# Questions Asked onDecember 1, 2009

1. ## Calculus

A man 2m tall walks away from a lamppost whose light is 5m above the ground. If he walks at a speed of 1.5m/s, at what rate is his shadow growing when he is 10m from the lamppost? I tried to draw a diagram, but I don't understand where the 5m is, the

2. ## physics

I really need help on D part of the following problem: A clever engineer designs a "sprong" that obeys the force law F subscript e = -q(x - x subscript e)^3, where x subscript e is the equilibrium position of the end of the sprong and q is the sprong

3. ## Business Maths

A company past experience indicates the 60% of its credit sales are collected in the month of sale, 30% in the next month, and 5% in the second month after the sale, the remainder is never collected, budgeted credit sales were: April 80,000; May 48,000;

4. ## physics

The amplitude of an oscillator decreases to 69.0% of its initial value in 15.5s. a) What is the value of the time constant?

5. ## orgenic chemistry

Aqueous sodium bicarbonate was used to wash the crude n-butyl bromide. What was the purpose of this wash? Give equations. Why would it be undesirable to wash the crude halide with aqueous sodium hydroxide?

6. ## chemistry

When combined with cupric ions (aq, 1M) which will produce the largest standard cell voltage? (Use data from table 20.1, and Appendix D page A28-A29 in Petrucci) 1. ) Mn(s) 2. ) MnCl2(aq) 3. ) KMnO4(aq) 4. ) MnO2(s) the answer i got was MnCl2,,,,but im not

7. ## chemistry

would measuring dimensions of a solid always be possible? Explain thanks =]

asked by Angie =[
8. ## Org. Chem.

Experiment= synthesis of n-butyl bromide, using n-butyl alcohol, NaBr, H2SO4. A) An ether and an alkene are formed as by-products in this reaction. Draw the structures of these by-products and give mechanisms for their formation. I believe the two products

9. ## College Physics

Calculate the rotational inertia of a meter stick, with mass 0.58 kg, about an axis perpendicular to the stick and located at the 43 cm mark. (Treat the stick as a thin rod.) I know I = (1/12)(M)(L^2) and then I need to use the parallel-axis theorem so I

10. ## chem

is F2 +2 ion diamagnetic or paramagnetic? I think its diamagnetic because it loses 2 electrons and it still has no unpaired pairs...i think...thanks.

11. ## SCIENCE

TRANSLATE THE FOLLOWING CHEMICAL EQUATION INTO A SENTENCE. CH4 + 2O2 -> CO2 + 2H2O

12. ## physics

Planet Z is 1.00×10^4 km in diameter. The free-fall acceleration on Planet Z is 10.0 m/s^2. a)What is the mass of Planet Z? b)What is the free-fall acceleration 9000 km above Planet Z's north pole?

13. ## physics

A block of mass M hangs from a rubber cord. The block is supported so that the cord is not stretched. The unstretched length of the cord is L0 and its mass is m, much less than M. The "spring constant" for the cord is k. The block is released and stops at

14. ## physics

A boy reaches out of a window and tosses a ball straight up with a speed of 15 m/s. The ball is 20 m above the ground as he releases it. Use energy to find the following.

15. ## chemistry

What is the volume at STP, in liters, occupied by 26.4 g of F2 gas?

16. ## MATH - solving exponential equations

The half-life of sodium-24 is 14.9 hours. A hospital buys a 40 mg sample of sodium-24. a) How many grams, to the nearest tenth, of sodium-21 will remain after 48 h? b) After how long will only 2.5 mg remain? I don't know how to write the exponential

a=1m,b=3m

18. ## Socials

What effect did the highland clearances and the Irish potato famine have on canada? What effect did the highland clearances and the Irish potato famine have on canada? The highland clearances and the Irish potato famine had an overwhelming effect on

19. ## economics

Why might a profitable motel shut down in the long run if the land on which it is located becomes extremely valuable due to surrounding economic development? What kinds of costs are involved in making a decision to shut down?

