# frank

Newest questions and responses by frank
1. ## Physics

During a parachute jump, the person is initially in free fall and then the parachute is opened. While in free fall, there are two forces acting on the jumper-gravity and air fraction. The faster the jumper is at falling, the more air friction there is. At

2. ## Math-Ms sue

Need Help with my final 2 questions can someone please help What is the additive inverse of 38? A –38 B. 38 C -(- -39) D. -(-(-(-38))) Which property is shown by –6+0= -6 Commutative property of addition identity property of addition Distributive

3. ## Math- Ms Sue

Hey Ms. Sue I was doing my test then i got stuck on this question can you help me out please thanks. What is the difference between |-3 | and -3?

4. ## History

Which mostaccurately characterizes the Eisenhower era? It was a time of economic sluggishness and social unrest, as Communist protest groups grew in influence. It was a decade of economic recession and hard times for Americans, but industrial expansion in

5. ## physics

A body is projected at an angle of 30 degree with the horizontal at initial speed of 200m/s. In how many seconds will it reach the ground? How far from the point of projection will it strike?

6. ## social studies

What happened as a result of a meeting between A. Phillip Randolph and Franklin Roosevelt? a. The employment of skilled African American workers doubled*** b. African Americans threatened a march on Washington, D.C. to protest discrimination c. Roosevelt

7. ## history

Why was military leadership allowed to take control of Japan after World War I A) Japan wanted to continue fighting the war to gain additional land. B) Japan feared communism and vowed to keep it out of the country. C) Military leaders stepped in to regain

8. ## algebra

Solve the equation using the zero-product property. -9n(5n-5) a. -1/9, 1 b. 0,1***** c. -1/9,-1 d. 0,-1 Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2-6=x a. x=2,3 b. x=-2,3 ***** c. x=2,-3 d. x=-2,-3 How

9. ## math

simplify (7)/(2a)*5/(a^2) a. 35/(2a^2); where a ≠ 0 b. 35/(2a^2) i know the answer is one of these two and not c or d, but im not sure if its a or b

10. ## math

divide. (12t^6 - 8t^8) ÷ (2t^3) a. 6t^3 - 8t^8 b. 12t^6 - 4t^5 c. 6t^2 - 8t^4 d. 6t^3 - 4t^5

11. ## algebra

parallel lines have ____ slopes. same?? perpendicular lines have ____ slopes. ??

12. ## History

Which option accurately describes how the philosophy of humanism impacted the Spanish Inquisition? A. Catholic and Protestant inquisitors combined forces using humanist philosophy as a backbone to justify persecuting Muslims. B. Humanist philosopher

13. ## history

Which option accurately describes Martin Luther’s influence on the Protestant church? A. Under Luther’s recommendation, Protestant clergy members were to be known as Imam, Sheik, or Mullah. B. Under Luther’s leadership, Catholic clergy members led

14. ## World History

Which option most accurately explains the shift toward humanist thought on people’s self-perceptions during the Renaissance? A.People who embraced humanist thought practiced flagellantism (whipped themselves with a belt) to repent for their sins.

15. ## Math

A city park employee collected 600 cents in nickels, dimes, and quarters at the bottom of the wishing well. There were 10 nickels, and a combined total of 25 dimes and quarters. How many dimes and quarters were at the bottom of the well?

16. ## Physics

a) Why do you think our eyes fail to see object clearly at varous distances? b) (i) Explain how image of an object is formed in the human eye (ii) What are ciliary muscles? Explain the function of these muscles c) Discuss the similarities and differences

17. ## Physics

A 0.5kg ball dropped from a height of 2.4 m above the floor. if an impact with the floor it loses 3 joules of energy, how high will it bounce?

18. ## ICD-10 coding

A patient with known carcinoma of the pancreatic head is admitted with a Hgb of 9.1. She has been receiving Docetaxel chemotherapy and the physician diagnosed this new anemia as an adverse effect of the chemoterapy. The patient is treated with darbepoetin

19. ## math

a lorry tank was 3/5 full of petrol , 21 liters was added and it is now 5/6 full. how many liters of petrol can the tank hold

20. ## Math

Three circles which touch each other externally with the center of the circles at A, B, C form a triangle with size of 9cm, 7cm, 6cm.calculate the radii of the circle

21. ## AP Chem

Write the overall net-ionic reaction that occurs when iron (ii) hydroxide (Fe(OH)2, Ksp = 7.9 x 10^-15) is dissolved in a 0.500 M sodium cyanide solution forming a complex ion. (Fe(CN)6^4-, Kf = 7.7 x 10^36) Determine the value of the equilibrium constant

22. ## social studies

Which of these events during the Age of Exploration was a cause of the other three? A) warfare increased as European nations competed for land and power B) advances in learning and technology made long ocean voyages possible C) Europeans brought food,

23. ## math

How long will it take an 8% simple interest rate for \$850 to amount to \$1000?

