# Questions Asked onNovember 17, 2012

1. ## Chemistry

Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)

2. ## Calculus [Implicit Differentiation]

If √x+√y=10 and y(16)=36, find y'(16) by implicit differentiation. If somebody could please help me by explaining how to solve this problem ! Thank you (:

The population of a town P(t)is modelled by the function P(t)=6t+110t+3000, where t is time in years. Note t=0 represents the years 2000.

4. ## Math

The diagram shows a solid metal cylinder. The cylinder has base radius 2x and height 9x. E cylinder is melted down and made into a sphere of radius r. Find the expression for r in terms of x.

5. ## physics

The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.34 m3. What is the weight of the heaviest bear that the ice can support without sinking completely

6. ## chemistry

Use standard enthalpies of formation to calculate ΔHrxn° for each reaction. (See the appendix. Enter your answer to the tenth place.) (a) 2 H2S(g) + 3 O2(g) 2 H2O(l) + 2 SO2(g) (b) N2O4(g) + 4 H2(g) N2(g) + 4 H2O(g) (c) SO2(g) + 1/2 O2(g) SO3(g) These

7. ## Physics

How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

8. ## Chemistry

Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.

9. ## Chemistry

Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

10. ## math

If two dice are rolled one time, find the probability of getting a sum less than 5.

The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

12. ## Physics

Vectors A and B are in the xy plane and their scalar product is 20.6 units.? If A makes a 27.8 angle with the x axis and has magnitude A= 14.8 units, and B has magnitude B= 29.0 units, what can you say about the direction of B?

13. ## Physics

A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 6.8 rad/s about an axis that is perpendicular to the left end of

14. ## Chemistry

A 0.08425 g sample of gas occupies 10.0-mL at 292.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound? Identify the geometry around each carbon atom. a)trigonal

15. ## College Math

Suppose the supply and demand for a certain videotape are given by: Supply: p=1/3q^2 Demand: p=-1/3q^2+48

16. ## Physics

An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.91 m/s, and its maximum acceleration is 6.20 m/s2. How much time elapses betwen an instant when the object's speed is

17. ## Physics

In Larry Niven’s science fiction novel Ringworld, a ring of material of radius 1.54 × 1011 m rotates about a star with a ro- tational speed of 1.38 × 106 m/s. The inhab- itants of this ring world experience a normal contact force ~n. Acting alone, this

18. ## Math

The price of a small cabin is \$40,000. The bank requires a 5% down payment. The buyer is offered two mortgage options: 20-year fixed at 8.5% or 30-year fixed at 8.5 %. Calculate the amount of interest paid for each option. How much does the buyer save in

19. ## Using windows

When saving a document or drawing, you determine the destination folder in which the file will be save by A. Making a selection in the save: box. B.Choosing a folder from the destination drop-down menu. C.Typing the folder name in the filename: box.

20. ## Physics

Joe wishes to hang a sign weighing 730 N so that cable A, attached to the store, makes a 30.0° angle, as shown below. Cable B is horizontal and attached to an adjoining building. What is the tension in cable B?

21. ## pre- algebra 1

Jose has 9 more comic books than Robin.Robin has 5 more comic books than Lee. If jose has 23 comic books,how many comic books dose Robin have? How many comic books dose Lee have?

22. ## math work

a dress orginally sold for \$120 is now being sold for \$96. by what percent was the prginal price of the dress discounted? please show work.

23. ## engineering

a bolt located 50mm from the center of an auto wheel is tightened by the couple shown for .10 seconds. determine the resulting angular velocity of the wheel if the wheel has a radius of gyration of 250 mm and a mass of 19 kilograms

There are 1,296 in.^2 in one square yard. Use a proportion to find out how many square yards of carpet it would take to cover the floor. I got 36 but I do not believe this is correct, for it is not a choice. Help, Im confused! The choices given are: 28 yd2

25. ## math

Explain why each survey question might lead to an erroneous conclusion 20. In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.

26. ## chem

combination reaction. mg2+o2

27. ## chemistry

How many grams of solute are required to prepare 500ml of 0.5M urea solution,CO(NH2)2?

28. ## chemistry

For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron transitions between n=2, n=3, and n=4.

