# Questions Asked onMarch 5, 2011

1. ## math

A 65-kg boy is sitting on a seesaw 0.6 m from the balance point. How far from the balance point should a 40-kg girl sit so that the seesaw remains balance?

2. ## physics

A force of magnitude 7.50 N pushes three boxes with masses m1=1.30kg m2=3.20kg, and m3=4.90kg. find the magnitude of the contact force between boxes 1 and 2. find the magnitude of the contact force between boxes 2 and 3.

3. ## Chem

The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to a liquid at -161°C. Water becomes a gas at 100°C. What could account for the differences?

4. ## physics

5. A tin nucleus has charge +50e. Find the potential V at a distance of 10-12 meters from the nucleus and the potential energy U of a proton at this position. The proton has charge +e = 1.6 x 10-19 C

5. ## Physics

Which of the following statements is true for an elastic collision? A. Both momentum and kinetic energy are conserved. B. Momentum is conserved, but kinetic energy is not conserved. C. Kinetic energy is conserved, but momentum is not conserved. D. The

6. ## calculus

If the fish population, p, in a lake can be modelled by the function p(t)=15(t^2+30)(t+8), where t is the time, in years , from now. How do I determine the rate of change when the population when there are 5000 fish in the lake?

7. ## Physics

A spiral spring is compressed so as to add U units of potential energy to it. When this spring is instead stretched two-thirds of the distance it was compressed, its remaining potential energy in the same units will be a. 2U/3 b. 4U/9 c. U/3 d. U/9

8. ## calculus

A hollow cone has height 5 feet and base diameter 4 feet. The vertex of the cone is pointed down so that it can serve as a container. Water is poured into the cone at the rate 3/2 cubic feet per second. At what rate (in feet per second) is the depth of the

9. ## Chemistry

The products for the following: CaCl2(aq) + K2CO3(aq) ¨ A. CaCO3(s) + 2KCl(aq) B. CaCO3(aq) + 2KCl(s) C. none of these D. no reaction

10. ## Chemistry

A water sample saturated in CaF2 has Ca2+ of 115 ppm (115g Ca2+ per 10^6g water sample). What is the F- ion content of the water in ppm?

11. ## ENGLISH 2

2. In at least three sentences, explain if ethos, pathos and logos have each been effectively established in this speech. Pearson’s address on the inauguration of the national flag of Canada: On September 5, 1945 an Order-in-Council was passed declaring

12. ## Chemistry

if a 100g sample of water at 60.0 C is added to a 100.0 g sample of water at 10.0 C, determine the final temperature of the water. Assume no heat is lost to the surroundings

13. ## Physics Concepts

A father racing his son has one-third the kinetic energy of the son, who has two-fifths the mass of the father. The father speeds up by 1.5 m/s and then has the same kinetic energy as the son. What is the Father's initial speed? What is the Son's initial

14. ## Physics

You drop an egg from rest with no air resistance. As it falls, a. only its momentum is conserved. b. only its kinetic energy is conserved. c. both its momentum and its mechanical energy are conserved. d. its mechanical energy is conserved, but its momentum

15. ## Physics

A glider airplane is coasting horizontally when a very heavy object suddenly falls out of it. As a result of dropping this object, the glider's speed will a. increase. b. decrease. c. remain the same as it was.

16. ## chem

What is the [OH-] for a solution at 25°C that has [H3O+] = 8.23 × 10-2 M?

17. ## physics

8. Determine the acceleration of a proton in an electric field of 500 N/C. How many times is this greater than that due to gravity? The proton mass is 1.67 x 10-27 kg.

18. ## Chemistry

What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.

19. ## Chemistry

What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.

20. ## Physics

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is

21. ## chemistry

If you had 500.0 ml of a 0.10 M solution of HCLO, what mass of the corresponding Na+ (sodium salt) of the conjugate base would you need to make the buffer?

22. ## Physics

A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force

23. ## Physics

Calculate the distance (in km)that Larry runs if he maintains an average speed of 8km/hr for 45 minutes.

