# Questions Asked onMay 11, 2011

1. ## Physics HELP!

You are at the controls of a particle accelerator, sending a beam of 3.90×10^7 m/s protons (mass m ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the

2. ## Chemistry

A 0.1873 g sample of a pure, solid acid, H2X was dissolved in water and titrated with 0.1052 M NaOH solution. The balanced equation for the neutralization reaction occurring is H2X(aq) + 2NaOH(aq) ¨ Na2X(aq) + 2H2O(l) If the molar mass of H2X is 85.00

3. ## Physics

A bullet moving with a speed 150 m/s strikes a tree and penetrates 3.5 cm before stopping. Find the magnitude of its acceleration and the time taken to stop.

4. ## physics

Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

5. ## physical science

If the force moving an object point's at least partially in the opposite direction of the object's motion, the work is considered to be what

6. ## stats

A company with a large fleet of cars found that the emissions systems of 18 out of the 65 randomly selected cars they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance?

7. ## Physics

If a projectile has a launching angle of 52 degrees about the horizontal and an initial speed of 18 m/s, what is the highest barrier that the projectile can clear?

8. ## Chemistry

Given: solubility (g/100g H2O) temp degrees celcius KBR 20 65 40 80 60 90 80 100 100 110 A solution containing 10.5g of KBr in 10g of H2O at 100 degrees celcius is cooled to 40 degrees celcius. A)calculate the g/100g H2O of KBr B)is the solution saturated

9. ## chemistry

sodium sulfide and cadmium nitrate undergo a double displacement reactions as shown by the following equation Na2S cd(NO3)2 -> 2NaNO3 CdS What is the mass, in milligrams,of cadmium sulfide that can be made from 5.00mg of sodium sulfide?

10. ## physics

juana slides a crate along the floor of the moving van the coefficient of kinetic friction between the crate and van floor is 0.120 the crate has a mass of 56.8 kg and juana pushes with horizontal force of 124 N. if 74.4 J of work are done on crate and the

11. ## Chemistry

Calculate normality of normal saline at 0.85%?

12. ## physics

If the pendulum’s length is 2.00 m and ag =9.80 m/s , how many complete oscillations does the pendulum make in 5.00 min? the answer is 106 but how do i find it !!

13. ## Chem

which substance cannot be decomposed by a chemical change? carbon dioxide, methane, carbon monoxide, or carbon

14. ## geomerty

The following triangles, Ä ABC and Ä DEF, are congruent. abc 67.38degree 12cm lenght 22.62degree b5cm,l,13cm Find the lengths of all missing sides and measures of all angles for both triangles. Include correct units with each of your answers. First

15. ## poetry

what is the meter in the poem "Me"by Walter de la Mare?

16. ## physics

one ball is dropped off a cliff. A second ball is thrown down 1 second later with an initial speen of 40 ft/sec. How long after the second ball is thrown will the second ball overtake the first?.

17. ## physics

Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net

18. ## chemistry

CH3OH  CO + 2H2 H = +90.7kJ 9. For the forward reaction, is heat being absorbed or released? 10. How much heat would be transferred if 45.0 g of CH3OH is decomposed? 11. What quantity of CH3OH decomposition would lead to an enthalpy change of 18.5 kJ

19. ## CRYSTAL VIOLET HYDROXYLATION REACTION

does anyone have the spartan pre-lab images/info they'd like to share? :)

20. ## maths

a pendulum 45 cm long swings through a vertical angle of 30 degree.find the height through which the pendulum bob rises.

21. ## Spanish

Complete each sentence with the correct form of the appropriate verb. Each verb will be used only once. hacer beber escribir compartir vender 1.Tú siempre agua después de correr. 2. Yo siempre la tarea después de las clases. 3. La cafetería unas

22. ## physics

Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

23. ## physics

Two electrostatic point charges of +30 μC and +25 μC exert a repulsive force of 200 N on each other. What is the distance between the two charges?

24. ## government

the federalist papers were written to what? win support for the constitution in new york expose the lack of civil liberties protected in the constitution urge ratification of the constitution in virginia condemn the constitution for the absence of any

25. ## Chem

The temperature of a sample of water is changed from 10 degree C to 30 degree C. he same change in Kevin degrees would be 1) 20 2) 100 3) 303 4) 273

26. ## p

An explosion breaks a 10 kg object (originally at rest) into two pieces, one of which is two times the mass of the other. If 8000 J is released in the explosion, a) how fast are the pieces moving away from their original location? b)how much kinetic energy

27. ## Trig

Use a cofunction to write an expression equal to csc(4ð/11). I need help solving this problem. Thank You

28. ## Geometry

Find the lateral area and surface area for a right cone whose slant height forms a 45 degree angle with the base whose radius is 8 mm.

