# Questions Asked onFebruary 5, 2010

1. ## Physics

If 6.40 x 10^-19 joule of work is required to move a proton between two points A and B in an electric field, what is the potential difference between points A and B? Given: W = 6.40 x 10^-19

28. ## Physics

A rifle has a mass of 4.73 kg and it fires a bullet of mass 13.6 g at a muzzle speed of 829 m/s. What is the recoil speed of the rifle as the bullet leaves the gun barrel? So far, I've got (using p for momentum) p=p, so massXchange in velocity of the

29. ## Calculus

Find the area of the region which is bounded by the polar curves theta =pi and r=2theta 0

30. ## Math

Where would 3 1/2,1/3, and -0.5 go on a number line. ( Should the mixed number be turned into 7/2)

31. ## physics

An object with a net charge of 35 µC is placed in a uniform electric field of 643 N/C, directed vertically. What is the mass of the object if it floats in the electric field?

32. ## physics

The coefficient of static friction between the tires of a car and a horizontal road is 0.515. As the car brakes, what is the magnitude of the maximum acceleration of the car? Assume the net force on the car is the maximum static friction force.

33. ## Physics

Two 6.0 μF capacitors, two 2.2 kΩ resistors, and a 14.5 V source are connected in series. Starting from the uncharged state, how long does it take for the current to drop from its initial value to 1.40 mA

34. ## statistics

True or False; A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but not more than 15 class groups.

35. ## physics

A limb, which is 1m long, moves through an angle of 30 degrees in 0.5 seconds. a) What is the average angular velocity of: i) Its end? ii) A point 30 cm from the axis of rotation? b) What is the linear velocity of: i) Its end? ii) A point 30 cm from the

36. ## math10

Don works 40 hours a week at an hourly rate of $3.70. He averages$175 weekly in tips. What is his annual income?

37. ## programming

I am having trouble writing this program for java. can anybody help write a program that prints the letter X composed of asterisk.

38. ## physics

At 0°C sound travels through air at a speed of 330 m/s. If a sound wave is produced with a wavelength of 0.90 m, what is the wave’s frequency?

39. ## chemistry

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth's oceans, because of their high heat capacity, can absorb heat and therefore act to slow

40. ## Math

At a party, 55 handshakes took place as everyone shook hands with everyone else. How many people were at the party?

41. ## Chemistry

I am given the following: 0.20 M BaCl2 0.60 M H2SO4 1 M of HCl Assuming that you are working with 1 mL of barium chloride, calculate the theoretical number of grams of barium sulfate that should be produced. what is the limiting reactant? so far i have

A recipe calls for one-third cup of flour you have a quarter cup and a half measuring cup How could you measure one-third cup of flour?

43. ## data management grade 12

Cecile tosses 5 coins,one after the other. a) How many different outcomes are possible? b) In how many ways will the first coin turn up heads and the last coin turn up tails? c) In how many ways will the second third and fourth coins all turn up heads? d)

44. ## gr12 chem

Both propane and propene react with bromine. State two ways in which these two hydrocarbons can be distinguished in their reaction with bromine

45. ## Math

The numbers 1-10 are placed on cards, and the cards are put in a hat. If two cards are drawn, in order, without replacement, what is the probability that a. both are composite? b. one number is even and the other is odd? c. one number is even and the other

46. ## chemistry

what are indicators of strong intermolecular forces?

47. ## Calculus

Let f and g be the functions in the table below. x f(x) g(x) f '(x) g'(x) 1 3 2 4 6 2 1 3 5 7 3 2 1 7 9 (a) If F(x) = f(f(x)), find F '(2). (b) If G(x) = g(g(x)), find G '(1). I know I probably have to use the chain rule. But how?

