# Questions Asked onDecember 3, 2011

1. ## Math

An oil refinery is located 1 km north of the north bank of a straight river that is 3 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 8 km east of the refinery. The cost of laying pipe is

2. ## physics

A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 1.90 10-6 W/m2 at a distance of 120 m from the explosion. Find the distance from the source at which the intensity is

3. ## trig

a 30 foot ladder leans against a wall at a 71 degree angle of elevztion find the distance of a ladder's base to the wall

4. ## physics

A spider hangs from a strand of silk whose radius is 4.40 10-6 m. The density of the silk is 1300 kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 264 m/s. Determine the mass of the spider.

5. ## english

which of the following is an example of an adverbial clause fragment? 1.Wherever there is a chance for a fabulous meal,2. who described the book as a compelling masterpiece or 3.that the poet choose words carefuly to convey a particular tone. I think it is

6. ## calculus

1. Given the curve a. Find an expression for the slope of the curve at any point (x, y) on the curve. b. Write an equation for the line tangent to the curve at the point (2, 1) c. Find the coordinates of all other points on this curve with slope equal to

7. ## chemistry

A 15.0 ml sample of an unknown HClO4 solution requires 50.3 ml if 0.101 M NaOH for complete neutralization. What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+ NaOh(aq)yields H2O(l)+ NaClO4 (aq) If anyone

8. ## calculus

Find the average value of the function f(x)=8x^2-5x+6 , on the interval [3,5]. Find the value of x-coordinate at which the function assumes it's average value. what is the average value = to ? what is the x coordinate = to ? Thanks

9. ## trig

Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

10. ## statistics

If Q2 = D5 = Median Which means if the 2nd quartile equals to 5th decile and also the median.. then how do we find out the fourth decile? I mean is there a way to find it out through this? Then what is D4 going to be? I am talking about Deciles here..

11. ## physics electricity & magnetism

Charge Q=4 micro-coulombs is distributed uniformly over the volume of an insulating sphere of radius R=.05 meters. What is the potential difference between the center of the sphere and the surface of the sphere? How do I approach this problem? I tried

12. ## acc

Which of the following is a true statement about manual and electronic accounting systems?

13. ## chemistry

Consider a liquid at 90 bar and 40 °C. What is the change in entropy of the substance as you change the conditions to 1 bar and 150 °C by expanding the liquid while heating? Vapor pressure = 59.2 bar heat of vaporization = 1.82 kJ/mol , both at 150

14. ## precalculus

Can someone verify if my answer is right? 1. Which function has a negative average rate of change on the interval 1

15. ## geometry

The area of a particular regular hexagon is x^3 square units, where x is the measure of the distance from the center of the hexagon to the midpoint of a side. what is the side length of a hexagon?

16. ## Physics

The equation of a transverse wave traveling along a very long string is given by y = 5.2 sin(0.013π|x + 4.7π|t), where x and y are expressed in centimeters and t is in seconds. (a) Determine the amplitude. (b) Determine the wavelength. (c) Determine the

Returned \$200 of the inventory that it had purchased because the inventory was damaged in transit. The freight company agreed to pay the return freight cost.

18. ## Physics

A sinusoidal wave is traveling on a string with speed 30.00 cm/s. The displacement of the particles of the string at x = 15 cm is found to vary with time according to the equation y = (5.0 cm) sin[1.5 - (3.0 s-1)t]. The linear density of the string is 5.0

19. ## Math

A 20 foot ladder is leaning against the side of a building. The bottom of the ladder is 4 feet from the wall. How many feet above the ground does the ladder touch the wall?

20. ## precalc/trig

Write the partial fraction decomposition of the rational expression. 4x^2–19x+31/ (x+2)(x^2–4x+5)

21. ## Math

Jim Gray invested \$8,500 four times a year in an annuity due at All-Star Investments for a period of 3 years at an interest rate of 12% compounded quarterly. Using the ordinary annuity table , calculate the total value of the annuity due at the end of the

22. ## statistics

A company assembles drills using components from two sources. Acemart supplies 91% of the components and Begud supplies the rest. It is known that 6% of the components supplied by Acemart are faulty and 3% of those supplied by Begud are faulty. a)

23. ## algebra

have 50 sq ft of material to make an open top box with a square base. a) use formula for surface area to express the height h of the box in terms of x. b) find the dimensions of the box that will produce the maximum volume.