20. ## physics

A 1.6 kg particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.2 m/s at x = 0 m. The figure or graph has F (N) along the y axis and velocity along the x axis. A diagonal line drops from positive 10 force

21. ## English

I'm having a hard time with the meter & feet part of my work today. I just don't really get it. Help me with the practice/study questions? (I put a star by the one's I think are right, but the last few I just have no idea.) What metric foot is represented

22. ## British Lit

Inverted word order, unclear pronouns, and variable spellings are characteristics of what type of English? A.Old English B.Elizabethan English C. Middle English

asked by Maggie May
23. ## physics

A sensitive gravimeter at a mountian observatory finds that the free-fall acceleration is 6.00 X 10^3 m/s^2 less than that at sea level. What is the observatory's altitude?

24. ## Physics

A race car driver drives her 1500 kg car around a circular turn, which is banked at an angle of 20 degrees to the horizontal. If the car is traveling around the frictionless curve of radius 100m, a) What is providing the center-seeking force on the car?

25. ## Org. Chem.

If n-butyl alcohol, sodium bromide, water, and concentrated sulfuric acid (cooled in ice bath while adding H2SO4) are placed in a flask and refluxed, what are the formulas of the salts that precipitate when the reaction mixture is cooled?

26. ## chemistry

How many water molecules are in a 10.0g sample of water?

27. ## physics

A rocket is launched straight up from the earth's surface at a speed of 1.80×104 m/s^2. a)What is its speed when it is very far away from the earth?

28. ## math

A land developer wants to develop 20 acres of land. Each lot in the development is to be 5/4 of an acre. How many lots will the land developer have in the 20 acres? Can you please just explain how to do the promblem.

29. ## 7th grade science fair project

okay hi there, love ya site! ok i need help with a project im doing this project about iodine + starch turning blue when theres starch present in the food. got any suggestions? thanks......

30. ## English

What kind of movie do you like? Why? 1. I like comedy movies because I can laugh while watching them. 2. I like romantic movies because I feel happy when I watch them. 3. I like horror movies because I can feel thrilled. 4. I like action movies because I

31. ## Biology

The best conclusion concerning delta is that the cells

32. ## 8th grade Algebra I (junior level math)

Hello, I am currently in Unit 4-1 (Ratio, and Proportions) and I don't understand how pairs of ratios could form proportions. Could someone give me step by step instructions? Thank You

33. ## biology

is the blood that your heart pumps to your stomach part of the pulmonary circulatory loop?

34. ## physic

Hi! help me please, Thank you. A spherical steel ball bearing has a diameter of 2.540 cm at 23°C. (a) What is the diameter when its temperature is raised to 94°C? cm (b) What temperature change is required to increase its volume by 0.9%? I only need help

35. ## trig

prove that (2cosx+1)(2cosx-1)= 1 +2cos2x

36. ## Physics!

A wheel rotates with a constant angular acceleration of 3.50 rad/s2. The angular speed of the wheel is 2.00 rad/s at t = 0. If the radius of the wheel is doubled, Are the following statements affected? If so, in what way? (Select all that apply.) (1)The

asked by Diane M.
37. ## sicence

Surface waves cause the most damage, but they are ironically called

38. ## math

the profits of Mr/ Lucky's company can be represented by the equation y=-3x^2+18x-4, where y is the amount of profit in hundreds of thousands of dollars and x is the number of years of operation. He realizes his company is on the downturn and wishes to

39. ## AP Government

The phenomenon of vote fraud has led some scholars to conclude that a. confidence in government has undergone a genuine decline in this century. b. confidence in government has undergone only an apparent decline c. voter turnout has increased dramatically.

40. ## Algebra 1

A cheetah is 300 feet from its prey. It starts to sprint toward its prey at 90 feet per second. At the same time, the prey starts to sprint at 70 feet per second. When will the cheetah catch its prey?

41. ## sicence

Where a major earthquake has happened in the past, but not in a while, is called a seismic a)gap b)wave C)fault d)scale

42. ## English

1. She had three sons, and they were happy family. (Is this a right sentence?) 2. One day she got a disease and stayed in bed. (Is it OK?) 3. What will you do 20 years later? 3-1. I will teach math at an academy. 3-2. I will be studying abroad. 3-3. I will

43. ## Chemistry

How many molecules are present in 1.00 mg of asprin, C9H8O4?

