# Questions Asked onMarch 6, 2008

1. ## Physics EM

An ammeter is connected in series to a battery of voltage V_b and a resistor of unknown resistance R_u The ammeter reads a current I_0. Next, a resistor of unknown resistance R_r is connected in series to the ammeter, and the ammeter's reading drops to

2. ## Physics

Our sun rotates in a circular orbit about the center of the Milky Way galaxy. The radius of the orbit is 2.2 1020 m, and the angular speed of the sun is 1.2 10-15 rad/s. (a) What is the tangential speed of the sun? m/s (b) How long (in years) does it take

3. ## calculus

Use the linear approximation (1+x)^k=1+kx to find an approximation for the function f(x)=1/square root of (4+x) for values of x near zero.

4. ## Base-ten concept

What are the groupable models and the pregrouped/Trading models of base-ten concept? How are they different? I have been searching for a definition for these terms but my efforts deem unsuccessful. Could u asset me plzz.

5. ## Chem II - Equilibrium

A 2.00 mol sample of nitrogen dioxide was placed in an 80.0L vessel. At 200 degrees C, the nigrogen dioxide was 6.0% decomposed according to the equation: 2NO2 in equilibrium 2NO + O2 Calculate the value of Kc for this reaction at 200 degrees C. I have

Can someone please help me. I am suppose to describe the setting of The Wounded Wolf by Jean Craighead George and only have a three paragraph excerpt from the book. I can't describe it from that. Thanks

7. ## geometry

A parallelogram has the area of a 507 square centimeters, and its height is 3 times its base. What are the base and height?

A series of measurements are made in order to determine the molar mass of an unknown gas. First, a large flask is evacuated and found to weigh 134.567 g. It is then filled with the gas to a pressure of 735 torr at 31°C and reweighed; its mass is now

9. ## pre-calculus

find the cube roots of -216 answer in polar form and complex

10. ## Chem II

Would either of the following reactions go almost completely to product at equilibrium? a)2NO + 2H2 at equil N2 + 2H2O Kc = 6.5 x 10 113 b)COCl at equil CO + Cl Kc = 3.6 x 10 -16 How do you figure this out?

11. ## Physics

A cart of mass M1 = 4.00 kg and initial speed = 4.00 m/s collides head on with a second cart of mass M2 = 2.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. i keep getting the wrong answer please help me.I

12. ## algebra

Janelle wants to enlarge a square graph that she has made so that a side of the new graph will be 1 inch more than twice the original side s. What trinomial represents the area of the enlarged graph?

13. ## Trig

Find the exact value of: tan(-3pi).

14. ## Trig

Find the exact values of the six trigonometric functions 0 if the terminal side of 0 in standard position contains the points(-5,-4). (0 is not the number zero I don't know what its called) I have to find r first. r=sqrt x^2+y^2 r=sqrt -5^2+-4^2 r=sqrt 41

15. ## physics

An 8.00kg package in a mail-sorting room slides 2.00 m down a chute that is inclined at 53.0 degrees below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.400.Calculate the work done on the package by

16. ## Maths

In order to make some home improvements, a home owner spent \$40,000. He paid 20% as a down payment and financed the balance of the purchase with a 36-month fixed installment loan with an APR of 7.5%. Determine the home owner’s a) total finance charge and

17. ## Physics

An automatic drier spins wet clothes at an angular speed of 4.8 rad/s. Starting from rest, the drier reaches its operating speed with an average angular acceleration of 3.6 rad/s2. How long does it take the drier to come up to speed?

18. ## chemistry

how many liters of 0.100 M HCL would be required to react completely with 5.00 grams of calcium hydroxide?

19. ## physics

Television sets sometimes use a "rabbit-ears" antenna. A rabbit-ears antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-fifth of a wavelength of an electromagnetic wave whose frequency is 60.0 MHz. How long is each

20. ## Physics

The Earth has an electric field with magnitude roughly 100 N/C at its surface. A) Assuming there is a point charge at the earth's center creating this field, how much charge does the earth posses? Treat the earth as a sphere of radius 6.37 * 10^6 m. B)As

21. ## C programming

I'm suppose to write a program using functions and modules that accepts six names from the user and print it back to the screen. It should then ask the user which name they want deleted and print to the screen all the other names except the one deleted. It

22. ## Chemistry

I have to make a game based on the periodic table Here are the standards we could put in the game: Students know how to relate the position of an element in the periodic table for it's atomic number and mass Students know how to use the periodic table to

23. ## chemistry

name the following compounds and tell what type of compound they are (binary ionic, ternary ionic or binary molecular) FeBr3, b) CBr4 and c) Na2Cr2O7

24. ## Calculus 2

Tom and Joel are good runners, both able to run at a constant speed of 10 mph. Their amazing dog Trot can do even better, he runs at 20 mph. Starting from towns 60 miles apart, tom and joel run toward each other while Trot runs back and forth between them.