29. ## science

Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 61.0

30. ## math

A bus stopped at Gulgong, 25% of the passengers got off the bus and 3 new passengers got on. At the next stop,3 quarter of the passengers got off the bus and 11 new passengers got on. The bus then had 17 passengers.How many passengers did the bus have just

31. ## chemistry

Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 61.0

32. ## chemistry

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.591 A˚. What is the maximum wavelength (in meters) of

33. ## chemistry

For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron transitions between n=2, n=3, and n=4.

34. ## pre-algebra

Use algebra tiles to find the difference. Let one white tile equal +1and one black tile equal -1.6-(-9) Thanks

35. ## intermediate accounting

goods in transit, purchased on credit and shipped FOB destination. \$10000 . were included in purchases but not in the ending inventory? how would you write this journal entry.( this company uses periodic inventory.

36. ## intermediate accounting

purchase of a machine for \$2000 was expensed. The machine has a four year life , no residual value , and straight line depreciation is used how to write journal entry?

37. ## chemistry

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.091 A˚. What is the maximum wavelength (in meters) of

38. ## statistics

Suppose x is a uniform random variable with c=10 and d=70. Find the probability that a randomly selected observation is between 13 and 65. a. 0.133 b. 0.867 c. 0.8 d. 0.5

39. ## Science URGENT!

I relly need help on these questions please help me :) 1. would karyotypes from the same family look similar? Explain. 2. Provide one reason as to why it would be useful to compare karyotypes of family members. 3.

40. ## Chemestry

If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

41. ## Chemistry

Titanium (Ti) can be produced by the reaction of metallic sodium (Na) with titanium tetrachloride vapor (TiCl4). The byproduct of this reaction is sodium chloride (NaCl). Calculate the amount of titanium produced (in kg) when a reactor is charged with 95.0

42. ## Chemestry

If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

43. ## Physics

How far apart must two protons be if the magnitude of the electrostatic force acting on either one due to the other is equal to the magnitude of the gravitaional force on a proton at the earth's surface?

44. ## Math

14.8cos(27.8)(29cos(x))+14.8sin(27.8)(29sin(x))=22 How do you solve for x?

45. ## maths

the coordinates of a particle(m/s) in a plane at a given time(t),is 2t,t squared,determine of motion

46. ## AP World

I need to find some documents for an e.c. assignment..can u dudes tell me where i can find one? Its gotta be about whether the pilgrimage to America is good or bad..it can be biased and stuff..yeah..i have to actually make a DBQ..not write an essay, but

47. ## Social studies

The question I have is about chesapeake bay and massy bisects bay. It is basically to see if demographic and economic changes have moved the Chesapeake bay and Massachusetts bay colonies closer together or further apart?

48. ## math

A mother wnats to invest \$6,000 for her son's future education. She invests a portion of the money in a bank certificate of deposit which earns 4% and the remaainder is a savings bond that earns 7%. If the total interest earned after one year is \$360.00,

49. ## math

How many athletic association membership cards 1 3/8 inches wide can be cut from stock 24 3/4 inches wide?

50. ## math

A chemist has 30%, 40 % and 80 % acid solutions. All three were to be mixed to make 4.00 x 102 L of 38% acid solution but a mistake was made and the amounts of 30% and 80 % were reversed. The result was 4.00 X 102 L of 65 % acid solution. What were the

51. ## Maths

3. Ohm’s law states that the current flowing in a circuit varies directly as the applied voltage and inversely as the resistance. In an experiment, the resistance was increased by triple the percentage by which the voltage was increased. A student

A farmer is planting a crop straight line with three feet of distance between each plant. If planted 23, what is the distance between the first and the last crop?

53. ## structural engineering

Fig P9 shows a drawbridge being rasied by a cable EI. The structure is a loaded truss consisting of a pinned assembly of members(links) joined at their ends designed to from a rigid structure. The four joint loadings shown result from the weight of the

54. ## science

Find the depth in an ocean at which a bubble of air have one forth the volume as it have on the surface of osean

55. ## chemistry

Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water

56. ## chemistry

Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation:

57. ## math

LPG (liquefied petroleum gas) is stored in highly insulated spherical vessels in most oil refineries. if the inside of one of these tanks is 11.4 ft, find the volume. report your answer to the nearest one-tenth of gal. use pie equal 3.14, and 1 cubic ft

58. ## Math

So the question is basically asking which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Lanai - 65 - Lanaihale - 3,370 Maui - 110 - Haleakala - 10,023 Hawaii - 190 - Mauna Kea - 13,796 Molokai - 40 - Kamakou - 4,961 A)

59. ## Algebra

Length of rectanngle is 1 cm more than width. If length of rectangle is doubled the area is increased by 30cm2. find dimensions of original rectangle.