44. ## chemistry

1. the volume of an idea gas is 2.06L at standard temperature and pressure. Calculate the volume at 1.75 atm and 27CELCIUS. 2. Ethane, C2h6 has a molar heat of vaporization of 15kj/mole. How many kilojoules or energy are required to vaporize 5 g of ethane?

45. ## Biology

I had a Bio lab about gel electrophoresis and PCR. for each lab, we have to make up thoughtful, detailed questions. You don't have to answer the questions so please don't go through the trouble by answering them. The first question is about something we

46. ## Math

I need to write 2 equations that represent the same exponential function with a y-intercept of 5 and an asymptote at y=3. I got y=2^(x+1) + 3 but I don't know how to find the second equation. Can someone please explain this to me. Thanks.

47. ## physics

Two point charges are 10.0 cm apart and have charges of 2.0 µC and -2.0 µC, respectively. What is the magnitude of the electric field at the midpoint between the two charges?

48. ## physics

A transverse wave on a string is described by the following equation. y(x, t) = (0.35 m) sin[(1.25 rad/m)x + (92.8 rad/s)t] Consider the element of the string at x = 0. (a) What is the time interval between the first two instants when this element has a

49. ## geometry

A spherical water tank has a diameter of 10 feet. How much water does it hold when half full (use 3.14 for , and round to the nearest hundredth)?

50. ## chemistry

For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?

51. ## math

dad asks what you konw about patterns when you multiply by 10.write to explain the pattern, how to use it,and how to know that you are right.use your age as one factor and 10 as the other factor.

52. ## Ap world history

How do i write a thesis statement for analyze the Han and Roman attitudes towards technology? Or can i get one to use?

53. ## math

A recipe for muffin mix calls for 8 cups of flour, 3 cups of oatmeal, and 4 tablespoons of baking powder along with other ingredients. If you had only 3 cups of flour to make a batch of muffins, what would be the proper amounts of oatmeal and baking powder

54. ## college physics

In the figure below, two particles, each with mass m = 0.82 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 10 cm and mass M = 2.0 kg. The combination rotates around the rotation axis with angular speed

55. ## geometry

I am a location in space. It takes only one letter to name me

56. ## Advance Biology

I have to find the correct term that best fits each definition. 1)The "transforming factor" that alters pneumonia bacteria 2)The three parts of every nucleotide 3)A pair of these forms a "rung" in the DNA ladder 4)Used to "label" DNA and protein in

57. ## Spanish 1

How would I complete this phrase. Nosotros BLANK americanos. BLANK alumnos en una escuela secundaria. BLANK alumnos en la escuela martin luther king.

58. ## chem

balance 1-butanol + oxygen=carbon dioxide+water how many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completly burned?

59. ## Physics

An object has a mass of 0.5 kg. It undergoes a simple harmonic motion. The amplitude of that motion is 0.07 m and the period is 0.31 s. What is the total energy of the object?

60. ## Science

Solid table salt does not conduct electricity. How does dissolving salt in water allow electricity to flow?

61. ## math

Erika spent5/6 hr. on her computer visiting the History Channel and the Discovery Channel websites. She spent 12 minutes at the history channel website. What fraction of an hour did she spend at the discovery channel website?

62. ## English

(I apprecialte your help and kindness.) What kind of movie do you like? Why? 1. I like sci-fi movies because I am interested in fantastic things. 2. I like a sci-fi movie because I am interested in fantastic things. 3. I like sci-fis because I am

63. ## algebra

how do you measure the interior angle and exterior angle of the indicated polygon which is regular 60 gon

64. ## chemistry

HOW MANY MOLES IS 1.50*10 TO THE 23RD POWER MOLECULES NH3

65. ## physics

please i need help solving this problem, what is the resistance of a resistor if the potential difference across the resistor is 4.0 V when a current of 10.0 A flows through the resistor?