24. ## chemistry

A 15.0 ml sample of an unknown HClO4 solution requires 50.3 ml if 0.101 M NaOH for complete neutralization. What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+ NaOh(aq)yields H2O(l)+ NaClO4 (aq) If anyone

25. ## medical billing and coding

I need help with this assignment. Apply the appropriate Level II HCPCS code modifier for each of the following examples. Explain your rationale for each selection. a. Sutures, upper right eyelid b. MD calls ambulance to transport a patient from his office

26. ## Talent Search Summer Program

Hi Jishka!!! Is there any videos and info about the John Hopkin Talent Search Summer Program. My dad wants some info (also includes videos about it). Please Thank You!!!!

27. ## algebra

solve the formula for the indicated variable solve the volume of a rectangular prism v=lwh, for h

28. ## Thermochemistry

Compute the amount of heat released (absolute value) when 2.3 kg of liquid ethanol is burned in excess oxygen to make carbon dioxide and liquid water.

29. ## Thermochemistry

Suppose 23.6 g of ClF3(g) and 40 g of Li(s) are mixed and allowed to react at atmospheric pressure and 25 !@#\$%^&il one of the reactants is used up, producing LiCl(s) and LiF(s). Using the NIST value for the enthalpy of formation of ClF3

30. ## math equation

please solve 2x is greater than or equal to 12

31. ## AP calculus

The consecutive terms of an arithmetic progression are 5-x, 8, 2x. Find the common difference of the progression.

32. ## calculus

1. Let y = f(x) be the continuous function that satisfies the equation x^4-5x^2y^2+4y^4=0 and whose graph contains the points (2, 1) and (-2, -2). Let l be the line tangent to the graph of f at x = 2. a. Find an expression for y’ b. Write an equation for

33. ## English

Could you please check these statements, please? Thank you. 1) Both the witches' prediction and Macbeth's ambition increase Lady Macbeth's thirst/desire for power. 2)Sleep is seen/regarded/described/personified (are they all possible?) an innocent murder

34. ## English

which of the following is an example of a fragment? A) When Ted went to work, Bob went home. B) Although Ted went to work and Bob went home. C) Bob went to work although Ted went to work. D) Although Ted went to work, Bob went home. I Think the answer is

35. ## math equation

use the intercept to graph the equations 3x-9=3y

36. ## Gr. 9 Math

The line segment joining each pair of points has given slope. Determine each value of x. Draw each segment on a grid. a) A(-1,2), B(x,6) slope 1/2

37. ## algebra

solve e^x / 3 = 5^x using logs.

38. ## Math equation

Please determine if -4 is a solution of the inequality x ¡Ý 4

39. ## math

Solution:if a car traveled 5 km/h.Faster it would take one hour less to travel210 kilometer.What is the speed of car and what time does it take?

40. ## physics

A wave traveling along the x axis is described mathematically by the equation y = 0.15 sin (7.5πt - 0.49πx), where y is the displacement (in meters), t is in seconds, and x is in meters. What is the speed of the wave?

41. ## physics

A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 355. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 72 dB. What sound intensity level would

42. ## algebra

how would I solve using addition or multiplication principle? x+15>16

43. ## World religions

For this project for school we have to represent the noble eightfold path ( right view) to canadian society , but i am so stuck , i don't really know anything that would make sense, any help would be great

44. ## physics

Dolphins emit clicks of sound for communication and echolocation. A marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1522 m/s. When the dolphin is swimming directly away at 7.9 m/s, the marine biologist measures the

45. ## English12 (EssayCheck Part 1)

I know I posted this but, I need suggestions on my essay. I'm going to break this into parts so it doesn't look so long make it easier. Please give me any feedback. I just want to know what you think about it. Don't worry about grammar errors for now. I

46. ## precalculus

How do you do this question? 1. A speed versus time graph shows the segment from (3, 4) to (8,4). The units for the vertical axis are m/s. If the object whose speed was being graphed is 8 m away from the point from which measurements are made at t= 3s, how

