# Questions Asked onMarch 1, 2008

1. ## PHYSICS

Fig. 6-48 shows a conical pendulum, in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.038 kg, the string has length L =

2. ## physics again it didnt work.

A moving 1.60 kg block collides with a horizontal spring whose spring constant is 295 N/m. The block compresses the spring a maximum distance of 3.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal

3. ## math

A patient has been instructed to take 15ml of alumina and magnesium oral suspension every other hour for four doses daily. How many days will two 12 oz bottles last?

4. ## math

Write the number in expanded form. 684

5. ## Algebra II

Write a quadratic equation with -3/4 and 4 as its roots. Write the equation in form ax^2+bx+c=0, where a,b,and c are integers. (x-p)(x-q)=0 (x--3/4)(x-4)=0 (x+3/4)(x-4)=0 x^2-3x+3=0(answer)

6. ## math

How many capsules, each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 pounds?

7. ## math

A GOOGOL IS THE NUMBER 1 FOLLOWED BY 100 ZEROS . a) WHAT IS A GOOGL WRITTEN AS A POWER ? b) WHAT IS A GOOGOL TIMES A GOOGOL WRITTEN AS A POWER ?

8. ## math

Write 0.21 as a percent. A) 0.21% B) 2.1% C) 210% D) 21% is the answer D

9. ## calculus

what is the integral of x^2-x+6/x^3-3x? the process involves partial fractions, and the answer is supposed to include ln and arctan... i just don't know how to get there.

consider two successful small businesses.Outline what it is about the way tey satisfy their customers'wats and needs to makes them successful.

11. ## organic chemistry

What will be the effect of adding solid NaHCO3 to hot concentrated H2SO4? Why should the reaction vessel containing a synthesized ester be cooled first before neutralization? My Guess #1: Since neutralization is an exothermic process and the ester is in

12. ## algebra

You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1.Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on

13. ## Chemistry

Which substance will be attracted to a charged balloon NH3 or CH4? Why?

14. ## Economics

A firm with monoply power has the demand curve: P = 100 - 3Q + 4A^1/2 And has the total cost function: C = 4Q^2 + 10Q + A where A is the level of advertising expenditures. P is price, Q is output. How do I find the values of A, Q, and P that maximize the

15. ## Physics

A pilot must fly his plane to a town which is 200 km from his starting point in a direction 30 degrees N of E. He must make the trip in 1/2 hr. An 80km/h wind blows in a direction 30 degrees E of S. Find the speed of the plane relative to the ground, the

16. ## MATH

For the decimal 8.62354: What is the place value of 5? IS IT TEN-THOUSANDTHS Hundredths Thousandths Ten-thousandths Hundred-thousandths

17. ## math

USING THE MANUFACTURING TERMS BELOW , TELL HOW MANY DOZEN IN A GREAT GROSS. HOW MANY GROSS ARE IN A GREAT GROSS ? --------------------------- 1 DOZEN = 12^1 ITEMS 1 GROSS = 12^2 ITEMS 1 GREAT GROSS = 12^3 ITEMS

18. ## MATHS

WHAT DOES THEORETICAL PROBABILITY MEAN HOW DO I WORK IT OUT?

19. ## 8th math

What are the odds of having a coin land tails up on 4our consecutive tosses of the coin. I took (1/2)^4 and got 1/16 but my teacher counted it wrong is 1/16th right?

20. ## Chemistry

Determine the cell potential (in V) for a platinum electrode in an acidic solution of 0.004M H+(aq), 3.226M ClO4-(aq) and 4.445M ClO3- (aq) ions, coupled to a gold electrode in 3.238 M Au3+ (aq) at 307.10 K. Im confused about the mulitple molarities given

21. ## math

whats the integral of e^(3sqrt(x))? i think i'm supposed to use substitution but i don't know what to substirute, i tried u= x^(1/3) but it didn't work out, please help!

22. ## Science

Compare and contrast how different electrolytes-sodium, potassium, and chloride function in the body. Why is water essential to health maintenance? What are the functions of water in the body? What happens to the body when it does not get the water it

23. ## Biology

Beetles: Why is the direction that the antennae of beetles point in, significant? Thanks!

