# Questions Asked onApril 17, 2010

1. ## chemistry

Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s) + O2(g) -> SO2(g) 2SO2(g) + O2(g) -> 2SO3(g) What volume of O2 (g) at 350 degrees Celsius and a pressure of 5.25 atm is needed to completely

2. ## College Physics

A 6.76 kg block is attached to a spring with spring constant 36.9 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 57 cm/s. What are The amplitude of the subsequent oscillations?

3. ## Physics

The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly named creature captures its prey by shooting a stream of water drops at an insect, either flying or at rest. The bug falls into

4. ## geometry

An isosceles triangle has two 10.0-inch sides and a 2w-inch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. Then Write an expression for the inscribed radius r in terms of the variable w , then

5. ## Programming JAVA

1. What is 9.9 + (11 % 8)? 2. Write one line that creates a variable named Pickles that can hold an integer and assign it the value of ten.

6. ## progamming JAVA

1.Write an algorithm, in English, to solve the following problem. Be sure to include pre- and post-conditions! 2.Problem: Solve X mod Y for all positive integers. Do so without using multiplication or division. 3.What is (7 / 3) + (4 % 5)?

7. ## physics

find the thermal stress in a 18 ft long steel beam that embedded in concrete. If the temperature rises by 40 degrees and the beam move a distance of .04 inches on each side. E=30*10^6 psi

asked by stacey graham
8. ## Chemistry

What is the molarity of a nitric acid solution prepared by diluting 250.0 mL of 6.00 M HNO3 to a total volume of 2.50 L?

9. ## Chemistry

Calculate the heat released when 10.0 g of water at 25.0°C cools to ice at 0.0°C. The specific heat of water is 1.00 cal/(g × °C); the heat of fusion is 80.0 cal/g; and the heat of vaporization is 540.0 cal/g.

10. ## plzzz help me with this questionnn

which word is a synonym of the word evolve? a.recession b.decline c.progress d.retrogression plzzzz some1 give me the answer:((

11. ## MAth

500 candidates appeared for a certain test. The mean scores was 59 and variance was 25. Assuming the distribution to be normal. find 1.% of candidates scoring 64 and above. 2. No. of candidates having score between 54 and 69. ( Given : For a s.n.v.z, the

12. ## drwis

-Which greek base means narrow? 1. sten- 2. platy- 3. mer- 4. xanth

13. ## math

If you wanted to code 94 distinct characters, such as those found on a coputer keyboard, how many dots would the system need?

14. ## chemistry

How much ml of H2So4 added to make 0.02M H2So4 solution to make volume 250ml?

15. ## Calculus

Use the given vector to find a vector b such that compab = 4. a = ‹4, 0, 1› ‹s, t, >

16. ## Electronics

A series circuit consists of a 12V source, a 470ohm resistor(R1), a 330ohm resistor(R2) and a diode. If the diode is reverse biased, what is the value of V(R1) and V(R2)?

(a-8)(a-9)

(2x-1)(x+2)

(2y+5)(y-3)

(p-7)(p+8)

(-7+p)(8+p)

(p^2-7)(p+8)

(5c-9)(5c+1)

24. ## college chemistry

. One possible use for the cooking fat left over after making french fries is to burn it as fuel. Formula (for cooking fat) = C51H88O6 Density = 0.94 g/ml ΔH°f = - 1310 kJ/mol. Write a balanced equation of the combustion of cooking fat (the products are

25. ## college-Financial Services(MBA)

The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

26. ## math

(n^2+3)(n+11)

27. ## Math

(3k^2+2)(k+5k^2)

28. ## Algebra

(6h-1)(4h^2+h+3)

29. ## Math

(9y^2+2)(y^2-y-1)

(8q-4)(6q^2+q+1)

31. ## chemistry

a fire extignuisher produces carbon dioxide by the reaction between sodium hydrocarbonate and sulfuric acid. if a fire extinguisher is desgined to hold 600.0g of sodium hydrocarbonate calculate : the mass of sulfuric acid required to react with sodium

32. ## chemistry

if 1.00M solution of NaOH was diluted enough would it eventually become acidic? showing calculations

33. ## Sociology (Topic;education)

hi.. am dnt a topic in sociology and the topic is Education.I find this topic quite complicated and difficult, there are so many types of system of education.. what is the Compensatory education,,can 1 also have some examples of this types of education so