47. ## English

Which of the following is correct? a)Who's toothbrush is floating in the toilet? b)Whose going to Dairy Queen with me? c)Whose jacket is that? d)b&c I believe the answer is C

48. ## English12 (EssayCheck Part 2)

I know I posted this but, I need suggestions on my essay. I'm going to break this into parts so it doesn't look so long make it easier. Please give me any feedback. I just want to know what you think about it. Don't worry about grammar errors for now. I

49. ## math

Solve the equation by using the square root property. Simplify all radicals. (a) x2 = 256 (b) t 2 = -144

50. ## English

Which of the following is correct? a) We were supposed to go to the game today, but it rained. b)We were suppose to go to the game today, but it rained.

51. ## algebra 2

Write an equivalent expression using radical notation 1.(a^2b^2)^1/9 Use the laws of exponents to simplify 2.6^3/5* 6^5/10

52. ## chemistry

A 15.0 ml sample of an unknown HClO4 solution requires 50.3 ml if 0.101 M NaOH for complete neutralization. What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+ NaOh(aq)yields H2O(l)+ NaClO4 (aq) If anyone

53. ## English

Am doing a project about Autism, what are the Cogngntive and pscohosocial of Autism and where can I find them? Thanks!

54. ## English12 (EssayCheck Part 3)

This is part 3 of my essay. Give any feedback. Any suggestions. This peer editing is part of my marks for my essay. Anytime you got can you look over my essay. don't worry about errors I got that cover. Ernest Hemingway had many writers as his literary

55. ## English

I just wanted to know how you would evalute these sentences, which are part of an essay. 1) "The monologue is when the actor is alone on the stage and he gets speaking while the soliloque is when there are some actors and one gets speaking as something he

56. ## english

need help with my Juggling topic.I got 6/20 and I want to get the full 20 points! Thanks!Such as thesis, Introduction. Thesis: The purpose of my speech is to inform my audience about my experience with juggling; more specifically how I became involved with

57. ## English

Which of these is the properly punctuated sentence? a)Ted went to work and Bob went home. b)Ted went to work; and Bob went home. c)Ted went to work. And Bob went home d)Ted went to work, and Bob went home. Would the correct answer be D?

58. ## chemistry

when 1.00 g of stearic acid ( a saturated fatty acid) is dissolved in water, then diluted to exctly 10.00 ml, the PH of the resulting solution is 2.73.the fornula weight of steric acid is 284.5. calculate ka and pka for this acid

59. ## grammar

Can you check these sentences, please? "I've always loved animals and felt I could communicate with them. To become a veterinarian, I must carefully choose the right school."

60. ## English

Hi , I wanted to do questionnaire survey regarding two comparison product . The product is Samsung Galaxy S2 and Apple Iphone 4 . It would be really helpful if someone could assist me and give some ideas . The targeted audience is University students .

61. ## chemistry

calculate the volume of 0.080 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 4.00 L=

62. ## English 12: Research Essay

I'm doing a research paper on Ernest Hemingway. I have to write 1,500 word essay on it. I chose to write about his jobs that helped him gain experience for writing and about his literary influences. I need this for marks. I need people to read it over and

63. ## English

Can you give me three metaphors in the poem "Tonight I can Write", please?

64. ## Chemistry

What is the pressure in millimeters of mercury of 0.0155 mole of He gas with a volume of 206 mL at a temperature of 30 degrees C? I used the ideal gas law and ended up with 1.87 mmHg but it said that was wrong. Please help.

65. ## English

I urgently need you to check a few sentences 2-4 which I need to include in an email. 1)The universe was conceived in the forms of a chain of being and a cosmic dance. (Can I replace "in the forms of" with "like" or "as"?) 2) As you are both a science and

66. ## English

I left out a few sentences belonging to the same post. Thak you. 1) We, on our side (??) will choose only students who are high achievers and who are willing to devote time and energy to the project. 2) All my students are very anxious (?looking forward to

67. ## Science HElp

In blunt trauma of thoracic cavity, which organ of greatest risk of injury. live lungs heart stomach i googled but could not find the best anwser cuz every organ above listed is involved.

