# Questions Asked onApril 9, 2010

1. ## physics

A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.4 m down a q = 29° incline. The sphere has a mass M = 3.7 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere?

2. ## Chemistry Help(Calorimetry)

I have a few questions to ask, since I was absent from school and I do not really understand the calorimetry problems. 1) When a 16.9 g sample of NaOH dissolves in 70.0 g of water in a calorimeter, the temperature rises from 22.4*C to 86.6*C. Calculate for

3. ## Calculus

A radar antenna is located on a ship that is 4km from a straight shore. It is rotating at 32rev/min. How fast does the radar beam sweep along the shore when the angle between the beam and the shortest distance to the shore is pi/4? Let's say that the

4. ## Science

A nonuniform beam 4.52 m long and weighing 1.03 kN makes an angle of 25 degrees below the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of 3.06 m farther down the beam and perpendicular to it

5. ## Pre-calculus

Find the lengths of the diagonals of a parallelogram with adjacent sides of 12cm and 13 cm if the angle between the sides is 50 degrees. The shorter diagonal is what in terms of cm? The longer diagonal is what in terms of cm?

6. ## Calculus

Evaluate the following limit: lim x->0 xcscx =limx->0 x/sinx Does it equal one because the reciprocal is 1/1=1?

7. ## college chem

PLEASE..Determine [OH-]of a solution that is 0.270 M in HCO3-...thanks

8. ## biology

When Darwin published his theory of evolution, he included all of the following ideas EXCEPT the idea that a. species changed slowly over time. b. some organisms become less suited to their environment then others. c. evolution occurs in spurts after major

9. ## Technology

23. ? List two examples of tools used in each of these major areas of processing: material, energy, and information processing. Ok, this wasn't so hard: 23. There are a few tools that are used in each of the three major types of processing: material,

10. ## Physics

A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.4 m down a q = 29° incline. The sphere has a mass M = 3.7 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere? --The

11. ## Calculus

Find the average or mean slope of 2x^3 - 6x^2 - 90x +3 on the interval [-6,10]? By the Mean Value Theorem, we know there exists at least one c in the open interval ( -6 , 10 ) such that f'( c) is equal to this mean slope. ::>> I already found the mean

12. ## Economics

If the government wanted to encourage a monopoly to produce the socially efficient quantity, should it use a per-unit tax or a per-unit subsidy? Explain how this tax or subsidy would achieve the socially efficient level or output. Among the various

13. ## Physics

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is

14. ## chemistry

How many kilojoules are needed to vaporize 3.00 liter of ethanol at 78 degree celcieus?

15. ## Physics

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is

16. ## Biology

Need help answering these questions-- How can genetic engineering be applied to everyday life? How can genetic altering benefit the society of today and future societies? What areas of life could this manipulation of genes cause? Thanks -MC

17. ## econ

Suppose you inherit \$10,000 and decide to use the money to start a lawn-care business. You purchase a truck and a mower for \$10,000 and start mowing lawns. Your annual cost for fuel and other supplies is \$2,000. Now, instead of investing your money in the

18. ## Geometry

A shopping center plot of land is in the shape of a parallelogram. Give two other facts about the plot or roads through it. I do not understand can you please explain? I know that A quadrilateral is a parallelogram if and only if it has two pairs of

19. ## History

On the issue of segregation, compare the views of Martin Luther King Jr. to those of Malcolm X.

20. ## English

1. A doctor is a person who takes care of sick peole. 2. A doctor is a person who is qualified in medicine and treats patients. 3. A doctor is a person whojo job is dealing with sick people. 4. A fashion designer is a person who designs clothes. 5. A

21. ## earth science

A fault is observed in a road cut, but there are no obvious rock units to correlate on either side of the fault to determine relative movement. How else might you determine or even infer whether the hanging wall has moved up or down relative to the

22. ## english

Comma Rule Exercise Instructions: Each of the following sentences is missing one or more comma(s). In the space provided beside each question, type the number of commas needed to correct each sentence. In addition, add the missing commas where they are

23. ## physics

If we push on a heavy crate to the right and it slidesw, what is the direction of friction on the crate?

24. ## accounting

I've solved most of the problem below, however I'm confused about the kind of information they need in the second part: Prepare the entry to allocate Snider's debit balance to Mantle and Mays. Prepare the entry to record the final distribution of cash.

25. ## Math

How is graphing a system of inequalities similar and different than that of equations?