24. ## Chemistry

Calculate the mass in grams for a gold sample that absorbs 245J to change its temperature from 19 degrees to 49 degrees

25. ## Geometry - Math

A picture measures 20 cm x 25 cm. The width of the matting and frame at the top and bottom is 5cm. What should be the dimensions of the frame so that the framed picture is similar to the picture alone

Find the area lying above the x axis and below the parabolic curve y= 4x -x^2 a.8 b. 8 1/3 c. 10 2/3 d. 16 B or C not sure??

27. ## Amer Lit

I am doing a formal paper about the book The Great Gatsby and how the character's American Dreams cause them to have pain when they could have been content with more modest ambitions. Can you look at my introductory paragraph and tell me if I have a good

28. ## english

So first off i want to say writing essays are not in my strengths. so i was wondering if someone could read my intro paragraph and critic it. and im suppose to have a thesis statement and iim not sure if i do...? here is the topiic im writing on. The lost

29. ## algebra

What is the midpoint of the line segment connecting the points (2,- 3)and (4,9)?

30. ## physics

Which of the following statements is true for an inelastic collision? A. Both momentum and kinetic energy are conserved. B. Momentum is conserved, but kinetic energy is not conserved. C. Kinetic energy is conserved, but momentum is not conserved. D. The

31. ## Math

A picture measures 20 cm x 25 cm. The width of the matting and frame at the top and bottom is 5cm. What should be the dimensions of the frame so that the framed picture is similar to the picture alone

32. ## math

julie travels 6 times faster then mill. Traveling in opposite directions, they are 714 miles apart afte 6 hours. Find the rate of travel

33. ## math

A garden has the shape of a right triangle with one leg 3 meters longer tha the other. The hypotenuse is 3 meters less than twice the lenght of the shorter leg.

34. ## Chemistry

A 20.0 ml sample of an unknown HCl solution requires titration with 15.0ml of 0.1MNaOH solution to reach equivalent point. What is the concentration of the HCl solution? HCl + NaOH ¨ H2O + NaCl A. 0.000075 B. 75 C. none of these D. 0.075

35. ## physics

You pull a short refrigerator with a constant force across a greased (frictionless) floor, either with horizontal (case 1) or with tilted upward at an angle 38° (case 2). (a) What is the ratio of the refrigerator's speed in case 2 to its speed in case 1

36. ## investment and real estate analysis

A 9-year bond has a yield of 6.0% and a duration of 7.982 years. If the market yield changes by 35 basis points, what is the percentage change in the bond’s price?

37. ## physics

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of

38. ## Statistics

A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.85 feet. Assume that the lengths of individual pipes produced by the process are

39. ## Chemistry

For the reaction: C4H10 + O2 ¨ CO2 + H2O ( is this balanced?) , how many moles of CO2 is formed when 5.00 moles C4H10 reacts with O2? A. 5.00 B. 1.25 C. 20.0

40. ## math

How many solutions does the following system have: 2x + 5y = 10 3x + 6y = 12 Explain how to determine the number of solutions without solving the system. Then apply elimination, and interpret the resulting equation.

41. ## math

uestion: Five cards are dealt from standard deck of 52 cards, what is the probability of being dealt 3 kings? Here is what I have P(3 kings)= C(4,3) = 3 out of 4 kings being dealt C(48,2 = 2 out of remaning cards to complete 5 card deal C(52,5) = 5 cards

42. ## ECO 550

1) You have opened your own word-processing service. You bought a personal computer, and paid \$5,000 for it. However, due to the cost changes in the computer industry, the current price of an equivalent machine is \$2,500. You could sell any used machine

43. ## math

It is known from experience that in a certain industry 40 percent of all labour-management disputes are over wages, 40 percent are over working conditions, and 20 percent are over fringe benefit. Also, 9 percent of the disputes over wages are resolved

44. ## health

assess an infant,Discuss at least two social factors that are impacting the health of your client. Be certain to specifically state how those factors positively or negatively affect your client’s health. Discuss at least two cultural factors that are

45. ## physics - energy

1) What are the 3 basic forms of energy? Since there are so many, I'm thinking of kinetic and potential, but what would be the third? 2)The increase in potential energy of any system is equal to the output ___.