24. ## Math (Geometry)

Linerar Equations Hourly rate of \$8.00 an hour for a guaranteed 40 hours

25. ## Chemistry

Hi, wondering if anyone can help with the following problem: A solution of NH3 (kb=1.8x10^-5) has a ph of 11. what is the molar concentration of NAOH? I am unsure how to go about this however i have tried [10^-3][10^-11]/ 1.8x10^-5 with no success. Thanks

26. ## algebra

The sum of three numbers is 82. One of the numbers is 9 more than one of the others. Represent the numbers in terms of one variable.

27. ## math

A chemist test involves measuring two independent quantities A and B, the expressing the results of the test as C such that C= 3A-0.5B. Give that A is normally distributed with mean 10 and standard deviation of 1, and B is also normally distributed with

28. ## Maximal area and dimensions of a window

Hey Jiskha, came across this problem in my maths homework and I can't seem to solve it. Can someone maybe help me out? A Norman window has the shape of a rectangle with a semi circle on top; diameter of the semicircle exactly matches the width of the

29. ## math

Hi guys, I am really stuck with this problem, maybe somebody could help me out. A rancher has 2100 feet of fencing with which to construct adjacent, equally sized rectangular pens as shown in the figure above. What dimensions should these pens have to

30. ## Finite math

A bank account pays interest at 12% compounded monthly, and has a monthly fee of \$10, deducted at the end of each month. If \$13,000 is deposited on January 1, 2013, how much is in the account on January 1, 2016? I have done some question related to

31. ## Physics

The density of copper is 9.8×10^3 and the density of gold is1.9×10^4. When the two wires of these two metals are held under the same tension the speed in the gold wire is found to be half of that of the copper. What is the ratio of the diameters of the

32. ## C++

// Program: name of program // Author: your name // Date Written: date you began writing the program /* Abstract: Brief description of the program */ Include in-line comments in the body of your program. You can convert temperature from degrees Celsius to

33. ## Math

This is a cross product problem: Given uxv= find (u-5v)x(u+4v) I appreciate your help Thank you!

34. ## Math

1. what is the solution of 87 + (-396)? A 183** B -183 C 9 D -9 2. Evaluate: -12 x 3 =? A 36 B -36** C 4 D -4 3. Evaluate: -20 ÷ -10 =? A 200 B -200 C 2 D -2*** 4. Select all the problems that have a solution that is negative. -8 + 10 = ? 8 x (-2) +? -4

35. ## Physics 11

A mass of 10 kg, initially at rest on a horizontal frictionless surface, is acted upon by a horizontal force of 25 N. The speed of the mass after it has moved 5.0 m is: . a)  5.0 m/s   . b)  10 m/s   . c)  15m/s   . d)  125 m/s   . e)  250 m/s

36. ## Econ

Please help me and review my answers for my quiz. Let me know which ones you believe to be right and wrong. 1. When P = AR = MR = AC = MC: X economic profits are positive. economic profits are zero. economic profits are negative. normal profits are zero.

37. ## Economics

The Southern Tree Trimming Corporation reported an accounting profit of \$35,000 and a normal rate of return of 15 percent on capital and enterprise of \$30,000. The opportunity cost of labor is \$15,500. What is the economic profit? \$110,500 X \$19,500

38. ## physics

A spinal spring,loaded with a piece of metal,extends by 10.5cm in air.When the metal is fully submerged in water,the spring extends by 6.8cm.Calculate the relative density of the metal using Hooke's law

39. ## Math

(4x^2 - 2x-1) - (-3x^3 + 2)

40. ## Math

Many has two boxes one contains 10 colored pencils 4 of witch are red and 6 which are green the other box onther box contains 7 markers and which 4 are red and 3 are blue what's the probability of of many choosing green green pencil and red marker

41. ## Biomechanics/Physics

A 125 pound female is late for her biomechanics final and after arriving dashes up 40 steps each 15cm high in 1.65 seconds to take a seat and start the test. Hint: 1 lb = 4.47N How much work did she perform running up the steps?

42. ## Government

What are the three methods special interests groups might use to win favorable votes form legislators ?

43. ## math

Let a be -1/6 and let b be 1/2. Let x be the sum of the reciprocals of a and b, let y be the product of the reciprocals of a and b, and let z be twice the reciprocal of a divided by the reciprocal of b. Calculate x+y+z.

44. ## math

I took a test today that had 50 questions I needed 70 percent to pass I missed 10 questions what is my percent?