26. ## Math

the ratio of the corresponding side lengths of two triangles is 5 to 3. the perimeter of the larger triangle is 48m. What is the perimeter of the smaller triangle?

27. ## Is anyone here a chemistry genuis?

The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium

28. ## Algebra 2

A car enters a interstate highway 15 mi north of the city. The car travels due north at an avrage speed of 62.5 mph. Write an equation to model the car's distance from the city after traveling for h hours.

29. ## art 101

What is a vanishing point?

30. ## English

Thank you very much for your last corrections. Can you please help me find better words to assess these other paragraph? Thank you very much in advance! 1) You have often strayed from the point. Actually, you have introduced a lot of themes you hadn’t

31. ## Math

Help pls! I just need to set the equations only, I can do the rest. The qu. Is: The sum of three numbers is 15. The sum of the first, the second, and twice the third is 20. The sum of the first, twice the second, and three times the third is 27. This is

32. ## Calculus

Find the x coordinate of the absolute maximum for the function f(x)= (2+6lnx) / x? x>0 xcoordinate of abs max is?

33. ## physics

The polar ice caps contain about 2.76E+19 kg of ice. This mass contributes negligibly to the moment of inertia of Earth because it is located at the poles, close to the axis of rotation. Estimate the change in the length of the day that would be expected

34. ## economics

Given that the monopolist demand curve is Qd=200-2P, TC=#900 and P= #55. What is the total profit?

35. ## Math

I'm having a hard time with graphing this problem. Could someone please help? Graphing has never been one of my strongest points. Graph the system of inequalities. x+3y is less than or equal to 9, 3x+y is less than or equal to 9, x is greater than or equal

36. ## English

Thank you very much for suggesting me such useful sites! I still have a few more sentences to prepare for tomorrow. I really hope you can have a look at them, too. (just say "yes" if it is possible) 1 ) Another feature of the epic poem is that it contains

37. ## Geography

Where on Earth? Asian Wonder Rice 36. The reports coming back from the field couldn't be better. Your new strain of rice is exceeding all of your expectations. You developed it, using the latest techniques. It grows faster, has a tougher skin, and is more

38. ## math

how can you use the inverse trigonometrical function on calculator to find the value of x in degree for which sinx = -0.4

value of outstanding bond changes whenever the going rate of interest changes in general short term interest rates are more volatile than long term interest rates. therefore short term bond prices are more sensitive to interest rate changes than are long

40. ## physics

A 0.145 kg block is released from rest from the top of a 51.7◦ frictionless incline. When it has fallen a vertical distance of 1.3 m, a 0.00794 kg bullet is fired into the block along a path parallel to the slope of the incline, and momentarily brings

41. ## Maath

how would you do this factoring by grouping? 2x^2+3x+6x+9

42. ## human growth and development

According to the Bayley Scales of Infant Development,most children who are ????months old use the past tense and walk up stairs using alternating feet A)6 months B)14-16 months C)26-28 months D)32-34months IS D CORRECT ANSWER?THANK YOU:))))

43. ## science

what is the thing a candle holds?

44. ## English

I am writing a paper on war and human nature and I was wondering if anyone knows where I can find out how many years in human history have been without war as I can't find anything. Thanks

45. ## com 220

Will you re check me Ms. Sue On com 220

46. ## HCA 220

HCA 220 WEEK 4 POWER POINT PHYSIOLOGY PRESENTATION CH. 3,4,&5

47. ## Chemistry

In a lab we did potentiometric titrations with a mixture of NaCl/KI and AgNO3. We plotted a titration curve and found the 2 endpoints which indicate where I is and where Cl is. We are looking to find the concentration of both of the halides present, and we

48. ## biology

What is the correct definition of a princible? a)A statement of a relationship between two or more abstractions. b)A simplified, symbolic representation of a theory or conceptual scheme. c)An abstract generalization that presents a systematic explanation

49. ## com 220

Identify the thesis statement in the article A Nation Apart. What strategies does the author use to formulate his argument? What makes the arguments so viable and compelling?

50. ## chemistry

Nitrogen gas with a pressure of 1.3 atm is passed through water at a temperature of 35 degrees celcius. What is the total pressure in the container?

51. ## UCI

A student is given a stock solution of 1.54E-04 M. How much stock solution is needed to make 100 mL of a 1.60E-05 M solution?

52. ## inb 205

5. How would you accomplish exposure netting with currencies to two countries that tend to go up and down together in value?