48. ## Calculus

A circle C has center at the origin and radius 9. Another circle K has a diameter with one end at the origin and the other end at the point (0,17). The circles C and K intersect in two points. Let P be the point of intersection of C and K which lies in the

49. ## Science

Describe how the rotation of Earth is responsible for the movement of the stars. The rotation of earth is responsible for the movement of stars because as it rotates, objects around it rotate as well, such as planets, they appear to move through the stars

50. ## Science

Describe Earth's rotation in terms of its axis and length of time to rotate. The earth's axis slowly changes in the way it points. It changes direction over time. One effect of this precession, is the changing position of the North Celestial Pole. It takes

51. ## Interpersonal Communcations

Why is knowing your audience an important part of capturing and maintaining their attention? What is the impact of culture?

52. ## physics

A limb, which is 1m long, moves through an angle of 30 degrees in 0.5 seconds. a) What is the average angular velocity of: i) Its end? ii) A point 30 cm from the axis of rotation? b) What is the linear velocity of: i) Its end? ii) A point 30 cm from the

53. ## Physics

A hydrogen atom consists of a positively charged proton (nucleus) and a negatively charged electron. The following is correct due to Coulomb's law: a.The two particles repel each other b.The electron accelerates toward the proton c.The electron and proton

54. ## English

I really hope someone can check my sentences on Christmas holidays. Thank you very very much in advance! 1) I had planned to do a lot of things during my Christmas holidays but unfortunately I didn't get around to doing them all. ( and NOT I had no time to

55. ## math

What are the odds against throwing either a sum of 3 or 8 in rolling a pair of regular dice?

56. ## science

i have a quesion about an experiment of Separating a Mixture of Nails, Salt, Sand, Oil and water. 1) what components did you separate from the mixture first?

57. ## Biology

Just need to answer these last two questions in order to finish my lesson one test. Please help 37. Both animals and plant cells undergo cytokinesis after mitosis ends. How is the process and its outcome the same for both animals and plant cells? How is

58. ## Biology

Just need this checked: 'The cytoskeleton of eukaryotes serves many functions. One of these functions is served in prokaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the

59. ## chemistry

Based on the balanced equation C4H8S + 7O2 = 4CO2 + 4H2O + SO2 calculate the number of H2O molecules formed when 39 C4H8S molecules and 287 O2 molecules react?

60. ## science

A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000

61. ## grammar

The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so

62. ## Calculus

Find the area of the region which is bounded by the polar curves theta =pi and r=2theta 0

63. ## Physics

An electrostastic force of 20.0 newtons is exerted on a charge of 8.00 x 10^/2 C at point P in an electric field. The magnitude of the electric field strength at P is Given: Fe = 20 B q = 8.00 x 10^/2 C

64. ## Chemistry

Select all ionic compounds in which the number of anions present is three. ammonium sulfite ammonium perchlorate cadmium phosphate ammonium iodate ammonium sulfate barium bromide none How can u tell???

65. ## help plz

Which statement is NOT a requirement for an adequate definition? A}A definitinshould not be expressed in the negative B}A definition should be complex. C}A definition should use a noun, a verb to define a verb,etc. D}A definition should not give an opinion

66. ## physics

a 700 N man stands on a scale on the floor of an elevator. The scare records the force it exerts on whatever is on it. What is the scale reading if the elevator has an acceleration of 1.8 m/s squared up ? I need help with what formula (s) to use to get the

67. ## English

Why does Gene not have an interest in Brinker in the book A Separate Peace?

68. ## physics

a 700 N man stands on a scale on the floor of an elevator. The scare records the force it exerts on whatever is on it. What is the scale reading if the elevator has an acceleration of 1.8 m/s squared up ? I need help with what formula (s) to use to get the

69. ## History

Could someone please help me with this? Assume the role of an American journalist during World War II. Write three newspaper headlines that indicate the significance of the attack on Pearl Harbor. Each headline must report the same event from a different

70. ## Science

Your desk is classified as a solid because it has a definite shape and volume at _______________. 4th grade science lesson question under What are the states of matter section. Thanks!

how do you add a fraction with a different denominator

72. ## chemistry

I have 50mL of0.2M of potassium permanganate solution.What is the Molarity of KMnO4?

