# ron

Popular questions and responses by ron
1. ## NEED HELP ELECTRONICS

2. Two electronics technicians are looking at the technical manual for a piece of electronic equipment. The manual refers to a particular resistor as a “2.2 megohm resistor.” Technician A says that this means that the resistance value of the resistor

2. ## chemistry buffers

What molar ratio of HPO4 2- to H2PO4 - in solution would produce a pH of 7.0? Phosphoric acid (H3PO4), a triprotonic acid, has pKa values: 2.14, 6.86, and 12.4. Only one of the pKa values is relevant here. how do i know which pka value to use.. please

3. ## Algebra

A rectangular field is four times as long as it is wide. If the perimeter of the field is 400 yards, what are the fields dimensions? The width of the rectangular field is ____ yards.

4. ## Physics

Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 4.43 m/s, while Jane takes off in a direction 60.2o north of east at 5.07 m/s. How long is it before they are 24.7 m apart?

5. ## Physics Help..

A small cube (m=0.290 kg) is at a height of 261 cm up a frictionless track which has a loop of radius, R = 28.71 cm at the bottom. The cube starts from rest and slides freely down the ramp and around the loop. Find the speed of the block when it is at the

6. ## Physics(quick Check)

i am not sure if i am correct. A 650-N force acts in a northwesterly direction. A second 650-N force must be exerted in what direction so that the resultant of the two forces points westward? A: southeasterly It is from the southeasterly direction rite

7. ## Physics

A v vs t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t=5s the acceleration of the ball is zero. We know that at t=5s, a) the curve is not crossing the time axis b) the velocity of the ball is not changing c) the

8. ## math

A 13 feet ladder is placed 5 feet away from a wall. What is the distance from the ground straight up to the top of the ladder?

9. ## english

When you write in second person, you’re acting the part of a/an A. critic. B. observer. C. participant. D. advocate.

10. ## pre calculus

A state makes auto license plates that have two letters (excluding I, 0, and Q) followed by four digits of which the first digit is not zero. How many different license plates are possible?

11. ## ab calculus

Air is being blown into a spherical balloon at the rate of 75 cm3/s. Determine the rate at which the radius of the balloon is increasing when the radius is 28 cm.

12. ## Algebra

Suppose a box is to be constructed from a square piece of material of side length x by cutting out a 3-inch square from each corner and turning up the sides. Express the volume of the box as a polynomial in the variable x

13. ## chemistry

You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the smallest number of moles?

14. ## english

which of the following is an example of an adverbial clause fragment? 1.Wherever there is a chance for a fabulous meal,2. who described the book as a compelling masterpiece or 3.that the poet choose words carefuly to convey a particular tone. I think it is

Question: Balance the following reactions by the oxidation number method. a) I2 + HNO3 --> HIO3 + NO2 + H2O so i have N +5 to +4 net charge = -1 I 0 to +5 net charge = +5 i add coefficient where the oxidation number is changing. in this case I2 + 4HNO3 -->

16. ## chemistry 2

A saturated solution of Mg(OH)2 has a pH of 10.52. What is the Hydronium concentration? Whats the hydroxide concentration? Is this solution acidic,or basic?

17. ## Math

When you divide a whole number by a fraction with a numerator of 1 explain how you can find the quotient?

18. ## chemistry

Hi, Does anybody know any good websites that can teach me step-by-step basic chemistry (through power points) to AP chemistry? I would greatly appreciate it! Since this is not my area of expertise, I searched Google under the key words "AP chemistry

19. ## Science

How much work is done to lift 5kg box to a vertical height of1.5m

20. ## Chemistry

A gas weighing 23.6 g occupies a 10.0 L flask at 27 C and 780. torr of pressure. Calculate the molar mass of the gas.

21. ## math

if john spent \$130 and matt spent \$480, john will have three times as much money left as matt. how much money did each boy start with ?

22. ## statistics

in a sample of 1000 people ,113 are left handed.the results of the sample are shown in the table.find the probability that a randomly selected person is a left handed,given that she is a woman.

