# Questions Asked onDecember 16, 2008

1. ## Physics - Buoyant Force

A piece of metal weighs 50.0 N in air, 36.0 N in water, an 41.0 N in an unknown liquid. Find the density of the unknown liquid.

2. ## Chemistry

BrO3- + 5Br- + 6H+ 3Br2 + 3H2O If 25.0 ml of 0.200-molar BrO3- is mixed with 30.0 ml of 0.45-molar Br- solution that contains a large excess of H+, what is the amount of Br2 formed, according to the above equation? The answer is 0.00810 moles but I don't

3. ## math

what is 22 2/9% as a fraction?

4. ## physics

The mean distance of the planet Neptune from the Sun is 30.05 times the mean distance of Earth from the Sun. a.) Determine how many Earth-years it takes Neptune to orbit the Sun. b.) The mass of the Sun is 1.99 x 10^30 kg, and the closest distance of

5. ## algebra with pizzazz

What is it called when a sea bird lands on a channel marker?

6. ## physics

Assuming Earth behaves as a perfect sphere with a radius of 6380 km, the standard gravitational acceleration,g, at sea level has a value of 9.80 m/s^2. a.) As Earth rotates on its axis, objects at the equator experience a slightly different value of g due

7. ## Calculus

Find two numbers whose sum is 10 for which the sum of their squares is a minimum.

8. ## english

htt p: //w ww. collegeboard. com/prod_downloads/ap/students/ english/eng_lang_frq_01. pdf what is an example of alliteration on the third page of this document for the poem about the owls?

9. ## Chemistry

We did a flame testing lab today with the following metal ions: Sodium, Na^+1 Barium, Ba ^2+ Calcium, Ca ^2+ Copper, Cu ^2+ Potassium, K ^+1 Strontium, Sr ^2+ Lithium, Li ^+1 The question asks to explain the effect of the nitrate ion solution on the color

10. ## US History

Evaluate the extent to which the Articles of Confederation were effective in solving the problems that confronted the new nation. After the revolution, this gave the states freedom and independence. There was a comitee of delegates of representatives from

11. ## physics

The moon is receding from the Earth by approximately 3.8 cm per year. Earth's mass is 5.98 x 10^24 kg, and its radius is 6.38 x 10^6 m. The Moon's mass is 7.3 x 10^22 kg, its radius is 1.79 x 10^6 m, and its orbital period around Earth is 27.3 days. The

12. ## science

is chloringe flammable is chlorine flammable with a metal?

13. ## physics

Astonomers discover a new planet orbiting a fixed point in space, but for reasons unknown, they can't directly observe a star where one is expected. The radius of the orbit is measured to be 1.85 x 10^8 km, and the lone planet completes an orbit once every

14. ## Chemistry

A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.00 cm, and a piston is carefully placed on the surface of the compound so that, for all practicla purposes, the distance between the

15. ## math

need help in 1996, the civilian labor force of the united states included 127 million people, and 5% were unemployed. how many people in the cilvilian labor force were unemployed?

16. ## macroeconomics

1 The most important reason for the slope of the aggregate demand curve is that as the price level _______. 1) increases, interest rates decrease, and investment increases 2) decreases, interest rates decrease, and investment decreases 3) increases,

17. ## physics

The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. If the train is initially moving at a speed of 47 km/h, in how short a distance can the train be stopped at constant acceleration

18. ## math work did i do right

Interpreting Graphs and Intercepts Introduction: Graphs are created so that we can quickly derive meaningful information from them. They provide a visual representation of the data and, therefore, an understanding of the scenario. Interpreting graphs,

A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.00 cm, and a piston is carefully placed on the surface of the compound so that, for all practicla purposes, the distance between the

20. ## physics

A train moving at a constant speed of 68.0 km/h moves east for 33.0 min, then in a direction 40.0° east of due north for 30.0 min, and then west for 59.0 min. What is the average velocity of the train during this run? Magnitude km/h

21. ## art

Okay i have this art class that i love but im always having trouble making myself love my drawing and everyone says their always amazing so how do i get myself to love my mom art again?

