# Questions Asked onJuly 3, 2012

1. ## Spanish

Fill in the blanks with the subjunctive form of the verbs. 1. Me alegro de que el ecoturismo (ser) un buen negocio (business). 2. Es una lástima que tú no (reciclar) el vidrio. 3. No crees que ellos (querer) usar energía solar. 4.Ojalá todos nosotros

2. ## Calculus

a piece of wire 12 ft. long is cut into two pieces. one piece is made into a circle and the other piece is made into a square. Let the piece of length x be formed into a circle. allow x to equal 0 or 12, so all the wire is used for the square or for the

3. ## Spanish

Fill in the blanks with words from the box. estés molesta plástico recicle sea Es posible que reciclar (1) una de las mejores formas de proteger el medio ambiente. Quizás no te das cuenta (you're not aware), pero reciclar vidrio, aluminio y (2) ahorra

4. ## physics

Two charges, -17 and +3.6 µC, are fixed in place and separated by 3.2 m. a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie between

5. ## Spanish

ESTRUCTURA | 13.1 The subjunctive with verbs of emotion Emociones Completa cada oración con la forma correcta del verbo apropiado de la lista. Usa cada palabra sólo una vez The words in () are my guess. I need help with clarification and spelling

6. ## physics

A loaded truck is going at a speed of 36 km/hr and a car starts at point 3 km behind the truck with an acceleration of 2 m/s. when will the car overtake the car? What is the distance covered by the car before it overtakes the car?

7. ## math

how many cords of wood could you fit in a room that is 3yards long,3 yards wide,,and 2 yards high?

8. ## Math: Rounding off

-Round off .6752 to the nearest tenth, hundredth, and thousandth.- How do you round this off when there's a decimal?

9. ## Spanish

13.2 The subjunctive with doubt, disbelief, and denial Completar Completa cada oración con la forma correcta del verbo apropiado de la lista. word bank haber ir llegar querer resolver ser 1. No creo que el gobierno el problema de la contaminación

10. ## calculus

In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones of people alive at the time. If the half-life of strontium-90 is 27 years, what fraction of the strontium-90 absorbed in 1962

11. ## Algebra

Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary. 10 – x < 4

12. ## chemistry 1046

Calculate the solubility (in grams per 1.00 102 mL of solution) of magnesium hydroxide in a solution buffered at pH = 9 the ksp of Mg(oh)2 = 2.06e-13

13. ## Chemistry....help

If 0.500L of dry N2 was bubbles into an inverted flask through water to saturate it at 25.0C, what would be the total volume at the lab atmospheric pressure. Our pressure was : 757.5 mmHg

14. ## math

the land area of a country is about 5.0million square miles, and the population is about 700 million people.what is the average population density? simplfy answer and round to one decimal place as needed

15. ## math

What is the diameter of a barrel that is 3.5 ft tall and holds 11 cubic feet of water

16. ## algebra

Solve using the elimination method. Show your work. If the system has not solution or an infinite number of solutions, state this. -2x-8y=-42 -4x+6y=-18

17. ## Calculus

Find a unit vector in the direction of v = (1,-1). Write your answer as a linear combination of the standard unit vectors i and j. Round each component to the nearest hundredth, if necessary. A 0.71i - 0.71j B 0i - 0j C 1.41i - 1.41j D 1i - 1j E 2.83i -

18. ## Chemistry 1046

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock contains 65.7% of the amount of uranium- 238

19. ## chemistry 1046

Solve an equilibrium problem (using an ICE table) to calculate the pH of each solution. a solution that is 0.266 M in CH3NH2 and 0.134 M in CH3NH3Br. Kb = 4.4e-4

20. ## Grammar

What is the Singular possessive of -fern-.... and WHY?

21. ## physics

a tire inflated to a gauge pressure of 2 bars has a nail 3mm in diameter embedded in it. what is the force tending to push the nail out of the tire?

22. ## physics

a tire inflated to a gauge pressure of 2 bars has a nail 3mm in diameter embedded in it. what is the force tending to push the nail out of the tire?