34. ## English

Thank you very much for your corrections. I have some sentences I'd like you to check. Just say "yes" if they are correct. 1a) The first reform Bill passed in 1832 It is common practice to consider 1832 as the year in which the Victorian age started

35. ## meaning of Quotes

Some body please tell me the meaning of "early to bed, early to rise...helps a girl to go with other guys"

36. ## engineering

1)A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 2Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places. 2)as a

37. ## science

Q. 2. Describe a rocket propelled in 30 degrees north of east with a velocity of 5m/s?

38. ## Accounting

Hanson Corp uses a process costing system. Materials are added at the start of the process. Beginning inventory for January consisted of 1,900 units (40% complete for conversion) with a cost of \$15,000. 10,900 units were started and completed during

39. ## Health Administration

Hospital costs have grown following the growth of private and public insurance. Describe other factors that could account for some of the growth.

40. ## physics

A particle of mass m is released from rest at the top of a spherical dome of radius R. how far below the starting point will the particle leave the surface of the dome? how i should solve this?

What type(s) of information does the finance department need?

42. ## Calculus

If f(x) = (e^(x))sin(x) what is the 1000th derivative? Step are needed and the general rule/pattern

43. ## Physics

If a 5.40g bullet is fired horizontally into a suspended(hanging)10kg block of wood and causes the block, with bullet embedded, to move off with horizontal velocity of 0.30m/s, What is the impact velocity of the bullet?

44. ## Health Administration

According to the medical arms race hypothesis hospitals compete on the basis of: a. costs. b. costs and price. c. quality. d. (b) and (c) are correct.

45. ## Chemistry

A 30.00ml sample of 0.1234 M hypobromous acid (HBrO) is titrated with a 0.2555 M KOH solution. The Ka for HBrO is 2.5*10^-9 Calculate the pH of the titration mixture at the equivalence point.

46. ## college algebra

3r-8s=10 8r+3s=51

47. ## Chemistry

Ethanol is a fuel that can be made from corn. How many kJ of heat energy are released when 3.00 kg of ethanol are burned? C2H5OH(l) + 3O2(g) ¨ 2CO2(g) + 3H2O(g) H = -1406.8 kJ/mol

48. ## 9th grade

where do i put commas? where were you at 10 am on feburary 14 1992

49. ## statistics

Comparing Variations: 1. For the following exercise, complete the following: a. Find the mean, median, and range for each of the two data sets. b. Find the standard deviation using the rule of thumb for each of the data sets. c. Compare the two sets and

50. ## science

what is the flow of matter and energy??

51. ## Math

Can someone please help with this problem? Solve by the elimination method. 7r-9s= -58 9r+7s=74 I know that I need to multiply the first equation by 9 and the second equation by 7. The equations look like this: 63r-81s= -522 63r+49s=518 After this I get

52. ## business enterprise

discuss what will happen to the supply, demand. and price of the soft drink in the short-term

53. ## Geometry

Infinitely many different sectors can be cut from a circular piece of paper with a 12-cm radius, and any such sector can be fashioned into a paper cone with a 12-cm slant height. (a) Show that the volume of the cone produced by the 180-degree sector is

54. ## math

you want to find hot the length of a pendulum affects the time the pendulum takes to sing back forth. explain how you would model the situation

55. ## math

an alphabet book will have one letter on each page. eight pages will be printed on a single piece of paper.you fold the paper in half.then you fold it in half again and trim the edges. the eight pages appear in order. draw the layout for two sides of the

56. ## Geometry/math

The table at right shows measurements made on a circle with a one-meter radius. Each entry in the s-column is an arc length,and the adjacent entry in the c-column is the corresponding chord length, both in meters. Explain why c < s, and determine the range

57. ## sociology

You have been asked to address the importance of social institutions as they relate to the study of sociology. In 2–3 pages, address the following: How do studying social institutions help sociologists understand society? Provide 2 examples of prevalent

58. ## Health Adminstration

Analysts believe that although the medical arms race may have led to quality competition in the 1980s _____ has led to more price competition since the 1990s. a. selective contracting through managed care b. prospective payment c. economies of scale d.

59. ## Math

When I solved these two equation: 3x+4y=8 4x+3y=4 I found that neither of the two lines was perpendicular or parallel. Is this correct? Thanks.

Gurinder singh runs a small business that manufactures office furniture. His best selling products are office desks and chairs. Sales turnover has risen but profits have stayed constant. The business is also experiencing cash flow problems. a) Explain 2

61. ## Financial Matters

Are there any non-tangibles that could impact the value of a business? I was just curious.