22. ## science

I need help to find the answer to this problem: The formula for aluminum sulfate is Al2(SO4)3. Figure the molar mass of aluminum sulfate to the nearest gram?

23. ## 5th grade - Math

If the retail tax rate is 5 cents for every 1 dollar you spend, how much tax would you pay for a \$0.15 item?

24. ## Scince

The Big Idea of Energy sulphur and iron fillings

25. ## Functions

Find the sum of the 50 greatest negative integers. I'm supposed to find a, d, and t(at)n, but I'm not sure which is which. I think it makes sense for n to equal 50, but apart from that, I don't know what else to do. I would really appreciate some sort of

I have a question, if f(x)=x/2 and g(x)=3x+1 find: a) (f+g)(x) i know you go x/2+3x+1. but how do i solve that?? b) (f-g)(x) i know you go x/2-3x+1, how do i solve? c)(f*g)(x) how do i solve? (f/g)(x) how do i solve?? f(g(x)) how do i solve?? thanks for

27. ## psychology

Sara sets up an experiment with a control group and a experimental group to study how reading to preschool children may improve their first-grade reading achievement scores. In her study, the independent variable will be A first-grade reading achievement

28. ## math

There is a square whose vertices lie on a unit circle. Point P lies on the terminal arm of an angle in standard position, P(0.3420, 0.9397) how do you find the degrees of P?

29. ## Algebra

Another question: A cell phone company charges \$60 for a cell phone and \$40 per month under its economy plan. Formulate and graph a model that can be used to determine the total cost, C(t), of operating a cell phone for t months. Find the total cost for 5

30. ## math

how do i find the domain and range of equations? example: f(x)=ab.solute value of x-3. f(x)=square root 36-x^2 g(x)=-2x+2. do i find the range by pluggin in y for the x and then solving. for example: x=-2y+2, and then i get y=x-2/-2. and then is that how i

31. ## cjs200

Private security has become an important aspect in protecting businesses and properties. where do you see examples of private security? 2. how effective do you feel the private security industry is in preventing crime and protecting communities?

32. ## history

How did the advances in steel production and oil refining affect US industry History

33. ## math

A dealer offers a computer software program whose list price is \$500 at a 19% discount. She will give an extra 3% discount if paid in cash. What is the selling price if payment is made in cash? If 500=81%, _____=78% (this comes from subtracting 19% from

34. ## physics 2

A delivery truck travels 19 blocks north, 12 blocks west and 22 blocks south. What is its final displacement from the origin? Assume the blocks are equal length. Find magnitude and direction. which is counter clockwise from east is positive.

35. ## psychology

Incomparison to concordance rates for autism in dizygotic twins, monozygotic twins are blank likely to develop the same illness. A significantly less B somewhat less C significantly more D somewhat more I believe the correct answer is C

36. ## Physics

For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.) with just these, can i rearrange the equation: T (4s)= 2pi times sqrt l/g to calculate the length of the swing? I believe i have (3.98m), but

37. ## Trigonometry

Does anyone have a good website that shows the proofs for these equations? sin(u+v) = sin(u)cos(v) + sin(v)cos(u) cos(u+v) = cos(u)cos(v) + sin(v)sin(u) Thanks!

38. ## grammar

how can I write a sentences with prepersitional phrases?

39. ## writing skills

find answer 5.which of the following sentences has a compound predicate b.while he swam she collected shells c.she washed the shells and dried them in the sun d.on the way to the bank the interest rates went down

I don't quite get the formula "w=(fd)" i understand what to do once you get the data, but i can't seem to ever get the data from the six basic machines, and converting the measurement units. I really need help, please

41. ## physics

A car is driven 125 km west and then 85 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)? find magnitude in km find direction in degrees. South of west.