29. ## Identifying patterns

If the pattern of polygons continues, how many sides will polygon 98 have? and there is a picture of polygon 1 which is a 3-sided triangle polygon 2- which is is a sqaure polygon 3- which is a 5 sided pentagon. polygon 4- which is a six sided hexagon

30. ## Grammar

Determine if the following sentences employ the correct use of commas and apostrophes.True=correct False=wrong 1. The wound was copiously irrigated with normal saline, and the musosal flap was replaced to its appropriate position. Answer: I think the comma

31. ## Grammar

Determine if the following sentences employ the correct use of commas and apostrophes. True=correct False=wrong 1. The child was alert upon awakening, nonetheless we felt a full workup was best at this time. Answer: True Looks good to me - flows nice.

32. ## Grammar

Determine if the following sentences employ the correct use of commas and apostrophes. True correct False wrong 1. Child's initial exam shows a furious, robust, fighting infant who is moving his head well. Answer: True

33. ## Grammar

Determine if the following sentence employ Correct use of Commas and apostrophes.True=correct False=wrong 1. The child was initially started on ceftriazone, but developed a rash and was therefore changed to chloramphenicol. Answer: TRUE nedd the comma

34. ## Chemistry

A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas? b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container,

35. ## math

Write a paragraph proof. Given: AC bisects

36. ## Grammar

Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct FALSE=wrong 1. The infant's first dextrose stick after delivery was 23; howeveer, the child drank 1 oz of formula, and the repeat dextrose stick 1/2 hour

37. ## Grammar

Determine if the following sentences employ the correct use of commas and apostrophes.TRUE=correct FALSE=incorrect 1. After discussing the woman's current diagnosis with the other doctors', it was recommended that the patient undergo a cholecystectomy.

38. ## chemistry

CH3OH  CO + 2H2 H = +90.7kJ 9. For the forward reaction, is heat being absorbed or released? 10. How much heat would be transferred if 45.0 g of CH3OH is decomposed? 11. What quantity of CH3OH decomposition would lead to an enthalpy change of 18.5 kJ

39. ## Chemistry

Identify the acid or base behavior of each substance in this reaction: H2PO4 + H2O H3O+ + HPO4-

40. ## Grammar

Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct FALSE=wrong 1.The patient is a 41-year-old, white female with a several-month's history of biliary colic. ANSWER: False Thinking comma after old can be

41. ## physics

if you push a book on a table so that its velocity is constant if the force you apply is 15 n what is the force due to sliding friction

42. ## chemistry

Explain the observed temperature change upon mixing ethanol and cyclohexane.

43. ## math

what is 3 equivalent fractions for 36/9

44. ## Grammar

Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct False=incorrect Inside of the patient's nose is crusty and clear with blood-tinged discharge; however, the patient has no complaints of breathing problems.

45. ## Physics

A convex mirror has a radius of curvature of 36.0 cm. When a 5.60 cm tall object is placed in front of the mirror, the magnification is 0.250. (a) What is the height of the image? (b) How far is the object from the mirror?

46. ## Chemistry

Calculate the pH of the 0.20 M NH3/0.20 M NH4Cl buffer. What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer?

47. ## Pre-calc

A racetrack is in the shape of an ellipse, 80 feet long and 40 feet wide. What is the width 10 feet from the end?

48. ## chemistry

How do you find the molarity(M) of NaOH in this reaction: 2NaOH(aq) + H2C2O4-H2O > Na2C2O4(aq) + 2H2O The only given information is 0.2079g of H2C2O4-2H2O

49. ## What is a good quote for Romeo and Juliet?

What is a good quote for me to explain that it is important to think before you act? In the play, Romeo and Juliet? Thanks -Allyson I was thinking of something between Romeo and Juliet themselves, it would be helpful in my essay. I've already searched

50. ## Math

You are allowed to omit two out of 12 questions on a quiz. How many ways can the six students be chosen?

asked by Combinations: URGENT HELP D:
51. ## Pre-Calc

A hall 200 feet in length is to be designed as an ellipse if the foci are 35 feet from the center. How high will the ceiling be from the center?

a basketball player scored 8 pts total during 1st and 2nd quarters of a game. During the 3rd quarter she scored 3 times as many pts as she did in the 4th quarter. Let P = the # of pts the player scored in the 4th quarter. Write and simplify an expression

53. ## physics

A hollow metal ball carrying an electric charge produces no electric field at a point: is it inside the ball?

