# Questions Asked onJune 15, 2012

1. ## physics

Some children go tobogganing on an icy hill. The start from the rest at the top of the hill. The toboggan and children have a combined mass of 94 kg. The height of the first hill a is 12.0m the height of b is 0, and the height of c is 3.0m. If friction is

2. ## physics

A crate is given an initial speed of 2.9 up the 29 plane shown in the figure . Assume = 0.13 how far up the plane will it go?

3. ## Critical thinking

I'm having trouble rewriting the ambiguous sentences. I have answered them but i'm not sure that they are right. 2. Please close the door behind you. My answer: Please close the door that is behind you. 3. we heard that he informed you of what he said in

4. ## physics

Two vehicles collide and stick together. After the collision, their combined y-momentum is 2.40 × 104 kilogram meters/second, and their x-momentum is 7.00 × 104 kilogram meters/second. What is the angle of the motion of the two vehicles, with respect to

5. ## Chemistry

A solution of iodine (I2) in carbon tetra-chloride(CCl4) is used when iodine is needed for certain chemical tests. how much iodine must be added to prepare a 0.480 m solution of iodine in CCl4 if 100.0g of carbon tetra-chloride is used?

6. ## chemistry

Carbon Dioxide reacts with water in blood plasma to form carbonic acid. The equation for this reaction is showing on page 51. Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and

7. ## physics

A skier traveling 11.0 m/s reaches the foot of a steady upward 19.6° incline and glides 13.8 m up along this slope before coming to rest. What was the average coefficient of friction?

8. ## maths

1). Is x= 3 a solution of the equation 2x+5=3(x-2)-2 2). The product of a number and number increased by 8 is 20. Convert this statement to an equation. 3). The area of a rectangle is 54 sq meters whose length is 3m more than its width. Convert this

9. ## chemistry

Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

10. ## chemistry

Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

11. ## chemistry

Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

12. ## Physics

Two balls undergo inelastic collision. The y-momentum after the collision is 98 kilogram meters/second, and the x-momentum after the collision is 100 kilogram meters/second. What is the magnitude of the resultant momentum after the collision?

13. ## CHEMISTRY

Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

14. ## PHYSICS

Driving in your car with a constant speed of v = 11.7 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure below. If the radius of curvature of the bump is r = 34.4 m, calculate the apparent weight of a 65.9

15. ## Government

What did westerns monarchies begun adopting in the 19th century that started eroding divine right and paving the way for social contracts

16. ## Chemistry

When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a) Write a balanced chemical equation for the above reaction. b) Show by unit conversion (show conversion factors, ie. 2 g H20 x 1 mole H2O/18 g H2O x ...... x ...... =

17. ## Calculus

Differentiate each function a) y = Cos³ x b) y = Sin(x³) c) y = Sin²xCos3x

18. ## Physics

A wave has a frequency of 325 Hz. What is its period? I did 1/325 = 0.003076 & I answered 0.003 and this answer was wrong. Can anyone help me?

19. ## Algebra

Two hundred tickets for the school play were sold. Tickets cost \$2 for students and \$3 for adults. The total amount collected \$490. How many student tickets were sold?

20. ## physics

An automobile having a mass of 1750 kg is placed on a hydraulic lift in a garage. The piston lifting the car is 0.244 m in diameter. A mechanic attaches a pumping mechanism to a much smaller piston, 1.50 cm in diameter, which is connected by hydraulic

21. ## algebra 2

a flagpole casts a 60 foot shadow when the angle of elevation of the sun is 35 degrees. find the height of the flagpole

22. ## AP Chemistry

What pressure is a person exerting on the floor if the person weighs 145 lbs and has shoes that contact the floor over a total area of 300. cm^2?

23. ## chemistry

What is the molality of a solution composed of 2.55g of acetone (CH3)2CO, dissolved in 200.g of water?

24. ## Physics

Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface, are Copenhagen (55.67° N latitude), and Rome (41.90° N latitude)? The two cities

Except for a few pigeons, Central Park was deserted. Mist hung above the chilled grass. Patches of old snow, scattered here and there, looked like white puddles. The sun hung just above the horizon, casting red and orange streaks across low-hanging clouds.