46. ## calculus

I have been asked to solve this two different ways. The first way is to use the chain rule and then simplify (which I have already done properly), and the second way is to simplify and then differentiate (not necessarily with the chain rule). I am stuck on

47. ## Physics

Two lumps of clay having equal masses and speeds, but traveling in opposite directions, collide and stick together. Which of the following statements about this system of lumps must be true? A. The momentum of the system is conserved during the collision.

48. ## geometry

Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks

49. ## physics

Two equally charged balls, each of mass 0.10 gm, are suspended from the same point by threads 13 cm long. The balls come to rest 10 cm apart due to electrostatic repulsion. Determine the charge on each ball.

50. ## statistics

A mini-computer system contains two components, A and B. The system will function so long as either A or B functions. The probability that A functions is 0.95, the probability that B functions is 0.90, and the probability that both function is 0.88. What

51. ## Physics

A proton with a speed of 4.20×104 km/s makes an elastic head-on collision with a stationary carbon nucleus. We can look up the masses of both particles. Which of the following quantities can be calculated from only the known information? A. The velocity

1. A body is moving along a straight line with a velocity which varies according to the equation v=9t^2+2t, where v is in feet per second and t is in seconds. Find the expression for the distance as a function of time. A. 3t^3+t^2+C B. 3t^3+2t^2+C C. 18t+C

5: You are attending a professional conference and are privileged to be introduced to Caroline Peters. You know nothing about her except that she is an executive at a very successful company. You have and idea that you would like to talk over with her. How

54. ## finance

Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation and note the specific events as they might apply to the information from your chapter. You will use this data to form the basis

55. ## Physics

A computer is reading data from a rotating CD-ROM. At a point that is 0.032 m from the center of the disc, the centripetal acceleration is 111 m/s2. What is the centripetal acceleration at a point that is 0.070 m from the center of the disc?

56. ## history

Which statement about Attorney General Palmer is true? A) He criticized President Wilson's decision to release Eugene Debs B) As attorney general, he championed the rights of free speech C) Promoting Red Scare hysteria was part of his attempt to be

57. ## Amer Lit

So I posted something like this about my introductory paragraph. I have my conclusion and was wondering if you could tell me if I have a good conclusion with restating my thesis and closing it all up. I will show you my introduct and conclusion so you can

58. ## geometry

Find the perimeter and area of a right triangle if one leg measures 24 ft. and the other leg measures 70 ft. Please show the steps so I can do the next one. Thanks

59. ## Physics

Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest. When the springs have reached their maximum compression, a. cart A has come to rest relative to the ground. b. both carts have the same

60. ## Organic Chemistry Lab

a)If the Keq for the esterification of acetic acid with isopentyl alcohol is 3.0, what is the maximum amount of isopentyl acetate that can be recovered at equilibrium if a 1:1 mole ratio of alcohol was used? b)If a 1:5 mole ratio was used? c) 5:1 mole

61. ## Math

In NY the ratio of private homes to apartment is 3:5 . If all the apartments are brick made and 1/10 of the private homes are wooden what is the maximum portion of houses that may be brick made? a 15/16 b 5/8

Write an equation that forms a system of equations with x + y = 4, so that the system has: a) No solution b) Infinitely many solutions c) One solution I know how to figure out if two linear systems have a solution, but I don't understand how you could

63. ## calculus

Consider the illustration, which shows a rotating beam of light located 0.5 mile from a shoreline. The beam rotates at a rate of 4 revolutions per minute. How fast (in miles per minute) is the distance between the beam and the point where it strikes the

64. ## Chemistry

For the reaction: H2(g) + Cl2(g) ¨ HCl(g) (is this balanced?) calculate the mass, in grams of H2 needed to react with 25.0g Cl2. A. none of these B. 25.0 C. 0.711 D. 0.353

66. ## chemisty

A 5.10-g sample of iron is heated from 36.0 C to 75.0 C. The amount of energy required is 89.5 J. the specific heat capacity of the sample of iron is?

