# Questions Asked onApril 9, 2008

1. ## Physics

1)Which of the following statements is true about electric forces? A)electric forces cause objects to only attract each other. B)electric forces cause objects to only repel each other C)electric forces cause objects to repel or attract each other

2. ## Math

If a cat has 5 kittens, what is the probability that all 5 will be female?

3. ## social studies

what is the capital of Ghana??

4. ## science

Which family/group does the element neon belong to.

5. ## Physics

1)When two bodies are charged, the total charge before and after charging remains the same because of: A)quantization of charges B)conservation of charges C)law of induction D)coulomb's law I got C but im not sure. I couldn't find anything to state

6. ## Chemistry

I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the

7. ## chemistry

What is the orbital hybridization of the central atom S in SF4? 1) sp 2) sp3d 3) sp2 4) sp3d2 5) sp3

8. ## Physics

1)Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit? A)80.0 B)40.4 C)40.0 D)42.5 I got C 2)A 2.00

9. ## Physics repost

A current of 5.0 A flows for 20.0 minutes through a bulb and delivers 15000 J of electric energy to the bulb. What is the potential difference across the bulb? A)2.5 V B)4 V C)100 V D)100 V (book typo) I was told to do this: energy= V*I*time in seconds

10. ## math

A regular polygon has six axes of symmetry.what is name of this shape?

11. ## Physics

1)If a resistor is added to a parallel circuit, the equivalent resistance: A)increases B)decreases C)remains the same D)becomes zero I got B 2)A 10.0 resistor, 20.0 resistor, and 25.0 resistor are connected in series across a 110-V supply. Calculate the

This is what the paper is about. Choose a recent (within the last 2 years) article written for parents, teachers, or other family members on how to optimize the development of children (any age between conception through adolescence may be used) or written

13. ## Technology

Is the principal of the printing press still active in today's modern, high-tech society? Also, would our democratic institutions have been impossible to develop without the mass circulation of knowledge that the printing press enabled?

14. ## chemistry

25 mL of standardized 0.45 mol/L NaOH is titrated with 21 mL of 0.35 mol/L acetic acid. Calculate the pH of the solution

15. ## Physics repost

A 2.00 resistor, and a 12.0 resistor are connected in parallel across a 20.0-V battery. What is the current flowing through the 2.00 resistor? A)1.67 A B)1.40 A C)11.6 A D)10.0 A This is all I understand. Can you explain step by step and show how to get

16. ## chemistry

Calculate the pH of a 1.33 mol/L solution of HCN is the Ka value of HCN is 6.2x10^-12

17. ## math

evaluate the squared root of 13.2/0.33,do i work out the division first then find the square root??

18. ## Microeconomics

ok so i must have not payed attention in class when we talked about asymmetric costs in cournot duopoly's, so i am stuck on a homework problem. The problem reads as follows (*Note that my notation of c simply means Marginal Cost): Consider a Cournot

19. ## chemistry

19 mL of 0.50 mool/L NaOH which is standardized becomes titrated alongside 24 mL of 0.44 mol/L acetic acid. Determine the pH of the solution Please judge my work: Becasue NaOH and acetic acid react in a 1:1 ratio, initital moles of acetic acid =0.0019 L x

20. ## chemistry

An AgNO3 solution (44 mL/0.44 M) has been mixed with an NaCl solution (83 mL/1.35x 10^-2 M) a)Determine the ion product of the precipitate(potential precipitate) b) Would a precipitate be created? The Ksp of AgCl(s) proves to be 1.8 x 10^-10

21. ## chemistry

The correct interpretation of the equation below is: Fe3+(aq) + SCN–(aq) --> and

22. ## Human Services

I just want to make sure I am understanding the question correctly, and if I am on the right track with my answer. "How do human resource laws affect human service organizations?" Human resource laws affect an organization by ensuring that the organization

23. ## Physics

Is it possible to see a virtual image? a)no they don't exist b)yes the rays appear to emanate from a virtual image c)yes since almost everything we see is virtual because most things do not themselves give off light, but only reflect light coming from some

24. ## Physics repost

Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit? A)80.0 B)40.4 C)40.0 D)42.5 This is all I

25. ## English expression

1. He has long, straight, black hair. 2. He has straight,long, black hair. Which one is correct? I'd like to know the word order.