26. ## science

A 51-g piece of ice at 0 C is added to a sample of water at 7-C all of the ice melts and the temp of the water decreases to 0 .If you used the 8200 Khan you expand in energy in one day to heat 47000g of water at 27-C what would be the rise in temp? What

27. ## Physics

A velodrome is built for use in the Olympics. The radius of curvature of the surface is 19.6 m. At what angle should the surface be banked for cyclists moving at 11.5 m/s? (Choose an angle so that no frictional force is needed to keep the cyclists in their

A cylindrical metal can with a radius of 4.25 cm is floating upright in water. A rock is placed in the can, causing it to sink 0.0230 m deeper into the water. What is the weight of the rock?

29. ## Math

1.) Find the producers' surplus if the supply function is: S(q) = q^7/2+3q^5/2 + 54. Assume the supply and demand are in equilibrium at q= 25. 2.) S(q) = q^2 + 12q and D(q) = 900 - 18q - q^2 The point at which the supply and demand are equilibrium is (15,

30. ## Physics

A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when

31. ## College Algebra

Tina invested \$30,000 in a stock. In the first year, the stock increased in value by 10%. In the second year, the stock decreased in value by 20%. What percentage gain is requird in the third year for Tina's stock to return to its original value?

32. ## physics

Two identical cannons fire cannonballs horizontally with the same initial velocity. One cannon is located on a platform partway up a tower, and the other is on top, four times higher than the first cannon. How much farther from the tower does the

33. ## Biology

The release of eggs and sperm near each other into the water occurs during A spawning. B development. C growth. D all of the above. Is it A?

34. ## Physics

To supply the plumbing system of a New York office building, water needs to be pumped to a tank on the roof, where its height will provide a "head" of pressure for all the floors. The vertical height between the basement pump and the level of the water in

35. ## Physics HELP

An ultrasound transducer used to measure the speed of blood cells is oriented at an angle of 45 degrees to the direction of the blood flow. if the frequency of the sound emitted by the transducer is 1.5 Mhz and the doppler shift is 268Hz, calculate the

36. ## maths

Fill in the blanks- 1). the sum of two consecutive odd numbers is 84, the number are ________ and________ 2). A number multiplied by 6 and then reduced by 3 gives 69, the number is_______ 3). The number of boys is 3/2 the number of girls in class. the

37. ## PHYSICS

A cylindrical metal can with a radius of 4.25 cm is floating upright in water. A rock is placed in the can, causing it to sink 0.0230 m deeper into the water. What is the weight of the rock?

38. ## Physics Velocity Question

The equation for the displacement in meters of an object moving in SHM is x(t) = 1.50 cos (4.20t) where t is in seconds. (a) What is the maximum speed of the object? (b) At what time does it first reach the maximum speed? I already got 6.3m/s for A and I

39. ## Art

Hello, I need to decide whether these 3 artworks are considered realistic or stylistic. Ive decided what they are, and want to make sure that i am correct. The first artwork is a mask, It is called the Mask of Moon Goddess by Inuit, I think its stylistic.

40. ## trig

Give the component form of the resultant vector in the following. NOTE: Answer must be typed in using the following format -- including the parentheses: (#,#). u =(10, 5) -3u=

41. ## PHYSICS HELP

A fibre is fixed at one end it is stretched over a pulley (2.0kg) is the mass. if the mass per unit length of the fibre is 82g/m, calculate the velocity of the wave on the stretched fibre. (please show working)

42. ## Math (Simplest Radical Form)

How do you figure out simplest radical form with variables and/or exponents and/or numbers outside the square root

43. ## physics

(a) Neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 2.0 s? First used standard British units and then express the speed in mi/h for a familiar comparison

44. ## geometry

If m∠BCD = 60 and m∠DEC = 80, what is the measure of ∠DEF

45. ## Physics

A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when

46. ## Physics help

A wave is described by the equation y = (4.5×10−2) sin (1.9x − 3.2t), where lengths are measured in meters and time in seconds. What is the displacement of a particle at position x = 2.7 m at time t = 5.8 s? Note: Remember that the argument of the

47. ## geometry

A card is selected from a standard deck of 52 playing cards. A standard deck of cards has 12 face cards and four Aces (aces are not face cards find the probability of selecting. an eight given the card is not a face card. a club given the card is red. A

48. ## Physics check my answer!