60. ## psychology and the pursuit of happiness

Write a 700- to 900-word paper explaining the cultural and historical factors that contribute to this perspective. Contrast the traditional American perspective on happiness with the traditional Asian perspective on happiness. Format your paper consistent

61. ## Algebra 2..

Solve for x. 2^4x-1/2^3x+2=4

62. ## Physics

A force of 44.0 N accelerates a 5.0-kg block at 6.3 m/s2 along a horizontal surface. (a) How large is the frictional force? (b) What is the coefficient of friction?

63. ## science (physics) IV

anton plan that he can throw at a dart board from a distance of 2 meters and hit the 5 centimeters wide bull's eye if he throw the dart horizontally with a speed of 20 meters per second. he start the throw at the height as the top of bull's eye ,will anton

64. ## math

the width in cm of a rectangle is the same as the slope of the line 5x-6y=-14, and its length in cm is the same as the slope of the line that is perpendicular to the line 9x+4y=87. Find the perimeter of the rectangle.

65. ## MECHANICS

(b) A stone is thrust upwards and reaches a height of s= (73.5t-4.9t2) metres at the end of t seconds. Determine the highest point of the stone’s ascent. 

66. ## math

Yuki's age is four years more than one-fourth of Xena's age. Xena's age is 21 years and 6 months more than seven-eighths of Yuki's age. How old are Xena and Yuki? Thank you.

67. ## science

Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).

68. ## science

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.591 A˚. What is the maximum wavelength (in meters) of

69. ## intergrated science

Explain why ionic compounds are formed when a metal from the left side of the periodic table reacts with a nonmetal from the right side. Give two examples of such compounds

70. ## Physics

You need to move a 129-kg sofa to a different location in the room. It takes a force of 90 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?

71. ## math

a tank is made in the shape of a rectangular prism, measuring 12 cm by 16 cm by 10 cm.It is full of water.A small rectangular prism measuring 2 cm by 3 cm by 4 cm is dropped into the full tank. What is the amout of water which overflows?

72. ## SCIENCE URGENT!!!!

I had posted these questions before but no one helped me so ill repeat the questions: Please Help Me :) 1. would karyotypes from the same family look similar? Explain. 2. Provide one reason as to why it would be useful to compare karyotypes of family

73. ## math

An open steel tank measures 2m by 2.5m by 3m.It holds 7500 ml of water. What is the volume of steel,in cubic metres,making up the sides of the tank ?

74. ## Physics

Suppose a 47-N sled is resting on packed snow. The coefficient of kinetic friction is 0.14. If a person weighing 670 N sits on the sled, what force is needed to pull the sled across the snow at constant speed?

75. ## math

we had to go 30km through the city and then 30km through the country.Through the city we averaged 40km/h and through the country we averaged 60km/h.What was our average speed for the entire journey ?

76. ## physics

An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. The spring stretches by 0.210 m. The spring is then cut into two identical springs of 50 coils each. As the drawing shows, each spring is attached between the

77. ## math

there are 3 different ways of travelling from A to B and 5 different ways of travelling from B to C. How many different ways are there of travelling from A to C through B ?

78. ## chemistry

the temperature of 50.0g of water changes from 28.5°C to 26.9°C when 1.00g of ammonium bromide, NH4br(s), dissolves. What is the molar enthalpy of solution for this compound?

79. ## math

A 3 cm cube is painted on all its faces.It is then cut into 1 cm cubes. How many cubes will have paint on exactly 2 faces ?

80. ## Physics

A 170-N box is placed on an inclined plane that makes a 35.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.

81. ## chemistry

For the new compound ICl2F+2: Calculate the maximum wavelength of electromagnetic radiation that is capable of breaking the weakest bond. Express your answer in meters. Bond energies (kJ/mol) are: I-I (150) F-F (160) Cl-Cl (240) unanswered

82. ## Pre- Algebra 1

Graph the solutions of the inequality on a number line. c

83. ## Physics

You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

84. ## Physics

A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?