68. ## math equation

find the slope if it exists y=-2x+4

69. ## Practice SAT's

If I don't have to be in honor classes just a 99 or 100 gpa then if thee any online worksheet I can print out for me to pratice crictal thinking, math, and reading in a 7th grade level for SAT's.

70. ## French

I am doing a report about Les Arts in the USA and in Alsace, France. Like music, painting, sculptures etc. Do you guys know of any website with information about the common types of paintings in Alsace or music played?? thanks

Factor the common factor from the expression: x^1/3; x^10/3 + x^1/3

72. ## physics

Consider the 671 N weight held by two cables shown below. The left-hand cable had ten- sion T2 and makes an angle of 47 with the ceiling. The right-hand cable had tension T1 and makes an angle of 43 with the ceiling. a) What is the tension in the cable

73. ## Algebra

x^1/3; x^10/3 + x^1/3

What are the three elements of customer service, and how are they important to CRM?. * CRM is (customer relationship management)*

75. ## Physics

Vibrations from a 650 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is 410 m/s. The standing wave has four loops and an amplitude of 4.0 mm.

76. ## Physics

A wire 13.0 m long and having a mass of 80 g is stretched under a tension of 205 N. If two pulses, separated in time by 30.0 ms, are generated, one at each end of the wire, where will the pulses first meet?

77. ## Physics

A string fixed at both ends is 8.71 m long and has a mass of 0.119 kg. It is subjected to a tension of 92.0 N and set oscillating. (a) What is the speed of the waves on the string? (b) What is the longest possible wavelength for a standing wave? (c) Give

78. ## Accounting

Directions: Be sure to make a copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English spelling and grammar. Sources must be cited in APA format.

79. ## Algebra

Factor the common factor from the expression: x^1/3; x^10/3 + x^1/3

80. ## science

which planet increase and decrease like moon

81. ## gk

who is informel prime minister of the world

82. ## Physics

A string fixed at both ends is 8.71 m long and has a mass of 0.119 kg. It is subjected to a tension of 92.0 N and set oscillating. (a) What is the speed of the waves on the string? (b) What is the longest possible wavelength for a standing wave? (c) Give

83. ## Math

Term-structure of interest rates and Arbitrage The current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate (r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before

84. ## English

I really need you to check these sentences. Thank you. 1) Shakespeare meditates whether time is preordained or not inevitable, the result of human activity. 2) The concept of the universe as a cosmic dance was derived (induced) from the new scientific

85. ## math equation

graph the equation and identify the y-intercept x+4y=12

86. ## Composite Functions

f(x)=(7x+28)/(x-3) and g(x)=(3x+28)/(x-7) Find: (fog)(x) (gof)(x) (fog)(-1)

87. ## english

compare and contrast the outsiders and today's Youth Gangs

88. ## math

The curve C with equation y=fx passes through the point (3, 14/2) given that f'(x)=2x+3/xsquared a) find f(x) (5 marks) b) verify that f(-2)=5 (1 mark) c) find an equation for the tangent to C at the point (-2,5) giving your answer in the form ax+by+c=0

89. ## statistics

A sixth form class consists of 6 girls and 9 boys. Three students from the class are chosen at random. The number of boys chosen is denoted by the random variable X. Show that a)P(X=0)=120/2730 b)P(X=2)=1296/2730

90. ## Calculus

A point P in the first quadrant lies on the parabola y=x^2. Express the coordinates of P as functions of the angle of inclination of the line joining p to the origin. I honestly don't think my math teacher explained this at all. Please help. Thank you very

91. ## Physics

A string vibrates according to the equation y' = (0.30 cm) sin[(π/3 cm-1)x] cos[(55π s-1)t] What is the speed of a particle of the string at the position x = 1.5 cm when t = 9/8 s?