25. ## Trig

Rewrite 9pi/5 radians in degree measure. 9pi/5 =9pi/5(180/pi radians) =1620/5 =324 degrees

26. ## Probability

MY MAIN PROBLEM IS FIGURING OUT WHAT DISCRETE DISTRIBUTION TO USE, BERNOULLI, BINOMIAL, DISCRETE UNIFORM, GEOMETRIC NEGATIVE BINOMIAL, OR POISSON. Every time I choose one, it's the incorrect one. Is there some way I can easily find out which one to use.

27. ## English expression

1. Can you greet the person you meet for the first time in English? 2. What is the relationship between the people who greet each other? 3. Can you introduce your friend and answer the question in English? 4. Who and who are being introduced?

28. ## Technology

What are some key points historically in which we can say that science became reliant upon technology? We know that technology is a product of science, but at what point did science rely upon technology to make its investigations, and its claims to

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 1.48 m. Two of the spheres have a mass of 2.18 kg each. The third sphere (mass unknown) is released from rest. Considering only the

30. ## biology

Hello, I have a question. For one molecule of glucose are there six CO2 molecules released during cellular respiration? I'm looking at the kreb/ citric acid diagram and I'm not sure if it is four or six CO2 molecules being released. I'll appreciate your

31. ## Physical Science

Hello, Can some one please tell me if B is the correct answer? Thank You Which one of the following groups of chemical compounds is composed entirely of organic compounds? A. C2H4O, CH2O, CaSO4, C3H5(OH)3 B. C6H6, C2H5OH, C6H5CH3, C3H5(NO3)3 C. C2H2, CH4,

32. ## Biology

What type of cell would you expect to have more mitochondria, a skin cell, or a cardiac muscle cell? Explain why. Thank you all!

33. ## Physical Science

Hello, Do I have the right answer? my answer D Thank You, In the chemical equation Zn+2HCL -> ZnCI2 + H2, the reactants are A: zinc chloride and hydrogen B: zinf and hydrogen carbonate C: zinc chlorate and water D: zinc and hydrochloric acid

34. ## Math

What is the best way to study for a math test? Also, what is the best/most efficient way to write a math test? The format of my tests is usually basic questions, and then word problems. I'm always pressed for time at the end, so I have to scramble when

35. ## Physics

Suppose you walk toward a mmirror at 2 m/s. How fact do you and your image approach each other? Explain your reasoning.

36. ## English expression

e. I'm glad to meet you. 'glad to' is pronounced as a linking sound like one word. In these words, the d is a voiced sound, and the t is a voiceless sound. However the articulation points are the same. In this case, the d sound is dropped. Meet you is

37. ## Trig

Solve ABC if C=90 degrees, B=20 degrees, and b=10. Round measures of side to the nearest tenth and measures of angles to the nearest degree. So all I need to do for this problem is find A,a,c right? I know that A=70 b/c 90+20=110 and 180-110=70 but how do

38. ## biology

Compare and contrast the Central Nervous System and the Peripheral Nervous System. Thank you

39. ## social studies

what did delegates at the constitutional convention hope to accomplish

40. ## math

help i am failling math!!! worksheets and any more practice will kill me!! help

41. ## Trig

Find the exact value of: sin405. reference angle=225 sin225= -.707106781 = -.71

42. ## Maths

Use the compound interest formula A=p(1+r/n)nt to compute the total amount of the investment if \$7500 is invested at 9% compounded monthly for 4 years.

43. ## Math

Find the missing length for the right triangle 7 & 25

44. ## English expression

There are five menus on the right on the homepage. If you click the menus, you can get the information of the owner of the homepage. ------------------------ Are the expressions correct? Do we have to say 'buttons' instead of 'menus'?

45. ## math

I don't understand this problem at all. It involves finding the line of best fit. The question says, for a set of data, the line of best fit is y= -3x-4 and that r^2 is 0.22. What is the correlation coefficient? I don't know how to solve this.

46. ## English expression

e.g. Guess What? What is the full form of Guess What?