85. ## pre- algebra 1

Solve the inequality. 42

86. ## algebra

In an assembly line of a factory, which produces networking switching hubs, two robots are utilized. The first one (A) is able to produce 40 microchips per hour, whereas the second one (B) produces 30 microchips per hour. For a total production of 400

87. ## Physics

A 225-kg crate is pushed horizontally with a force of 690 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

88. ## math

what number is 100 times less than 600

89. ## math

One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

90. ## pre- algebra 1

Jose has 9 more comic books than Robin.Robin has 5 more comic books than Lee. If jose has 23 comic books,how many comic books dose Robin have? How many comic books dose Lee have?

91. ## Biology

Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

92. ## pre-algebra

atoms contain charged particles called protons and electrons. each proton has a charge of +1, and each electron has a charge of -1. A sulfur ion has 16 protons and 18 electrons. find the net charge. Thank-You

93. ## posibility

One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

94. ## math

Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered that, on any given weekday 70 percent of the customer sales amount to more than \$ 100. That is any given sale on such a day has

95. ## math

P=\$1000 r=7% t=8 compounded annually

96. ## Physics

A circular disk of radius 30 cm is rotating with an angular velocity of 2 radians / s. What is the tangential velocity of a point on the rim of the disk? What is its centripetal acceleration?

97. ## math

Construct a frequency polygon distribution using the class limits shown below. 80, 99, 77, 67, 93, 70, 76, 86, 79, 71

98. ## Algerbra 2

find the possible roots for: 3x^3-6x^2+11x-6=0

99. ## Math

A sporting goods store paid \$576for a shipment of 8 cartons of tennis balls. There are 12 cans of tennis balls in each carton , with 3 tennis balls in each can. How much did the store pay for each can of tennis balls?

100. ## Brenau University

To: From: Date: Subject: Observation Methodology: A. Description of internal control: (What did you observe?) B. Objective of internal control: (Why was the control implemented? There may be more than one reason.) C. Tie to accounting records: (What was

101. ## Math

A petting zoo has 5 lambs 11 rabbits 4 goats and 4 piglets. Find the ratio of goats to the total number of animals. THen explain its meaning 1/6? 1 goat for every 6 animals

102. ## English

Hello! Any interesting ideas on how to present new vocabulary? The topic is smoking. Some of the words are:addicted,to promise,to give up and so on. There are 10 unknown words. What to do? :/ There are 22 students (17 years old) and they are learning

103. ## physics ap

Sir Lost-a-Lot dons his armor and bursts out of the castle on his trusty steed Tripper in his quest to rescue fair damsels from drag- ons. Unfortunately his valiant aide Doubtless lowered the drawbridge too far and finally stopped it 30 below the

104. ## Biology

Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

105. ## ap physics b

A uniform ladder 8.09 m long and weighing 201.0 N rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.600, and the ladder makes a 46.0 angle with the ground. How far up the ladder can an 834.0N person

106. ## math

y=x/4+4 x=21.5+7y/8

107. ## intermediate microeconomics

why is modelling useful, despite being a simplified version of reality? my answer: answer: an economic model attempts to describe every aspect of reality. a models power stems from the elimination of irrelevant detail which allows the economist to focus on

108. ## physics

A 80kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the .43kg ball at the peak of his jump, when he is 17.2 inches off the ground. He hits the ground 1.61 inches away from where he leapt. If the

109. ## Chemistry Help

At room temperature, the surface tension of water is 72.0 mJ·m^–2. What is the energy required to change a spherical drop of water with a diameter of 1.80 mm to three smaller spherical drops of equal size? The surface area of a sphere of radius r is

110. ## Physics

You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

111. ## Physics

A 225-kg crate is pushed horizontally with a force of 690 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

112. ## chemistry

what are the three pure liquids produced by chemical reactions

113. ## chemistry

What volume will a mixture of 5.00mol of He and 0.800 mol of CO2 occupy at STP?

114. ## statistics

The average amount of time people spend on facebook each day is 71 minutes, with a standard deviation of 4.7 minutes. Are you more likely to select a random person that spends less than 68 minutes per day, or a group of 35 people that spend on average less

Damon had answer, but i just want to see if you'll explain it differently... The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

116. ## reading help me pls :(

1. What does the Wool Pooh represent to Kenny? (1 point)a nightmare death bullies fear 3. Which two characters engage in a power struggle in the story? (1 point)Rufus and Larry Dunn Rufus and Cody Byron and Momma Joey and Dad 4. Why is Kenny convinced, at

117. ## health help me

1. Starches and sugars that provide energy (1 point)kidneys enzymes carbohydrates vitamins 2. The system that removes waste from the body and controls the body's water levels (1 point)excretory digestive system liver kidneys 3. Organs that remove waste

118. ## Chem

. Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution. B. Discuss at least three

119. ## Physics 1

A shot-putter puts a shot (weight = 71.3 N) that leaves his hand at distance of 1.62 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.08 m above the ground. Include the correct sign for work. J

120. ## history

need help with a poem on the new frontier and the great society

121. ## Physics

A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The

122. ## Psychology

the spillover effect is best explained in terms of the?