92. ## statistics

For any married couple who are members of a squash club, the probability that the husband has a degree is 2/4 and the probability that the wife has a degree is 1/4. The probability that the husband has a degree given that his wife has a degree is 3/9. A

93. ## physics

A person of mass 65 kg is ascending on an escalator at a constant velocity of 2.5 m/s [22°above the horizontal]. Why The magnitude of the net force acting on the person is 0 N

94. ## maths

The curve C with equation y=fx passes through the point (3, 14/2) given that f'(x)=2x+3/xsquared a) find f(x) (5 marks) b) verify that f(-2)=5 (1 mark) c) find an equation for the tangent to C at the point (-2,5) giving your answer in the form ax+by+c=0

95. ## Math

How do i figure out the instantaneous rate of change with given graph and it says find the rate at t = 6 s

96. ## algebra

Chemist has 30 kg of mixture that is 1/7 lead and 6/7 copper. How many kg of lead must be added so resulting mixture is 2/9 lead.

97. ## Economics

A monopolist is in long-run equilibrium and earning economic profits equal \$100 million. The government imposes a lump sum tax of \$100 million on the monopolist. (A limp sum tax is a tax the monopolist must pay regardless of its level of output) Will this

98. ## math

decorator has 92 one foot square tiles to be laid around edge of 12 x 15 ft room. A rectangular rug that is 3 feet longer than it is wide is to be placed in center area where there are not tiles. Find the dimensions of the smallest rug that will cover the

99. ## math

Express 9.39 · 109 seconds in terms of days

100. ## Algebra 2

1.)Find inverse function of the function f(x)=(x+3)+9 2.)Find the inverse of the function r(x)=3x-6/5x+3 thanks

101. ## poetry

Narrative ,free verse, limerick,acrosstic poems about soccer

102. ## physics

Consider the 671 N weight held by two cables shown below. The left-hand cable had ten- sion T2 and makes an angle of 47 with the ceiling. The right-hand cable had tension T1 and makes an angle of 43 with the ceiling. a) What is the tension in the cable

103. ## Alg2

# of possibilities of arrangements for the word intercept?

104. ## physics

Calculate the time elapsed if the speed of a truck going south is reduced from 80 km/h to 44 km/h in a distance of 250 m.

105. ## Alg2

A video store has 8 new releases this week. Each is available on videotape and on DVD. How many ways can a customer choose a new release and a format to rent? answer here How many ways can six different books be arranged on a shelf if one of the books is a

106. ## French

What are common types of music in Alsace? Do you know of any webstes with this info?

107. ## math

Evan is painting a stool that has a cylindrical seat and four rectangular prism legs. The seat has a diameter of twelve inches and a height of 2 inches. Each leg is 3 inches by 3 inches by fourteen inches. How much area will Evan have to paint? Use three

108. ## algebra

During the first part of a trip a canoeist travels 71 miles at a certain speed. The canoeist travels 5 miles on the second part of the trip at the speed 5mph slower. The total time for the trip is 4hrs. Waht was the speed on each part of the trip

109. ## math

4 x (32-2)+ 12 / 4 x 3

110. ## math

Solve the equation by using the square root property. Simplify all radicals. 2x^2 = 11 how do I solve this?

111. ## Chem

if salt has the solubility product expression Ksp={Br3+}2{S2-}3 what is the equilibrium equation for the solubility?

112. ## chemistry

Determine the of mole of water molecules in one mole of a sample of an iron containing (nh4)2so4. FeSO4. nH2O. titrate a solution of the iron containg (solution Y)

113. ## Chimestry

How many moles of HNO(3) are present if 4.20*10^-2 mol of Ba(OH)(2) was needed to neutralize the acid solution?

114. ## statistics

1.a person selects a card from a deck .it is a red card ,he wns 1\$.if it is black face card between or including 2 and 10,he wins \$5.if it is black face card,he wins \$10 and if it is black ace,he wins \$100.find the expectation of the game is to be fair?

115. ## math equation

use the intercept to graph the equation -x+5y=10

116. ## algebra

a man 6.2 feet tall stands 12 feet away from a streetlight and casts a 5 ft shadow. How tall is the streetlight?