62. ## Calculus

Using polar coordinates, evaluate the integral which gives the area which lies in the first quadrant between the circles x^2+y^2=64 and x^2 - 8x + y^2 = 0.

63. ## disease

a 4 year old caucasian female tired pale and a picky eater only eats pasta breads hot dogs and artificial fruit punch. I cannot find a blood disorder on her. Please help!

64. ## Geography

1. Which of the following is NOT one of the types of forests that grow in Northern Eurasia? a. mid-latitude deciduous forest b. mixed forest (deciduous and coniferous) c. coniferous forest d. chaparral D? 2. The rivers of Siberia, when not frozen, have

65. ## Chemistry

If you have to write the products of the chemical reaction Fe+O*2( asterisk means subscript),how would you know the charge of Fe in the compound FeO? If the charge is 2+, then the product would be FeO, but if the charge was 3+, then the product would be

66. ## college physics

A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A? What is the magnitude? What is the direction ° (counterclockwise from the +x-axis)?

67. ## Geography

28. What information would be the most helpful in drawing inferences about hwy certain countries in Southeast Asia have a large number of Muslims? a. knowing what countries in the region were colonized by France b. knowing what countries were ruled by

68. ## college physics

A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A? What is the magnitude? What is the direction ° (counterclockwise from the +x-axis)? d question is on exactly is on googl

69. ## Accounting

I need help with this problem. Could someone possibly explain to me how to prepare the journal entry for this problem? Prepare journal entries to record each of the following purchases transactions of a merchandising company. Show supporting calculations

70. ## infants

Is there a special name for a baby scale?

71. ## chemistry

You have 1.600g mixture of NaHCO3 and Na2CO3. You find that 11.60 ml of 2.00M HCl is needed to convert the sample completely to NaCl, H2O and CO2. NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2O (l) + CO2 (g) Na2CO3 (aq) +2HCl (aq) -> 2NaCl (aq) + H2) (l) + CO2

72. ## physics

A rubber ball filled with air has a diameter of 25.1 cm and a mass of 0.618 kg. What force is required to hold the ball in equilibrium immediately below the surface of water in a swimming pool? I tried using the equation B = density(fluid)volume(object)g B

73. ## Social Studies

What is the name of the only colony on the South American continent?

74. ## S.S

Could you drive from Wisconsin to Michigan without crossing another state? If yes, how? If no, why not?

75. ## America Literature

Why Emerson considered man is an analogy? And What is th relationship between human, god and nature in Emerson's point of view?

76. ## America Literature

Why is Whitman the father of America's poet in Emerson's point of view?

77. ## algerbra

Please help to change to an inequality the average speed was between 120 and 130 mph.

78. ## Geography

The direction from San Antonio, Texas to New Orleans, Louisiana is northeast right?

79. ## physics

A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

80. ## physics

A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

81. ## elemmanarty algebra

Divide xy to 3rd power -3xy to 2nd power +2x to 2nd power y by xy

82. ## physics

A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. (a) What type of mirror is it? (b) Describe the type of image that it makes of your face. (c) Calculate the required radius of

83. ## Math. Did I get the right answer?

Identify the properties ( 5 + 3) + 4 = ( 3 + 5) + 4 = Communitive property ( 3 × 2) × 8 = 3 × ( 2 × 8) = associative property

84. ## Math

Find simple intrest principal= \$300 Rate= 10% Time 3 and a half years

85. ## Chemistry

Estimate the value of the equilibrium constant at 550 K for each of the following reactions. 1) 2CO(g)+O2(g)--->2CO2(g) 2) 2H2S(g)--->2H2(g)+S2(g) i used the equation K=e^(delta G/RT) for the first problem and got K=1.40*10^-49 but it was wrong. Is there a

86. ## Math

Find total amount in compound interest account. \$9000 IS compounded semiannually at a rate of 11% for 20 years

87. ## CJS 240

what are any program-federal, state, or local that emplifies the concept of social structure, social process or social conflict theories? Or any references would be even better.

88. ## Finance

1. Following is the projected net income stream associated with the use of Zartek technology. (Note: this net income stream does not take into account that Zartek’s owners invested \$2,000 to develop Zartek in Year 0.) Globus Maximus Enterprises would

89. ## Math

Find the total amount in the compound intrest account. \$4000 is compounded annually at a rate of 11% for 3 years. (Round the nearest hundredths as needed)

90. ## Algebra

Equation: 2x/5-x/3=5 (2x/5 and x/3 is a fraction) I know that you are suppose to combine like terms, like x, but don't know what I need to do, since they are fractions. Help please.