24. ## Physics

A musician plays the middle C note (262 Hz) on a guitar, a piano, and a violin at the same loudness. Will all three instruments produce exactly the same sound? Why or why not explain. Frequency (262Hz) is the same so that means that the pitch of the sound

25. ## Physics

Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain. Tension, mass density and the length of our vocal cords differ so would that be the reason why they sound different? For instance: a child's voice is usually

26. ## Algebra II

Write 36x^2-360x-25y^2-100y=100 in standard form. Then state whether the graphs of the equation is a parabola, circle, ellipse, or hyperbola. I started with: 36(x^2 -10x+25)-25(y^2+4y+4)=100+36(25)-25(4) which leads to: 36(x^2-10x+25)/900 -

27. ## Algebra II

Write an equation for the ellipse with end points of the major axis at (7,1) and (-7,1) and end points of the minor axis at (0,5) and (0,-3). I do not know how to start this. There are no examples in my book that I can study. Could you show me how to set

28. ## Physical science

What formula's should I use to solve these problems? A 1.04x10^3 kg car accelerates uniformly from rest to 12 m/s in 2.16 seconds. a) What is the work done on the car in this time interval? Answer in Joules. b) What is the power delivered by the engine in

29. ## Slope

Find the slope of a line that is perpendicular to a line whose slope is (1) 0 (2) has no slope. TIA

30. ## Algebra II

Simplify: 4xy^3/z^2 divided by (8x^2y/z^3)^2 I came up with the following: 2.2.x.y.y.y.z.z.z.z.z/z.z.z2.2.16.x.x.x.x.y.y Simplified into x^3y/16x^3. Is this correct? Thanks for your help earlier and now.

31. ## Physical science question 2

I am definitely lost on this problem. Can someone help me out? A(n) 51.3 kg astronaut becomes separated from the shuttle, while on a spacewalk. She finds herself 50.3 m away from the shuttle and moving with zero speed relative to the shuttle. She has a(n)

32. ## science/elements

i know that the mass of barium is 137.33 but i have to make a presentation to my class and i don't know how i would say the mass of it? 137.33 ____ whats it measured in?

33. ## Algebra II

Solve 2x^2=3x+2 by graphing. If excat roots cannot be found, state the consecutive integers between which the roots are located. I don't have an answer but I made a table and plugged in these values for x respectfully: -1/4, -2/4, -3/4, -1, 0 Thats all I

34. ## Algebra II

Solve x^2-2x=24 by factoring. x^2-2x=24 x^2-2x-24=0 (x-2)^2 (x+6)=0 x=2 or x=-6 [-6,2](answer)

35. ## math

A "super ball" dropped from a height of x feet bounces to a height y that is 80% of x. Can anyone please teach me how to find its numerical, algebraic, and graphical representations? Thanks a lot!!!

36. ## math

An antibiotic is reconstituted with 128ml of water to yield 250mg/5ml. A) If the child weighs 66 pounds what will the dose be at 5mg/kg/dose? B) If the medication is given qid x 10 days, will the 150ml bottle be enough?

37. ## Algebra II

Find the exact solutions to 6x^2+x+4=0 by using the quadratic formula. x=-b+-sqrtb^2-4ac/2a -1+-sqrt1^2-4(6)(4)/2(6) -1+-sqrt-95/12 -1-95/12 -96/12 x= -8 -1+95/12 94/12= 7.8333.. [-8, 7.83](answer)

38. ## algebra

^5 squareroot of x^20 *my answer x^4 ^3 squareroot of 729/343 my answer: couldn't figure it out use rational exponents to write ^3 squareroot of x * ^5 squareroot of 4x my answer: ^15 squareroot 4x^8

39. ## Physics

A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the block is at the distance of .1m from equilibrium. Assume no friction between the block and the table. Force is 8.67N. Also mass

40. ## algebra

^440 squareroot (a+b)^440 my answer: |a+b| add. squareroot 7a + 4 squareroot 28a^3 ?

41. ## Chemistr repost

Determine the cell potential (in V) for a platinum electrode in an acidic solution of 0.004M H+(aq), 3.226M ClO4-(aq) and 4.445M ClO3- (aq) ions, coupled to a gold electrode in 3.238 M Au3+ (aq) at 307.10 K. Im confused about the mulitple molarities given

42. ## Math

I have no idea how you would do this problem: Express this expression as a rational number in lowest terms. (1000!-999!-998!)/(1000!+999!+998!)

43. ## science

how is science related to quartz watches?

44. ## Probability

Two fair coins are flipped simultaneously. This is done repeatedly until at least one of the coins comes up heads, at which point the process stops. What is the probability that both coins come up heads? I think it would be 1/2 but the answer is 1/3 and I

45. ## science

what types of scienists are involved in quatz watches?