117. ## Chemistry

If the initial concentration of NH3(g) is 4.643 mol/L, calculate the % of NH3(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kc at 773.0 K is 16.70. The initial concentration of the reaction products is

118. ## math

Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 99 percent of the time. Work Element Standard Deviation (minutes) Mean Observed Time (minutes) 1 0.20 1.10 2 0.10

119. ## statistics

if high count is greater thank 8, medium count greater than 4 less than or equal to 8, and low is less than or equal to 4 write an inequality to find the range at which the count is not medium

120. ## math

if high count is greater thank 8, medium count greater than 4 less than or equal to 8, and low is less than or equal to 4 write an inequality to find the range at which the count is not medium

121. ## algebra

use the percent equation to answer the following. solve the percent equation for h percent equation is a/b=p/100 thanks

122. ## Calculus

Compute the volume of the solid formed by revolving the fourth quadrant region bounded by y = x^2 - 1 , y = 0, and x = 0 about the line y = 6.

123. ## chemistry

Please help again. How many grams of lithium are required to completely react with 70.7 mL of N2 gas at STP when given the following reaction: 6Li + N2 = 2Li3N

124. ## English

Using the lists of possible answers, use the letters assigned to the characters/people to identify who would be the speaker of each of the following paraphrases/quotations: 1)I think we'll all be destroyed by the A-Bomb,so why should I care about anything?

125. ## algebra

In a circle with radius of 7 cm, an arc of the circle has length 22 cm. The central angle theta is ??

126. ## biochem

can someone help me write a balanced 1/2 rxn for the oxidation of glyceraldehyde-3-phosphate to glycerate-1,3-bisphosphate? I confused on where to put the electrons and how many are needed

127. ## chemistry

something connects a 16 resistor, 23 resistor, and 34 resistor in series and then connects the arrangement to a 36 v dc source. how much current is in the circuit?

128. ## algebra

a wheel with a diameter of 12 inches is spinning at 10 revolutions per mnute. In one minute, a point on the edge of the circle would have traveled a distance of ???

129. ## Statistics

Hi. I need to complete hypothesis tests and i am unsure if i used the correct tests for each of the following: 1. Do people actually prefer Pepsi or Coke in a taste test? 2. Can people correctly identify Pepsi versus Coke? 3. Are people consistent with

A college professor told her students, “The purpose of a management course is to teach students about management, not to teach them to be managers.” Do you agree or disagree with this statement? Why or Why not? Also, is efficiency and effectiveness

131. ## Physics

A ball is thrown straight upward and returns to the thrower’s hand after 2.90 s in the air. A second ball is thrown at an angle of 32.0 ◦ with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one

132. ## statistics

Q2 = D5 = Median Then what is D4 going to be? I am talking about Deciles here

133. ## geography

1. Cape Agulhas is the southernmost point on what continent? Africa 2. What capital city is near 20 degrees N latitude and 100 degrees W longitude? Mexico City 3. Would you probably find a scale of 1-inch equals 1,500 miles on a map of your city, state or

134. ## mira mar

What do you think about my essay, It is a Cynthia Owens English 43 Instructor Toland Perry Dec 5th, 2011 How to Make a Fruit Pizza My fruit pizza is always a great conversation piece at any occasion I have taken it to, and it is always the hit of the

135. ## physics

A circular disk of mass 0.2 kg and radius 24 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.4 rad/s. Find the new angular velocity of the combination.

136. ## physics

A 2 kg ball is dropped from a height of 433 mm. Calculate the height (above the ground) at which KE is one third of PE.

137. ## physics

The air inside a hot air balloon has an average temperature of 71.7° C. The outside air has a temperature of 11.1° C. What is the ratio of the density of air in the balloon to the density of air in the surrounding atmosphere?

138. ## Physical Science

Which astronomical objects that appear as points of light to the unaided eye appear as disks with the help of a telescope?

139. ## chemistry

There is a titration of 5.00 mL .010 M NaOH with .005 M HCl. Indicate the pH of the initial and final solutions and the pH at the stoichiometric point. What volume of HCl has been added at the stoichiometric point and the halfway point of the titration? I

140. ## chemistry

What is the molarity of OH- in an aqueous solution that is 0.31 M HNO3?

141. ## Physical Science

Both galactic nebulas and globular clusters occur in our galaxy. Distinguish between them.

142. ## Physical Science

How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?

143. ## algebra

Factor the common factor from the expression: x^1/3; x^10/3 + x^1/3

144. ## Physical Science

(a) Why is the sun considered to be located in the central disk of our galaxy? (b) What is thought to occupy the center of the disk?