54. ## Grammar

Determine if the following sentence employ the correct use of commas and apostrophes. True Correct False wrong 1. The girl's mother, a nurse at a local clinic, was called at her work and told of her daughter's injury. Answer: True

55. ## Algebra 1 polynomials

Write the polynomial in descending order by the exponents of the x terms 8x^2+4-5ax^3+6a^2x

56. ## geometry

I realy need help please!!!! 1-Describe the translation in words: (x, y) (x - 4, y - 9) A)4 units to the left, 9 units down B)4 units to the left, 9 units up C)4 units to the right, 9 units down D)4 units to the right, 9 units up

57. ## Science

what does the statement" the properties of salts are different from the properties of the elements that go into making them" mean ? include an example in your answer

58. ## Math

The speedometer of John's truck uses the revolutions of his tires to calculate the speed of the truck. How many revolutions per minute do the tires make when the truck is traveling at 55 miles per hour? (picture with tires with diameter of 26 in.) Suppose

59. ## Physics

The space shuttle is in a 150km-high circular orbit. It needs to reach a 560km-high circular orbit to catch the Hubble Space Telescope for repairs. The shuttle's mass is 7.00×10^4kg. How much energy is required to boost it to the new orbit? In the

60. ## Chem

2 Ag+(aq) + Fe(s) --> 2 Ag(s) + Fe2+(aq) In which directions do the cations and anions migrate through the solution? cations toward the silver cathode or toward the iron cathode thanks

61. ## Trig

Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

62. ## Chem II

2 NOCl(g) --> 2 NO(g) + Cl2(g) Let’s assume that at a given temperature the equilibrium constant is 2.25: Also, the equilibrium concentration of the NOCl is 0.04M. Determine the concentration of the NO and the Cl2 CLUE: the concentration of both of the

63. ## math

if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin a

64. ## physics

A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber

65. ## geometry

Determine the slant height of a right pyramid whose lateral area is 90 ft^2 and whose base is a regular hexagon with a 3 ft side.

66. ## biology

Discuss possible benefits and drawbacks of a transgenic organism such as Bt corn?

67. ## trig

Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

68. ## chemistry

what is the word equation for aqueous solutions of sodium chloride and silver nitrate are mixed to make an aqueous of sodium nitrate and silver choride solid

69. ## Physics

How many moles are there in a 30 cm diameter basketball at a pressure of 160 kpa and temperature of 25 degree celcius.

70. ## English

1. Select the letter of the sentence in which the correct pronoun is used. A. Who has the nominated committee selected for club president? B. John Adams was the first president whom lived in the White House. C. Who do you think will be the winner of the

71. ## math gr.10

Hi! I have been stuck on this problem for the past 20 minutes. Please help! A rectangular garden 30m by 40m has two paths of equal width crossing through as shwon. Find the width of each path if the total area covered by the paths s 325m^2. () - represents

72. ## Physical science

I need help with the gas laws (Boyle's, Charle's, Gay-Lussac's & the combined gas law). A sample of 6.00 liters of xenon is collected at 960 mm Hg and 50 degrees Celsius. What is the volume at STP?

73. ## chemistry urg!

Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

74. ## Physics

juana slides a crate along the floor of the moving van the coefficient of kinetic friction between the crate and van floor is 0.120 the crate has a mass of 56.8 kg and juana pushes with horizontal force of 124 N. if 74.4 J of work are done on crate and the

75. ## English

1. Select the letter of the sentence in which the correct pronoun is used. A. The trip led to an argument between Helen and I. B. It was we who demanded an apology from the newspaper. C. We appreciated him writing a personal letter to explain his stand on

76. ## Physics

A round body of mass M, radius R, and moment of inertia I= BMR^2 is rolling without slipping. Its kinetic energy can be decomposed into the energy of its center of mass motion (translation) and the enrgy of rotation about its center of mass. The fractions

What is the question answer flow for an exclamatory sentence

Use a cofunction to write an expression equal to csc(4ð/11). Is the answer csc(4ð/11)= 1/sin(4ð/11)

79. ## chemistry2

Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

80. ## IPC

i don't have a book or anything to go look all this stuff up so i really need help understanding this.. Which of the following statements is not true? a)negatively charged objects attract other negatively charged objects. b)postively charged objects

81. ## Math

How many cubic centimeters of ice cream can an ice cream cone (within the cone) hold if its height is 7 centimeters and the diameter of its base is 4 centimeters? Give solution accurate to the nearest hundredth. Include correct units with your solution