23. ## math

a) What is the area of the tri-angle determined by the lines y= − 1/ 2x + 5,y =6x and they-axis? (b) If b > 0 and m < 0, then the line y = mx +b cuts off a triangle from the first quadrant. Express the area of that tri-angle in terms ofm andb. (c) The

24. ## Physics

Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of

25. ## Physics

The artificial sweetener NutraSweet is a chemical called aspartame (C14H18N2O5). (a) What is its molecular mass (in atomic mass units)? u (b) What is the mass (in kg) of an aspartame molecule? kg I know I have to get the totally mass of the aspartame, but

26. ## Bio

The _______ - subunit of most heterotrimeric G-proteins binds the guanine nucleotides and acts as a _________. a. beta, ATPase b. gamma, GTPase c. alpha, ATPase d. gamma ATPase c. alpha, GTPase I think the right answer is "E" but not sure please help E is

27. ## Trig

The Leaning Tower of Pisa is 55m tall. The tope edge of the tower is 5m out from the bottom edge. What is the angle created between the ground and the tower? Round your answer to the nearest degree. tan -1 (55/5) = 85 degrees but my Brother says I did it

28. ## Physics

A bullet (m = 0.0250 kg) is fired with a speed of 92.00 m/s and hits a block (M = 2.50 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises. Find the angle (in degrees) through which the block rises, if

29. ## Math

Sue has 8 yards of twine she cuts the twine into equal pieces of 3/4 feet each how many pieces can he cut?

30. ## chemistry-rate of reaction

The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 3.591×10−3 M−1s−1. What is the initial rate of reaction in a reactor

31. ## communications

2.Which of the following is NOT a technique for emphasizing material in a résumé? A. Presenting it in vertical lists B. Including it as part of a lengthy paragraph C. Offsetting it with white space D. Positioning it at the top of a page 1.) I think it's

32. ## statistics

The average teenager spends 7.5 hours per week playing computer and video games. In a random sample of 110 teenagers, what is the probability that their mean time for playing games is more than 8 hours per week?

33. ## chemistry

Nitrous acid, HNO2, has a Ka of 7.1 x 10^-4. what are [H3O+], [NO2-], and [OH-] in .920 M HNO2?

34. ## chemistry

Does anybody know any websites that there are chemistry labs that could possibly be used in a CSI investigation? I can’t find anything. http://antoine.frostburg.edu/chem/senese/101/organic/faq/amino-acid-test.shtml

35. ## Science

A boat moving at 8.9 km/hr relative to the water is crossing a river 4.6 km wide in which the current is flowing at 2.4 km/hr. At what angle upstream should the boat head to reach a point on the other shore directly opposite the starting point?

36. ## allied school

glady swan slipped from a sidewalk curb and twisted her right ankle. because of the severe pain cpt codes icd 9 codes icd codes

37. ## Math

Justin had 5 packages with 8 bottles of water in each package. He drank some of the bottles before the trip. During the trip, he drank 5 bottles a day. He drank all of the bottles before he went home. How many bottles of water did Justin drink before the

38. ## Spanish II

Fill in the blank with the correct conjugation of the verb in parentheses. ¿Cuándo (regresar) mi tía de México? A)regresamos B)regresan C)regreso D)regresa (There are more, help needed before Friday please.)

39. ## Calculus

A wire of length 12 meter is cut into two parts; one part is bent to form a square, and the other is bent to form an equilateral triangle. Where the cut cut should be made if a) the sum of the two areas is to be a maximum? b) the sum of the two areas is be

40. ## economics

A speculator sells a stock short for \$50 a share. The company pays a \$2 annual cash dividend. After a year has passed the seller cover a short position of \$42. What is the percentage return on the position (excluding the impact of any interest expense and

41. ## Math

Express 2.4 as a fraction in its simplest form

42. ## Algebra

Leila purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Leila used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?

