# Questions Asked onAugust 18, 2011

1. ## physics

A sports car moving at constant speed travels 120 m in 5.1 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.)

2. ## Algebra

2. The Sugar Sweet Company is going to transport its sugar to market. It will cost \$4200 to rent trucks, and it will cost an additional \$150 for each ton of sugar transported. Let C represent the total cost (in dollars), and Let S represent the amount of

3. ## chemistry

Which best describes the physical change of an aluminum soda can after its crushed? A change in the mass of can B change in weight of can C change of volume of can D change in the specific heat of can

4. ## Math

Two small conducting spheres are identical except that sphere x has a charge of -10 micro coulombs and sphere y has a charge of + 6 micro coulombs . After the spheres are brought in contact and then separated,what is the charge on each sphere ,in micro

5. ## Physics

Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is

6. ## Physics

Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is

7. ## PHYSICS

a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.

8. ## MATH HELP

There are 20 red and blue pens in abox. There are 3times as many blue pens as red pens? How many red pens are there? How many blue pens are there?

The slant height of a regular pentagonal pyramid is 6 cm, and the length of each side of the base is 3 cm. Find the lateral area.

10. ## Physics

Three charges q1, q2 and q3 lie along the x-axis. Charge q1=2.5 micro coulomb is at x= 1.5 m, while charge q2= 6.3 micro coulomb is at the origin. Where must the third charge q3 be placed on the axis so that the resultant force on it is zero?

11. ## physics

A motorcycle officer hidden at an intersection observes a car driven by an oblivious driver who ignores a stop sign and continues through the intersection at constant speed. The police officer takes off in pursuit 1.98 s after the car has passed the stop

12. ## trig

how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0

14. ## mathmodeling

Person A opens an IRA at age 25, contributes \$2000 per year for 10 years, but makes no additional contributions thereafter. Person B waits until age 35 to open an IRA and contributes \$2000 per years for 30 years. There is no initial investment in either

15. ## physics

A passenger train is traveling at 30 m/s when the engineer sees a freight train 357 m ahead of his train traveling in the same direction on the same track. The freight train is moving at a speed of 5.9 m/s. (a) If the reaction time of the engineer is 0.43

17. ## Math

Can you check these questions for me? 1. Add: (3x^4-x+2)+(9x^5-x^2+x) 9x^5+3x^4-x^2+2 2. Add: (4x^3-2x^2+x+4)+(9-x^5-x^2+4x) -x^5+4x^3-3x^2+13 3. Subtract:(4x^4+3x+x^2)-(x^2-6+3x^3) 4x^4-3x^3+3x+6 4. Subtract: (5x-6)-(3x^3-2x^2) -3x^3+2x^2+5x-6 5.

18. ## physical science

what is the freezing point depression when 153g of bromine is added to 1000g of benzene?

19. ## ms.pls help me urgent and thanks a lot to you

ms sue thank you so much. and please help me again for this answer so that i can submit to my teacher in english. . “Spoken language was the first form of communication between human beings, it came along with the written language, and writing is the

There are 36 buttons in a jar. There are 3 times as many red buttons as white. 1. how many white buttons are there? 2. how many red buttons are there? My answer is 6,am i right?

22. ## chemistry

1 g alloy of Cu and Zn reacted with excess of H2SO4 gives 60 ml of H2 at STP. What is the % of Zn in the alloy?

23. ## math

write an expression to represent each total and then simplify it cost of 2 pens and 3 notebooks the note books costs 179 each nd the pens 289 each

24. ## physics

A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

25. ## B.V.B

A 10G bullet is short from a 5kg gun with a velocity of 400m/s.What is the speed of recoil of the gun?

26. ## physics

A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

27. ## Math

All of my life I have gotten a C average in math. I have been trying to set a goal to make above a C in math. I don't know why I have trouble with math. Can someone help me?

28. ## chemistry

How do I draw Lewis Structure for BN and CN-

29. ## marketing

the fact that many americans want the convenience of driving gas-guzzling trucks and sport utility vehicles that contribute disproportionately to pollution and global warming is an example of: A. the micro-macro dilemma B. discrepancies in customer value

30. ## earth

Why is the Earth's atmosphere rich in oxygen and poor in carbon dioxide?

31. ## Math

simplify 64/76

32. ## algebra

A 49 foot pipe is cut into two pieces. If one piece has a length of y feet, what is the length, in feet, of the other piece?

33. ## physics

the plumbing in an old house uses lead pipes (which are now considered hazardous). Hot water is run through a section of pipe, increasing its temperature from 19.4 C to 36.8 C. if the pepe is intially 3.90m in length, what is the change in the length of

34. ## physics

A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

35. ## physical science

what is the freezing point depression when 153g of bromide is added to 1000g of benzene?

36. ## biology

Describe the concept of natural selection. Give some examples.