23. ## english

how this sentence could be transformed into positive degree and superlative degree : prevention is better than cure

24. ## geometry

Quadrilateral ABCD is similar to quadrilateral WXYZ. Side BC is 8.6 units in length, side AD is 23.1 units, and side WZ measures 15.8 units. What is the measure of side XY?

25. ## physics

An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of -6.3 µC at this spot?

26. ## Physics

What is the force at which a bowling ball when it sticks the pins given the final speed of the bowling ball. Now account for friction and angular rotation of the ball

27. ## Physics

PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?

28. ## Physics

Two crewmen pull a boat through a lock, as shown in the figure. One crewman pulls with a force of F1 = 145 N at an angle of θ = 32° relative to the forward direction of the raft. The second crewman, on the opposite side of the lock, pulls at an angle of

29. ## physics

a wire 4m long carrying current of 5A place at right angle to B of 6web/m2 the force experience by the wire in SI unit is A LONG SPRING IS STRETCHED BY 2Cm and P.E stored in it is U if the string is stretched by 10 cm then the P.E stored would be

30. ## Calculus

Find the dot product of (u+v)*w u=-1,3 v=2,4 w=2,-5 Answer choices: A:37 B:-37 C:-29 D:-33 E:29 F:9

31. ## Physics

a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?

32. ## algebra

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x-6y=2 -8x+6y=-26

33. ## Physics

The third floor of a house is 9 m above the street level. How much work (in kJ) is required to lift a 700-kg piano to the third-story level?

34. ## Math

find the value of the expression 3*45 divide 9-2 (10-6) -4 divide 2

35. ## biology

Both the description and the definition of ecology and its significance to you and the society

36. ## math30

The growth of a \$40 000 investment is shown in the table. Time (years) Value (\$) 0 40 000 1 42 600 2 45 369 3 48 318 4 51 459 5 54 803 Use the exponential regression function on your calculator to get the function. Round a to the nearest dollar and b to

37. ## math30

The mass of a radioactive sample is represented in the graph below. The initial mass of 32 mg decays to 8 mg after 21 hours. 1)What is the half-life of the radioactive sample, in minutes? 2)Solve each equation. a. 4 8x-1 = 8 b. 3^(2x-5) = 1/27x

38. ## Physics

A man (80kg) jumps from a 17 storey balcony (51 metres). How long would it take for him reach the ground? ~Sorry for the morbid example, we were just having a chat about it lol

39. ## History

Do you think investing in the stock market today would be a better or worse idea than it was in the 1920's? Explain why you think so.

40. ## physics

A moving particle encounters an external electric field that decreases its kinetic energy from 9100 eV to 6630 eV as the particle moves from position A to position B. The electric potential at A is -59.5 V, and the electric potential at B is +26.1 V.

41. ## Algebra

Find the product for these expressions: 1. {(x+3) + y}^3 2. (a^(x+1) + b^(x-2))(a^(x+1) - b^(x-2)) In number 2, I came up with a^(x+1)^2 - b^(x-2)^2 but am little apprehensive about this. I hope you can enlighten me on both numbers.

42. ## Statistics

A game at the state fair has a "guesser" guess the month of your birth. You win a prize if he misses your month by more than 2 months (for ex: if you were born in April, and he guesses February, he wins; if he guessed January, you win). For simplicity,

43. ## physics

: a loaded truck with uniform acceleration covers the distance between two points 60m apart in 6 sec.its velocity as it passes the first point is 5 m/s .find the velocity at second point

44. ## Physics

Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

45. ## physics

How much heat is needed to be supplied to a 3.5 kg cylindrical rod if its volume changes by 1/4 of its original size? Assume that it is initially at 20K and that c = 2 cal/g.C and α = 8x10^2/C

46. ## math

write a short paragraph on rational nu mber

47. ## Chemistry

What mass of sucrose (C12H22O11) would you combine with 5.28 102 g of water to make a solution with an osmotic pressure of 9.14 atm at 298 K? (Assume a density of 1.0 g/mL for the solution.) I came up with 67.5 but no luck...help please!!