26. ## math: problem solving

During a storewide sale, a TV which usually sells for \$450 is on sale for \$360. A Stereo which usually sells for \$600 is on sale for \$480. What would be the sale price of a VCR which usually sells for \$500?

27. ## chemistry

ammonia, NH3, is a typical ingrediant in household cleaners. it is produced through a combination reaction involcing N2(g) and H2(g). if 12.0 mol of H2(g) react with excess N2(g), how many moles of ammonia are produced?

28. ## Gammar Check

Kate Chopin¡¦s stories are essentially about the struggle of freedom Kate Chopin was one of the most individual and adventurous nineteenth century American writers. Throughout Kate Chopin¡¦s stories, she gave the readers a woman¡¦s view of how

29. ## chemistry

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.510. If a trial's absorbance is measured to be 0.250 and its initial concentration of SCN– was 0.00050 M, the

30. ## Math

State the coordinates of two points on the following line x=3-8t y=4t For one point I got (3,0). In the back of the book it says (11, -4) for another point. How would I get that? b) r = (4,0) + t(0, 5) I got (4,0) for one point. In the back of the book it

31. ## GEORGIA STUDIES

ANALYZE THE IMPACT OF THE RISE OF THE TWO PARTY SYSTEM IN GEORGIA

32. ## chemistry

22 mL of 0.37 mol per litre acetic acid is titrated by way of a standardized 0.29 mol/L KOH solution. Calculate the pH of the solution after roughly 18 mL of the solution of KOH is added. The Ka of acetic acid proves to be 1.8 x 10^-5

33. ## Physics

1)In a series circuit, each circuit element has the same: A)current B)voltage C)capacitance D)resistance I got A 2)If a resistor is added to a series circuit, the equivalent resistance: A)increases B)decreases C)remains the same D)becomes zero I got A

34. ## english (grammar)

Just wondering if this sentence makes sense it sound weird to me for some reason. 2. Due to her extreme fear of public speaking, it was with much apprehension that she took the stage.

35. ## Genetics

Among 10,000 twin births, there were 4350 male pairs, 4150 female pairs and 1,500 male-female pairs. What are the number of monozygotic and dizygotic twins in this population? I know that the 1500 male female twins have to be dizygotic. How do I find out

36. ## Biology

sorry a few more questions why can DNA form fibres that allow it to seprate from RNA while RNA cant form such fibres? also, when treated with DNAse, I know DNA viscosity reduces because its cut up into smaller pieces. but on a graph of viscosity vs time, I

37. ## Physics

1)A 2.0-V battery is connected in a circuit with an ammeter and an unknown resistor, P. The current is observed to be 0.70 A. What would be the current in the circuit if a 12-V battery replaces the 2.0-V battery? A)4.2 A B)6.0 A C)8.4 A D)34 A I got A

The issue arising out of the Yunis case is the concern over the authority of the United States statues permitting extraterritorial jurisdiction and application of the United States constitution to aliens. Thus, Yunis argued that under general principles of

39. ## Chemistry

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.530. If a trial's absorbance is measured to be 0.150 and its initial concentration of SCN– was 0.00070 M, the

40. ## Physics

A object-spring system oscillates with an amplitude of 3.8 cm. If the spring constant is 210 N/m and object has a mass of 0.50 kg, find the maximum speed of the object. I already have the mechanical energy of the system. How do I find the maximum speed?

41. ## Physics

#1 If the inductance in the LC circuit is quadrupled the natural frequency of that circuit will a)increase to 4 times its original value b)increase to twice its original value c)decrease to 1/2 of its original value d)decrease to 1/4 of its original value

42. ## science

wehat is the difference between RNA and DNA that allows them to be separated?

43. ## physics

Indicate true or false in each of the following statements: 1. A static magnetic field can do work on a current carrying wire when the current in the wire is perpendicular to the field. 2. The time required for a charged particle to complete one cycle of a

44. ## Math

4^-x=(1/256) I think the answer or I guess the answer I have is: 4^-x=16^-2

Hi, This is my introduction paragraph for an essay I am writing. I am not really confident on my grammar and sentence stucture. I want to make sure the introduction sounds smooth and formal. I would like to have someone's feedback on it. Thanks! The topic

46. ## chemistry

A weak base that encompasses a concentration of 1.4 mol per litre has a percent ionization of 0.63%. Calculate the Kb of this weak base

Our professor provided us a content guide for this particular essay. Pasted below is one of his guidelines. 1. Describe the process you used for finding a web article suitable for this assignment. What advise would you give to a parent on finding an

48. ## chemistry

how many moles of CO2 can be produced from 15 moles of Fe2O3?