123. ## physics

Two radar stations A and B, are separated by horizontal distance of (a=500 metres), they both track the position of a plane C by recording angles (alpha), and (beta) at 1 second intervals. time (sec) 9 10 11 the angle A(alpha) 54.80 54.06 53.34 the angle B

124. ## social studies

according to the preamble of the constitution, give at least three reasons why the new constitution is being established?

125. ## math

You rent a car for one day. Your total bill is 60 dollars. You estimate your mileage to be about 100 miles does the bill seem reasonable? Explain.Exactly how many miles did you drive?

126. ## Math

What are the prime numbers for 108?

127. ## math

in the auditorium there are 24 rows of seats. the first second rows have 8 chairs and the third and fourth rows have 10 chairs.if this pattern continues.how many chairs are in the auditorium?

128. ## Math OMG

what is 3/5 of 65?

129. ## science/math

width of a normal sheet of paper is 8.5inches. Convert this length to kilometers

130. ## math

One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It

131. ## Physics

You are driving a 2570.0-kg car at a constant speed of 14.0 m/s along a wet, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. The car's wheels lock, the tires begin skidding, and the car slides

132. ## math

how to work out 3.94/1000

133. ## math hw

steven bought four rare books that cost \$130, \$120, \$80 and \$75 respectivily. if he paid 1/3 of the total cost immediatly and the remainder in three equal payments, how much was each of the equal payments? please show work.

134. ## Math

Find the slope of the tangent line to the curve 0x^2−2xy+2y^3=10 at point (-4,1) Help please? Thanks in advance

135. ## Physics 1

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the

136. ## Physics

A 1.60 102-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What should be the magnitude of , so that the net work done by it and the kinetic

137. ## Math

Jayson has 789 cubes hammy had 890 how much in all

138. ## writing ms.sue

For my pilgrims essay it said that we needed an example with our reasoning. my reasoning #1: One reason why you should not eat us is that we have a disease in us called bird flu that could kill you. what is an example to go with it?

139. ## I.T

Please for 10 computer lab rules.

140. ## math

Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered that, on any given weekday 70 percent of the customer sales amount to more than \$ 100. That is any given sale on such a day has

141. ## Math

A vertical tower is supported by guy wires anchored at a point on the ground. The longer wire is attached to the top of the tower and makes an angle of 53 with the ground. The shorter wire makes an angle of 21 with the ground. The shorter wire is 80 ft.

142. ## Physics (maybe it's just math)

A sphere of copper is subjected to 89.7 MPa of pressure. The bulk modulus is 130 GPa. a) By what fraction does the volume of the sphere change? b) By what fraction does the radius of the sphere change? for a) I have dV/V = 0.00069 - this is correct. for b)

143. ## Stats

Suppose X is a uniform random variable with C = 20 and d = 90. Find the probability that a randomly selected observation is between 23 and 85.

144. ## Math

Put the numbers 8,6,2,5,10,1,3,7,9,4 in numerical order in five moves. You can only move 1,2, or three numbers at a time.

Harriet needs to ship a small vase. The box she will use has a volume of 216 cubic inches. If the side lengths are all the same, what is the length of each side of the box? I got 6 inches. Im not sure how i even got this answer...is it right?

146. ## Physics

The period of oscillation of a spring-and-mass system is 0.60 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring? I have too many unknowns to use the equation for frequency, period,

147. ## Math

A ship travels N27°E for 110 mi.How far directly north/south and how far directly east/west is the ship from starting point?

148. ## computing extrapolation

Derive the central difference approximation for f''(x) accurate to O(h^4) by applying Richardson extrapolation to the central difference approximation of O(h^2). where f'' = 2nd derivative of x

149. ## Finance

St. Luke’s Convalescent Center has \$200,000 in surplus funds that it wishes to invest in marketable securities. If transaction costs to buy and sell the securities are \$2,200 and the securities will be held for three months, what required annual yield

150. ## Chemistry

A 35.0-g iron rod, initially at 25.6°C, is submerged into an unknown mass of water at 67.7°C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 63.5°C. What is the mass of the water?