42. ## Social studies

how to put together a crossword puzzle for the state of Pennsylvia

43. ## chemistry desperately

i am completely lost, i confused myself. i need to find the concentration of HC2H3O2 HC2H3O2 + NaOH ==> NaC2H3O2 + HOH NaOH C= 0.3 M v= 0.25 L n= 0.075 moles M= 40.00g/mol m= 3.00 g NaC2H3O2 n= 0.075 moles m= 0.4973 g(ammount of acetic acid in solution)

44. ## math

Use the exponent rule to simplify the expression. Assume the variable represents nonzero real numbers. (m^5m)^-7/(m^-32n^8)

A \$1,000,000 face T-bill with 40 days to maturity is priced at \$985,000. Compute the discount yield and the bond equivalent yield

46. ## Math correct

AM I RIGHT?? simplify (2x^2y^2z)^2(x^4y)^5 I CAME WITH 4x^13y^9z^2 FOR THE ANSWER.. convert the number to scientifc notation 13,550,000,000 I CAME WITH 1.355x10^9 FOR THE ANSWER

47. ## science

I am having trouble with Restate the problem in terms of the following: Manipulated variable Constant (control) variables Principles of experimental design State in correct form the hypothesis you intend to demonstrate. I have conducted the experiment but

48. ## spelling

unscramble these words, the ending Sometimes us surprise with.

49. ## psychology

In both parents are carriers of PKU A one child out of four will develop the disorder B none of the children will develop the disorder C their daughters are more likely to develop the disorder than their sons are. D all of their children will develop the

50. ## psychology

Leon maintains that children have an innate and natural curiosity. If Leon is an educator who wishes to apply his ideas to teaching methods, he has primarily involved himself in the A nature-nurture controversy B active-passive controversy C

51. ## Finance

National Telephone and Telegraph (NTT) Company common stock currently sells for \$60 per share. NTT is expected to pay a \$4 dividend during the coming year, and the price of the stock is expected to increase to \$65 a year from now. Determine the expected

52. ## Math check

Write the number without exponents 8.83x10^11 88,300,000,000

53. ## precalculus

show that (-1,1), (9,4), (20,6) and (10,1) are the vertices of a rhombus and then find the area of this rhombus?

54. ## math

25 over 100 = n/100 how do i solve for n?

55. ## Calculus

Washer Method: y=x^3, y=1 ,x=2 aroud the Y axis

56. ## science

what are 5 facts on pulleys?

57. ## algebra

I'm a little confused on how to solve this: The number of cricket chirps per minute is given by N(t) = 7.2t - 32 Where t is the temperature in degrees Celsius. a. Graph the equation N(t) = 7.2t - 32 I have learned a few ways to graph equations. One way

58. ## Scince

am having trouble with Restate the problem in terms of the following: Manipulated variable Constant (control) variables Principles of experimental design State in correct form the hypothesis you intend to demonstrate. I have conducted the experiment but I

59. ## Math

convert the number to scientific notation. .0000000009

60. ## Economics

Pls advise.. The max units of good A is 180 The max units of good B is 60 In general terms, what happens to the opportunity cost of good A as the output of good A increases? In general terms, what happens to the opportunity cost of good B as the output of

61. ## Physics

Why is the momentum in a spaceship traveling in space not conserved? Can someone please explain? thanks

62. ## physics

When I toss a ball straight up, it travels up, stops, and then falls back to by hand. When it stops to change direction, how long is it stopped?

63. ## Hospitality & Tourism

what is a word or words for this scrambled letters - et eaidtaernegvosanurr

64. ## Geography

What are the four different types of monarchies?

65. ## math

multiply and write answer without exponents (3x10^6)(2x10^4) Is the answer 60,000,000 ?

66. ## Physics

the question is to write down a relationship for the potential energy of a body of mass m, when it is a distance r from the center of mass M and radius R.explain all symbols used and show that if a body is to escape the gravitational influence of the

67. ## psychology

If you were attempting to explain to Jake how a chromosome looks, you would most accurately tell him it's like a A cone B flexible rod C sphere D ladder I believe the correct answer is D

68. ## Economics

What are the principles of economics invloved in producing price floors + cielings?