37. ## Math

Solve the following equation for t : 3/t + 2/m = 2

38. ## physics

a body travels half of its total path in the last second of its free fall from rest.what is the duration of fall . you have answered the question before but the answer my mam gave is 3.4sec but you have solved it to 1.4sec .plz solve it for me

39. ## algebra

How do i work out this problem: f-7.8=

40. ## Titration Experiment

Why is unnecessary to measure precisely 25 ml of unknown acid into the beaker?

41. ## marketing

which of the following are components of a proposed marketing plan? a.target market, costs, expected sales results b. website design, costs, expected sales results c. target market, costs, wbsite design d. website design, target market, expected sales

42. ## physics

a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts

43. ## anatomy and physiology

select the correct sequence of nerves and nervous structure that would allow you to feel someone tickling the back of your leg?

44. ## history

Where do archaeologists believe early Americans came from?

45. ## PHYSICS

A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts

46. ## math

100 Duration (d) in minutes what is the cost (c) in rands

47. ## Math

HELP! can you check and help me with some of these? 1. y + 8 = -15 My answer: -7 2.3x = 27 My answer: 9 3. 5 + a = -19 My answer:-24 4. x + 1/3 = 5/6 My answer: NEED HELP WITH THIS ONE 5. -54 = -6y My answer: 9 6. a/3 = -11 My answer: -33 7.19.5 = -39.5 +

48. ## math

1,8,27 what are the next 3 numbers? What is the pattern?

49. ## marketing

a manufacture of drinks, wants to add packaged fruit juices to its existing product line. the manufacturer needs to make some decisions regarding packaging and branding of the fruit juices. these decisions would fall under which variable of the marketing

50. ## math

Evaluate write in simplest form Y - for y = -6 and z = -20 z

51. ## Math

The temperature at 3:00 am was -17 f by noon the temperture was -17.8 f at what time was it the coldest?

52. ## physics

The graphs below show position as a function of time for three different objects. Describe the similarities and differences of these motions. Explain your answer.

is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of

I need help with BIS 155 Data Analysis with spreadsheets final exam. Total of 5 essay questions. Must write a total of 250 words per questions. This class is a excel class.

55. ## Social Studies

One of the most hotly debated topics of national concern is gun control. In a complete essay, compose a proposal to either ban all hand guns or to allow free ownership of all hand guns and trace the history of this proposal. You must show the process it

56. ## Math

Samual is 5 in , taller than Jackie - 8 shelly is 0.7 in taller than Jackie whos taller?

57. ## PHYSICS

A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts

58. ## physics

a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts

is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of

60. ## PHYSICS

A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.

61. ## SCIENCE

a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.

62. ## Math

The table shows the driving distance from certain cities. From To Driving Dis(mi) Pittsburgh Johnstown 55 Johnstown Allentown 184 1. Write a number sentence that compares the mileage from Pittsburgh to Johnstown to Allentown, and the mileage from Allentown

63. ## PHYSICS

a. A 25 nC particle and a – 7 nC particle is interacting with each other at a certain distance. Find the force between the two charges @ 3.0 cm and 1.0 cm Calculate and draw each of the particle’s electric fields. Calculate the electric potential

64. ## Free Enterprise

Is the definition of thinking at the margin basically saying if you don't have any specific numbers or the use of the one additional unit in the situation at hand, then it wouldn't be thinking at the margin?

65. ## history

what animal was a source of food for early hunters yet is not in existence today?

66. ## science

Prepare a comprehensive directory (i.e. scrap book made of newspaper) of related resources with current news, information on forests, forest biodiversity including the people, plants and wildlife that call them home and why it is important to preserve

67. ## Science

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

68. ## CHEM 102

Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

69. ## chem

If 1.0 L of 0.2 M Ca(OH)2 is added to 2.5 L of 0.1 M HCl, the pH of the final solution is? can someone show me the working out of this question? im very confused by it. thankyou

70. ## HUM186

1. What are the social responsibilities of news media?

71. ## Calc AB

eliminate the parameter and write a rectangular equation for x=(t^2)+3 y=2t

how do you write a 4 didget number in expandable form ?

73. ## psychology

HYPOTHETICAL EXPERIMENT: You, as an eager young behavioral scientist, have noted that many people don't wash their hands when they are in a public rest room, unless there is someone there who they believe is watching them. Because you are very aware of the

74. ## math

The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?

75. ## marketing

Budgeting Concepts Paper (10 points). Prepare a 1,050-1,750-word paper in which you compare and contrast two types of operating budgeting concepts. For example, activity-based costing, zero based, line item, management by objectives, performance based,

76. ## MATHS

two circles c1 and c2 meet at the points A and B. CD is a common tangent to these circles where C and D lie on the circumference of C1 and C2 respectively. CA is the tangent to c2 at A. When produced DB meets the circumference of C1 at p. Prove that PC is

77. ## English

What word can I use to replace "fall victim to." Give me some examples please. I'm stumped.

