# brooke

Popular questions and responses by brooke
1. ## History

How did European imperialism influence Asia? -Low Chinese demand for European goods led British traders to deal in opium, creating addicts and triggering a war. -Chinese merchants transported European goods from ports to the interior of China,

2. ## physics

Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.

3. ## math: easy

A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next?

4. ## Psychology

With respect to the theory of cognitive dissonance, people can hold contradictory ideas in their minds. If you become aware of the dissonance between two ideas, you could pursue which of the following strategies to reduce the dissonance? B. You can modify

5. ## Physics

Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the collision.

6. ## Chemistry

Please help me N2O5(g) + H2O(l) --> 2HNO3(l) delta H° = -76.2 kJ H2O(l) --> H2(g) + 1/2O2(g) delta H° = 286.0 kJ 1/2N2(g) + 3/2O2(g) + 1/2H2(g) --> HNO3(l) delta H° = -174.0 kJ Calculate delta H° for the reaction 2N2O5(g) --> 2N2(g) + 5O2(g)

7. ## Biology

In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was

8. ## English

Pablo insists that a conclusion should reinforce the thesis statement. Patrice says that the conclusion should follow logically from the introduction. Who is correct? A. Both Pablo and Patrice are correct. B. Neither Pablo nor Pam is correct. C. Only Pam

9. ## algebra

is the average of 27 - x, x - 8, and 3x + 11 is y, what is the average of 2y and 2y/3?

10. ## Math

Which graph represents this system of inequalities? y _ -2

11. ## math

Jose invests money in two simple interest accounts. He invests twice as much in an account paying 10% as he does in an account paying 7%. If he earns \$94.50 in interest in one year from both accounts combined, how much did he invest altogether? Total

12. ## Writing Skills

Which of the following statements about connecting paragraphs is correct? A. A good connection between two paragraphs is an implied transition. B. Two paragraphs may be joined by an action verb. C. You can use a pointing word that that refers to a word in

13. ## Math

A science class has 3 girls and 3 boys in the seventh grade and 4 girls and 1 boy in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she

14. ## math: probability

A locker combination has three nonzero digits, and digits cannot be repeated. If the first two digits are even, what is the probability that the third digit is even?

15. ## Chemistry

A 25.0 mL sample of a 0.100 M solution of aqueous trimethylamine is titrated with a 0.125 M solution of HCl. What is the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added?

16. ## Math

A framed picture 20 inches wide and 36 inches high is shown in the diagram below. The picture will be hung on a wall where the distance from the floor is 10 feet. The center of the picture frame must be 2 3/4 feet from the floor. A) determine the distance

17. ## Math

There are 12 pieces of fruit in a bowl.7 are apples 2 are peaches.What is the probability that a randomly selected piece of fruit will not be an apple or a peach?Justify your answer.

18. ## algebra

The sum of two numbers is 43. The smaller number is 15 less than the larger number. What are the numbers

19. ## US GOV

Which of the following statements concerning the Twenty-fifth Amendment is incorrect? a. It allows the vice president to serve as acting president in the case of presidential disability. b. It allows the vice president alone to declare the president

20. ## Physical Science

Under what circumstances would you expect the shared electron pair to be equal distances on the average from each of the atoms participating in a covalent bond?

21. ## help me for this stupid worksheet

the question is.. why did the ghost decide to haunt city hall? urgh i don't fee like doing it so im hoping someone has the answer :] You might have gotten an answer if you'd told us the source of your question. To which story, poem, play are you referring?

22. ## Physics

Three resistors are connected in series across a battery. The value of each resistance and its maximum power rating are as follows: 7.1Ω and 20.9 W, 29.5Ω and 11.4 W, and 13.6Ω and 12.5 W. (a) What is the greatest voltage that the battery can have

23. ## Calculus

Find the dimensions of the right circular cone of maximum volume having a slant height of 5 ft. See the figure.

24. ## Accounting

Holly County needs a new county government building that would cost \$24 million. The politicians feel that voters will not approve a municipal bond issue to fund the building since it would increase taxes. They opt to have a state bank issue \$24 million of

25. ## algebra

The length of Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. What are the dimensions of Sallly's garden?

26. ## math

Peter played his favorite video game for 10 hours last week. Today, Peter's parents restricted him to 5 additional hours each week for the next 8 weeks. Create the function, f(x), that models Peter's total video game time? Is it f(x)=5x + 10 or f(x)=5x + 8

27. ## Social Studies

1. How did World War 1 change warfare? A. By introducing the atomic bomb B. By showing the effectiveness of trench warfare C. By using tanks, airplanes, and machine guns D. By demonstrating the success of the blitzkrieg 2. Which of the following was a

28. ## math

The area of a square floor on a scale drawing is 100 square centimeters and the scale of the drawing is 1 centimeter:2ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area?

In the multiplication problem at the right different letters stand for different digits, and ABC and DBC each represent a three digit number. What number does DBC represent? Two answer possible; give one

30. ## Math

Write a situation that can be represented by 6n+4.

31. ## math

Ben purchased 5 shirts for \$12.95 each. How much sales tax will he pay if the tax rate is 6%?