66. ## chemistry

. Do you think that determining the volumes of your cylindrical metal samples by measuring their dimensions and calculating would be more or less accurate than determining these volumes by water displacement?

67. ## Organic Chemistry

CH2=CH2 +H2O CH3-CH2-OH Delta H = -10.6 kcal/mol Delta S = -30.3 cal/Kmol why is delta S a negative value?

68. ## Math

Is 3x-4=12 a linear equation? i know that 3x=16 but would that be considered linear? it would just be a vertical line correct?

69. ## English

1. How do you pronounce "Shrek", the movie title? 2. Then come to Peter's on Saturday, 12 o'clock. 3. Then come to Peter's at 12 o'clock on Saturday. (Is Sentence 2 grammatical? What about Sentence 3?)

70. ## college

I need assistance with writing a business memo report for english does anyone have examples.

71. ## Socials

Clothing Upper class -expensive -elaborate -stiff -fancy -colorful -high quality -royal -decorative elements -highly structured jewelry Clothing Middle Class -simple dresses/outfits -plain -inexpensive -practical Clothing Working Class -plain -dull -dirty

72. ## Socials

Transportation Upper class -carriage material -Chariots -Litters Transportation Middle Class -paddle by bike -walk by foot -Wagons -Horses? -Carts Transportation Working Class -walk by foot Is that all I need for working class?

73. ## science

What is the definition of organic compound?

74. ## General

What's the proper way to reference a book from Project Gutenberg (MLA format)? It doesn't have all the information for the book format, but it was originally published as a book, so the web page format doesn't seem right. (If it matters, the book is Lewis

75. ## math

For example, 1 + 2 + 3 + – 4 + 5 + 6 + 78 + 9 = 100 Can you obtain a total of 100 using fewer plus or minus signs than in the given example?

76. ## English 150

I have a one page essay due tomorrow morning. I need someone to proof read this for me if you don't mind. I am looking to make sure i have everything in MLA format, correct grammar, etc and it sounds right. Any help would be so appreciated! Here goes....

77. ## 7th grade

Find tony's rate in miles per hour for each part of the route. Distance traveled Hours 5 miles .33 8 miles .4 15 miles .67

78. ## Chemistry

I did a lab where we had to determine the iron content in ore...i am confused about the reactions that occured during the reaction...i need reactions for the following... 1) The samples were treated with 6M HCl until all the iron ore dissolved.Assuming all

79. ## social studies

After conquering lands, the aryans would introduce new ideas, beleif systems,languages, and new religions like __________ to the inidenous people. i thought it was hinduism but im not sure :( please help :D

80. ## math

what are the odds in favor of getting at least one head in three successive flips of a coin? I need to know the formula on this. I have 1/6 over 1- 1/6. But I can't figure out how to do the math. Am I right?

81. ## Science

Can you explain how attractions between molecules could cause polar water to have a higher boiling point than a non polar carbon dioxide?

82. ## physics

A particle of mass m starts from x subscript o = 0 m with V subscript o > 0 m/s. The particle experiences the variable force F subscript x = F subscript o sin (cx) as it moves to the right along the x-axis, where F subscript o and c are constants. I have

83. ## English

Can you please check the grammar in these two separate points. Thank you. Irene shares with Clare how her daughter would be affected if John found out about his own wifes “true race” and reveals to Clare would could happen. The lesson that Larson is

84. ## college

Create a 3-5 page Request for Proposal (RFP) for bringing in outside trainers to train staff on the use of Microsoft Office® programs.

85. ## Creative Writing

what is a asituation that is currently in the news that would make a good topic for a cause and effect essay? i need to find osme information that lists the possible causes of that situation. (the category can be a health issue, national or international

86. ## Socials

Housing Upper class -large -had valuable professions in them -very expensive -safe -comfortable -beautiful decorations inside -elegant Housing Middle class -cramped apartments -basic -overcrowded -small Housing Working Class -small -crampy overcrowded

87. ## Math

the total cost for a school bus rental is 350\$/day. Each bus holds 60 students. Find the cost (c) of renting the school bus as a function of the number of students going on a trip (n). My answer: I have come up with relating the 350\$ to n/60 but i am stuck