91. ## math

How do you do this question? A shipment of 25 television sets contains three defective units. In how many ways can a vending company purchase four of these units and receive (a) all good units, (b) two good units, and (c) at least two good units.

92. ## History

How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe?

93. ## Social Studies

How do ethnic, racial, and religious hatred weaken society??

94. ## English

Thank you so much for helping me. I really hope you could check a few more sentences on the same subject. 1) She understands at last that her love for Heathcliff is not a romance. Actually, it is concerned with a breaking through beyond the self. 2) She

(-2)7=-2^7 -2^5 = -2*-2 = 4 * -2= -8 * -2 = 16 * -2 = -32

96. ## Algebra II

A math book said that the answer to (1 + 1/n) to the nth power was 2.5 when n=1. It seems like the wrong answer to me and that the answer should be 2. Please let me know if I am right or explain if I am wrong.

97. ## writing

What is a claim in an argument with argument is intended to support?

98. ## writing

a word or phrase- thus, therefore, that shows colculsion up ahead?

99. ## english writing

what is a word or phrase- thus,therefore that shows conclusion up a head?

100. ## english writing

what is a true non-subjective factual claim?

101. ## english writing

what claim is about a matter of fact?

102. ## geometry

3. For each of the following, tell how many noncongruent triangles PQR fit the given description, and find the size of angle Q. Make a separate diagram for each case. (a) p = 3, q = 5, angle P = 27 degrees (b) p = 8, q = 5, angle P = 57 degrees (c) p = 7,

103. ## algerbra

Translate to an inequality.Use the varible x the price of a baseball glove is at most \$35.5o

104. ## Math

Find total amount in the compound intrest account. \$2000 is compounded quarterly at a rate of 8% for 6 years. (Round to nearest Hundereths as needed)

105. ## trig

how do you use doubel-angle formulas to find sin, cos, and tan

106. ## math/geometry

4. The wheels on Devon’s bike have r-inch radii. After the front wheel picks up a tack, Devon rolls another d feet and stops. How far above the ground is the tack? Then,(Continuation) How many degrees does the wheel turn for each foot that it rolls?

107. ## college

What are somenotable similarities between Australian and North American cities?

108. ## Geometry

Consider again the sphere of radius 5 centered at (2, 3,−6). Describe the intersection of the sphere with the xz-plane. Write an equation (or equations) for this curve.

109. ## algerbra

The price of an amusment park ticket is greater than or equal to \$24.What is the inequality?Please help me to understand. Thanks

110. ## Trig

4. Asked to simplify the expression sin(180−è), Rory volunteered the following solution: sin(180−è) = sin 180−sin è, and, because sin 180 is zero, it follows that sin(180−è) is the same as −sin è. Is this answer correct? If not, what is a

111. ## chemistry

A chemist wishes to determine the rate of reaction of zinc with hydrochloric acid. The equation for the reaction is: Zn(s) + 2HCl(aq) ---> H2(g) + ZnCl2(aq) A piece of zinc is dropped into 1.00 L of 0.100 M HCl and the following data were obtained:

112. ## Trig

A. Find simpler, equivalent expressions for the following. Justify your answers. (a) sin(180 + è) (b) cos(180 + è) (c) tan(180 + è) B. Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin

113. ## Math

Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation. 20sqrt(x^12)

114. ## Math

Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation. 3sqrt(2)/ 5sqrt(2)

115. ## physics

A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod

asked by stacey graham
116. ## physics

A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the

asked by stacey graham
117. ## math

The length of a drawing of a tool is 3/8 of the length of the actual tool. If the length of the drawing of the tool is 6 inches, what is the length,in inches ofthe actual tool?

118. ## math

If x + 3/2 is an integer, then x must be what

119. ## physics

Find moment of Inertia Ix and Iy for the built up steel beam. The 1"x32"plate is centered on the wide flange web together with the 2"x16" plate. The steel beam is a W18x71 (Area=20.8in^2 diameter=18.47 tw=0.495 Ix= 1170in^4 Iy= 60.3in^4) To get better

asked by stacey graham
120. ## Physics

The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 305 grams, and it is released at an angle of 10° to the vertical. a) With what frequency does it vibrate? Assume SHM. (b) What is the pendulum bob's speed when it passes through the

121. ## physics

A space probe lands on the icy surface of Europa, a moon of Jupiter. It weighs a set of known masses. The results are shown below. Mass (kg) 0.1 0.2 0.3 0.4 0.5 Weight (N) 0.15 0.30 0.36 0.55 0.68 a) i) Plot a graph of this data on the axes given (done)

122. ## Math

If xy=7 and x-y=5 then x2 y-xy2=

123. ## math

__X+3___ is an integer, than X must be? 2

124. ## chemistry

What is the pH of the solution created by combining 2.20 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)?