32. ## physics

An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to

33. ## Physics

Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

34. ## physics

I place a single negative charge in a region where there is a constant electric field pointed toward the floor. The charge feels a force where?

35. ## Chemistry

Consider the reaction below : P4(s) + 5O2(g) ---> P4O10(s) How many grams of phosphorus react with 4.745 x 10^1 L of oxygen at STP to form tetraphosphorus decaoxide?

36. ## Stats

How many different simple random sample of size 8 can be obtained from a population whose size os 42?

37. ## Biology

Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution?

38. ## I dont understand

everytime I try to ask for hwlp my teacher goes and helps other st8dents when I am tryin to ask him for help on a problem. How do I solve the system of equation? x+y=1 2x-y=5

39. ## Math

from a window 35 meters high, the angle of depression to the top of a nearby street light is 55 degrees. The angle of depression to the base of the streetlight is 57.8. How tall is the streetlight?

40. ## college board

what does the SQ3R method stand for?Example: S- Q- R- R- R-

41. ## Mathematics

10 people share 4 pizzas equally. How much pizza does each person get?

42. ## Math

The seats at the auction were each 0.47 meters wide. If there were 12 seats in each row, how long was each row in meters? (Assume that there was no space between the seats.)

43. ## Chrmisty

Find the pH at each of the following points in the titration of 25 ml of 3.0M HF with 0.3 M NaOH. The Ka value is 6.6x10-4. After adding 25 ml of 0.3M NaOH

44. ## English

In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The committee voted on several of the issues under consideration. B. In what way is a political group considered

45. ## Psychology

When researchers find similarities in development between very different cultures, what implications might such findings have for the nature-nurture issue?

46. ## Psychology

What study strategies can you think of that would make effective use of the levels-of-processing approach to memory?

47. ## Chemistry DR BOB

Under standard conditions of 1 atm and 298.15K, the half-cell reduction potential E,zero for the anode in a voltaic cell is 0.37V. The half-cell reduction potential E,zero for the cathode of the cell is 0.67V. The number of moles, n, of electrons

48. ## Pre- Algebra

You buy x pairs of shoes that each cost \$24.95 the same number of socks that each cost \$4.75 and a pair of pants that costs \$29.99 write an expression in simplest form that represents the total amount of money spent. Would you add them all together?

49. ## math

what is the volume of a cylinder with a radius of inches and a height of 6 inches ?

50. ## Psychology

Martina heard the noise, but could not understand what was being said. Perhaps it was simply the humming of the machines that she heard? She was uncertain whether she should move toward or away from the sound. Martina is having difficulty with? A.

51. ## chemistry

A co-op student designed an experiment to collect hydrogen gas by reacting iron with a hydrochloric acid (HCl) solution. The student’s co-op supervisor suggested that aluminum can also be included to generate hydrogen gas: Fe + 2 HCl → 2 FeCl2 + H2 2

52. ## chemistry

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of mercury / mL, what is

53. ## chemistry

How to calculate the molarity of commercial bleach

54. ## Chemistry

Using Werner Hesienbergs uncertainty principle delta x >h/ (4pie*m*delta v) when mass of electron is 9.11x10^-31kg what is the uncertainty in the position of an electron moving at 9x10^6 m/s with an uncertainty of delta v= 0.01x10^6m/s

55. ## Physics

A 1.5 N force acts on a .20 kg cart so as to accelerate it along a frictionless track. If it is accelerated from rest, how fast is it going after .3m? The answer given is 2.12 m/s but I am not sure how to get to that.

Does this answer seem correct. 2k+3=4k-5 2k-4k+3-3=-5-3 2k-4k=-5-3 -2k/-2k = -8/2 k=4

57. ## Physics

A car of mass = 1200 traveling at 60.0 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires.What is the radius of the turn if = 20.0 (assuming the car continues in uniform

58. ## algebra

A 30ft. cable is cut into 2 pieces. One piece is twice as long as the other piece. Find th length of each piece of the cable.

59. ## history

What are some websites that will help me research African Americans in the colonial times?

60. ## square roots

How do I figure out the square root of 90 over 2

61. ## Physics (12)

A car and train move together along parallel paths at 25 m/s [W]. The car then undergoes a uniform acceleration of 2.5m/s^2 [E] because of a red light and comes to rest. It remains at rest for 45s, then accelerates back to a velocity of 25m/s [W] at a rate

62. ## chemistry

A compound has the following composition. C 54.5%, H 9.10% and 0 36.4% its molecular weight is 88.10. Determine its empirical formula and molecular formula. Take 100 g sample. That gives you 54.5 g C, 9.10 g H and 36.4 g O. Now convert those grams to mols.

63. ## math

The sum of a number times 3 and 19 is at most −26.

64. ## Math

A cookie recipe calls for 5/8 cups of flour and 5/6 cup of sugar. What is the least common denominator of the fractions?

65. ## Accounting

On June 3, a company borrows \$200,000 cash by giving its bank a 90-day, interest-bearing note. On the statement of cash flows, where should this be reported?