88. ## Algebra

How would i solve: 1/6(12-6x)= 5(x+4)

89. ## Physics

Alcohol flows smoothly through a horizontal pipe that tapers in cross-sectional area from A1 = 41.9 cm2 to A2= A1/3. The pressure difference Δp between the wide and the narrow sections of the pipe is 11.1 kPa. What is the volume flow rate ΔV/Δt of the

90. ## algebra

(4b^4-3b^3+5b^2+14b-9) + (b^5+9b^3+3b^2-5b+4 + (-7b^4+b^2-4b-6)

91. ## physics

U(J) 6 | | 4 | \ | 2 \ ______/ \ / \_____/ 0 1 3 5 7 8 x(cm) Best I could do in drawing a graph!! A 10 g particle has the potential energy shown in the figure above. Part A: How much work does the force do as the particle moves from 2 cm to 6 cm? W = ? J

92. ## English

What is a transcendentalist?

93. ## 8th grade Algebra I (junior level math)

How do i solve proportions? step by step answers plz!!!! EXAMPLE! g/5 = 6/10

94. ## English

In the book To Kill A Mocking Bird why does Mayella also represent a mocking bird. Who in todays society can be looked upon as a mocking bird?

95. ## Biology

This is a 2 factor cross punnett square- An albino, nonhemophilic man, marries a normally pigmented, nonhemophilic woman whose father was hemophilic and whose mother was albino. What kind of children can they have and in what proportion? Hemophilia is a

96. ## English

Why would author Charles Dickens write about poverty and generosity in his writings A Christmas Carol?

97. ## Business Management

Suggest and summarize in-depth, the planning, organizing, leading and controlling activities as it relates to delegation for these managers.

98. ## Science Grade 8

How does a water-saving shower head work?

99. ## calc

f(x)= x^2 / (x-2)^2 find the intervals of concavity and the inflections points

100. ## child

In preparing a budget for a day care center, you must plan for taxes. As an employer, you must pay part of each employee’s _______ tax. A. Social Security C. state income B. federal income D. local

101. ## chemistry

If 20.0g of nitrogen gas has a volume of 4.00L and a pressure of 6.0 atm, what is its temperature?

102. ## literature

"The best in this kind are but shadows" is

103. ## English

1. That sounds fun to me. (What is the part of sppech of 'fun'? Is it a noun or an adjective? What about "funny" instead of "fun"? 2. That sounds funny to me. 3. That sounds interesting to me. (Do the three have the same meaning?)

104. ## AP Government

Which of the following statements about political cleavage among blacks is correct? a. more political cleavage seems to exist among whites than blacks b.differences in opinion between poor and better off blacks is less than between poor and better off

105. ## math

help me write a formula that illustrates that I am in the market for a new home and there are 56 houses available and only two floor plans left using y and x

106. ## English

How can I make a good project for school re. promotion about perfume for example? I must do it on cardboard with pictures and promotional language to market the/a perfume. Your help is much appreciated. Husam

107. ## spanish II

how do you say sell food and hang clothes on a line in spanish

108. ## science

Explain how so many languages spoken in south asia are related?

109. ## math

Stock in a company is selling for \$113/4 per share. If someone purchases \$893 worth of stock in this company, how many shares did they get? please explain

110. ## social studies ww1

what was united states policy toward the war when it broke out PLEASE HELLLLP

111. ## Computers

On Open office the word program how do you do headers. Every time i go to insert header it says default and puts the header on every page. The teacher says it has to be .5 on the right hand corner from our second page to the end. Any Suggestions.

112. ## Socials

Education Upper class -high status -church jobs Middle class -high professions -good degrees Working class -skilled labour/unskilled labour Please add to this, I would appreciate more info, thanks in return

113. ## world culture

Explain how so many languages spoken in south asia are related? PLEASE HELP

114. ## to bobpursley

In my heads/tails question- why isn't it 1/6? I flip a coin three times, aren't there only 6 possible outcomes?