47. ## chemistry

Consider the following chemical equilibrium: SO3(g) --> SO2(g) + 1/2 O2(g) and Delta H = 98.9J a. Predict weather the forward or reverse reaction will occur when the equilibrium is disturbed by: i. adding oxygen gas ii. compressing the system at constant

48. ## Math(Solve the system)

So I guess I have to: Solve the system using any algebraic method. I'm not sure how so here is the problem I'm stuck on. 9x-5y=-30 x+2y=-3

50. ## Trig

Find one angle with positive measure and one angle with negative measure coterminal with -310 -310+360=50 -310-360=-670 so 50,-670

51. ## Social studies

Who was the last EMPEROR of Haiti?

52. ## math

I must simplify this equation and am having a hard time (5+2a+3a)-(a2+a-6) I also would like to know if you could help me with this onex(4x2+3x-5)-2(4-x2) this is also simplifing. I have a really hard time with these, thank you

53. ## Trig

Find the exact value of cot(-pi/6). I don't have a lot of work for this one all I have is 30 I guess that was suppose to be the reference angle. answer .58

54. ## SCIENCE

IF AN OBJECT IN A CIRCULAR MOTION BEGINS TO MOVE FASTER, WHAT HAPPENS TO THE CENTRIPETAL FORCE?

55. ## Geometry

What units in the metic system would you use to measure each of the following quanities? a. distance from los angeles to new york b your waist measurement c. width of a hat d. your height The united States emitted 19.5 million t of nitrogen oxides (NO)into

56. ## math

is 4x to the 3rd power a monomial?

57. ## Math

A tree casts a shadow that measures 5m. At the same time,a meter stick casts a shadow that is 0.4m long. How tall is the tree?

58. ## Biology

Give 2 reasons why the theoretical yield and actual yield of ATP per glucose molecule are different. Thanks!

59. ## Physics

You came across an egg that was a perfect sphere. You placed it in a tub of water and found that it displaced exactly 280,000 cubic centimetres. However, it was floating on the water, and only 72% of the surface area of the egg was below the water line.

60. ## English expression

In Western culture, a man is introduced to a woman and a young person is introduced to an elderly person. (Is this expressions grammatical?) e.g. Mina, this is Mike. Mike, this is Mina. In this words, who is being introduced to whom? Is Mina being

61. ## unknown

What are some particular industrial revolution technologies that aided in the growth of the cities, and pushed us away from agriculture?

62. ## english-essay

i have to write a critical analysis of "The Trial" by franz kafka. and i wanted to know what points i should cover in my essay. also how many paragraphs should my essay consist of.

63. ## English expression

A: What is your specialty? B: My specialty is taking pictures. B1: It is taking pictures. B2: Taking pictures is my specialty. B3: Taking pictures in it. ---------------------------------- Is this dialogue correct? Are all answers are acceptable?

64. ## Calculus

"I would like to integrate the following equation. It is a chemical rate equation (Arrhenius) where I have temperature & relative humidity as functions of time. Both are sinusoidal, reflecting a typical yearly climate": e^-(Integral(k*RH(t))dt), where

65. ## physics

how do you find the focal distance when a problem only gives you the object to screen distance of a projecter, and the object and image heights?

66. ## Math

A 2,000 calorie per day diet. Find decimal and fractional notation for the percent notation in each sentence. 1/2 cup of Campbells new england clam chowder provided 6% of the MDV of iron/

67. ## CHEMISTRY

If 0.500 liter of gas X weighs .0750 what is the molecular weight of X? (Volume measured at STP) THANKYOU

68. ## Health

What is the name of the structure above the cellular level?

69. ## Watersheds

What part of the enviornment manmade make up watersheds?

70. ## History

The Protestant Reformation challenged the Catholic Church's authority throughout Europe, what was the Catholic Church's response to restore order and consolidate their power throughout Europe and the rest of the World?

71. ## The History of Umbrellas

True or false? In England of the 1700s, men and women conformed to the same customs regarding umbrellas. I say false. Am I right?

72. ## Trig

Find the exact value of: sin60-cos60. do I just type sin60-cos60 in my calculator? = .37

73. ## pre-al

5(2x-3)+8=9 how do you solve this?

74. ## Math

Fast Freddy was driving his new red Porche down the road at 65 miles per hour when he suddenly saw Officer Friendly behind a bush holding a radar gun. Freddy quickly hit his breaks and slowed his car to 45 miles per hour within about 4 seconds. What was

75. ## psychology

Describe and evaluate two theories of moral development.