66. ## history

12. What was the Cold War? What exactly made it "Cold"? Why was it never "hot"? (Answer every part of the question) (5 points) *

67. ## Algebra

Hello! Suppose that the price per unit in dollars of a cell phone production is modeled by p = \$55 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that

68. ## Math

The price of gasoline increased 25% from July to August. If c = cost of gasoline in July, write two expressions that represent the price of gas in August. If you know the cost of gas in July, which expression do you think would be easier to use to

69. ## algebra

Tickets to a sporting event cost \$6 for children and \$8 for adults. The total revenue from the tickets sold was \$2340. There were 320 total tickets sold. How many children’s tickets were sold?

70. ## Algebra

Sarah's mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. The actual village is 7 miles long. What is the village's actual width? I just want to know if I should convert the feet to miles at one point.

71. ## Math

Ms. Alison drew a box-and-whisker plot to represent her students’ scores on a midterm test. Josh received 53 on the test. Describe how his score compares with those of his classmates. a. About 25% scored higher; about 75% scored lower. b. About 50%

72. ## MATHEMATICS

What is the slope of the line that passes through (2, 5) and (−1, 5)? A. Undefined B. 0 I think its 0

73. ## Physics

Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.527Ω. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8

74. ## Physics

a 4500 kg truck traveling at 17.5 m/s collides with a motionless 1350 kg car. they become locked together. if there is no friction, what is their velocity?

75. ## English

Which of the following is a true statement about an MLA Works Cited page? A. The Works Cited page requires no special formatting. B. The Works Cited page should immediately follow the conclusion and be on the same page. C. The Works Cited page should

76. ## English

Read the following opening sentence of an introductory paragraph and answer the question that follows. Should you ever find yourself in a situation in which you suspect that someone is listening in your private conversation, you might not be as paranoid as

77. ## social studies

10. Which of the following best describes the purpose of the Non-Intercourse Act? (1 point) to forbid the U.S. from trading with Britain and France so the countries would recognize U.S. trading rights to allow U.S. merchants to resume trade with all

78. ## sails math

A chemist has a solution that is 70% acid and another that is 45% acid. How many liters of each should he mix to obtain 300 liters of a solution that is 65% acid?

79. ## US History

Hello, I am filling out a study guide for a test coming up in two days, and I can not seem to find this answer in my text book. Could someone please help? Which of the following is true of the Korean conflict? A. It ended with an enormous American victory.

80. ## Physics

P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?

81. ## science

which of the following is a constant, or control variable, in this experiment?

82. ## physics

A 65.5 kg high jumper leaves the ground with a vertical velocity of 8.1 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s2 .

83. ## Math

A food co.packs 24 cans of tuna into a box. The co.has 768 cans to box. If they sell a full box for \$12,how much money will the food co.make on these boxes?

84. ## precalc

A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile

85. ## Algebra

A ball is thrown from the top of a building. It's height (y) in feet at any given time (x) in seconds is y=-16x^2+240. What is the maximum height of the ball?

86. ## math

Elisa surveyed people in her neighborhood about whether they would like to have a swimming pool in their community park. Of those who responded, 65% were in favor of having a swimming pool. Based on these results, which statement could be true? A. Elisa

87. ## Math

A box of Cereal X contains 36 ounces and costs \$ 4.99. A box of Cereal Z contains 30 ounces and costs \$ 4.50. Which cereal is the better buy ?

88. ## Physics

A motorcycle has a mass of 250kg. It goes around a 13.7 m radius turn at 96.5 km/hr. What is the centripetal force? a. 2.95x10^3 N b. 4.31x10^4N c. 1.31x10^4 N d. 719N

89. ## Chemistry

How many moles of carbon are needed to react with 5.6 moles of hematite (Fe2O3)?

90. ## Chemistry

If 3.79x1024 formula units (molecules) of hematite react with excess carbon, what mass of iron will be produced?

91. ## chemistry

Propane (C3H8) which is used as fuel in BBQ tanks often contains some butane(C4H10). A sample of a fuel mixture known to contain both propane and butane occupies a certain volume at a total pressure of 30 mmHg. The sample is then burned completely to

92. ## Pre-Calc

1.) Describe how the graphs of f(x) = |2x| and g(x) = -|2x| are related. a.) All of these. b.) The graph of g(x) is a reflection of the graph of f(x) over the y-axis. c.) Non of these. d.) The graph of g(x) is a reflection of the graph of f(x) over the x

93. ## Rbowh

On the second problem r+11=19 r+11-_=19-_ r=_ Would it be R+11=30=19-11 R=8

94. ## Health

What is the Affordable Care Act? A. A program that allows people who are at lower risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that covers diet counseling for people who are at lower risk for chronic

95. ## Calculus

Find the equation of the tangent line to the graph of 4y^2− xy − 3 = 0, at the point P=(1,1)

96. ## chemistry

How much heat is needed to change 4.5g of water at 10degrees celcius into steam at 150 degrees celcius?

97. ## chem

calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated

98. ## physics

Assume the driver has a mass of 70.6 kg . What horizontal force does the seat exert on the driver? Answer in units of N

99. ## algebra

use this inequality -4t - 8 less than or equal to 12 to fill in the missing number, t+4 greater than or equal to ___?