49. ## chemistry

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.550. If a trial's absorbance is measured to be 0.350 and its initial concentration of SCN– was 0.0010 M, the

50. ## chemistry

What amount is a mol?

51. ## Math (Trigonometry)

square root(a^2 -u^2) where a>0, let u=(a sinx) where -pi/2

52. ## Physics

1)Bulb P is rated 60 W, 110 V and bulb Q is rated 100 W, 110 V. Which of the bulbs has the higher resistance? A)they have the same B)cannot be determined C)bulb P D)bulb Q I got C. b/c of higher potential difference. 2)A battery of 10.0 V is connected

1. Explain in detail how to determine the value of the independent variable in a quadratic relation if the value of the dependent variable is known. Please check my answer - You would substitute the value for the dependent variable, then you would solve

54. ## chemistry

The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the

55. ## Math

Find the amount of money in the account at the end. \$1000.00, 4 years, 7% compounded semi-annually A=P(1+r/n)^nt r=0.07, t=4, P=\$1000.00, n=2 A=P(1+r/n)^nt A=\$1000.00(1+0.07/2)^2-4 A=\$1000(1.035)^8 A=\$1000(1.316809037) A=\$1,316.809037 My answer is:

56. ## chemistry

An equilibrium constant A. is small when the products are favored in the reaction. B. is the same, regardless of the initial concentrations of reactants. C. is calculated by dividing the concentration of the reactants by the concentration of the products.

57. ## Biology

What is the different between codominance, multiple allele, and polygenic patterns? Also, what about dihybrid cross patterns?

58. ## biology

4) How do inflammatory cells arrive at the inflamed site?

59. ## Algebra

I need to find the future population using the model P=42+20ln(11t+1) t= time in years I need to find when it will be 180. I have my work below, but I am stuck. The answer I get is not right, it will not add up to 180. Maybe I am wrong some where.

60. ## Math

How do I solve this equivalent equation? 5x +2 < 17 (again the

61. ## Math

How do I solve this? There are 171 seventh graders eating lunch. This number represents 45% of all of the seventh grades. How many 7th graders are there in the school? Would I take 171 x 45% and add them together or take 171 X .55 or??

62. ## Physics

1)A 15.0 resistor and a 20.0 resistor are connector in parallel. A 5.00 resistor is connected in series with this parallel arrangement. The resistors are connected across a 1.00(I think something else is suppose to be after that but its missing)10^2-V

63. ## Math

What would the median be of the following numbers? 10,12,13,15,17,19,24,25,26,55 Would it be 18?

64. ## Math (Shapes)

How can teaching children the 4 basic shapes (circle, triangle, square and rectangle) be benificial to a five year old's mathematical development? What is so important about knowing these four basic or simple shape? Just very curios to find out.. thanks

65. ## grammar (again)

As students, we are endued with many leniencies that aren’t given in the real world most of which are taken for granted.

66. ## social studies

What is the chief port of Kenya??

67. ## us history

what was Nixon's policies of engagement with foreign policy strategies used during the cold war?

68. ## chemistry

A solution containing 16.9 grams of a molecular compound dissolved in 250 grams of water has a freezing point of -0.744 degrees celcius. Find the molaltity of the solution. I have -0.744=-1.86*m*i. how do i find i. what is the gfm of the solute? I know

69. ## Trig

Solve in terms of sine and cosine: sec(x) csc(x)- sec(x) sin(x) so far I have: 1/cos(x) 1/sin(x) - 1/cos(x) sin(x) I am not sure where to go to from there. The book says the answer is cot(x) or cos(x)/sin(x) Thank you in advance.

70. ## Eglish/ grammar revise please

How can I make this sentence better? I am trying to paraphrase, but the last part of the sentence does not sound good. In the case of Yunis, the United States contended jurisdiction found in section 1203 of the Hostage Taking Statue and section 32 of the

71. ## Math

Another equivalent equation. -8w + 18 > -22 So, I subtract 18 from each side. make -8w + 18-18 > -22-18 -8W >-40 than w > 5? I don't leave either of the negatives right because negative divided by a negative is positive right?