78. ## Life orientation

What are the consequences of alcohol

79. ## algebra

what is 4.14 times 10 to the 2nd power ?

80. ## science

i grew in a cave but i am not alive.What am i

2 2/3 \ 1 5/6

82. ## finanace

Budgeting Concepts Paper (10 points). Prepare a 1,050-1,750-word paper in which you compare and contrast two types of operating budgeting concepts. For example, activity-based costing, zero based, line item, management by objectives, performance based,

83. ## Math

Could I please have some help with this Calcuate the following and simplify where possible 3/7 divided by 2/3 1/4 divided by 5/6 1/3 divided by 5/12

84. ## To Jessie - re English

Read and follow the directions I have already posted for you. Those are your first steps. http://www.jiskha.com/display.cgi?id=1313664789 No one can help you until you do those things, and continuing to repost the same things will not change anything.

85. ## physics

A car travels directly northwards at 10m/s.it then accelarates at 2m/s^2 over a distance of 200m.calculate the car's velocity after 200m.

86. ## algebra

k^2+10k+16/k^2+13k+40 * k^2+5k/k^2-2k-8

87. ## CHEM 102

Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

88. ## math

sander needs to find 73%of \$239. what is a good estimate of the answer

89. ## Math

1. Make a scatterplot of the data in the viewing rectanlge[19030,2010,10]by[0,6,1]. 2. Find the quadratic function given by f(x)=a(x-h)2+k that models the data. 3. Estimate the minimum wage in 1976 and compare it to the actual value of \$2.30. 4.Estimate

90. ## math

The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?

91. ## Math Calc

Find the tangent line to the curve (y-x)^2= 2y+4 at the point (2,6)

92. ## science

What tools and safety standards do scientists use in scientific investigations

93. ## math

This number has 4 places to the right of the decimal point. It has 2 hundreds, 3 ten thousandths, and 1 tenth. It is between 240 and 242. The thousandths place is one less than the ten thousandths and less than the hundredths. What are the six numbers that

94. ## ms. sue pls. help me urgent

pls help me if my english is correct in grammar or relevant to the question thank you. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of ourselves, our motivation, behavior patterns, and likely our

95. ## algerba 1 math

how do i solve the equation: -2(-8-4)^2+-8-4/4 please show step by stap HELP PLEASE

96. ## math

a 4 digit number my 2 nd digitis twice my 3 digit the sum of all my digits is 3 times greater than my last digit the productof my 3rd and 4th digits is 12 times greater than the ratio of my 2nd to 3rd whats my number?

97. ## psychology

Sometimes when going to meet Jamie, Karen mistakes someone else for him. Her motivation and her expectation of seeing him affect her perceptions. Describe one study illustrating either of these factors and its effect on perception.

98. ## Life orientation

In 10-15 lines critically discuss 5 ways in which HIV AND AIDS problem impacts on the community.provide relevent sources to support your claim.

99. ## Science

How do you draw an atom?

100. ## health safety & nutrition

measurements of height and weight provide useful information about: a.intellegience b.overall health status c.adult shape d.development age

101. ## Calculus

I'm having difficulty figuring #2 of this prob;em. I'm utterly clueless. Can someone explain it? Please and thank you. y=x 2. List the roots of the function.

102. ## SCIENCE

a. An engine has a reservoir of 8000 J and has a sink of 1000 J.i. Find the work generated by the engine.

103. ## math

at a local restaurant 45% of the customers order spaghetti. Estimate the probability that 6 of the next 10 customers will order spaghetti.

104. ## Precalc

How would I put this parabola in standard form: x^2-6x+8y-31 Here how I started it: x^2-6x+9=-8y+31 Im not sure what to do from here :(

105. ## health

total number of beats in 24 hours if the rate is 42 beats in 30 sec.

106. ## analytical practical III

what happen when sodium hydroxide react with 5% cider vinigar

107. ## stats

what does it mean to say alpha is set at 0.5

108. ## Comp 155

identify the three key parts of a paragraph.

109. ## Math

What does KAPS mean in Math?

110. ## Math

Simplify -17/21.

111. ## Pre-Algebra

5 and 17/20 - 3 and 1/4

112. ## French

Can someone tell me the french numbers 1-10 in order?

113. ## Math

Can someone please help me with the following Complete the following calculations, making sure you follow the BEDMAS rule for order of operations (^36-1)2

114. ## English

What does it mean " to get along you have to play along"?

115. ## MATH

What happens to the mean, median and mode for the data shown if the outlier is eliminated? 38 33 38 32 33 6b 30

116. ## Calc AB

(1/(x+h))-(1/x) ..simplify

117. ## Calc AB

(x+y)^3 expand

118. ## Pre-Algebra

5 and 17/20 - 3 and 1/4

119. ## math

Omar has the Talk-A-Lot plan. In September, his bill was \$168.00. write an expression and show work

120. ## Math

simplify 13/17

121. ## Math

simplify 14/22