82. ## CHEMISTRY (HELP)

Which of the following is true about the reaction between sodium bromide and silver sulfate? 1. No reaction 2. Total ionic equation is identical to the net ionic equation 3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the

83. ## Probability

1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

84. ## Programming

I suppose to write a program that calculates the average of up to 50 numbers input by the user and stored in an array. The program should use a class name Statistics and have an AddNumber method that stores numbers into an arrey one at a time. The class

85. ## Pre-calculus

So a computer virus has been created via Corporate e-mail. Let t=0 be the time of the first 100 infections, and at t=17 minutes the population of infected computers grows to 200. Assume the anti-virus companies arent able to identify the virus or slow its

86. ## math

The price per person of renting a boat varies inversely with the number of people renting the boat. It costs \$20 per person if 27 people rent the boat. How much will it cost per person if 95 people rent the boat?

87. ## maths

The method for completing the square can be used to write the expression −2x^2 + 12x−5 in the form a(x + b)^2 + c, where a, b and c are constants. Choose the option that gives the value of c. Options A −23 B −13 2 C 5 2 D 3 E 13 F 14

88. ## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

89. ## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

90. ## Geometry

How do you calculate the lateral area and sueface area of a pyramid whose height is 8ft and whose base is a square with 12 sides.

91. ## science

determine the weight of an object if its mass is 68kg and the pull of gravity is 9.8 m/s^2. someone please help me an show the work please

92. ## Physics

A stone is thrown straight up with an initial speed of 80 ft/s. How high does the stone go, and how long does it stay in the air?

93. ## chemistry

Considering a 1.0M of each solution, which has the greatest osmolarity? 1. FeCl3 2. K2O 3. HCl 4. HC2H3O2

94. ## Math

My question is: WRite the percent as a fraction and as a decimal. 0.06% I don't know how many places I need to move that decimal to convert this percent into a decimal.

95. ## Math

Please simplify this expression: 8b + 9 + 4b - 3b + (-2b) - (-5)

96. ## Punctuation

Is this correct? Even though it is almost summer, we still have overcast skies and light rain. The neighbors’ new dog is, small, quiet and shy. The oil from Eucalyptus trees, which are native to Australia, is known for its medicinal properties. Paloma

97. ## calculus

Please help with this question. I have a general solution to a differential equation of 18y^3/2= TOP LINE OF FRACTION is 2(x^2-6x+23)^3/2 and this is divided by 3.plus Constant .I work out constant c to be zero. Is this correct? What is the particular

98. ## TRENDS IN FOOTWEAR BUSINESS

wat r sum trends in foot wear Business? Me no get this question. Trends = ?????

99. ## trig

how do you graph y=-(1/4)sin(3/4x+pi/8? include the amplitude, period, vertical translation, horizontal shift, and table of values please.

100. ## chemistry

calculate the molarity of a solution prepared by dissolving 5g of sodium hydroxide in water to make 1l of solution

101. ## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

102. ## geometry

What is the measure of angle DBC if the measure of angle ABD is represented by 4x, the measure of angle DBC is represented by 3x and the measure of angle ABC is 77 degrees?

104. ## art

how long did it take Da Vinci to paint the mona lisa? when did he start it and finish it? what is the theory about the girl who posed for it? list other professions of leonardo da vinci... please help if you know the answers

105. ## Calculus

THe demand funtion is modeled by D(q) = 56e^-0.000012q, where q is quantity and D(q) is price. What price will yield the maximum revenue? Prove this is a maximum using as qppropriate derivative test.

106. ## Number sence

What is 23.97-2.875?

107. ## geometry

help please.... 1:(-2, -1) is reflected over the y-axis. What are the coordinates of the image? A:(2, -1) B:(-2, 1) C:(-1, -2) D:(2, 1) 2:(2, -5) is reflected over the x-axis. What are the coordinates of the image? A: (-2, -5) B;(2, 5) C:(-5, 2) D:(-2, 5)

108. ## Chemistry

Can an acidic solution be made less acidic by adding an acidic solution?

109. ## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

110. ## English/Grammar

Review the following sentences. Some of them are correct, whereas others contain an error with a commonly confused word. Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that

111. ## social studies

WHAT IS SOCIAL STUDIES?