In order to reduce potential danger to the environment, a biohazard laboratory maintains an internal air pressure that is 1% lower than atmospheric pressure. The net force acting on a 1.8-m2 external window of this laboratory due to air pressure is most

49. ## Physics

In this problem, your task is to analyze a lead balloon. The balloon in question is a hollow sphere of diameter of 20.0 m, constructed from a lead foil 0.25 mm thick and filled with helium gas. Below the balloon, a passenger basket is suspended. The mass

50. ## cjs210

Will someone please help me find a website to find the answer to these questions? • Throughout policing history, what has been the role of women and minorities? How has the role of women and minorities changed over time? How has this role change affected

51. ## Physics

A 5000 kg cart carrying a vertical rocket launcher moves to the right at a constant speed of 27.0 m/s along a horizontal track. It launches a 54.8 kg- rocket vertically upward with an initial speed of 33.1 m/s relative to the cart. A) where will the rocket

52. ## maths

Match them- a (a-b) is a rational number 1) distributive property b) a+0=0+a=a 2) associative property c) a*(b+c)=a*b+a*c 3) closure property d) a*b=b*a 4) commutative property e) a+(b+c)=(a+b)+c 5) additive identity

53. ## physics

a body is thrown vetically up from the ground passes the height 10.2 m twice at an interval of 10s .what was initial velocity?

54. ## algebra application

find the amount of interest and monthly payment for loan. Purchasing a living room set for \$3,900 at 12% add-on interest for 2 years. (round monthly payment to the nearest cent)

55. ## math

Write 12,767 in base sixteen.

use the derivatives of y=sinx and y=cosx to develop the derivative of y=tanx

57. ## language arts

The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so.”

58. ## Science

Writeacher, I urgently need you to check these sentences, though I believe they don't make sense. Although I'm not a mechanic, I don't think the use of scientific English is correct. 1) I would like to focus on a kind of technology which is used to

59. ## Algebra

A radio tower is supported by a wire fastened to the ground 60 feet away from the base of the tower. If the slope of the wire is 3/2 approximately how long is the wire

60. ## Calculus

Determine the value of k, so that u = [-3,7] and v = [16,k] are perpendicular.

61. ## math

a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. what is the probablity of choosing a blue marble?

62. ## science

I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

63. ## maths

match them- a) 2(x+3)-5(x-2)=3 1) x= 13/3 b) 7x+2/2=2x+5/3 2) x=4/17 c) 3(2x+5)-2(4x+3)=5 3) x=2

64. ## probablity

A bag of marbles has 3 red, 6 blue, and 3 white marbles in it. What is the probability of reaching in and selecting a red marble? (without looking

65. ## Physical Science

1. You are assigned to take care of a patient who is scheduled to undergo a surgical operation. The doctor told you not to allow the patient to eat for twelve hours. How many minutes is the fasting period? 2. What is the density of a rock (in g/cm3) which

66. ## accounting

kathy burnett works for trinity industries. Her pay rate is 12.84 per hour and receives overtime pay at one and one-half times her regular hourly rate for any hours worked beyond 40 in a week. During the pay period that ended December 31,2013, Kathy worked

67. ## english

I'm writing an essay on Substance Abuse. Its an informative essay and I am having trouble coming up with a topic. Can you please give me some suggestions? I am leaning towards something to do with marijuana possibly...

68. ## accounting

kathy burnett works for trinity industries. Her pay rate is 12.84 per hour and receives overtime pay at one and one-half times her regular hourly rate for any hours worked beyond 40 in a week. During the pay period that ended December 31,2013, Kathy worked

There is a rod that is split into two sections. The left side is copper with value of 390, temp of 100 degrees c and the length is 2m. The right side is silver, 420, temp 20 degrees celsuis, and length 1m. I need to calculate the temperature. 390 X 1 X

70. ## Physics

What do u mean by phase in wave optics??

determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6

72. ## math

whats a math problem for 48 divided by 8 equals 6

73. ## Physics

Life scientists use ultracentrifuges to separate biological components or to remove molecules from suspension. Samples in a symmetric array of containers are spun rapidly about a central axis. The centrifugal acceleration they experience in their moving

74. ## math

a bag has 5 silver 3 gold and 2 brass buttons . what is the probability of choosing a silver then a gold button with replacement

75. ## chemistry

give the 2 systems of measurement. give at least 5 units used in the English system and 5 units in the metric system.

76. ## Physics

A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 43 N/m. The block is pulled from the equilibrium position and released. What is the period of the system?