53. ## U.S. History

I was wondering if you could help me again. I just finished reading my chapter assignment on City Culture. My instructor is asking us to describe the social, economic, and political changes that played a role in changing city culture and how such changes

54. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

55. ## math - permutations with factorials

Over the past week, an airline pilot was n Vancouver three days, Calgary two days, Whitehorse one day, and Winnipeg two days. a) How many different itineraries could the pilot have had? b) If you knew that the two days in Calgary were consecutive (a

56. ## Calculus

Evaluate the following limit: lim x->(pi/2) [((pi/2)-(x))/cosx] May I please get a hint on how to start this question?

57. ## English

I have to create a mood poem so I am posting it onto here for you to suggest on what I could add to it to make it better and any other recommendations. I would like to hear your opinion on the poem I've established. If some words seem awkward, then I would

58. ## help

what is a nice word that rhyme with the word PRETTY

59. ## physics

An electron, moving with a speed, 6.8 km/s, enters a magnetic field that has a strength of 6.9 T. The magnetic force on the electron is perpendicular to the electron's velocity. Determine the radius of the resultant path of the electron.

60. ## pre calculus

sinx cscx-sin^(2)x=cos^(2)x

if a=2^3*3^7*5^3*11^4 and b=2^2*3^5*7^2*11*13,find the following.(leave your anwer written with exponents)a.GCD b.LCM

62. ## MATH

solve for x: 3x+4=7

63. ## history

why did president harry truman fired general douglas macarthur from his command of american forces in east asia during the cold war?

64. ## grammar

"The boys came and brought their hockey equipment" Is this sentence a compound, simple, complex, or compound-complex sentence?

65. ## math

how do you solve quadratic equation 7t-5t^2 = 0 on ti-83 graphic calculator

66. ## Math

Using factoring to solve each quadriatic equation. 2x^2-5x-3=0. This is what I have so far but don't know what to do from here. GCF:1 A:2 B:-5 C:-3 AC:-6 Goal is the find two numbers that add to -5 and multiply to -6 Factors of 6: 1,6 -2,3 (That's the one)

67. ## college physics

A certain 9-V battery measures 9.0 V with no load connected to it, but only 8.5 V when connected to a radio which draws 150 mA of current. What is the internal resistance of the battery?

68. ## ACCOUNTING

This is our next assignemt due. I do not know where to begin looking. Any ideas? The analysis of financial statements is critical for determining the financial health of any organization. Financial statement analysis, however, demands a thorough

861x46

70. ## Data Mangement

Rachel has 3 red, 5 blue, and one yellow towel. In how many ways can the towels be aranged if: a) One blue towel must be at each end of the row? b) All the blue towels must be side by side? c) The towel's of the same colour must be side by side?

71. ## math- Algebra 2

243^0.2x= 81x+5 how do i solve

72. ## math

Ten cards are selected without replacement from a standard 52 card deck that contains 13 clubs and 39 other cards. What is the probability that 4 of them are clubs?

73. ## Global History

How and why are hate groups protected by the constitution? What actions and speech do you think are not protected and why?

74. ## English

Hello! On Monday I am teaching English to 8th graders. There will be a little competition - the topic is the invention of the telephone and the clock.What can I give as a reward to the group that wins? (They will be asked 14 questions and the group that

75. ## psychology

whqt kind of psychology doees a person have who prefers to stay in closed rooms?

76. ## phys101

if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?

77. ## help:)

goverment by the nobility or those considered the best of society is: ___a.a theocracy ___b.a monarchy ___c.a pathiarchy ___d.an aristocracy what so u think?

78. ## economics

state the effects of unemployment on the (A)consumers expenditure (b)investment (c)Government expenditure (D)The church.

79. ## Plant Physiology

I'm confused about the oxygen evolving complex step in photosynthesis..From what I can understand so far, a P680 pigment molecule gets excited in PSII forming P680* which then loses an electron to form P680+ which is a strong oxidant. This then splits 2

80. ## math

can someone make a lattice table. i have to multiply 523*73 using lattice multiplication. i know how to do it and have the numbers plugged in but without the table.

81. ## Mass Communication Studies

I need to find two websites. One has to be a "for profit" and one not for profit organization. Can someone please steer me in the right direction? Thanks!

82. ## biology

Which of the following statements about sexual and asexual reproduction is FALSE? a. Genetic diversity occurs in sexual reproduction. b. Asexually reproducing organisms can repair their own DNA. c. There are no special reproductive cells in asexual

83. ## MATH LIKE ALWAYS

HOW MANY TIMES DOES THE GRAPH OF 2 2X -2X+3 INTERSECT THE X-AXIS?