76. ## Physics

Iceland uses a voltage of 220v instead of of the US 110v. So you fly to Iceland with a box of bulbs ,that has been assorted with 30, 60 and 90 Watt light bulbs.U connect it through icelandic electrical socket. The fact that u 'll actually be using AC

77. ## math

I have a question about Exponential Growth. The problem is: You deposit \$350 in an account that pays 9.5% interest compounded yearly. What is the balance after 6 years? I don't know how to write the equation for this. Does anyone have an idea what the

Please check my answer thank you :) How are children hospitals paid ? (excluded from Medicare acute care PPS) My answer they are paid based on reasonable costs.

79. ## Algebra

Aki's Bicycle Design has determined that when x hundred bicycles are built, the average cost per bicycle =0.9x^2-1.7x+10.861, when C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle?

80. ## arithmetic

There is going to be a tournament to decide which of 8 football teams is the champion. On the first Saturday the 8 teams will play each other in 4 games. on the second saturday the winners of the first 4 games will play,and on the third saturday the

Please check my answer thanks :) True or False If an enrollee uses more services then first thought they would per the PPOM calculation then the plan would show a loss for that period I said True

82. ## math

How would I find the a for the equation y= a(x-h)^2+k. I'm looking at a graph, and I can solve for everything except for a. What is it supposed to be?

83. ## Math

Samantha's speedometer reads in kilometers per hour. If the legal speed limit is 55 mi/h how fast can she drive?

84. ## Physics

A high-voltage line of length 175 m is carrying a current of 105 A at a point on the earth where its magnetic field is 5 * 10^(-5) T and points North,34 degree from the vertical axis. A) what is the magnitude and direction of the force on the wire if the

85. ## Math

one last one, so sorry! thanks so much! how would I test the series for convergence or divergence? the series from n=1 to infinity of 1/(arctan(2n))

86. ## Physics

Your friend says that the wavelength of light waves is less in water than in air. Do you agree or disagree, and why?

87. ## science

You came across an egg that was a perfect sphere. You placed it in a tub of water and found that it displaced exactly 280,000 cubic centimetres. However, it was floating on the water, and only 72% of the surface area of the egg was below the water line.

Your friend tosses 3 coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win \$X. If not, you lose \$1. How large should X be in order for this to be a fair game?

89. ## spanish

What does complir anos mean?

90. ## Chem

what is an advantage and a disadvantage of using an oil shale?

91. ## ScIeNcE

How does nature recycle nutrients?

92. ## science

what exactly is a tropical coast?

93. ## Social Studies

What was it like in the day of a Knight during the MIddle Ages

94. ## Percents

The minimum daily values (MDVs)for certain foods are given. They are based on a 2,000 calorie per day diet. Find decimal and fractional notation for the percent notation in each sentence. 1 ounce of Tostitos provides 9% of the MDV of fat 1/2 cup of

95. ## math

Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win \$X. If not, you lose \$1. How large should X be in order for this to be a fair game?

96. ## arithmetic

There is going to be a tournament to decide which of 8 football teams is the champion. On the first Saturday the 8 teams will play each other in 4 games. on the second saturday the winners of the first 4 games will play,and on the third saturday the

97. ## Englsih

Can i have your opinion about taking the High School Exit Exam...do you want to take it or not and why?

98. ## Algebra

During a clothing sale, 1/4 of the store merchandise is reduced in price. Find the probablility that 3 of 5 randomly-selectled shirts have reduced prices.

99. ## Math Calculus

Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win \$X. If not, you lose \$1. How large should X be in order for this to be a fair game?

100. ## math-average

What is SUM AVERAGE? The professor mentioned that the exam average was 58 [out of 100] and sum average was 144

101. ## math

the recipe for pasta salad will serve 6 people, and there are 32 people attending the party. I know that when i added all the ingredients i had i got 11.24, and so then i multiplied by 5 1/3 which is 16/3... but i'm not sure if that is right considering

102. ## Biology

Can someone please explain the role of NAHD and FADH2 in cellular respiration, I don't understand, no matter how many diagrams/explanations I read. Thanks!

103. ## Math

A particle is moving at some constant speed. Use the following information to answer the following questions. s(t)=100/t©÷+12; t¡Ã0; see represents feet and t represents seconds a)Find the velocity and acceleration equations for this particle. b)When

104. ## Vocabulary

Unlike the colorful parasols of centuries ago, many modern umbrellas are a ________ black. a. unique b. traditional c. harmless d. boring The solution will be a synonym of "innocuous." The answer's c, right? Or would it be b?

105. ## religion

the sacred scriptures is more than a pile of old stories. Any websites you can give me to help with this?

106. ## Math

You have an unknown function that is monotone increasing for 1 < x < 5 and have the following information about the function values. With the clear understanding that there is no way to get an exact integral, how would you try and approximate the area

107. ## Human Services

Why are integrated information management systems important in human service organizations? Can you also give an example?