46. ## Science

How do scientists contribute to quartz watches?

47. ## pre-cal

A "super ball" dropped from a height of x feet bounces to a height y that is 80% of x. Can anyone please teach me how to find its numerical, algebraic, and graphical representations? Thanks a lot!!!

48. ## science

how is science related to hamburgers?

49. ## physical science 2

in the troposphere, air temperature usually decreses with height by 6.5 c per kilometer. if the air temperature near the ground is 20 c what would you expect the temperature at the tropopause to be, assuming a tropopause height of 12km?

50. ## Physical Science

After a car is driven for some distance, why does the air pressure in the tires increase?

52. ## Physical Science

In your room are things such as tables, chairs and other people. Which of these things has a temperature lower than air? Greater than air? And equal to the temperature of air?

53. ## sam

what types of scientists are involved in penicillin?

54. ## science

How do scientist contribute penicillin?

55. ## science

How is science related to penicillin?

56. ## cook

a food recipe using stemming?

57. ## science

plz answer whar are quantitative properties? Which states of matter are considered fluids? list 4 properties of fluids? thankz alot

58. ## Math

Beginning with a tank containing 8075 gallons of gasoline, more gas is added at a rate of 5 gallons per minute, while alcohol is added at a rate of 10 gallons per minute. When the mixture is 10% alcohol, how many gallons of the mixture are in the tank? Is

59. ## binary system

how does the binary system work?

60. ## Elementary Mathematics

How can a child who has not yet developed base-ten concepts understands quantities as large as, say, 85? Contrast this with a child who understands these same quantities in terms of base-ten groupings.

61. ## Elementary Mathematics 2

Counting by ones, counting by tens, and counting by groups and singles: I was rather curious about how these methods of counting can be used to coordinate concepts and oral and written names for numbers.

62. ## organic chemistry

why is it necessary to protonate the carboxylic acid in an acid-catalyzed esterification? What is its purpose?

63. ## french

translate this Le bonheur ici bas n'a pas de prix Am I right in saying"happiness here doesn't have a price". If not, what is the translation and two, what does "bas" mean in this context?

64. ## Science

What is the differnce of the dispersal of the seeds of the tomato and the spores of the mushroom?

65. ## Geography

I've been searching all over the web for this, but cannot find specific details. How did the former Soviet Union encourage its expansive population policy? Thanks in advance.

66. ## Health insurance

Please check my answer thanks for your help :) Hospital that are excluded from the Medicare acute care PPS such as children hospitals are paid based on A reasonable cost B fee schedules C global payments C bundled payments My answer is # A

67. ## Chemistry

Redox Reactions Can anyone help predict the reaction that will take place when Gold is put into a solution of Hydrochloric Acid?

68. ## Health insurance

Please check my answer thanks for the help :) If an enrollee uses more services than originally assumed per the PPPM calculation then what would the paln do? A. show a profit for that period B. show a loss for that period C need a contract renegotiation D.

70. ## ICD-9-CM codes health care

please check my answer thanks for the help :) Verifying the accuracy of ICD-9-CM and HCPCS codes are an important function in what ? My answer is maintence of the OASIS data set

71. ## Algebra II (check)

Assume that no denominator equals 0. sqrt12 - sqrt18 + 3sqrt50 + sqrt75 = (sqrt2^2*3) - (sqrt2*3^2) + (3sqrt2*5^2) + (sqrt3*5^2) = (sqrt2^2*sqrt3) - (sqrt3^2*sqrt2) + (3sqrt5^2*sqrt2) + (sqrt5^2*sqrt3) = (2*sqrt3) - (3*sqrt2) + (3sqrt5*sqrt2) + (5*sqrt3) =

72. ## Algebra II (check)

Assume that no denominator equals 0. 2+i/1-3i = 2+i/1-3i = (2+i/1-3i) * (1+3i/1+3i) = (2+3i^2)/(1-9i^2) = (2/1) - (1/3i) = 2-1/3i(answer)

73. ## Algebra II (check)

Use synthetic division to find (2x^3 - 5x^2 + 7x - 1). _1|2 -5 7 -1 2 -3 _____________ 2 -3 4|-1 2x^2 - 3x + 4(answer)

75. ## Algebra II (check)

Solve: sqrt3x+6 + 4 =< 7 sqrt3x+6 + 4 =< 7 subtract 4 from both sides sqrt3x+6 =< 3 subtract 6 from both sides 3x/3x =< -3x/3x x =< -1 (answer)