72. ## Opinion..I need it for my paper

Question: Have the large salaries of professional athletes had a negative impact on the athletes or the sports? If yes give name of athlete Question 2: Do "beauty" contest serve any purpose in society? yes/no why/why not Thank you for giving your opinion

73. ## Math

if parts are marked up 20% before they are sold and the selling price for a seat cover is \$54 what was the original sale price. Do I take \$54 * 20% then subtract from \$54 or??

74. ## physics

1.A proton enters a 2.0 X 10^-2 T magnetic field with a speed of 5.8 X 10^4 m/s. What is the radius of the circular path it follows? formula?? 2.Electrons moving at 3.5 X 10^4 m/s pass through an electric field with an intensity of 5.6 X 10^3 N/C. How

75. ## Geometry

I need to find the perimeter of square that has a semicircle (located inside of the square) with a radius of 10 in and it appears that the square is 10 inches as well. I tried the equation 1/2*3.14*10= 15.7, 10 + 15.7 = 25.7 but I don't think it is correct

76. ## Chemistry

If 2moles of electrons are required to oxidize 1 mole of unknown, what is the molarity of the unknown solution Normality: 0.638 In this experiment: MnO4- is reduced to Mn2+

77. ## poetry

i have to write a palmistry poem about my lifeline. i have to say what my life is like now where it will take me away from and where it will take me too. any ideas?

78. ## Algebra

I am looking for the domain. f(x)=log(sub3)(5x+1) 5x+1

79. ## social studies

How has independence in India affected the opportunities for change?

80. ## chemistry

What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10

81. ## in text citation

Do I just put the person's name after the quote when I'm citing a specific person?

82. ## Math

Can someone tell me this is right? Look for the domain. f(x)=log(sub3)(5x+1) 5x+1

83. ## Algebra 1B

How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions? Can understanding how to work with one kind of problem help understand how to work another

84. ## Geometry

Hello, Can someone please tell me if I have the right answer? Thank You my answer: 1.59m If an area in the form of a circle is to be roped off by a rope 10m long, what will be the radius of this area? Round your answer to two decimal places.

85. ## chemistry

I'm supposed to find the pH of .1M HC2H3O2. since this is a weak acid, i used the ICE method with the given 1.8x10^-5 ka. and i got a pH of 4.4, but it was wrong....

86. ## chemistry

What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2

87. ## history

until germany's invasion of poland the democratic nations which had been victorious in world war I had observed all these separate aggressions and done little. the league of nations had all but collapsed in the wake of italy's invasion of ethipia. britain

88. ## social studies

sierra leone in west africa was founded as a home for whom?

89. ## English

Explain the metaphor of adam and eve sin?

90. ## math

if a car cost \$25,000 and after one year it is valued at \$21,250.What is the yearly depreciation.

91. ## chemistry

The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the

92. ## Science

Can someone please tell me what acid does to DNA? Ive looked everywhere and can't find anything simple enough to understand and need an answer really quick. thanks!

93. ## Math

State a direction vector with integer components. x = (1/3) + 2t, y = 3-(2/3)t State the integer components and name a point on the line with integer coordinates. r = (1/3, 1/2) + t(1/3, 1/4) Please explain.

94. ## algebra

To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat(in acres)polled. a. Write an equation using only one variable

95. ## math

what is the range of y=Arc sin x? I don't know what is the Arc stands for. Please help and explain. Thanks!

96. ## math

If the rental fee on a land line phone is \$45 per month and \$0 per month for a cell, and the cell cost 85 cents a minute and the land line cost 15 cents a minute, with calls for one month on both phones totaling 1 hr and 5 mins,show how the land line phone

97. ## Chemistry

If I was to test a set of unkowns in each of the following categories (located below). What would be my best method to figure out the unknowns I was given? --I was thinking a flow chart starting with high/low conductivity, but I'm not sure where to go from

98. ## Math

The sheet is titled Solving Inequalities. I need to solve this question by equivalent equations and show my steps. So, how do I solve 6x

99. ## Math

How do I solve this equivalent equation? 12b

100. ## science

does DNAse cleave DNA at a steady rate (linear relationship) or is it some sort of exponential thing?