45. ## History

what was the Rhode Island connection with the cotton gin?

46. ## Pre-Calculus

An investor has \$100,000 to invest in three types of bonds: short-term, intermediate-term, and long-term.How much should she invest in each type to satisfy the given conditions? Short-term bonds pay 4% annually, intermediate-term bonds pay 5%, and

47. ## Can you check an answer for me?

There is a jar with 16 marbles. 4 are red, 7 are blue, and 5 are green. You select two marble at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability of selecting a red marble and then another red marble? a.

If no digit may be used more than once, how many 2-digit numbers can be formed using only the digits 5, 6, 3, and 2? 11 12 10 2

49. ## History

3.)Which of the following are possible results of the Monroe Doctrine? A.)Native Americans are forced off their lands in the West. B.)More Americans move westward seeking gold and riches. C.)The U.S. stops a Spanish ship from entering Florida waters.

50. ## Physics

An airplane has a velocity of 580 km/h relative to the moving air. At the same time, a wind blows northward with a speed of 92 km/h relative to earth. The airplane is moving in an easterly direction relative to earth. Find the speed of the airplane to

51. ## Math

My math problem says seven tenths exceeds seven thousandths by what number. Do I subtract like this: 0.007 - 0.7

52. ## MATH

In a drawer Richard has 5 pairs of gloves. Each pair has a different color. On Day 1 Richard selects two individual gloves at random from the 10 gloves in the drawer. On Day 2 Richard selects 2 of the remaining 8 gloves at random and on Day 3 two of the

53. ## Theory of interest

An annuity last for 12 calendar years.At the end of each quarter,there is a payment.First quarter payment are \$200,second quarter payments are \$300,third quarter payments are \$150 and fourth quarter payments are \$400.Find the accumulated value of this

54. ## Theory of interest

An annuit last for 12 calendar years.Atthe end of each quarter,there isa payment.First quarter paynments are \$200,second quarter payments are \$300,third quarter payments are \$150 and fourth quarter payments ate \$400.Find the accumulated value of this

55. ## Theory of interest

An annuity last for 12 calendar years.At the end of each quarter,there is a payment.First quarter payments are \$200,second quarter payments are \$300,third quarter payments are\$150 and fourth quarter payments are \$400.Find the accumulated value of this

56. ## chemistry

a solution is known to contain Cl, NO3, NO2, and SO4 ions. which of these ions can be positively identified?

57. ## chemistry

why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid soulution?

58. ## Maths

In an exam a student scored 60 marks out of a possible 80. What percentage is this

59. ## Principles of Finance

Warmack Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for \$490,000 is estimated to result in \$200,000 in annual pretax cost savings. The press falls in the MACRS five-year class, and it

60. ## Principles of Finance

Romo Enterprises needs someone to supply it with 121,000 cartons of machine screws per year to support its manufacturing needs over the next five years, and you’ve decided to bid on the contract. It will cost you \$880,000 to install the equipment

61. ## Principles of Finance

A five-year project has an initial fixed asset investment of \$335,000, an initial NWC investment of \$35,000, and an annual OCF of −\$34,000. The fixed asset is fully depreciated over the life of the project and has no salvage value. If the required return

62. ## Chemistry

How many nanoliters of a 1.00 molar solution would be required to react with 5.00 grams of barium nitrate?

63. ## Algebra 2

Did I perform this operation correctly? (a^2-b^2)/(a^2-2*a*b+b^2) /(2*a^2+5*a*b+3*b^2)/(2*a+3*b) = 1/a-b

64. ## Physics

What effect does the normal force have on the coefficients of friction?

65. ## Physics

A storage battery has an emf of 6.3 volts and an internal resistance of 0.01 ohm. it is to be charged for 120 amperes.hours from a 30 volt emf source having a resistance of 0.08 ohm at the rate of 20 amperes. a. compute for the resistance needed b. what is

66. ## chemistry

Le Chatelier's principle lab

67. ## chemistry

What assumption did you make about the reaction of KMnO4 solution in those determinations where temp didn't change to allow k to be a constant?

68. ## Ebhs,maths,siswati,english and business studies

I am frank,i have 4 credits with me namely,maths,siswati,business studies and english,am asking what courses i can take

69. ## Life orientation

Can you please help with this question which says'descrie a recent service delivery protest in your community or in the neibourhood.what are the problem that the community faced?.under the following topic:campaign with responsibility

70. ## math

At Frugal Foods a loaf of bread cost about \$1 in 1980. In 2013, the loaf of bread cost \$2.50. 1.A ratio is a comparison of two amounts by division. What is the ratio of the cost of a loaf of bread in 2013 to the cost in 1980? 2.50/1 2. Assuming the price

71. ## chemistry

A particular brand of toothpaste claims to contain 0.24 wt% sodium fluoride. What mass in grams of fluoride ion would be present in the average amount of toothpaste used to brush one's teeth, about two grams? Now this is a weight percent concentration

72. ## chemistry

As a research chimst, you are intrested in studying the extent and type of interactions in aqueous salt solution. As part of this study, you weight three samples of NaCl and dissolve each in 1.000kg H2O. You then measure the freezing temp. of each solution

73. ## Calc

A stone is thrown straight up from the edge of a roof, 625 feet above the ground, at a speed of 20 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 2 seconds later?