151. ## college math

A lawn mower handle makes an angle of 60° with the ground. A woman pushes on the handle with a force of 30 pounds. How much work is done in moving the lawn mower a distance of 75 feet on level ground?

152. ## Finance

Community Hospital has annual net patient revenues of \$150 million. At the present time, payments received by the hospital are not deposited for six days on average. The hospital is exploring a lockbox arrangement that promises to cut the six days to one

153. ## calculus

Find a rational function f : R → R with range f(R) = [-1, 1]. (Thus f(x) = P(x) /Q(x) for all x belongs R for suitable polynomials P and Q where Q has no real root). R(real numbers)

154. ## Finance

Your firm is considering the following three alternative bank loans for \$1,000,000: a) 10 percent loan paid at year end with no compensating balance b) 9 percent loan paid at year end with a 20 percent compensating balance c) 6 percent loan that is

155. ## Finance

An important source of temporary cash is trade credit, which does not actually bring in cash, but instead slows its outflow. Vendors often provide discounts for early payment. What is the formula to determine the effective interest rate if the discount is

156. ## Chemistry

Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation:

157. ## civics

what is considered to be fraud

158. ## math work

the sale of tvs rose from 17,800 to 24,000. by approximtaly what percent did the total number of flat-screens tv sets increase? please show work.

159. ## Math

A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?

160. ## Math

A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?

161. ## math

what is the volume in cubic feet if you have a cylindrical object whic is 8' in diameter and is 16' feet long.? could you please show in detail how to figure this out? thank you

162. ## physical science

a track and field athlete is running forward with a javelin at a velocity of 4.2 m/s. If he throws the javelin at a velocity relative to him of 10.3 m/s,then what is the velocity of the javelin relative to the ground? please help quick!! thanks :)

163. ## Physics

A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?

164. ## Physics

A street lamp weighs 150 N. It is supported by two wires that form an angle of 100° with each other. The tensions in the wires are equal. (a) What is the tension in each wire supporting the street lamp? (b) If the angle between the wires supporting the

165. ## Physics

An crate weighing 510 N is resting on a plane inclined 30° above the horizontal. (a) Calculate the magnitude of the acceleration (ignore friction). m/s2 (b) After 3.00 s, how fast will the crate be moving?

166. ## math

the width in cm of a rectangle is the same as the slope of the line 5x-6y=-14, and its length in cm is the same as the slope of the line that is perpendicular to the line 9x+4y=87. Find the perimeter of the rectangle.

167. ## ENGLISH

Identify the regular or irregular verb:John has become or has became a rather good actor. I choose ( has become)

168. ## Calculus

If f(x)=6arcsin(x4), find f'(x).

169. ## math

the lenght of a rectangle is one meter more more than two-thirds of the width. Find the length, width and area of the rectangle if the perimeter is 6 meters.

170. ## Physics

A uniform rod of length L and mass m initially at rest is struck by a horizontal force F0 a distance x below the pivot O. The rod is free to rotate about its pivot without friction. If F0 is the average value of the force and Δt is its duration. (a) What

171. ## math

(2/3-5/12)^2+(-5/6-2/3)^2

172. ## english(The Lord of Flies

What view of man is Golding presenting in the statement “the rules are the only thing we got?”

173. ## CHEMISTRY

Consider a 58.4 g sample of H2O(g) at 125°C. What phase or phases are present when -162 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J g-1 °C-1; liquid, 4.2 J g-1 °C-1; steam, 2.0 J g-1 °C-1, ΔHvap = 40.7 kJ/mol, ΔHfus

174. ## chemistry

How many grams of solute are in 2.l L of 3.7Moles of Al(NO3)3

175. ## physics

Suppose the coefficient of static friction between the road and the tires on a Formula One car is 0.7 during a Grand Prix auto race. What speed will put the car on the verge of sliding as it rounds a level curve of 39.0 m radius?

176. ## math

y=1/4x+y x=21.5+7y/8

177. ## Statistics

The number of arrivals per period is distributed according to the poisson with the expected value of 0.75 unit per period. the cost of waiting per unit per period is \$3.20. The facility cost for serving one unit per period is \$5.15. What expected service

178. ## Calculus

lim e^x/sin(11 x) x->0

179. ## science

what do oxygen and sugars do in photosynthesis