69. ## Physics

For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.) with just these, can i rearrange the equation: T (4s)= 2pi times sqrt l/g to calculate the length of the swing? I believe i have (3.98m), but

70. ## geography

How many miles does Argentina extend from east to west? "" north to south?

71. ## math

Question: Just about everyone in any form of business today has seen at one time or another a Power Point Presentation. Do you think this type of "visual aid" is being overdone and consequently, doesn't have the impact it used to have?

72. ## physics

the coefficient of kinetic friction between the block and inclined plane is 0.28 and angle è = 65°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (a) It is sliding down the slope. m/s2 (b) It has been given

73. ## science

Would the following question apply in Science (or only Physics?): Why liquid soap dispensed through a small spout by pressing on it, solidifies interfering with its smooth ejection? Thanks very much!

74. ## Math correct

Subtract.. (8x^4+5x^3-6)-(2x^2-2x+6) I got 8x^4+5x-2x^2+2x-12 convert the number to scientific notation. 19,450,000,000 I got 1.945x10^10

75. ## psychology

Dr Smartz has been intensely engaged in a study of the twins Annete and Brad for the last two years. You would most accurately say that Dr Smartz is engaged in a,an A gender experiment B correlational study C cross-lagged method D case study I believe the

76. ## Microeconomics

Using the information below answer the following questions. If demand is :Qd = 400.00 - 15.00P and Supply is: Qs = 50.00 + 15.00P Where: Qd = quantity of the good demanded. Qs = quantity of the good supplied. P = price of the good. Part 1: The equilibrium

77. ## match check

Solve the following equation. 3(2x-6)=(6(x-3) a)0 b)1 c)all real numbers d)no solution is it a) 0? Write the number without exponents 3.44X10^10 is it 344,000,000

78. ## Math

The following table gives the winning percentages of the top five coaches in NFL history,what fraction of his games has each coach won? Don Shula 0.676 George Halas 0.672 Tom Landry 0.606 Curly Lambeau 0.624 Paul Brown 0.667

79. ## psychology

Sperm cells carrying the Y chromosome will A always result in the conception of a female baby B will result in the conception of twins more often than those carrying an X chromosome C typically result in children with brown eyes D usually carry less

80. ## Math

Can 606/1000 be reduced further than 303/500?

81. ## math check

Simplify 1) (5t)(5t)^3 My answer: 5t^15 Write the number without exponents 2) 8.78x10^5 My answer: 878,000,000 Multiply. 3) (x+9)^2 My answer: 9x^18

83. ## psychology

Jennifer doesn't menstruate. In searching out the causes of her problem, a doctor could most safely ignore A a nonproduction of estrogen B the importance of Jennifer having only one X sex chromosome C the possibility of Turner's syndrome D the possibility

84. ## MAth

how do i find the domain and range of equations? example: f(x)=ab.solute value of x-3. f(x)=square root 36-x^2 g(x)=-2x+2. how would i know what the domain and range is of these. could i use a graphing calculator to tell me the domain and range??

85. ## spelling

ho do you make a "f" in cursive

86. ## Math

In 1995, 7.4 million people used the internet. The growth rate is 59% each year. What is the general equation of the function?

87. ## sciencec

What is the one thing that does not change in a controlled experiment?

88. ## Math

How many centimeters is 4 inches?

89. ## math

If i place a dish of ice outside in the sun, The ice has a mass of 0.59 kg and a surface area of 0.039 m2. Assuming that the ice is originally at 0 °C and using my answer for part b, which was 1370w/m^2 * 49 * 0.039m^2 = 26.18 watts, How long do i have to

90. ## science

other than jupiter having a solid core like earth what else does jupiter have in common with earth?{please help}

91. ## To DAMON.. (RE: Phys question u solved yesterday)

YOU DID The tension in the string is the force exerted down by the falling disk and up by whatever is holding the disk. They are equal and opposite. If the disk is a yo-yo, that force is exerted by your finger on the string to give the tension. Force up on

92. ## Calculus

Using the Disk Method or washer method (im not sure which one) Find The volume of y=x^3 , y=1 , x = 2 revolving around the X axis

93. ## sci

your opinion, is relative dating accurate? i say yes because .......