48. ## Chemistry 1046

A metal, M, of atomic mass 91 amu reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.05-g sample of the salt is dissolved

49. ## Chemistry 1046

If a sample of Sr-90 initially contains 1.1 mmol of Sr-90, how many millimoles are left after 25.20 years? any ideas on where to start??

50. ## chemistry 1046

A.Determine the pH of the solution. a solution that is 1.17% HCl by mass (Assume a density of 1.01 g/mL for the solution.) B. Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of

51. ## Grammar and composition

on page 807, Exercise B it wants me to amswer the questions and name the reference book I used to find the answer. Question 10 is "What is the number of Buddhists in North America?

52. ## Grammas and Composition 11th grade

I PURCHASED A USED BOOK TO COMPLETE A CORRESPONDENCE COURSE. PAGE 291 AND 292 IS MISSSING AND I NEED QUESTIONS 15-20. CAN SOMEONE HELP ME?

53. ## science

if you ride a bike an average speed of 4km/h and need to travel a total distance of 28km how long will it take you to reach destination. show work

54. ## math integrations

integral(tanx)dx

55. ## physics

the resistance of a certain length wire having diameter 5mm is 10 omega if the diameter is change to 10 mm the new resistance in omega is

56. ## physics

the resistance of a certain length wire having diameter 5mm is 10 omega if the diameter is change to 10 mm the new resistance in omega is

57. ## SCIENCE

describe each stage of the flow of information starting with DNA and ending with traits

58. ## Foreign languages

Can you check if the following passive tenses are possible? Thank you. 1) The roof was being fixed The cathedral is being restored My wallet has been taken The dog is going to be taken for a walk 2) Who was America discovered by? Was this CD bought by

59. ## trig

Find the radius of a circle which a 59-foot chord subtends an angle of 12degrees at the center. I Just Want To See The Illustration. I Can Handle The Rest. Thank You In Advance =)

60. ## science

How does this work, I've been asking questions but no one ever answers

61. ## Geometry

Christopher wants to determine how far away a helicopter is from where he is standing. He knows the helicopter is sitting on the edge of a roof of an apartment building that is 400 feet high and 1,050 feet from where he is standing.

62. ## Chemistry help!!

Mole percent composition of earths dry atmosphere is 78% N2, 21% O2 and 1.00% Ar. Using the atmospheric pressure you recorded in the lab during this experiment (757.5 mmHg) and an ambient temperature of 25C, calculate partial pressures of these 3 gases.

64. ## physical science

what physical quantity does full glass water have over empty glass that cause it to resist change in motion over empty one?

65. ## algebra

Determine the slope of a line passing through the points (2, 9) and (0.66, 9).

66. ## algebra

A building is 4 feet higher than twice the height of a tree. Define variable expressions for the height of the building and the height of the tree? A companys profit for the third quarter is 22,300 more than the profit for the first quarter. Define

67. ## Art

I left out the following sentences. Thank you, Writeacher. 1) "I'll drive you to the train station." (she/agree) She agreed to drive me to the ... 2) "If I were you, I'd run back home." (she/advise). She advised me to run back home. 3) "I won't drive you

68. ## Alg I

Domain and Range of 5x-3y=6

69. ## History

in the Treaty of Versailles, which nation’s approach best reflects a sincere desire to prevent another war, the policies of the United States or the policies of France? Why?

70. ## Art

I left out a sentence. Can you help me better express the following instruction? 1) Complete the following sentences with the past simple, past perfect, and past continuous. 1) My friend..... (be) upset because someone.....(steal) ........

71. ## Art

I left out these last sentences on grammar.Thank you, Writeacher. 1) If the machine stops, you press this button. Incorrect: if the machine stops, you will press this button. 2) Complete the following sentences with who, which, whose. Write the relative

72. ## math

suppose you drive a car with an average gas mileage of 32 miles per gallon.If you plan to take a 2500-mile cross country trip,how many gallons of gasoline should you expect to use?