74. ## math

write an addition equation the equation must have a 1 a 2 a 3 digit added and use all of these digits 662-228-8000

75. ## math/physics

A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp,

76. ## Geometry

Write the equation of a circle given the following: Diameter measures 15 units and the center is at the intersection of y =x + 7 and y= 2x-5

2x^2=-8x+10 I got x=-2-1i x=-2+1i But every time I plug the numbers back into the equation I am not getting the sides to equal. Not sure how to use the imaginary i.

78. ## solution making/ chemistry/biotech

You have 750ml's of a solution that was originally made up using a 20X stock. How much stock was used? I think the answer is 37.5 by dividing 750/20 but I am not sure

79. ## Solution Making

Suppose you start with a 5X solution A, and you want a final volume of 10ul of 1X solution. How much Solution A do you need? Can you please check my work not sure. I need 2 ul of solution A to 8 ul of H2O. 5/1=.2*10=2

80. ## COMM/215

I would like to know if i have used the correct grammar and punctuation in the following two sentences: 47. "Have you ever read the story, 'The Tell-Tale Heart' by Edgar Allen Poe?" Dave asked. 48. "Did the professor say, 'Put down your pencils'?" Janice

81. ## COMM/215

I would like to know if i have used properly structured sentences for the following: 49. To succeed in the new economy, workers will have to learn throughout their careers adapt to changing circumstances, and self-motivate when needed. 50. Some students

82. ## AP Calc

find f(x), if f'(x)=2x-3 and the graph of y=f(x) contains the point (2,5).

83. ## algebra

the lenght of a rectangular is 50 feet more than the width,it the perimeter of the basketball court is 300 feet,what is the lenght of the field

84. ## Intro to computers

You have set up Remote Desktop for the company server running Server 2008 so that your users can RDP in from their XP workstations. Users are calling you saying that they are being denied the ability to remote in. What is the most likely reason? A. XP does

85. ## Physics

An object is placed 4 cm in front of a concave lens of focal length 3 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.

86. ## Physics

An object is placed 4 cm in front of a convex lens of focal length 3 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.

87. ## Physics

An object is placed 11 cm in front of a convex mirror of focal length 4 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.

88. ## Physics

What is the frequency of a sound wave in air at 20°C that has a wavelength of 0.4 m?

89. ## Physics

A cubical object of sides 5 cm is immersed completely in water. What is the force of buoyancy on the object? (Assume g = 10 m/s2)

90. ## physics

Two point charges, each 6*10-5 C, are separated by 30 cm. What is the electrostatic force produced by this arrangement?

91. ## Physics

A 30 ohm resistor is connected to a 1.5 V battery. How much power is dissipated by the resistor? I'm confused of the formula to use here.

92. ## Physics

A 4 ohm resistor and 10 ohm resistor are connected in series. If this circuit is connected to a 12 V battery, how much current will flow through the circuit?

93. ## Physics

A 10 ohm resistor and a 20 ohm resistor are connected in parallel. What is the equivalent resistance of this setup? What formula do I use for this?

94. ## Physics

Aluminum has a resistivity of 2.7*10-8 Ùm. What would be the resistance of 100 m of aluminum wire with a cross-sectional area of 2*10-4 m2?

95. ## Physics

How can you demonstrate that water is denser than ice without weighing them? What is the principle involved?

96. ## chemistry

EDTA: 292.2 1. How would you make 250ml's of a 15% EDTA solution 2.How much of solution 1(above)should be used to make 500ml's of a .1% EDTA solution.

97. ## Physics

A ball is thrown horizontally from the top of a building 45.9 m high. The ball strikes the ground at a point 121 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the

98. ## physics

A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 22.7 m/s. At the same time, it has a horizontal velocity of 58.9 m/s. At what speed does the vehicle move along its descent path? Answer in units of m/s At what

The polynomial function defined by f(x) = 1 − x + x^2 − x^3 + ... + x^16 − x^17 may be written in the form f(y) = a_0 + a_1 y + a_2 y^2 + ... + a_16 y^16 + a_17 y^17, where y = x + 1 and a_i s are constants. Find a_2.