145. ## Math

A photo width of 8cm, length of 14cm .if the perameter of photo is increased by 5o % , which dimension is for new perimeter. options are: 16cm by 28cm 12cm by 21cm 4cm by7cm 8cm by28 cm i chose the first option cuz it increased 50.but i ma not sure if i am

146. ## math equation

graph the equation and identify the y-intercept y = 2/3x+ 2

147. ## Government US

Which of these groups is NOT likely to support Democratic candidates? a. Lawyers b. Health care workers c. Teachers d. Public sector employee unions e. Building trades I would say Building Trades?

148. ## Pre Calc

Find the volume of the solid formed by revolving the region bounded by y = 16 - x^2 and y = 0 about the x-axis .

149. ## Government US

Texas Republicans are likely to be a. lower-income. b. central-city residents. c. Hispanics. d. middle-aged. e. Catholic. Is e correct?

150. ## math equation

solve using the addition and multiplication principle 5x+2-4x is less than or equal to 13

151. ## math

A white rose plant has 3 time as many blooms as red.Togher they are 48 ,which of following number of bloom on white rose. 12...24....36...16 48 divided by 3 ..16 i answered 16....? i don't rembered the second question excatly word by word , it come in test

152. ## 10th grade World History

How did the ideas of Enlightenment led to changes in European Music and Literature during the 18th Century.

153. ## math

number of people who hear a rumor after t hours is N(t) = 2000/ 1 + 499e^-0.3t How long will it take for 200 people to hear the rumor?

154. ## Mechanics

Two blocks with masses m1 = kg and m2 = kg are connected by a string that hangs over a pulley of mass M = kg and radius R = m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it

155. ## economics

5.How would you decide what was the best level of emission reduction

-3x

157. ## statistics

Q2 = D5 = Median Then what is D4 going to be? I am talking about Deciles here..

158. ## math

An earthquake has a magnitude of 6.7 on the Richter Scale.Find the intensity.

159. ## math equation

Detearmine whether -4 is a solution of the inequality x¡Ý4

160. ## math equation

determine whether -4 is a solution of the inequality x is greater than or equal to 4

161. ## physics

What velocity at 60.0 kg jogger a kinetic energy 1,080?

162. ## English

I left out the following statements. Thank you very much. 1)Lady Macbeth is more ambitious than him (Macbeth) OR than he is. Duncan's murder has deprived his life of sleep. 2) She is more of a man than he is. She tries to remove her husband's hesitations

163. ## geometry

5. What is the name of the segment inside of the large triangle?

164. ## Total Quality Management

Find the standard deviation of 32,15,54,18,and 46

what does Radium bond with and what are the reactions

166. ## ochem

how to determine equivalent hyfrogens in hnmr?

167. ## Math

Can someone help me and verify if the answer I picked is correct? 1. Which function does not have a maximum value? a) x^2 + 9 b) g(x) = 9 - x - x^2 c) h(x) = -(x+1)^2 d) k(x) = -4 + x - x^2 The answer is A because letter b,c,d opens the parabola downwards?

168. ## Physics

How much energy is released in the beta decay of 14 C? Since carbon-14 decays into Nitrogen-14, the mass of carbon 14 is 14.003242 and the mass of nitrogen 14 is 14.003074, What I did was: (14.003242-14.003074)u * 931.5 MeV/c^2 = (0.156 MeV/c^2)*c^2 = .156

170. ## Question

About the John Hokins Talent Search (gr 7th-8th) my friend said that I have to be in honor classes to do it. I don't believe her. I know that I have to bring my average up to a 99 or a 100. Talent Search Eligibility To enter the CTY Talent Search, students

171. ## Science

For my science project, it says to write a "Future Research" section to go on the board. Could you just explain to me what exactly goes in that section? I'm so confused!

172. ## Question

IS it too late to enter talent search???? That what my friend said.

173. ## English Essay Topic

I am stuck! I don't know what topic to write about for my research paper! I want to write about something modern and recent but I don't know what! I have been looking through sites but nothing seems to stick out! Can you give me any suggestions?