73. ## Art

I still have a few other sentences to check. Thank you, Writeacher. 1) " I've spent all my pocket money on that book!" (he/exclaaim) He exclaimed that he had spent all his pocket money on that book. 2) "I'm going on a school trip tomorrow" (he/inform/his

74. ## math

78.125gal round to a decimal in gas terms

75. ## chemistry

a piece of iron reacts with sulfuric acid and produces 250 dm^3 hydrogen gas at 27 degree celsius temperature and 99.99 kPa. Find out the mass of that piece of iron?

76. ## Sci 230

I live in Texas, what local ecosystem or any ecosystem could I use for an assignment. I have to include its hierarchy of interactions and its biodiversity. I also have to answer how is the ecosystem dependent on the biodiversity as well as one threat to

77. ## chemistry

a piece of iron reacts with sulfuric acid and produces 250 dm^3 hydrogen gas at 27 degree celsius temperature and 99.99 kPa. Find out the mass of that piece of iron?

78. ## History

To what extent does the Treaty of Versailles reflect the importance of taking responsibility for one’s actions?

79. ## math

a decameter is times larger than a meter?

80. ## science

Why do we have a leap year every four years?

81. ## Foreign languages

Can you check these two questions, please? 1)Who coined the term Lost Generation? Who were its most representative writers? 2) Can you briefly summarise the plot of Fitzgerald’s Great Gatsby.

82. ## geometry

In triangle ABC, DE is parallel to AC. Side AD measures 5.3 units, side DB measures 8.0 units, and DE measures 4.8 units. What is the measure of AC?

83. ## chemistry

how many joules of energy must be removed from 325g water at 35 degress celsius to form ice at 0 degress celsius?

84. ## College Physics

A convergent lens forms a real image 2.41 times the size of the object. The distancebetween object and image is 62.6 cm.Find the distance of the focal point fromthe center of the lens.Answer in units of cm

85. ## Chemistry - Correction

I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following

86. ## Calculus..

5. Eliminate the parameter and write the corresponding rectangular equations: x=3-2sin theta and y=1+5 cos theta

87. ## math

Convert 24 quarts to liters?

88. ## Chemistry

X=\MX=\MX=\M What is this?

89. ## math

Ben rolls a standard number cube (sides labeled with numbers 1 through 6). Find the probability that Ben rolls a number greater than 2 or an even number.

90. ## math

suppose you drive a car with an average gas mileage of 31 miles per gallon.if you plan to take a 3000 mile cross countrytrip,how many gallons of gasoline should you expect to use?

91. ## math

How many cords of wood could you fit in a room that is 5 yards long,5 yards wide,and 2 yards high?

92. ## math

The land area of a country is about 5.0million square miles, and the population is about 700 million people.wh

93. ## math

an airplane travels a120 mile in 15 minutes.what is its speed in miles per hour

94. ## physics

Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

95. ## Science

A 500g aluminum pot containing 250mL of water in the pot increases from 13.2 °C to 89.1 °C. Calculated the heat absorbed by the pot and water. I don't know the official approach to this question, somebody help!

96. ## spanish

Oraciones Transforma los elementos en oraciones usando el subjuntivo o el indicativo. Modelo algunos animales/ ir a morir/ a menos que / haber / leyes para protegerlos Algunos animales van a morir a menos que haya leyes para protegerlos. la ciudad / ir a

97. ## Calculus

"Leave the answer as a definite integral, but indicate how it could by evaluated by using the fundamental theorem of calculus." I solved the problem to a definite integral. Proceeding via the fundamental theorem, would involve finding the indefinite

98. ## Art

Could you please tell me which if the word choice is correct? Thank you, Writeacher!!! 1) He exclaimed that he had spent all his pocket money on that book. 2) "I'm going on a school trip tomorrow" (he/inform/his mum). He informed his mum that he was going

Neville Corporation, an amusement park, is considering a capital investment in a new exhibit. The exhibit would cost \$174,777 and have an estimated useful life of 9 years. It will be sold for \$69,200 at that time. (Amusement parks need to rotate exhibits