115. ## Hamlet Essay Thesis

I'm suppose to write an essay on the play Hamlet which connects one of the themes to a character in the play. This is my thesis, Ophelia, Hamlet's ex lover, is one of the main characters in the play Hamlet which re-enforces the theme that women were

asked by Camille P
116. ## algebra

30b^3+8b^2+34b+26/5b+3

117. ## math

How does knowing 24 divided by 3 =8 help you solve 24 divided y 6?

118. ## PreCalculus

Ok I know that the slope of a straight line is the same thing as x with a dot aboce it or simply the first derivative of x on the unit circle tangent gives you the slope of the reference line right? This can be expressed using the notation expressed above

119. ## spanish

En la 11.___ te llame.

120. ## Literature

I'm reposting this because I didn't quite understand what Guru told me last time... "Explain how people can find miracles in everyday life. Support your ideas with examples from the two poems 'in Just' and 'Fog'." Please help..thanks -MC

121. ## Literature

Need help with this: "Explain how people can find miracles in everyday life. Support your ideas with examples from the two poems 'in Just' and 'Fog'." Please help..thanks -MC

122. ## World History quick question

What kind of picture/symbol would you draw for principle of intervention?

123. ## English

Can you please just check the grammar in this for me. Larsen's theme goes to prove that when somebody is unable to recognize their real identity, their false face that they put on leads them towards possible danger. Those individuals are willing to risk

124. ## biology

how do bacteria , potoceises , fungi , plants , and animlas sahre the same characteristics ?

125. ## geogeraphy

what is geography

126. ## Social Studies

How does the movie The Lion in Winter relate to World History? thanks

127. ## maths

prove that the following function is differentiable at x=0 using first principles: f(x)= e^x when x0 or x=0 also is f(x) differntiable for all real x?

128. ## calc

a) Suppose f(x) is defined on 0 ≤x≤1 by the following rule: f(x) is the first digit in the decimal expansion for x. For example, f(1/2) = 5 and f(0.719) = 7. Sketch the graph of y = f(x) on the unit interval with appropriate scales for x and for y. Use

129. ## Medical Codding and Billing

#1 You're an inpatient coder in a hospital. You've just coded a Medicare Part A record with a diagnosis-related group (DRG) reinbursement of \$12,000. You notic in the hospital's computer billing system that the patient's charges are \$19,500. That's \$7,500

130. ## Science

Why is it necessary in plants ,pollination to take place?

131. ## Socials

Earning A living Upper class -luxury -prosperity -superior positions Middle class -merchants -trade -farming -household Working Class -poverty Is there more info I could add into either one.

132. ## college math

sam bought 1 of 250 tickets for \$2 in a raffle with the prize of \$400. Was \$2 fair price? Can someone show me the formula on how to get this answer. My text is super confusing.

133. ## English

Can someone please check the grammar in these last two for me. I posted this about 8:00 and no one ever answered. I do understand that you are helping other individuals to. Your help is greatly appreciated. The tension that Irene has towards Bellew shows

134. ## math

change both measurements to the same unit of measure,and find the scale factor. 1. 4in. model of a 6ft.cabinet 2. 4cm. model of a 2m. door. 3. 12ft. model of a 100yd. playground 4. 20m. model of a 3km. street.

135. ## 6th Grade Math

If a plane is going on a 500 mile trip, how many minutes will it take to get there for a speed of 400, 300, 200, and 100 mph? For 500 it wil obviously take 1 hour, but my brain is dead today and I can't figure out the other four.

136. ## Physics

i spent so much time putting this equation together, but now I'm so confused solving for T 110 g x 4.816 J/g/C x (T-17)+31g x 0.385J/g/C x (T-300)=0 Can you help me

137. ## critical thinking

Identifying fallacies I am having a hard time understanding

138. ## business law

Adam’s godmother, Helen, is 93 years old and in poor health. Helen is a life-long alcoholic and has a history of depression and bipolar disorder. At the party celebrating Adam’s high school graduation, after consuming several Double Martini’s, Helen,

asked by scoobies law
139. ## math

5/2=x/8 vaule how ??