43. ## Math

Name the vertices of a square whose angles are f,g,a,l

44. ## Economics

Opera CD buyers are located in New York and Los Angeles. At the current price for a CD, \$25 in both New York and Los Angeles, aggregate demand for Opera CD is 10,000 units (i.e. the sum of the demand in New York and Los Angeles); and the price elasticity

45. ## DrBob222 : need help with the problem

An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa

46. ## chem

Pka=pH when[HA]=[A- ]. What is [A-]/[HA] WHEN PH=PKA+1 AND WHEN pH=pka-1

48. ## Algebra

Please let me know if i answered these correctly thanks 1.Which property of the real numbers is illustrated by the following statement? 4(3x) = (4 ∙ 3)x answer: distributive property 2. Which property of the real numbers is illustrated by the following

49. ## math

A rectangular dog pen is to be sectioned off into two separate areas and made to enclose area of 225 feet. Find the dimensions of the pen that will require the least amount of fencing material.

50. ## Latin

How do u change a cardinal number in to ordinal number.

51. ## accounting

Why might an analyst incorporate the industry-market-size factor and the interrelationships among the growth, price-recovery, and productivity components into a strategic analysis of operating income?

52. ## accounting

Why might an analyst incorporate the industry-market-size factor and the interrelationships among the growth, price-recovery, and productivity components into a strategic analysis of operating income?

53. ## Math

What is the property type of (2x100)+[(1x100)+(3x10)]+(5x10)

54. ## algebra

one canned juice drink is 15% orange juice; another is 5% orange juice. how many liters of each should be mixed together in order to get 10 liters that is 10% juice? how many liters of 15%? how many liters of 5%?

55. ## Geometry

In a right prism whose bases are regular hexagons what is the measure of the dihedral angle between adjacent lateral faces?

Explain why the top of a commercial 1.5 V dry cell battery is always marked with a plus sign.

57. ## english

I have to write a paper on a detail dealing with a problem in a medical supply office. 10 years ago Liz Jakowski promote me to office manager. I manage two employees: jack snyder and ruth disselkoen. My office provide office support for members of the

58. ## science

how do i reword this purpose staetment for my experiment? Lab Manual: Purpose: To measure a physiological quantity,your reaction time to both audio and visual stimulus. Rewording: To scientifically measure the test subjects reaction time in both audio and

59. ## college

in recent decades, lobbyists in washington, d.c. have increasingly

60. ## The court system

I need to write a 1400 word paper comparing the entertainment fiction of the court system with its reality. Describe the fictional portrayals of the courtroom including the trial process, the roles of the prosecution and defense, the roles of the courtroom

61. ## calculus

find all intercepts x^2-4/x-1 show work

62. ## calculus

find all x,y intercepts of x+6/x-3 show work

63. ## Albebra

c squared-4c-12=0 we have to solve each equation by completing the square.

64. ## math

Samantha’s speedometer reads in kilometers per hour. If the legal speed limit is 55 mi/h, how fast can she drive? How should I set this up? 160 kilometers per hour is 100 miles 55 miles is 88 kilometers. Here in New Zealand we are in kilometers

65. ## science

what is freezing and boiling point of sugar. Several sources on the Internet list the melting point as 160-186 with decomposition. The Merck Index lists "dec. 160-186. Chars and emits characteristic odor of caramel." Since it decomposes at 186, the boiling

66. ## English

Yes, A rasin in the sun by Lorraine Hansberry OK what is your question? Are you looking for a theme? do you have any questions that need to be answered, cuz I have a whole list of them for every act First off thank you for helping me! This the? What are

67. ## math

For a wedding, Shereda bought several dozen roses and several dozen carnations. The roses cost \$15 per dozen, and the carnations cost \$8 per dozen. Shereda bought a total of 17 dozen flowers and paid a total of \$192. How many roses did she buy? A 6 dozen B

68. ## percentages

Hi I want to know what one amount is a percentage of another example what is 0.74 and a percentage of 4.91 thanks What is the percentage of .74 of 4.01? percent= .74/4.02 * 100 Thank You !!!!!!

69. ## Math

How calculate 130 to the nearest metre?