108. ## Analysis and Design

You are in the implementation phase of a project and your customer indicates they need a specific change to the project that changes the scope of the deliverables. How would you handle this request and why?

109. ## Calculus (improper integrals)

the integral from 0 to lnx of lnx/(x^1/2) thanks!

110. ## french

can you give me some useful italian words say if you where going o holiday?

111. ## math

Please help A school had 900 students at the start of a school year. If there is an enrollment increase of 7% by the beginning of the year, what is the new enrollment? A virus scanning program is checking every file for viruses. It has completed checking

112. ## Math

Jerry earned \$18,500 one year and then received a 10.5% raise. What is his new yearly salary? Yi Chen made a \$6,400 investment at the beginning of a year. By the end the year,the value of the investment had decreased by 8.2%. What was its value at the end

113. ## math

what is greater 34.481 or 34.479

114. ## calculus

The volume of a right circular cone is given by V=(1/3)3.14r^2*h, where r is the radius and h is the height. Find dV/dt if r=4, h=5, dr/dt=6, and dh/dt=-3 Please try to show as much work as possible

115. ## Math

Ms. Jordan has been given a loan of 2500 for 1 year. If the interst charged is \$275, what is the interest rate on the loan?

116. ## english

choose the sentence wich contains a idirect object

117. ## LAL

I need info about the book Homework by Margot Livesy

118. ## Humanities

I need the name of a 20th century figure whose work/artistic contributions can be classified in both the age of modernism and the age of pluralism

119. ## Vocabulary

No one would think of objecting to this practice, unless a(n)________ tip from an umbrella hit someone in the face. a. sticking-out b. sharp-pointed c. individual d. ever-present The solution is a synonym of "obtrusive." Is the answer a or b? I'm torn

120. ## Physical Science

Hello, In the following question can someone please tell me if I have the correct answer? Thank You My answer: B The Molecular Mass of Sodium Oxide (Na2O) is- A.38.98917 B.61.97894

121. ## Math

Estimate the number of pints in 49 3/4 cups?

122. ## JOBS

Does a salesperson use line graphs to show their sales in.. 6 months?

123. ## Trig

Find the area of ABC if A=56 degrees, b=20ft, and c=12ft. 1/2(20)(12)sin56 1/2(240)sin56 99.5

124. ## SCIENCE

How protein assists with immunity

125. ## math

How would I calculate exponential regression?

126. ## precalc

Solve sinx+cosx=0 Thanks!

127. ## history

What were the stategies of the axis powers during WW11 used to build up their countries? Also, Why did we use the atom bomb and what were the other options?

128. ## chemistry

is calcium carbonate a base? (whats its ph?)

129. ## calculus

find the conjugate on z times w if z=[3,120] and w=[-1,-15]

130. ## Biology: URGENT

Can someone please explain the role of NAHD and FADH2 in cellular respiration, I don't understand, no matter how many diagrams/explanations I read. Thanks!

131. ## Math Calculus

You have an unknown function that is monotone increasing for 1 < x < 5 and have the following information about the function values. With the clear understanding that there is no way to get an exact integral, how would you try and approximate the area

132. ## Social Studies

I am trying to find information on comparing the Western states with the Midwestern states in the following areas: Land/Climate, Resources/Economy, and People.

133. ## Math

How would I test this series for convergence of divergence? the series from n=0 to infinity of sin(2^(-n))

134. ## Math

[ 2[27-(29-38)] simplify ]

135. ## Vocabulary

The governor may have had an important message, but he delivered it rather ________. I am supposed to use a form of the word "prosaic." Is the missing form "prosaically"?

136. ## math

Help!!!!! I can't seem to bring my grades up!!! I study and anything! HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

137. ## math

Can someone please help me with my question? I don't understand how to find the line of best fit.

138. ## Math

Your friend tosses three coins and you roll a single die. If the number on the die you roll is less than or equal to the number of heads that your friend tosses, you win \$X. If not, you lose \$1. How large should X be in order for this to be a fair game?

139. ## CALC - area under a curve

You have an unknown function that is monotone increasing for 1

140. ## ss

in 1750 where did most colonist come to america from?

141. ## Math

how would I test this series for convergence of divergence? the series from n=0 to infinity of (n^2+1)/(n^3+1)

142. ## drwls

Thank you very much.

Some argue that translation gains orlosses are not important so long as they have not been realized and are only accounting entries. What is the other side of the argument?

144. ## math

3w+1=1 what does w =