140. ## american lit. [[10th grade]]

i need to write an essay about how holden caulfield from the catcher in the rye is fascinated with childhood and innocence. what can i include as examples for that?

141. ## math

what is the difference between a number sentence and an expression?

142. ## English

Can you please check these last two for me. Thank You and have a great evening. The tension that Irene has towards Bellew shows that she does not appreciate the fact that he is an racist individual, who does not take other people's feelings into

143. ## ethnics

how can I address my family's criticisms of and attitudes about higher education?

144. ## ethnics

How can I also dispel their fears and try to convince them that going to college is a worthwhile endeavor for me?

145. ## math

y=-6/7x9/10 whats the slope

146. ## Careers

What are registered nurses required to do? Everyone is saying it is intense labour work. Thanks :)

147. ## Science

There are 3 types of potential energy. I only can figure out two: Chemical and Nuclear! What is the third one?

148. ## crt205

When you are building an argument for an issue that is significant to you, do you think it is more important to be valid or sound? Explain your answer.

149. ## science

i want to know what a particle model is for magnesium oxide

150. ## science

the first tools helped people gather food, protect themselves and build _____.

151. ## English

1. There is a party next week. Can you go with me? 2. There is a party next week. Can you come with me? (Which one is correct? Do we have to use 'come' or 'go' in this context?)

152. ## science

sometimes you get when you touch a metal doorknob because negative charges jump from your hand to the doorknob

153. ## Oracle

Im supposed to add the column Status to the Orderlines table. Its data type is VARCHAR2(30). After adding the column. i need to update the table. If OrderID is 214011, its status will be "Completed". Would like to someone to see if my solution is correct i

154. ## CRT 250

The annual rainfall in California’s north valley averages twenty-three inches. So the rainfall next year will be twenty-three inches.

155. ## 8th grade

I know the answer but how do i get my starting line ? Vancover recivers 3 times the amount of snow as toyko does together they recive 80 cm i can see that vancover will be 60 cm and toyko 20 cm but i do not know how to do it weird eh ?

156. ## elementary

14. Use the definition of less than to show each of the following: a. 2 , 4 b. 3 , 100 c. 0 , 3

157. ## English

1. It's about a funny monster and a funnier princess, falling in love to/with each other. (Which preposition do we have to use, 'with' or' to'? Are both OK?) 2. It's about a funny monster and a funnier princess, and they fall in love with each other. (Does

158. ## English

1. This is middle school located in Chicago. 2. This is a middle school located in Chicago. 3. This is the middle school located in Chicago. 4. This is a boys' middle school located in Chicago. 5. This is boys' middle school located in Chicago. (Are all

159. ## Literature

This is my free verse poem about a cat stuck in a vending machine. Is it alright? Inside I lay of a crowded box Hungry for 3 straight days The ironic part being that I was in a vending machine. The fear made me shiver til’ my insides quivered Would I

160. ## To Ms. Sue

Ms. Sue I responded back to my previous question, may you please have a moment to look at it, thanks

161. ## To Ms. Sue

I put A for the existance of more political cleavage among whites than blacks, but it was incorrect!!

162. ## Chemistry

How do I convert the following quantity to moles? 44.0g of H2O

163. ## 3rd grade

need a website that shows polygons

164. ## art

why do you have so many math questions.

165. ## Advance Biology

What is attacted by herpes?

166. ## Marketing

What arguments can you make against the common assumption that marketers only worry about advertising?

167. ## social studies

why did the nations of Europe go to war

168. ## math

f"(x)=2, f'(2)=5, f(2)=10. solve this differential equation by finding the particular solution. How do you do this?

169. ## social studies

why are there so many farms in highlands

asked by ashley shahna
170. ## math

your school is raffling off a TV set and a total of 750 tickets were sold. you sold 75 tickets to your family. what fractional value did you sell?

171. ## PreCalculus

h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 9 7 1 4 6 2 0

172. ## science

the flow of energy through a community is a ?

173. ## history

what do chinook indian people eat and with what did they do there house

174. ## algebra

10x^4-9x^2+2=0

175. ## language

what sentence could you use please in an appaositive sentence