67. ## english

"For Richard, a life's meaning is in the independence of the individual. Thtat means that Richard sees life as a quest for thruth. He stubbornly seeks answers where none--or no satisfactory ones--are given. Time ans again. Richard finds himself at odds

multiple questions: 1- Computers are connected to the internet through a)direct connection b)dial up connections through modems c)broadband connection through high speed alternatives to modems d)all of these 2)who is the person responsible for the

69. ## Chemistry

which of the following has the largest radius A. CI- B. S2- C. K+ D. Ar E. Ca2+

70. ## algebra

A triangle has sides of lengths 20, 28, and 32. A similiar triangle has a side of length 15 and another of length 24. How long is the third side of this triangle?

71. ## English

I need to find 4 rhetorical devices and I am having trouble! Pearson’s address on the inauguration of the national flag of Canada: On September 5, 1945 an Order-in-Council was passed declaring the Red Ensign to be Canada's National Flag pending a

72. ## physics

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 180 m), the block swings toward

73. ## computers

I am going to become a tutor for kids grade K-3.I am tutoring Math, Writing, and Reading. Do you know any good websites that contain free printable worksheets?

74. ## Math

Complete the following statements about the measures of angles in the ﬁgure shown, where and state the generalization that supports each statement. m

determine if the equation of the line f(x) = x + 1 a function using the Vertical Line Test?

76. ## trig

Suppose the tangent of an acute angle in a right triangle is less than 1. How does the side opposite the angle compare to the side adjacent to the angle?

77. ## pysc

an object A 2.5kg is traveling at 25meters per second collides head on with a 5kg mass b calculate the velocity of the 5kg mass if 1.the mass b is initially at rest 2.traveling opposite to mass A at 20m/s 3.traveling in the same direction as A at 12m/s

78. ## calculus

How do I find the x values at which the tangents to the graphs f(x)=2x^2 and g(x)=x^3 have the same slope?

79. ## Calculus

Say we want to determine how many people we can invite to a party for a given budget (\$ input). We want one snack and one soda for each person. The snack cost is \$1 and the soda cost is \$1 per can for \$2 total. Write a function that outputs how many people

80. ## LAN

Explain how you would create the users for the sales organization unit and how to set up work groups in this particular situation. e. Keep in mind that you may have to name certain applications and allowable tasks for each individual or job role. f.

81. ## physics

10. A length L of wire has a charge density of  C/m. What is the electric field at an axial distance r from the wire if L is 5 meters,  is 5 x 10-8 C/m and r is 10 cm. Use Gauss’s Law to solve.

82. ## History

How did India experience that arrival of the British, in light of the past? How did India experience the British domination? How did India emerged out of British domination in the 20th century as an independent nation?

83. ## Chemistry

What is the molarity of CuCl2 solution that completely reacts with 10.0g of zinc , if the volume of the solution is 360mls? Zn(s) + CuCl2(aq) ¨ ZnCl2(aq) + Cu(s) A. 0.42 B. 0.00021 C. 0.21 D. none of these

84. ## pysc

a locomotive of mass 15000kg traveling at 2.5m/s collides and couples with a set of rail carts of mass 7000kg.calculate: 1.the combined velocity of the train and carts after impact 2.the loss in kinetic energy in the collision

what is your opinion of leadership? I think leadership isn't always about being outspoken and holding a high position in an extracurricular activity. I just want to hear your opinions, that refute the norm meaning of leadership. thank you

86. ## chemistry

What is the purpose of adding zinc chloride in the preparation of starch iodide paste? Please refer to the procedure below: - Starch Iodide Paste- Heat 100mL of water in a 250mL beaker to boiling, add a solution of 0.75g of potassium iodide in 5mL of

87. ## Physics

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 180 m), the block swings toward

The U C C dose not apply in cases where both parties are merchants. True or False

89. ## chemistry

in a exothermic reaction ________ energy is converted to ________ energy. A. potential, kenetic B. kinetic, potential C. thermal, potential D. heat, thermal

90. ## Information and Software Technology

Hey guys just needed to clarify on some key points on Artificial Intelligence. What are the types of AI? I think it's weak and strong but i was confused whether its demons, agents, expert systems etc. Also what are some of the social and ethical

91. ## History

I have this one question that is giving me some trouble trying too figure out. Could one please help me with this one question. Before 1802, most immigrants came from ____________; after 1802, most immigrants came from ______________. My choices are: The

92. ## Math

3 pipes are used to fill apool with water .Individually they can fill that pool in 9hr ,6hr ,3hr .how many minutes will it take to fill the pool if all 3 pipes are used simultaneously?