73. ## Medical Transcription

Which process involves the removal of thin layers of malignant growth and subsequent microscopic examination? A. Xenograft C. Electrodessication B. Mohs’ surgery D. Patch test

74. ## English

1. Best of all, I can sing Korean pop songs with my friends. 2. Most importantly, I can sing Korean pop song with my friends. (Are both the same in meaning?) 3. I fougnt with Don badly. 4. I fought with Don teribly. 5. I fought with Donheavily. 6. I fought

75. ## Math

Solve each literal equation for the indicated variable. 4x-5y=10 for y (the answer is y=4/5x-2) How do you solve this?

76. ## Lanuguage Arts

Our teacher gave us terrible instructions on a sentence we are supposed to write. 1) Choose 6 words that best describe who you are. 2)Write a sentence that contains 6 words that best describe you. She showed us an example on the SMART board it was up for

77. ## Math

Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses between 10.5 and 12 pounds in the first two months.

78. ## Mass Communication Studies

Please provide at least one example of an appealing news lead from either a corporation or an organizations news rooms. Tell why the lead is appealing.

79. ## Chemistry

When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 11.0 oz drink from 75 degree Fahrenheit to 37 degree Fahrenheit, if the heat capacity of the drink is 4.18 J/g degree celsius ? (Assume that the heat transfer is 100 %

80. ## Math

A circle C has center at the origin and radius 9. Another circle K has a diameter with one end at the origin and the other end at the point (0,17). The circles C and K intersect in two points. Let P be the point of intersection of C and K which lies in the

81. ## Maths

A circle C has center at the origin and radius 9. Another circle K has a diameter with one end at the origin and the other end at the point (0,17). The circles C and K intersect in two points. Let P be the point of intersection of C and K which lies in the

82. ## Environmental science

What are some examples of innovations that help reduce, cope with, or profit from global warming?

83. ## chemistry

A 43 kg sample of water absorbs 302 kJ of heat. If the water was initially at 29.8 degree celsius, what is its final temperature? sorry about before i forgot the units.

84. ## maths

Q.1. If b>a then the equation (x-a)(x-b)+1=0 has both roots in (a,b).But how?

85. ## Physics

A force of 4.3 x 10-15 N acts between an electric dipole with dipole moment 2.3 x 10-29 C m and an electron. How far away from the dipole is the electron located when it travels along the dipole axis?

86. ## math

What are the odds against getting a head and a tail in a single toss of two coins?

87. ## Science

If you were to look down on Earth from above the North Pole, in which direction would Earth appear to rotate? If you were to look down on Earth from above the North Pole, then earth would appear to rotate in a counter-clockwise direction. More info would

88. ## English

1. The best thing I've learned this year was something about myself. 2. The best thing I've learned this year is something about myself. (Do we have to use 'was' or 'is' in the sentences? Are both OK? What is the difference between them? Can we use the

124. ## maths

Can you please explain to me how to simplify the following fraction: 1/-1/4

125. ## environmental science

which is the simplest of all atoms? OH- H+ H3O+ H

126. ## accounting

What type of financial reports would you expect to review in an accounting department? How can the information contained within these reports help accountants and managers make good business decisions?

127. ## Chemistry

What would be the dominant anodic and cathodic reactions for iron exposed to aerated neutral salt water? Thank You for your help!

128. ## English 3

Why did Ratcliffe replace the orginal president?

What are the key planning factors for competitive success?

130. ## MATH

3X^4-81X NEED YOU TO SHOW HOW TO FACTOR STEP BY STEP WITHOUT GIVING ME THE ANSWER

131. ## Algebra

I am trying to figure out using the distributive property for 8(w-4)=-32

132. ## Mass Communication Studies

Please provide at least one example of an appealing news lead from either a corporation or an organizations news rooms. Tell why the lead is appealing.

133. ## accounting

what might happen if a human service agency did not determine the cost per output/cost per outcome?

134. ## Calculus II

Find the volume of the solid obtained by revolving the graph of $$y = 16 x\sqrt{4 - x^2}$$ over [0,2] about the y-axis.