70. ## social studies

which reigion was home to the sioux

1/2 - 1/64 =

72. ## math

2 4 6 8 -1 2 4 3 4 -4 0 0 -2 1 0 0 0 0 0 0 piviot the system about the element in row 2 colum 1 enter the augmented matrix with the cell in their original position

73. ## Math

What is 7x+3=77

74. ## math

If you have a square blanket and it's 130 square inches. How long is one side in furlongs?

75. ## philosophy

Determine if these arguments are strong, weak or failed 1. Pierre is French. Therefore, he is European. Answer:weak

76. ## Chemistry

What will burning of .3 liters of C2H2 produce?

77. ## math

If the average of 4 numbers is 12, what is the sum of the 4 numbers?

78. ## math

calvin has 90 stamps. for every mexican stamp, calvin has 8 U.S. stamps. How many mexican stamps does Calvin have?

79. ## Calculus

find the extremum of f(x,y) subject to the given constraint, and state wether it is a maximum or minimum. 4y^2-29x^2; 3x+y=21

80. ## history

In the context of criminal punishment, desert refers to:

81. ## physics

Four point masses, each of mass 2.0 \$kg\$ are placed at the corners of a square of side 1.4 \$m\$. Find the moment of inertia of this system about an axis that is perpendicular to the plane of the square and passes through one of the masses. The system is set

82. ## physics

A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration. After 18.0 s, the wheels have made 190 rev. What is the angular acceleration of the wheels? What is the angular velocity of the wheels after 18.0

83. ## Chemistry

Zn (0.85M) + Cu (1.10M) in an electrochemical cell. what is the conc of the zinc ion?

84. ## consumer math

The Jones hope to accumulate \$12000 for a sunroom over the next 6 yrs. How much would they need to invest right now at 3.9% compounded quarterly to reach goal? Please help

85. ## Physics

The exact mass of the moon was not determined until the Apollo lunar orbiter went into orbit around the moon. They used the period and the orbital radius to find the mass. But since you already know the mass of the moon, if the spaceship was orbiting 485

86. ## Multiplication of fractions

60 people can receive a single slice of pizza,how many people can receive a single slice of pizza if 7 pizzas are purchased?

87. ## Physics

A city planner is working on the redesign of a hilly portion of the road. An important consideration is how steep the road can be so that even a low-powered car can get up the hill without slowing down. A particular small car with a mass of 1368 kg can

88. ## Math

From -40 take -55, the answer I came to is 15, is this correct?

89. ## Math

Need help please. 183 1/3% of 4800

90. ## Physics

A 25.2 kg block of wood is pulled across a floor at a constant 9.74 m/s with a constant 62.7 N force. The bottom of the box has a surface area of 65.1 cm2. If the block was put on its side (which has twice the surface area of the bottom) and pulled with

91. ## Research

The Average Score in the entrance examination in MSHS is 80 with a standard deviation of 40 students was taken from this year’s examinees and it was found to have a mean score of 84. Is there a significant difference between the known mean and the sample

92. ## Science

An airplane is traveling 725 m/s at 48.8° degrees north of west when a wind starts to blow. The velocity of the wind is 106.7 m/s and it is blowing 21.8° east of north. What is the speed of the airplane relative to the ground?

93. ## Precalc

1) Janet is offered a job with a starting salary of \$15,000, and a guaranteed annual increase of \$600. If she takes the job, what will be her guaranteed salary for the 10th year? What would her total earnings be for the first 10 years? Answer: \$21,000 ; \$

94. ## Math

Carol can run 4.2 Miles's in 14 minutes, what is her speed per minute.

95. ## Math

There are 64 students. 80% scored a 75 on a final test. How many students scored a 75?

96. ## Geometry

we have line QR parallel= to line ST, PQ = 8, QS = , and PT = 12. Find PR.

97. ## Physics

The crankshaft of an engine increases its spin from 1,200 rpm to 1,500 rpm in 0.50 s. What is its angular acceleration

98. ## MATH

10 5/12 ÷ 1/10 =

99. ## PSY/240 Hunger, Eating,

I am confused, please explain what are set points and what are settling points in relation to weight control?