125. ## chemistry(check my asnwer)

Why doesn't potassium ion K+ from KMnO4 appear in the following two unbalanced equations: MnO4– + C2O42– Mn2+ + CO2 MnO4– + Fe2+ Mn2+ + Fe3+ ? A. KMnO4 is not added to either reaction. B. The presence of K+ would result in a net positive charge in

126. ## chemistry

Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is titrated to correct for any reactive impurities in the solvent. For this experiment, the impurities would be reducing agents that would

127. ## philosophy

What makes pity the such a horrible emotion? How is it counter to Nietzsche conception of the good? Please I don't know where to start!!!!!

128. ## Check answer

Does (-2)^7 = -2^7

129. ## math

2-x>17 wold it be x

130. ## Math

Test for symmetry with respect to Q=pi/2 , the polar axis and the pole. r = 16 cos3Q Please explain. I do not know how to do this. Thank You!!

131. ## us history

what was the first big business in american history?

132. ## Geography

What Government imposed barriers to stop or hinder the export of automobiles?

133. ## Chemistry

How come the charges of H*2O*2 (asterisk means subscript), which is hydrogen peroxide,don't equal? The charge of hydrogen is 2, and the charge of O is 4. For an ionic compound you can figure out the formula by the charges(when the charges of the ions add

134. ## us history

the arid and difficult conditions of the landscape rather than new land laws passed to assist settlers were more important to shaping the emerging institutions of the american west in the later decades of the 19th century true or false?

135. ## Math

A point in polar coordinates is given, Find the corresponding rectangular coordinates for the point. (r,Q) = (4, 3pi/2) I know that you are suppose to use x=r cos Q and y=sin Q but I do not know how to plug this in.

136. ## us history

identify five reasons why european immigrants took flight from europe during the late 19th and early 20th centuries.

137. ## Chemistry

Consider the evaporation of methanol at 25.0 C: CH3OH(l)--->CH3OH(g) Delta G= 4.3 kJ Find Delta G at 25.0 C under the following nonstandard conditions: Pressure of CH3OH= 15.0 mmHg.

138. ## chemistry

Calculate the solubility (in g/L) of silver carbonate in water at 25°C if the Ksp for Ag2CO3 is 8.4 x 10^-12

139. ## Math

Find the composition. If f(x) = x^2 + 12 and g(x) = x^2 - 5, find (g*f)(x)

140. ## math

On a square gameboard that is divided into n rows of n squares each, k of these squares lie along the boundary of the gameboard. Which of the following is a possible value for k?

141. ## us history

discuss the applicative meaning of the 18th century theory known then as recapitulation

142. ## us history

identify the six groups or individuals fredrick jackson turner ommitted from his thesis regarding the frontier experience in american history....

143. ## Chemistry

Calculate the amount of energy in kilojoules needed to change 225 g of water ice at -10 C to steam at 125 C. The following constants may be useful: Cm(ice)=36.57 J/(mol*C) Cm(water)=75.40 J/(mol*C) Cm(steam)=36.04 J/(mol*C) Delta H(fus)=+6.01 kJ/mol Delta

144. ## Math

Solve the equation. log 6.44 + 3 log x - log x^2 = log 6.44 + 3

145. ## Math

Solve. The population of a particular country was 29 million in 1980; in 1989, it was 36 million. The exponential growth function A=29e^kt describes the population of this country t years after 1980. Use the fact that 9 years after 1980 the population

146. ## Chemistry

0.05 mole of HCL is added to a liter of buffer containing 0.04 mole of NH3 and 0.03 mole of NH4CL. What is the ph? Kb= 1.8X10^-5

147. ## Math

\$6550 is compounded semianually at a rate of 18% for 18 years. find the total amount in the compound interest account round to the hundredth as needed.