135. ## math

Solve this equation: -9h - 6 + 12h + 40 = 22. can u please help i'm lost here.

136. ## SOCIAL STUDIES!!

How did the expansion of the U.S. affect Americans? What were the costs and benefits of expansion? Please Help!!

137. ## ethics in healthcare

What are some ways you can share principles from the ethical code that governs you with others? How can a professional be sure to comply with code provisions that impact him/her?

139. ## english

where do the punctuaion marks go? have you seen Brian Forbes's painting called The Olympic Runner asked Rosita.

140. ## arithmetic

Please can you tell me if the sum of this equation is correct? 19+2x5-11=18. Am I right to use BODMAS to solve it? Thanks for your help.

141. ## Cookery

hi I am having trouble with this question Why is it important to adjust the shelves to the correct position before lighting the oven ?

3(a+2)=4a

143. ## science

what is the outer layer of the hair shaft?

144. ## Physics

How is it that an electron accelerates towards the protons (nucleus) in a hydrogen atom? I had thought that the electric forces acting on each other is equal so they are in equilibrium.

145. ## math

A fraction is in simplest form when its numerator and denomenator only share _____?

146. ## Math

How many different license plates could be made if they have one or two letters followed by 1, 2, or 3 digits? Repetitions are allowed.

147. ## Biology

Please help me list some of the major differences in the process of mitosis as it occurs in higher plants and as it occurs animals.

149. ## earth science

what glaciers no longer exist in alaska?

150. ## mental health

i need to know the explanation of the miracle and scaling question in mental health

151. ## mental health

i need to provide an example of how my own values and beliefs impact on my work with individuals experiencing mental illness

152. ## English

Is Carol a male name or a female name?

153. ## Math 9

5 x 10^n = 5 Can someone please tell me the steps to solve for n? thank you!

154. ## Math

You have horses. I have horses. If I give you a horse, you will have half as mnay as me. If you give me a horse, I will have twice as many as you. How many horses do i have?

155. ## social policy

What does due process have to do with human services consumers, programs, and/or policies?

156. ## Food and Nutrition

I have to follow a diet that my teacher wants me to do for a challenge. Is smoked black forest ham considered a luncheon meat? The questions don't stop there. And are tortilla chips made with white, refined flour?

157. ## math

Delia works from 8:00 A.M. to 4:30 P.M. and has one hour each day for lunch. How much does she earn each week if she gets paid \$4.80 per hour

158. ## religions

im having to write a paper considering the interrelatedness of everything in cosmos as expressed in many indigenous religions. Then explain the importance of those relationships developed and what spiritual purpose they serve for indigenous people. please

159. ## Computer Applications-87

how is word used to create the componenet of a research paper

160. ## mathematics

How many games are played in a women's soccer conference if there are eight teams and all teams play each other twice?

162. ## Calculus

Let f(x) = ln(((2x–5) / (7x+4))^(1/2)). f'(x) = ...

163. ## Math-Distributive Property

Use the distributive property to simplify: 3(m-1)-(2m+1)How would you do this? This is all I have 3m-1-2m+1 I don't know if that right or what to do from there. Your help is greatly appreciated.

164. ## ENGLSIH

What criteria should you look at to evaluate information? a) Relevant, Authoritative, Historical b) Relevant, Reliable, Revisions c)Relevant, Reliable, Authoritative d)Relevant, Reliable, Magazines and Newspapers is it (B)

165. ## Psy220

Select 2 health problems discussed in the text and explain what role psychology

166. ## Physics

How is it that an electron accelerates towards the protons (nucleus) in a hydrogen atom? I had thought that the electric forces acting on each other is equal so they are in equilibrium.

167. ## Biology

The mitotic process provides a mechanism by which cells should be able to transfer their genomic contents from cell generation to cell generation without error or change. is this inviolate?

5/10-ã6

171. ## sawing

what length of material do you need for the jacket sleeves

172. ## sawing

as many alteration as possible should be made

5x-15=3y

174. ## Measurements

Is 2m 300mm the same as 230cm?