112. ## Finance accounting

Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of \$8.00 per unit. During the year, purchases were: Feb. 20 600 units at \$9 Aug. 12 300 units at \$11 May 5 500 units at \$10 Dec. 8 200 units at \$12 Eddings Company uses a

113. ## Algebra- I get 1 out of two parts

Owners of a recreation area are filling a small pond with water. They are adding water at a rate of 25 liters per minute. There are 700 liters in the pond to start. Let W represent the amount of water in the pond (in liters), and let T represent the number

114. ## Math

The nominal rate of interest is 8% and the rate of inflation is 5%. A single deposit is invested for 10 years. Let: A= value of the investment at the end of 10 years measured in "constant dollars," i.e. in dollars valued at time 0. B= value of the

115. ## chemistry

I have two solutions of 0.1 Molar. A solution of magnesium chloride and a solution of potassium chloride. I thought that the 0.1 M solution of magnesium chloride would conduct electricity better than a 0.1 M solution of potassium chloride. I did a lab in

116. ## Chemistry

Which of the following is true about the reaction between sodium bromide and silver sulfate? 1. No reaction 2. Total ionic equation is identical to the net ionic equation 3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the

117. ## math

write and equation in slope intercpt form using the folowing information : slope= 3 y intercept= -5

118. ## hum/176

Write a 500- to 550-word essay response for Part One. Comprehensive writing skills must be used.

119. ## English

Can you please check if the following sentence is correct? Thank you. 1) They have sold millions of albums so far.

120. ## teacher aide

Can someone tell me if I have it answered right. A common stereotype against females is that they are A Messy B Passive C Active D Competitive I say B passive I'm I right.

121. ## math

your brother jack will be 2 years from being twice as old as your sister jen. the sum of jacks age and three times jens age is 66. how old is jem?

122. ## religion

crossword puzzle religion, helps us learn about God, 9 letters

123. ## physics

A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 30.0 s. A given crest of the wave travels 425 cm along the rope in a period of 10.0 s.What is the wavelength? Show all of your work plz. i know

124. ## math

A number cube numbered 1 through 6 is rolled. What is the probalitlity of rolling a prime number?

125. ## math

a number cube numbered 1 through 6 is rolled.what is the probabilty of rolling a prime number.

126. ## Probability NEED HELP

1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

127. ## Number sence

In mrs. Kyoto's class,7/10 of the pupils have pets.of those pupils,4/7 have cats.what fraction of the class has pet cats?

128. ## Finance

If you invest \$500 in a bank where you will earn 8% compounded annually, how much will it be worth after 7 years?

129. ## college math

Find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm. Include correct units with each part of your solution.

130. ## Insurance form preparation

Which of the following documents would provide information on a patient's diagnosis? A. Confidential patient information record b. ledger sheet c.medical treatment record d. CPT-4 Tossed up on answer

131. ## Math: I need help.

Peg spends \$7.50 a week for grapefruit. When grapefruit are out of season, she gets 1 fewer grapefruit than when they are in season. If the price decreases by \$3 per dozen in season, how many dollars will it cost to buy a dozen grapefruit out of season?

132. ## american history

After reading about yellow journalism, explain how the media may or may not influence American foreign policy? Basically, what affect can the media have on the government’s decisions? Be sure to state specific examples from the reading. You may also want

133. ## Chemistry

how do you calculate the pOH of a 0.25M solution of monochloroacetic acetic acid at 25C

134. ## maths

The variation in size from year to year of a particular population can be modelled by an exponential model with annual proportionate growth rate 0.1246. The size of the population at the start of the initial year is 360. Choose the TWO options that give,

135. ## Physics

A driver of a car that is going 25 m/s suddenly notices a train blocking the road. At the instant the brakes are applied, the train is 60 m away. The car decelerates uniformily and stikes the train 3 secs later. (a) How fast was the car moving on impact?

136. ## geometry

the area of a trapezoid is 108 square inches and one of its bases has a length of 8 inches. If the height of the trapezoid is 1.5 feet,f ind the length of the other base in inches.

137. ## english

Please check my work. How did I do? Also, please correct me on any gramatical mistakes. Thank you. Summary, Analysis, Synthesis, and Evaluation...... Write a paragraph explaining the key differences between the four types of writing. An analysis is your

138. ## infential statistics

Random of size 2 are taken from a finite population which consist of the measurement 6,7,8,9,10 and 11 A: show that mean and that its S.D is equal to 0.493

139. ## chemistry

2.50x10 to the second power mL of 0.100M NaBr

140. ## MATLAB MATH HELP HELP HELP HELP HELP HELP

Write three functions, AppEval, AppDeriv and AppInt that approximate the value, the derivative and the integral of an unknown function f for which you are given only some unevenly spaced values. More specifically, the function AppEval has to be written in

141. ## calculus

Please help with this question. I have a general solution to a differential equation of 18y^3/2= TOP LINE OF FRACTION is 2(x^2-6x+23)^3/2 and this is divided by 3. What is the particular solution for which y=2 when x=1. Then I need this particular solution

142. ## Chemistry

A sample of iron was heated to 161.0°C, then placed into 338 g of water at 21.6°C. The temperature of the water rose to 26.9°C. How many grams of iron were in the sample? Specific heat for Iron is 0.473.