101. ## physics 2

If you see a flash of lightnng and it is 3 sec. before you hear the clap, how far away is the storm?

102. ## precal log

4^(2x-5)=8^(x-3) Thanks

hancips

104. ## C++ Programming

#include #include #include int main ( ) { double noe, nod, dc1, dc2, dc3, dc4, t; cout > noe; nod = noe / 12; dc1 = .50 / 12; dc2 = .45 / 12; dc3 = .40 / 12; dc4 = .35 / 12; cout.setf(ios::fixed); cout.precision(3); if (nod >4) { goto 1; } if ( (nod >4) &&

105. ## FRENCH... AGAIN

Hey guys, I'm just wondering, how do you say fun facts in french? I really need some help. THNX!

106. ## math - another question

Determine which pairs of lines are parallel or perpendicular. x = 1-3t, y = 7+4t x = 2-4s, y = -3s L1: r = (1,7) + t(-3,4) L2: r = (2,-3) + t(-4,-3) Now how is that perpendicular? I know how to find it a vector of a line is parallel but I don't know how to

107. ## science

During cellular respiration, how many turns of the Krebs cycle are there for each molecule of pyruvate?

108. ## trig

What is the amplitude,phase shift and period of y=sin 2x? What is the amplitude, phase shift and period of y= sin2(x + 3.14/4)

109. ## social studies

What European country colonized Angola??

110. ## social studies

On what two oceans does South Africa border??

112. ## Grammar/English

May I have someone proofread this? It is for a business presentation I have for a class scheduled today at noon. Mohegan Sun may have entered a maturity stage given that there are strong challenges to marketing management. However, Mohegan Sun cycles back

113. ## poetry

any ideas to improve this poem? its a first draft so not very good. My life line, Is speeding down a roller coaster track, Loops and turns, Gliding over the city, Not a worry in the world. It takes me away from this small town. Where it is either extremely

114. ## Math Problem

Find equation of graph y=ln(x)3 right and then 7 up y=ln(x) y=7+ln(x^-4)answer

115. ## Math

Working with simple addition and multiplication of positive and negative numbers. Have completed 59 of 60 problems on a worksheet, I am stumped by one of them. For example Two numbers are given 30 and 13, You must find two number multiplied together equal

116. ## Philosophy

can anyone help me with some of the names that Confucius taught?

117. ## math

write 3x^2 +8x-25 in the form a(x+h)^2,where a,h and k are real numbers

In the United States vs. Fawaz Yunis, five men hijacked a Jordanian airliner. Among the passengers were two American citizens who were apparently not the target of the terrorist activity. Hijackers latter released the passengers and blew up the aircraft.

119. ## Chemistry

I am in an AP high school course and the teacher pulled a fast one on us by asking us what happens to K in an reversible equilibrium equation if the equation is flipped. K equations I am talking about go K=(Products)/(Reactants). The options were they take

120. ## chemistry

If the concentration of Pb^2+ is known to be roughly 2.1 x 10 to the power of -9 mol/L within a saturated solution of Pb(PO4)2, calculate the Ksp of Pb3(PO4)2?

121. ## chemistry

What is the maximum amount (in grams) of CO2 that can be obtained from 454g of Fe2O3?

122. ## math

can you show me how to solve linear systems step by step????? 2x+y=5 x-y=1

123. ## Math

cone radius= 3cm height=14cm what is the volume? how do you do this

124. ## Music

Bearing in mind the drama of Schubert's Erlking, suggest a story either from literature or from a movie that you think would make a successful Lied, with solo voice and piano. Brifly describe the story and suggest some effects that might be achieved in the

125. ## Printing Press

Is the internet simply an extension of the printing press in terms of mass circulating information?

126. ## social studies

what is the famous training center in Zimbabwe built by the Shona??

127. ## social studies

in south africa, european groups created and spoke a language called what?

128. ## chemistry

What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid acid: acetic acid base: ammonia

129. ## Gen 105

Objective of Exercise: Conduct research online regarding the strongest of your multiple intelligences. Find three Web sites which accurately describe that intelligence. If you identified more than one dominant intelligence, choose only one for your

130. ## math(need to know if i worked this right)

simplify x-3/3 - x-2/5 5(x-3) - 3(x-2)/15 5x-15 - 3x+6/15 is it :2x-21/15???