84. ## history

what was the key U.S. government memorandum that militarized american foreign policy and indicated national faith in the economy's capacity to sustain large military expenditures ?

85. ## math

plot graph for y = 1.55x +30 and y= 2.75x where y (£)as a function of the total number of swim x, for the option( member and non-member)what are the approx. coordinates and and what does it represent.

86. ## Math

Dear Reiny! U r a life-saver! Is there a short cut to how can I set the question or change word problems into math one? It seems that this is my problem! Also, why did my way worked as well with different answers? My answers satisfied all equations as

87. ## apush

the failure of the new united nations to sustain a spirit of cooperation among the great powers was first demonstrated by: a. its inability to defend the jewish state of isreal that it had created b. its inability to control atomic energy and prevent the

88. ## social civics

the three basic types of government: mayor-council plan, the commission, and the manger-council plan. give at least one strength and one weakness for them . and size of city where most effective thanks alot i cannot not seem to find this in my book

89. ## Physics

A physics student of mass mm = 100 kg gets a summer job painting houses. On his first project, he builds a platform using large pine board with a mass of mb = 60 kg The board has an overall length of L = 8.5 meters and set on two 1 meter tall saw horses so

90. ## COMM215

revising sentences to remove these pronouns When a police officer fires his gun, he mustfill out a lot of paperwork. When a teacher writes an exam, they think about what aspects of students learning they want

91. ## ACCOUNTING/Bobpursley

Yes I do,but just wondering if there was a website or two that would be helpful. I am about 200 words shy of 750. I thought that adding additional information would bust things up a bit.

92. ## math

Use factoring to solve each equation: 49t^2=25 How would u do this? Thank You

94. ## chemistry

1. CO2 is passed through water at 100 c with a pressure of 854mm of Hg. what is pressure of CO2?

95. ## Ms Sue

Thank you very much. I just needed a second opinion on this assignment. I will look into the website you provided. Have a great weekend!

96. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

97. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

98. ## cultures

Proponent of exploitation

99. ## English

Thank you very much for helping me! Here are some more sentences I'd like you to check. Thank you very much! 1) In fighting against the dragon, Beowulf performed (can you use “did” too?) three actions. 2) First he, concealed by the barrow, raised his

100. ## phys101

if the stress strai graph is a straight line,how much does the bar srtetch when applied force is increased by 50000N?

101. ## thesis statement

hi there, I have given too much trouble to mind but could not get the answer as how to write down thesis statement on the " exercise is good for health that prevent the depression. thanks

102. ## Maths

(5-2*(6)^(1/2))^x+(5+2*(6)^(1/2))^x=98

103. ## math

3(X+1):X+1 10(x+1):x+1

104. ## algebra

can you help me solve this problem (16n)^1/2

105. ## English

I am making another poem, and I want to include old age home in there, but what's another name for that. I'm referring to the place where old people are sent off to by their kids.

106. ## Physics

With speed 75m/s and period 5.42ms, calculate the wavelength.

107. ## English

This is the other poem which I have created, with a positve mind:-) The last one was a Mood Poem; This one is a 'I do not understand' poem Here are the instructions for it: A. Begin the poem with "I do not understand." B. List three things you do not

108. ## economics

the value of the marginal propensity to consume is .8. If real gdpincreases by \$30 billionthis situation was the result of an increase in the aggregative expenditures schedule of?

Z2+Z-6=0

110. ## Anatomy and Physiology

What structure still works to pump out sodium and potassium in while resting to maintain the concentration gradient? a. cell body b. axons c. dendrites d. synapse All of the following are characteristic of the passive potassium channel except _____. a.

111. ## Com 220

Can someone tell me if my answers are right? Questions 7-15 Directions: In each of the sentences below, three portions are underlined and lettered. Read each sentence and decide whether any of the underlined parts contains a grammatical construction, a

112. ## Math 157

How many rectangles will fit about a point when tessellating the plane? How do you know?

113. ## Math

Thanks Damon! first I eliminated z by adding equation 1+2 (1st one *2) and got same as urs x+y= 10. Then, I eliminated z by adding equation 2+3 (2nd equation*3, and 3rd equation*2) and got x-y=6. x+y= 10 x-y=6 x=16 why is this wrong?

114. ## grammar

revising these sentences so the subject and verb agree with one another. One of my friends want to attend my graduation ceremony. Seven cats,twomonkeys, and adog plays in the store window.