a Form 8889 and attach it to their Form 1040. C. do nothing. D. report it on Schedule A. is it B

70. ## Legal Research

Can somebody please help me with his I don't know what to do? While researching a legal issue for your supervising attorney, you stumble across a brand new decision that appears to pertain to your research assignment. The ruling court just ruled on the

71. ## Math - Data Management

I'm kinda stuck on my math homework, does anyone know how to do it? The results of a blood test at a medical lab are normally distributed with a mean of 60 and a standard deviation of 15. How low must a score be to lie in the lowest 5% of the results?

72. ## Algebra 1

Explain the differences between solving these two equations: •log3(x - 1) = 4 AND log3(x - 1) = log34 I think it has to deal with the formulas?

73. ## science

Do plants grow better with tap water or distilled water?

74. ## Biology

Under what conditions does asexual reproduction in sponges occur? Does it depend on time of year, availability of food, or other factors?

75. ## CHEMISTRY

I am confused about this statement about water Which of the following is TRUE regarding water only covalent bonds are broken when ice melts (dont think so) all of the staements (A-D) are false energy must be given off in order to break down the crystal

76. ## science/chemistry

Dr Bob Although helium atoms do not combine to form He2 molecules. is it true to say that He atoms are weakly attracted to one another from London dispersion forces (induced dipole forces) or is there another force at play? It cant be Hydrogen

77. ## chemistry

I also had a problem with this type of questionthe initial pressure of NOCl(g) is 4.329 atm, calculate the % of NOCl(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kp at 400.0 °C is 1.99. The initial

78. ## Corporate Finance

1. Langston Labs has an overall (composite) WACC of 10%, which reflects the cost of capital for its average asset. Its assets vary widely in risk, and Langston evaluates low-risk projects with a WACC of 8%, average projects at 10%, and high-risk projects

79. ## trig

A population of wolves in a country is represented by the equation p(t)=80(0.98)^t, where t is the number of years since 1998. Predict the number of wolves in the population in the year 2008.

80. ## trig

lx - 2l - lx + 2l > x The absolute value of x - 2 minus the absolute value of x + 2 greater than x. What is the Answer Please Help!

81. ## physics incline

A cord connected at one end to a block which can slide on an inclined plane (incline 27 degrees) has its other end wrapped around a cylinder resting in a depression at the top of the plane (and the other angle at bottom is not a right angle, but 58

82. ## English

Please check my essay and make corrections. In the famous play, Julius Caesar, the most important characters would have to be Caesar and Brutus. Each character has its distinctive role, Caesar as the ruler of Rome and Brutus as one of the Caesar¡¯s best

83. ## Chemistry

3Cu+8HNO3--> 3Cu(NO3)2+ 2NO+4H2O How many moles of HNO3 are required to react with 6 moles of Cu? How many moles of Cu(NO3)2 are produced when 3 moles of Cu react? How many moles of Cu must react to produce 4 moles of NO? If 4 moles of NO are produced, how

84. ## science and medicine

I don't have any idea how to solve this. Could someone show me the steps in solving this word problem? I am at a loss! Abus leaves a station at 1 pm., traveling west at a rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east

85. ## Science

Why pars distalis is not a good candidate for transplantation?

86. ## Algebra

Find all of the points of the form (x, −1) which are 4 units from the point (3,2)

87. ## Calculus - Related Rates

A road perpendicular to a highway leads to a farmhouse located 5 miles away. An automobile traveling on the highway passes through this intersection at a speed of 65mph. How fast is the distance between the automobile and the farmhouse increasing when the

89. ## phsyics

The x and y components of a certain force are measured and found to be Fx = (68 ± 3)N and Fy =(42 ± 2) N, respectively. Calculate the magnitude of this force? expressing your result to the proper number of significant figures.

It is required to titrate ethanol solution .Being available a 0.2mol/l potassium dichromate solution and 4mol/l sulfuric acid solution on the presence of a convenient indicator. a)indicate the glassware used for titration. b)give a brief description of the

91. ## art

how Picasso used shape or form in the Weeping Woman, and the effect of that usage on the artwork.

92. ## History of Muslims

1)what is the reason for the battle of uhud? 2)why did Wahshi al habashi want to kill hamza (the prophet mohammad's uncle)? 3) What was the prophet's plan on this battle ? 4)how many soldiers were in the muslims army and in the meccan army? 5)Why did the

93. ## la check

which of the following is not a major point of view first person third person fourth person limited (THIS ONE)

94. ## physics

A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +1.2. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror?

95. ## Chemistyr

A 55.29-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? (Ignore significant figures for this problem.)

96. ## math

Math two/y=2 ___ ____

97. ## chemistry

What is the [CH3NH3+] of a solution which is 0.1003 M in CH3NH2 and 0.1204 M in CsOH? CH3NH2(aq) + H2O(l) « CH3NH3+(aq) + OH−(aq)

98. ## chemistry

What is the [C7H5O2−] in a solution which is 0.1283 M in HC7H5O2 and 0.1364 M in HBr? HC7H5O2(aq) + H2O(l) « C7H5O2−(aq) + H3O+(aq) Ka = 6.5000e-5