76. ## english

For Language Arts I have to write a two voice poem about the holocost. It has to be very serious. Everytime I give my teacher the poem she gives it back to be and says that I don't know how to start the beggining of seriously. So, how should I start the

77. ## math

Find the five-number summary of the following set of numbers. 335, 233, 185, 392, 235, 518, 281, 208, 318

78. ## sci

Would someone critique my hypothesis? question:Although most salamanders have four legs, the aquatic salamander shown below resembles an eel. It lacks hind limbs and has very tiny forelimbs. Propose a hypothesis to explain how limbless salamanders evolved

79. ## Math

Can anybody translate (y + 3)(y -2)

80. ## Physics

A boat is at a point 120km West and 60km South of its destination. It sails in water which has a current of 20km/h North. In order to arrive at the destination, the captain decides to head the boat due east at 50km/h until he reaches a point due South of

81. ## physics

A car (m = 690.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 49.0 m. Find the average power the engine must deliver to reach a speed of 24.9 m/s at the top of the hill in 15.7 s(NEGLECT frictional losses:

82. ## organic chemistry

Why is that absolute ethanol be used in preparing an ester with ethanol as one of the reactants? My Guess: It will cause hydrolysis of the ester as it is formed in the reaction vessel. Is this reasoning right? Pls. I need help about this...

83. ## Algebra II

The shape of a supporting arch can be modeled by h(x)= -0.03^2+3x, where h(x) represents the height of the arch and x represents the horizontal distance from one end of the base of the arch in meters. Find the maximum height of the arch.

84. ## Physics

I have to compare and contrast three types of tires, and relate them to physics. I've chosen: Racing tires Winter tires All season tires I've chosen to compare them on: Tire tread pattern Rubber compound ??? As you can see, I need something else to

85. ## Math

Give the place value for the indicated digit. 8 in the number 138,350 A) Ones B) Tens C) Hundreds D) Thousands

86. ## Algebra II (check)

Assume that no denominator equals 0. 5x^3(7x)^2 = 5*7*7+x^3+x^2 = 245x^5(answer)

87. ## MATH

5. For the decimal 8.62354: What is the place value of 5? A) Hundredths B) Thousandths C) Ten-thousandths D) Hundred-thousandths Is it D

88. ## Algebra II (check)

Assume that no denominator equals 0. (2x-3)^2 = 2x * 2x -3 * -3 = 4x-9(answer)

89. ## Algebra II (check)

Assume that no denominator equals 0. (8y^3+27)/(2xy-10y+3x-15) I don't know how to solve this one.

90. ## Ratios Math

Please help The following table shows the number of calories burned per hour (cal/h) for a variety of activities, where the figures are based on a 150-pound person. Bicycling 6mi/h 240 Running 10mi/h 1280 Bicycling 12mi/h 410 Swimming 25yd/min 275

91. ## Algebra II (check)

Assume that no denominator equals 0. sqrt 16x^2y^4 = sqrt (4x)y^2 = 4xy^2(answer)

92. ## Math

Can 89/13 151/11 or 223/23 be simplified? I think none of the 3 can be simplified

93. ## Math

Do the indicated addition. 3 + 4 + 8=15 right 7 12 15 17

94. ## chemistry-calibration curve

what does the calibration curve tell you about the spectrophotometer?

95. ## 8th grade astronamy- apparent magnetudes

whats the differences in magnitudes of the sun and sirius?

96. ## Trig Equation

Solve for x (exact solutions): sin x - sin 3x + sin 5x = 0 -¦Ð ¡Ü x ¡Ü 0 ------ Now, using my graphics calculator, I discovered that the following equation has 5 solutions. I have managed to come up with 3 of them but I'm having trouble finding the

97. ## Trig

Can somebody please help me find the domain of: 1 / cos4x If there are any working out, could you be kind enough to show your steps? Thankyou. All help is of course, appreciated.

98. ## math

THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ?

99. ## MATH

substract 8gal 7qt-3gal 2qt simple form is the answer 5gal 3 qt 4 gal 5 qt 6 gal 1 qt 5 gal 3 qt 5 gal 5.5 qt

100. ## math

THE DISTANCE FROM EARTH TO MOON IS ABOUT 22^4 MILES . THE DISTANCE FROM EARTH TO NEPTUNE IS ABOUT 22^7 MILES . WHICH DISTANCE IS GREATER ? ABOUT HOW MANY TIMES GREAT ?