93. ## Algebra

What is the maximum area of a rectangle area with a fixed perimeter of 80 ft?

94. ## calculus

A triangle ABC has sides of length AB = 3 inches and AC = 4 inches. Let t denote the angle at vertex A, and let s denote the length of the remaining side BC. If t increases at the rate of 2 radians per second, at what rate (in inches per second) does s

95. ## Chemistry

If 15.0ml of a 6.0M HCl solution is diluted to 75.00ml, what is the molarity of the diluted solution?

96. ## algebra

the edges of a rectangular box are 3, 4, and 5 inches. What is the maximal distance between pairs of corners?

97. ## finance

Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation and note the specific events as they might apply to the information from your chapter. You will use this data to form the basis

98. ## math

how do I simplify w^4.w.w^5

99. ## chemistry

Find the volume in liters. 6.5kg of a substance with a density of 7.96g/mL Im confused about how it would come out in liters.. if the mass is in kg and the density is in g/mL

100. ## Chemistry

How do I find how many grams of CH3COOH are present in cm^3 of vinegar? Also, how many moles of CH3COOH are present in 2.5 cm^3 of vinegar? Thanks!

101. ## chemistry

What would be the concentration of a solution made by dissolving 0.5 moles of KCl in 750ml liters of water?

102. ## social studies

Why is the radio important? How is it used in the present time? How does the radio make people's lives easier?

103. ## math

Express y=[4x-x^3]/[3x^2+2)^2 as a product and then differentiate. Simplify your answer using positive exponents. Help Please! ty

104. ## English

I'm finally starting to write my paper on Clara Bow, and my teacher wants us to write a five page defending who she was I guess. But my question is: what is there to defend??

105. ## chemistry

Could you produce a cell that contains a 1.0M solution of Fe2+ and Fe3+ ions?

106. ## math

(2x+3)/(3x-6) = (5x+3)/(5x - 9)

107. ## software

VPN and private network seems similar but what are the main difference between them?

as nezinau kur ka rasyti o man reikia padaryti purchases book

109. ## precalulus

y^2+4y-x+1=0 what is the vertex of this equation and the axis of symmetry for this parabola?

110. ## Statistics

The distribution of time to respond to an e-mail is uniform with a minimum value of 0 and a maximum value of 10 days. What is the probability of getting a response in less than four days?

111. ## cost accounting

prepare the necessary journal entry to close the overhead account if the balance is considered immaterial

112. ## Chemistry

How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

113. ## Chemistry

How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

114. ## social studies

why is Hillary Clinton important???

115. ## English question

Can someone tell me a little about Sir Thomas Moore? The guy from England? I have to write a report on him pretty soon. Thanks! Allyson

116. ## chemistry

what is a standard solution? and what is a function of an indicator in a titration?

117. ## algebra

(-6^2 + 2v + 4) - (6v^2 + 4)= Is the solution: 12v^2 + 2v?

118. ## accounting

kindly please can you help me to get the correct answer for this question below thanks a lot.. differentiate Accounting from Auditing and Bookkeeping

119. ## Math

Which term in the expansion of ((1/2x^3)-(x^5))^8 is a constant? THANKS!!

120. ## hydraulics

Specific recharge along the top boundary is 1 mm/day. Write equation for head along the boundary as function of conductivity and recharge variable. Is it h(head)=R(recharge)/K(conductivity)?

121. ## 7th social studies

when they say profitable crop. do they mean that they can use it s money or doe they mean its something they can srnd it across seas or both? Other than the fact that pocahontas was the daughter of pawahtan and that she marries john rolfe is there any

122. ## Chemistry

How many grams of CH3COOH are present in 2.5^3 of vinegar. Also, what is the formula needed to solve? Thanks!