148. ## Calculus

Suppose that ∫∫_D f(x,y)dA=3 where D is the disk x^2+y^2

149. ## chem

Calculate the hydrogen ion concentration of a 3.55×10-4 M solution of the strong base KOH. Round your answer to 3 significant digits.

150. ## English-Poetry

What does this line mean? What does it describe? Believe that right now there is someone who beleives in the eonder that's you -By Wish Belkin I think that it seems to give readers the courage to seek out in the real world and show their unique personality

151. ## psychology

How do various behaviors of social dominance and courtship display affect the evolutionary process?

152. ## auguta tech

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than

153. ## physcs

A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective

154. ## stats

The probability of receiving a false positive on a mammogram is 7%. If the patient receives 10 mammograms in her lifetime what is the probability that none of the tests come back as a false positive?

155. ## Economic

Why is demand history irrelevant for the management of raw materials and work-in-process inventories?

In the sentence "Ships have sunk for no apparent reason", would the word obvious, general,or simple best fit the word apparent?

157. ## Trig

The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR. (d)

158. ## science

1. What are expansion joints, and why are they used?

In the sentence "Each autumn, some hurricanes track directly through the Bermuda Triangle." would definition 1.a path along which something travels 2.observe the progress of or 3. move over or along, fit for the word travel?

160. ## auguta tech

a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than 120= 0.34+0.135+0.0235+0.015+0.84 c. Percentage of scores less than 140 d. Percentage of scores less than 80 e. Relative frequency of scores less than 60 f.

161. ## Math

Use patterns or a linear equation to complete the table. P 2 88 8 10 ? Q 22 ? 110 110 330

162. ## math Did I do it right?

Use front-end estimation to find the value of the expression. I do not understand (without adjustment) 687 - 239 (without adjustment) is this right? 600 + 200= 800 + 126=926

163. ## english

how would i compare and contrast these two realist stories a good man is hard to find by flannery o' Connor and a pair of silk stockings by kate chopin

164. ## chemistry

what is the relationship between pH and H+ and how do i show examples?

165. ## chemistry

what is the relationship between reaction rate and shape of equilibrium graph in terms of concentration versus time?

166. ## Chemistry

If 2 g of salicylic acid is heated with 4 g of acetic anhydride, what is the theoretical yield ? C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O3

167. ## physics

Find Beta and Gamma for an electron that has a kinetic energy of 6.00 keV. â? gamma = KE/MoC^2 + 1 Beta = 1/gamma^2 + 1 gamma = 1.011723381 Beta = 1.9769592 I got gamma correct but my answer but im getting gamma incorrect can anyone explain what could be

168. ## physics

A stairwell is supported by two circular steel rods at one end. The other end supported above. The two steel rods are subjected to a total load of 12,800lbs. The rods are 24 ft long and E=30*10^6 psi. Select the rod based on the following specs. The rod

asked by stacey graham
169. ## physics

Find moment of Inertia Ix and Iy for the built up steel beam. The 1"x32"plate is centered on the wide flange web together with the 2"x16" plate. The steel beam is a W18x71 (Area=20.8in^2 diameter=18.47 tw=0.495 Ix= 1170in^4 Iy= 60.3in^4) To get better

asked by stacey graham
170. ## physics

A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the

asked by stacey graham
171. ## Math

The total amount being spent on personal calls in a month by employees of a company follows a normal distribution with a mean of \$900 and a standard deviation of \$50. Find the probability that in a randomly selected month the amount spent on personal calls

172. ## Math

Susan's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be rooms 12, 14, or 16. All of her friends but 4 are going to room 12, all but 4 are going to room 14, and all but 4 are

173. ## Mathematicas

Sam and Susie are twins. Sam has as many brothers as he has sisters. Suzie has at least 1 sister, and twice as many brothers as sisters. How many kids are in the family altogether?

174. ## algebra I

determine the minimum furnance output,b solve for a, that is solve b=27a with 2100 ft square flooring.

175. ## marketing

______________ is the process of naming broad product-markets and then segmenting these broad product-markets in order to select target markets and develop suitable marketing mixes

176. ## Chemistry

Calculate the pH of the titration of 100.00 mL of 0.200 M HOCI with 0.400 M KOH after 0, 25.00, 50.00, & 75.00 mL of KOH have been added. The Ka for HOCI is .000000035...Please Help!!!!

asked by Need Chem Help
177. ## chemistry

why are the flair lights at the air port yellow/orange instead of white? my teacher gave me until monday 18th to answer this and i think he expects a scientific answer but i have nothing