143. ## physics

A person throws a physics book off of a cliff at an initial speed of 3 m/s at an angle of 20 degrees. The book is in the air for a total of 2.5 seconds. a) How high is the cliff? b) How far away from the base of the cliff does the book land? c) What is the

144. ## ga

What letters are needed to complete this pattern? ADF GJM

145. ## maths

Choose the option that gives an expression for the indefinite integral ʃ (cos(4x) + 2x^2)(sin(4x) − x) dx. In each option, c is an arbitrary constant. Options A cos(4x) + 2x^2 +c B -1/8cos(4x) + 2x^2)^2 +c C 1/4 (sin(4x) − x)^2 + c D (1/(2 (sin(4x)

146. ## science

frastrated over your difficult asignment , you slam your hand on the table. ouch! why does your hand hurt? would it hurt if the table had broken when you hit it? (using Newton's third law)

147. ## problem solving

anna is 8th in line, carl is 3 places behind her, the man behind carl is last in line, what number is carl in line?

148. ## Math

The perfentage of residents in a city in Shreveport !@#\$%^&cycle increased from 28.3% in 2000 to 31.1% in 2007. Predict the percentage of residents who will recycle in 2017.

149. ## Romeo and Juliet Essay Question!

Okay, so this is just a few setences from my paragraph and I'm not sure how to continue with it. Another example would be that Romeo does kill himself, since he thinks that Juliet is dead. Next, Since he kills himself for Juliet, it's showing how much he

150. ## Science

Electrons move at a speed of 4.4 104 m/s through a 6.0 10-2 T magnetic field which is perpendicular to their motion. Calculate the radius of the electrons' circular path.

151. ## chemistry

How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...

the appearance of a document can do all of the following except.

153. ## English

Can you check the meaning of these few phrasal verbs, please? Thank you In the beginning I dislike my classmates but then I came around thinking they aren't so bad. Can you drop in on me after school. I need to talk to you. My plan to go to the mountains

154. ## Grammar

1. An appositive: A. is another term for possessive pronouns. B. is an antecedent. C. is always plural. D. renames the noun. I think it's D? 2. The pronoun "who" can be used for: A. subjects B direct objects C. indirect objects D. objects of the

155. ## Chemistry

If 118 g of ice at 0.0°C is added to 1.55 L of water at 88°C, what is the final temperature of the mixture?

156. ## maths

Choose the option that gives (correct to two decimal places) the area of the region which is bounded by the x-axis and by the graph of y =(20(7 − x)(x − 3))/x^2 . Options A 0.47 B 1.31 C 2.09 D 3.76 E 5.12 F 6.55 G 8.20 H 9.46

157. ## Calculus 3

Vectors The thrust of an airplane's engine produces a speed of 400 mph in still air. The wind velocity is given by . In what direction should the plane travel to fly due south? Give your answer as an angle from due south.

158. ## Geometry

Calculate the lateral and surface area of a prism whose height is 12 cm and whose base is a rectangle with dimensions 5 cm by 7 cm.

159. ## geometry

if the width and height of the original 4in by 6in photograph is increased by a factor of 5,what are the dimensions of the enlargements?

160. ## HCA/230

I am totally stuck on my hw assignment maybe you can give me a pointer to start? This is what I have to do: Patients and caregivers may conform to a specific role during a health care visit. This usually happens because of cultural background or the

161. ## probability and statistics I NEED HELP

The MSU basketball team is playing OU. If the probability that MSU wins the game is 0.68 and the probability that OU wins is 0.27. 1. Find the probability that MSU or OU wins. 2. Find the Probability that there is a tie.

162. ## Number sence

What is 23.97-2.875?

163. ## Pre-Calc

A mirror is in the shape of a paraboloid. If a light source is 6 feet from the base along the axis of symmetry and the opening is 12 feet across, how deep should the mirror be?