123. ## History

How would you interpret this? "North America is Europe with its head down and its feet up." -Michel Chevalier, Society, Manners and Politics in the United States (1834)

124. ## Algebra

determine if the equation of the line f(x) = x + 1 a function using the Vertical Line Test?

125. ## precalculus

x=36y-3y^2-64 what is the vertex of this equation?

126. ## chemistry

If you dissolve 5.0g of NaCl in 3.0 liters of water, what is the concentration of the solution?

127. ## astrophysics

If the wavelength of Hydrogen is 21.10611405413 cm, what is the wavelength of oxygen in cm?

128. ## Chemistry

How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

129. ## english

"it gives them the benefits of having authority" Do i need to take out the word "of"

130. ## English

Hello! I am trying to formulate the following sentence correctly: 1. "I plan to continue my education on the graduate study program of the same university." Any better ideas?

131. ## economics

What advantages might a socialist system have in responding to the needs of people struck by an emergency situation like the earthquake that occurred in Haiti in January of 2010?

132. ## economics

When disasters hit an area, the cost of everything--food, water, housing, gas and so forth--seems to go up immediately. Explain why this phenomenon may be a good thing, using the laws of supply and demand

133. ## physics

What is the units for impact?

134. ## critical thinking

Can you help me define persuasive thinking?

135. ## Environmental Science

I need an apa format paper about "How does smoking affect the environment"?

136. ## math

what is the next two fractions and the pattern is here is the fraction 1,1/4,1/9,1/10,_,_

137. ## Chemistry

The Molarity of a solution that contains 50.0g BaF2 in 700.0ml solution is: A. 0.41 B. 0.29 C. 2.5

138. ## Algebra

Factor 2xsquared minus 5x minus 3.

139. ## Social Studies

What are some things that start with or have x and y in them that can be found in Sudan? I've looked EVERYWHERE. Except Sudan literally.

140. ## Science

What is a Wordsplash?

141. ## Stats

if a researcher were studying the effects of a teaching method on patient learning outcomes, how must he or she word the research question (different from hypothesis) to use the t-test for statistical differences? What type of data must he or she collect

142. ## geometry

IF A HYPOTENUSE HAS A RATIO OF 1;2 AND THE ALTITUDE IS SIX WHAT DO I DO TO SLOVE THIS PROMBLEM

143. ## management accounting

kindly please can you help me to get the correct answer for this question below thanks a lot.. differentiate Accounting from Auditing and Bookkeeping

145. ## Math 1428

How do you find the interval form of 6x=2

146. ## Chemistry

The oxidation state for solid iron is 0 True False

147. ## statistic

where to find the crime rate of US?

148. ## Calculus

i need help finding area under curve of:2y=sqrt(3x),y=4, and 2y+1x=4

149. ## math

What is the range,median ,and mode?

150. ## Algebra

In base 5, how many two digit numbers are there?

151. ## accounting management

prepare the investment-related entries on pert company's books for 2009

153. ## law

which types of sentence would be most approppiate where the main aims of sentencing are rehabilitation and reform

154. ## Science

What is the difference between a heat calorie and a food calorie?

155. ## Calculus 1

find the point on the graph of y=x^2 where the tangent line is parallel to the line 2x-y=2

156. ## chemistry

What is the concentraton of a solution made by dissolving 0.5 moles of solute in 9.0 liters of water?

157. ## math

how many animals die from deforestation in costa rica each year?

158. ## chemistry

what is a standard solution?

159. ## algebra

6x-30y=120

what method would be the best if i want to solve more than one ordinary differentials equations? or how would i attack this kind of problem? for example: dy/dt = (1-y)/(1+x+y) dx/dt = (y-x)/[2(1+x+y)] i just need a starting point cause i couldn't think of

161. ## Maths

(a display of a goods in a store has to be organized in layers so that the 7th layer , from the floor, consist of 28 items while the 18th layer must have 6 items.the number of items in the different layers forms an arithmetic sequence.) (1) give the

162. ## chemistry

what is the specific heat of silver if it takes 0.300 joules of enegry to raise 0.500 grams of silver from 25.0 C to 27.5 C?

163. ## math

i need help finding area under curve of:2y=sqrt(3x),y=4, and 2y+1x=4