77. ## Math

3x-4y =9 -3x+4y=12

78. ## Math

0.05x+0.10y=1.30 x+y=19

79. ## SCI -241

Write a 350- to 700-word response that explains the associated health problems of the obesity epidemic and eating disorders. Include examples of what you learned from the WileyPlus® Web Link articles you read. Address the following:

80. ## cjs210

Wll someone please help me find a website to find the answer to this question? describe the recruitment and selection process for a police officer?

81. ## geometry

In how many different ways can the top eight new indie bands be ranked on a top eight list? The top hit song for each of the eight bands will compete to receive monetary awards of \$1000,\$500,\$250,and \$100,respectively. In how many ways can the awards be

82. ## Math - Compound Inequalities

A car rental agency charges A. \$60 per day or B. \$30 a day plus \$.30/mile. If you plan to drive 200 miles in one day, which is the best plan for you?

83. ## english

how do i write a thesis

84. ## Calculus

Evaluate, rounding to two decimal places, if necessary a) ln 5 b) ln e² c) (ln e)²

85. ## English Writing

Apology letter Please help me thanks in advance? Hotel manager is writing a letter to one his customer because there is no room available for him. He came to watch football match with his family now. hotel manager put him up in the motel and paid for that.

86. ## science

I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

87. ## maths

Give reasons 1) Every parallelogram is not a rectangle. 2) Every rhombus is not square. 3)It is possible to have exterior angle of a regular polygon as 40 degree. 4) It is not possible to have interior angle of regular polygon as 145 degree.

88. ## hum/111- critical thinking

why do you think timing is important when you are building a persuasive case?

89. ## maths

If hair bands cost 75 pence for five, how many would you be able to buy for £2.70?

90. ## physics

reaction of lead nitrate with sodium iodide

91. ## geometry

If m∠BCD = 60 and m∠DEC = 80, what is the measure of ∠DEF

92. ## geometry

On a vacation, Bridget and her family traveled 225 miles at 67 mph. How long did the trip take? (Round to the nearest hundredth

93. ## Math

Need to make a monthly amortization schedule. Borrowing 16000 over 4 years at 3.5%. Do I need to calculate for 48 months in order to do this project correctly? I do all the calcs for 48 months and I still end up with approx a payment left over?

94. ## Management Accounting

Subtask 3b: The Antigua Blood Bank, a private charity partly supported by government grants, is located on the Caribbean island of Antigua. The Blood Bank has just finished its operations for September, which was a particularly busy month due to a powerful

95. ## English

What is the subject in Thank you

96. ## acc/291

A measure useful in evaluating the efficiency in managing inventories is:

97. ## child care management

According to leeds,at snack time,children sould be given _ of each food foreach yea of theie lives.

98. ## Statistics

among customers- 70% buy popcorn, 40% buy ice cream, and 25% by both. Suppose you pick one customer at random. Find the probability the customer buys popcorn or ice cream.

99. ## math

1-1/square root 3

100. ## chemistry

what the rules to be followed in performing he 4 fundamental operaions using scientific notation?

Write the balance chemical equation for lime.

1.Draw an atomic structure for hydrogen combining with chlorine. 2. Write the full name of elements in copper sulphate and radicals followed by its symbols and balance the equation.

Write a balance equation for alluminium nitrate and draw an atomic structure for alluminium nitrate...

104. ## finance

how do we end up with salvage value if the item is depreciated the cost of the item either over a period of years or all in one year? How does salvage value work?

105. ## Chemistry

Show how an atomic structure look like

I need help with a assignment on a 150 to 300 words that summarizes the steps to be taken in the revision process.

107. ## history

Which of the following was not an innovation that came about due to militarization in the 1800's?

You just move into your new home for which you have a 30 year mortagage of \$60,000 at 7%. Your new neighbor Jack tells you that if you double the amount of your payment each month you will cut the length of time you pay in half. Is he correct? would the

109. ## Calculus

Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) thank you in advance :)

110. ## Calculus

Determine the equation of the tangent line to the curve y = 2x²-1 at the point where x = -2

111. ## math

what is the answer of 16=4*4= 81=9*9= 100=2*5*2*5= 12*12= 144=3*4*3*4=

112. ## Physical Science

What are the different kinds of overlapping sciences?

113. ## physics

assume a diver breathes a mixture of Oxygen and Helium. by weight what ratio of helium to oxygen must be used if the diver is at an ocean depth of 50 meters?