164. ## Punctuation

Paloma did not make it to work for her car, broke down on the freeway. Is this better? The hardware store down the street, which had been paved recently, is open until midnight five days a week. Many students anticipate spring break but, Luis looks forward

165. ## physics

A person throws a physics book off of a cliff at an initial speed of 3 m/s at an angle of 20 degrees. The book is in the air for a total of 2.5 seconds.

166. ## math

Generate ordered pairs for the function for x= -2, -1, 0, 1, 2

167. ## geometry

Need help in finding -the lateral area and surface area for a cylinder whose height is 8cm and radius is 9 cm.

168. ## Geometry

Find the surface are of a tent including the floor whose shape is cylinderical with a conical top. The diameter is 24 ft the height of the cylindrical portion is 6 ft and the height of the conical portion is 5 ft.

169. ## Geometry

Determine the length of an arc with the given central angle measure, m

170. ## math

y - - 8= -12 solve the equation please :( 5

171. ## chemistry

How much energy does it take to heat 10ml up 30 degrees celcius in kilocalories

172. ## Social Studies

5 paragraphs about the colonist life??

173. ## chemistry

what volumes of 2M and 4M CaCl2have to be mixed to give 6Liters of 2.5M CaCl2?

174. ## math

if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin a

175. ## algebra

How do you determine the point of a solution of the system.The point is 46, 0 2x+10y+92 -6x-2y=24

176. ## english

how did people dress in Elizabethan England? How did the way people dress differ depending on his or her social status? what was the music of the Elizabethan era like? Who were some famous composers? please help me because I cant find these answers

177. ## discrete math

"a club with 20 members must choose a three-person committee and a five-person committee. how many ways can the two committees be chosen if the committees can overlap? how many ways can the two committees be chosen if the committees cannot overlap?".

179. ## Math

Find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm. Include correct units with each part of your solution.

181. ## Chemistry

To what volume must a solution of 86.1 g H2SO4 in 494.0 mL of solution be diluted to give a 0.18 M solution?

182. ## math

A recreation room has the following dimensions.12ft,30ft,8ft,8ft. Carpeting will cost \$1.50 a square foot. How many square feet of carpet will be needed and how much will it cost? Include correct units at each stage within your solution.

183. ## math

A coin is tossed four times. Find the probability of each of the following: P(exactly 1 head) I know we have to use to this formula p(x=0)=nCk(p)^k(1-p)^n-k How do you find P? if n=4

184. ## Physics

A vector of magnitude 10 unit combine in the nurth direction combine with another vector to give a zero resultant what is the other vector?

185. ## Soc 110

I need to write a paper of body word count of 750 words about the use of surveys by sociologist

186. ## Geometry

calculate the surface area of a hemisphere with the radius 10 ft

187. ## maths

By first applying the Product Rule, choose the option that gives (correct to two decimal places) the overall maximum value of the function f(x) = e^3x cos(2x) on the interval [1/12 π, 1/4π]. Options A 0.49 B 1.90 C 2.19 D 2.42 E 3.97 F 5.88 G 7.46 H

188. ## Math Webquest

Hey I'm working on a webquest about colleges comaring UCLA, FSU, PSU, and one of my choice. I'm wanting to major in graphic design and my Aunt told me a school acronym that sounded like FACTs. She said it was _____ of Art and Science. Any help with a list

189. ## statistics

The sum of the measures of all angles in any 10-gon is how many degrees?

190. ## algebra

Determine whether the point 1.8 is a solution of the system. Subitute the point of each equation. 2x+6y=50 10x+0y=10

191. ## algebra

solve using elmination method 2x-6y=2 -8x+6y=26

192. ## geometry

equation of a line with the co-ordinates(10,0),(11,2),(12,4),(13,6) and (14,8)

195. ## Calculus

Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2 = -1 Is this true or false. I think it's false, but can someone

196. ## Algebra 1

8/9 devided by 6/17 whats the answer in simplest form

197. ## Geometry

Determine the height of a right cone whose lateral area is 136rr ft^2 and base area is 64rr ft^2

198. ## math

solve 2(t-4)=3- (3t +1)

199. ## riddle

what starts with "ne" and is one of nine, and ends with "ne" and is eighth in line

200. ## maths

The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

201. ## medical billing/coding

You're an HMO director. You would like to ensure that your managed care plan is meeting industry standards. Whats one way you acn do this/

202. ## physics

if a van has a package in the back and is traveling 55 miles and hour is in a head on collision with a vehicle also traveling 55 miles an hour how fast is the package in the back of the van going to hit the driver in the back

203. ## aiu

Read the following scenario about Mary. Based upon the information in the text and your own online research, discuss Maryâ€™s ethical options. What do you think that she should do? Mary recently graduated from college and landed her first corporate

204. ## math

find the value of n so that x2-n=0 has solutions at x=8 and x=-8

205. ## Number sence

What is 1/3+1/2?