131. ## mATH

HOW do I solve this equivalent equation? 1/4x > 1 (and the > is underlined so I think that means greater than or less than maybe??)

132. ## chemistry

what is the pH of a 0.10 M HC2H3O2

133. ## eth125

Is this country still segregated today?

134. ## Geometry

Hello, Can you please tell me if I have the correct answer? Thank You my answer: 6m Find the diameter of a circle whose circumference is 18.85m.

135. ## eth125

Does the media help or hurt the relationship between Black and White America today?

136. ## physics

If a 264 Hz tone is emitted from a piano on a concert stage, how long will it be before a person in the balcony, 60 m away, hears the note?

137. ## math

Frank said that all equilateral triangles are similar. Veronica said that all right triangles are similar. who is correct- frank, veronica, both, or neither? explain your answer.

138. ## Math

State th coordinates of two points on the following line x=3-8t y=4t For one point I got (3,0). In the back of the book it says (11, -4) for another point. How would I get that? b) r = (4,0) + t(0, 5) I got (4,0) for one point. In the back of the book it

139. ## science

What is the difference between RNA and DNA that can be used to separate them from one another?

140. ## Philosophy

Write an informative 700-1050-word letter in the persona of one Eastern philosopher to one of his pupils. In the letter, describe your chosen philosopher's viewpoints concerning one of his philosophies. If needed, cite secondary sources according to APA

141. ## Maths

what's the square root of 780?

142. ## Math Problem

Find the equation for the graph in final state. y=e^x is 4 to right and 2 up y=e^x y=2+e^x-4 (answer) is this right?

143. ## literature

the ti is symbolized by

144. ## Algebra

Determine whether the number is a solution of x

145. ## Chemistry

Does a catalyst affect a reversible equation like the kind in my earlier post?

146. ## Math

I had this equivalent equation question from earlier and I'm not sure if I got the right answer. 1/4x > 1 (the > is underlined so it's greater than or equal to) is it x > 4 or x > 1/4 or ??

147. ## Ethics

How should we judge between the altruism and the egoism? What evidence or arguments might adjudicate between these two positions? How might we try to combine them?

148. ## Physics

an electric field is produced by a a)consant magnetic field b)changing magnetic field c)either a consant or changing magnetic field d)none of the above I choose b) because in a lab we once dealt with something similar to this question but I can't exactly

149. ## science

what is the pronunciation rebus for helium

In the Federal Court case United States vs. Fawaz Yunis, five men hijacked a Jordanian airliner. Among the passengers were two American citizens who were apparently not the target of the terrorist activity. Hijackers latter released the passengers and blew

151. ## History-WWI

Can anyone help me find out the size of the French trenches in World War 1, in feet or yards??

152. ## math

by simplifying,show that (2x-3)(2x+3)-(x-4)^2= 3x^2+8x-25

154. ## Biology

What does base do to DNA when it is added to it?

155. ## calc

how would you find the derivative of: f(x) = (x^2 + 1)^ (2-3x)

156. ## Math

I'm not sure, but I think the following equivalent equation would be answered N/A because an equation like this can't be zero? 2g+5>5 or can it be zero?

157. ## Math (Trig)

sorry, another I can't figure out Show that (1-cot^2x)/(tan^2x-1)=cot^2x I started by factoring both as difference of squares. Would I be better served by writing in terms of sine and cosine? Such as: [1-(cos^2x/sin^2x)]/[(sin^2x/cos^2x)-1]=(cos^2x/sin^2x)

158. ## english

i have to do an essay in class linking 3 texts AWAY, SEVEN YEARS IN TIBET and A TRACK WINDING BACK i have no idea how to do this

159. ## social studies

guinea has about how much of the worlds bauxite reserves (percentage)?

160. ## maths

f(x)= 2x+5/x-4 and g(x)=2x-3 1)Calculate the value of g(4) 2)fg(2) 3)g`1 (7)

161. ## Aed

help please i need three time management tips for teaching

162. ## math

What is the value of y if y=cos(Arc sin 1/2)? How can I solve this problem? Please help and explain! THANKS A LOT!