94. ## psychology

Monozygotic twins A share 50% of their genetic material B are formed from two eggs but fertilized by the same sperm C are as different as typical sibling are D will have vary similar physical appearance I believe the correct answer is D

95. ## psychology

Regarding causes of infertility, it is the case that A irregular or failed ovulation is the most common cause of female infertility B infertility lies in fertility problems of the male partner in about 12% of cases. C endometriosis result from repeated

96. ## IPC Science

Um.... My question is simple...What should you study the day b4 a Final?

97. ## math

how do you write 2 3/8 as a percentage/

98. ## spelling

form a sentence with the 2 conjunction words she's and cann't

99. ## IT 221

How can a project manager be sure that he or she has chosen the correct metrics to assess project performance? Give at least three examples.

how to put together a crossword puzzle for the state of Pennsylvia

101. ## goe./writtng

does this make sence?: Argentina is a beautiful country filled with vast geography.

102. ## Middle school Engllish

My son recently had an English test where he was marked incorrectly, but I think he was correct. I just need some verification. The question: "The whole neighborhood watched him climb in his old pickup and ______ down our street at full speed." The word to

103. ## CRT/205

Describe a time when your moral values influenced the way you responded to an issue. What differences did you notice between your moral reasoning process and your logical reasoning process? What were the possible outcomes and consequences of your decision?

104. ## science

what wouldbe some examlpes on light and newtons??

105. ## Math

In 1995, 7.4 million people used the internet. The growth rate is 59% each year. What is the general equation of the function?

108. ## geography

Where would I find: a description of argeninte life?

109. ## college

asked by the world will never know
110. ## history project

how to i get started on a middle ages shield?

111. ## Writing

8th graders have a writing test coming up and they have to write an expository essay. The biggest problem is, I don't know what that is...help! If you can tell me and also give me an example. Thanks -MC

112. ## history

What parallel patterns do the law of april 6 and the intolerable acts have in common? How are they different?

113. ## 9th grade american government

What is required to become secretary of state? How it affects our govt? Job description? Salary? When 1st established? Where located? Why is it important?

114. ## science

what are 5 facts on screw?

115. ## Math

I have a question, if f(x)=x/2 and g(x)=3x+1 find: a)(f+g)(x). i do x/2+3x+1, how do i do this?? then how do i subtract those numbers, an how do i multiply them??

116. ## college

Sherri Russell College Mathematics1 December, 16, 2008 Interpreting Graphs and Intercepts Introduction: Graphs are created so that we can quickly derive meaningful information from them. They provide a visual representation of the data and, therefore, an

117. ## spelling

What is an idiom that goes with this sentence?

118. ## space

choose five elements of the universe and tell why they are amazing and wonderous

119. ## chem

why are sig. figs important?

120. ## georgia studies

explain how geography helped to create regional diffrences among the american colonies.

121. ## Math

These sets of numbers all follow logical patterns. Which numbers replace the question marks? ( 1, 8, ?, 64, 125 ) ( 00001, 00011, 00101, ?, 01001 ) ( 17,23,?,18,20,25,21,9,15,16 )

122. ## Math

These sets of numbers all follow logical patterns. Which numbers replace the question marks? ( 00001, 00011, 00101, ?, 01001 )

123. ## Calculus

washer method!? Find the volume of y=x^2+3, y=3, between [0,2] around y=3

124. ## scince

waht is the name of the hair in side your ear that vibrats so you can heah

125. ## social studies

how meny fingers am i holding up

126. ## literay

what kind of emergencies could there be on spacecraft?

127. ## Math IB SL

Factorize: 2x^2-xy-6y^2 ????

128. ## spelling

I don't understand what to do on this: Words that begin with the "be" syllable.

129. ## math

what is the equation for arc length?

130. ## Science

What does a rooster do to defend itself when being attacked?