206. ## algebra

whats the subsitution method for: 7x+63y=12 x=3-9y

207. ## Writing

How do you mark thoughts in writing?

208. ## Number sence

What is 15% of 200

209. ## math

find the exact value using a double-angle identity

210. ## math

Apply logarithms to create a linear relationship: ((x^3)(y^1.5))/(z^.5)=k

211. ## Maths

How do u write 10th May 2011 in 9letters without using number??

212. ## math

Simplify (-4)4 the second 4 is the coeffcient plzz HELP

213. ## human resources

List one external factor that you feel has a powerful influence on your company's HRM function and explain why?????

Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2) = -1 Is this true or false. I think it's false, but can someone

215. ## chemistry

predict the actual precipitates which form (if such is the case) when the following solutions are mixed. a) silver sulphate and barium chloride b) ammonium iodine and potassium phosphate'' c) lead(II) acetate and rubidium bromide

216. ## math

simplify (-4)4 the second 4 is the exonent

217. ## maths

Choose the option that gives the solution of the initial-value problem dy dx=(1 + 2 cos2x^2)/y (y > 0), y= 1 when x = 0. Options A y = 1+ 2sin^2 x B y = (1 + 2 sin x)^2 C y = (4x + cos(2x))^2 D y = 4x + cos^2 x E y =sqrt(4x + cos(2x) F y =sqrt(1 + 4x +

218. ## Tips

What are some tips for writing a book?

219. ## writing

how do sentences with the word brood

220. ## probability and statistics

The MSU basketball team is playing OU. If the probability that MSU wins the game is 0.68 and the probability that OU wins is 0.27. 1. Find the probability that MSU or OU wins. 2. Find the Probability that there is a tie.

221. ## math

1245798 divided by 124 equals

222. ## algebra

What do they mean when they ask you to find the function form?

1/10L=ml

225. ## math

A customer is buying a \$100 drill and two \$15 drill bit sets. The customer uses a gift card worth \$50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?

227. ## math

Is this a direct variation y= -2x + 6

228. ## URGENT - History

Hi, Okay, so where can I get other cartoons on Stalin? I was searching like forever to find that one. Thanks for all your help

229. ## IPC

Dont understand ipc at all... As more resistors are added to a series circuit, the current ____ Increases Stays the same Decreases

230. ## maths

The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

231. ## geometry

If Úc ≅ Úd, mÚc = 5x - 7, and mÚd = 3x + 25, how many degrees are in Úc? 9‹ 16‹ 52‹ 73‹

232. ## maths

A sequence is defined by un = 2×(−0.5)n + 3 (n = 1,2,3, . . .). Choose the option that best describes the long-term behaviour of the sequence. Options A un becomes arbitrarily small (that is, un → 0 as n→∞). B un becomes arbitrarily large and

233. ## algebra

6sqrt (2) - 3sqrt (7) = ???

234. ## math

A baq of 60 marbles has 8 red, 9 blue, 10 orange, and 33 green marbles. In drawing a marble from the bag 100 times, an orange marble was picked 13 times. What was the likelihood of an orange marble being picked? Is this more or lessthan the actual number?

235. ## science

i need 3 examples of supension. any suggestions?

236. ## Math 1

if f=2X-5 and g(x) = 7x3

237. ## WRITING

how to give credit to line from a book that your putting in your research paper?

238. ## math

[7-(-8)]|-6|=

239. ## Ethics

What are three most important concepts or principles of ethics involved in medicine and the provision of health care services?

240. ## Math

Can you help simplify this problem for me? -9[12-8(-3)*(-5)+1 Thank you!

241. ## Math

Can you help me simplify this problem? 2y+y^2-xy-(xy-y+3y^2) Thanks

242. ## math

generate ordered pairs for the function x= -2, -1, 0, 1, 2

243. ## comp/155

explain why using pronouns may help make your writing more effective?

244. ## cchs

what are the name of the three parts

245. ## math

Please complete each equation 1. 15k = (9 - _____)k 2. 3.6p - p = _____ - 0.4p 3. (8 + _____) * = 5m

246. ## Algebra 2

The speed of the current is 5m/h. Angie goes upstream 25 miles and returns to the doc. The whole trip takes 12 hours. What is the speed of the boat in still water?

247. ## Life Orientation

5 ways in which pollution impacts the community