# CJ

Popular questions and responses by CJ
1. ## history

Which is an example of literature produced to spread false and negative perceptions of Jews?

2. ## US History

Which of the following statements about the Platt Amendment is true? A - It guaranteed that Cuba would be independent by 1915. B - It prevented the United States from intervening in Cuban foreign affairs. C - It essentially made Cuba a U.S. protectorate. D

3. ## Chemistry

What is the empirical formula for a molecule containing 52.20 grams manganese (Mn0 and 3.80 grams of Carbon (c)?

4. ## Physics

A 2.50g bullet, traveling at a speed of 425m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 270g (a) find the speed of the bullet/block combination immediately after the collision (b) how high does the combination rise above

5. ## Physical Science

1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if

6. ## Math/Trig

The following is a table for the maximum temperature per month, for Boulder, CO Month|° F Jan:45.1 Feb:48.2 Mar:53.8 Apr:62.8 June:71.6 July:81.5 Aug:85.1 Sept:76.6 Oct:66.7 Nov:52.9 Dec45.5 Find the sinusoidal function that models this data. How do I do

7. ## math

solve: I=Prt, for P

8. ## Math/Trig

Solve: 2 sin x - 1 = 0 for 0 degrees is less than or equal to x is less than 360 degrees.

9. ## Physics

A woman stands at the center of a platform. The woman and the platform rotate with an angular speed of 4.00 rad/s. Friction is negligible. Her arms are outstreched, and she is holding a dumbbell in each hand. In this position the total moment of inertia of

10. ## math

Bianca has a total of 25 cent. She has some nickels and pennies. How many different combinations of nickels and pennies could Bianca have?

11. ## calc2

At what constant, continuous annual rate should you deposit money into an account if you want to have \$1,000,000 in 25 years? The account earns 5% interest, compounded continuously. Round to the nearest dollar.

12. ## Chemistry

A star is estimated to have a mass of 1 ✕ 1036 kg. Assuming it to be a sphere of average radius 7.0 105 km, calculate the average density of the star in units of grams per cubic centimeter. round to the correct number of significant figures.

13. ## math

If a polynomial equation p(x)=0 has 3+4i as a solution 3-i 4-3i 4+3i 3-4i

14. ## math

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

15. ## algebra 2

A landscaper is designing a flower garden in the shape of a trapezoid. She wants the shorter base to be 3 yards greater than the height and the longer base to be 7 yards greater than the height. She wants the area to be 295 square yards. The situation is

16. ## Chemistry

Silver chromate may be prepared by the following reaction. 2 AgNO3(aq) + K2CrO4(aq)  Ag2CrO4(s) + 2 KNO3(aq) Calculate the mass of silver chromate produced when 0.623 L of 1.345 M silver nitrate is reacted with 245 mL of 1.89 M potassium chromate.

17. ## Trigonometry

Using the same equation from problem 1, what is the average temperature in Atlanta, GA, for the month of June? equation from #1 is y = 18.25 sin(pi/6 t - 2.09) + 61.15 where t is the time in months and January is t = 1.

18. ## Math/Trig

The average temperature, in °F, for Atlanta, GA is modeled by the sinusoidal function y = 18.25 sin(pi/6 t - 2.09) + 61.15 where t is the time in months and January is t = 1. What is the average temperature for the month of February? How do I do this

19. ## physics

A deep mountain valley is separated by two vertical cliffs. One cliff is 600 meters high and the other is 400 meters high. A cable car runs from the foot of each cliff to the top of the other cliff. At what height above the ground do the two cable cars

20. ## Physics

A wave traveling in the +x direction has an amplitude of 0.50 m, a speed of 5.7 m/s, and a frequency of 18 Hz. Write the equation of the wave in the form given by either Equation 16.3 or 16.4. (Answer in terms of t and x. Assume standard units.) please

21. ## physics

A glass bottle of soda is sealed with a screw cap. The absolute pressure of the carbon dioxide inside the bottle is 1.80 x10^5pa. Assuming that the top and bottom surfaces of the cap each have an area of .0004M^2, obtain the magnitude of the force that the

22. ## Solid Mensuration

A closed cylindrical container 10 feet in height and 4 feet in diameter contains water with depth of 3 feet and 5 inches. What would be the level of the water when the tank is lying in horizontal position?

23. ## Chemistry

Is there a reaction between Sodium Acetate and Copper (II) Nitrate. If so, what is the balanced equation for it? Also, what type of reaction is it does it form a precipitate?

24. ## Algebra 1

4. Two consultants were hired by a company. The total consultant fees were \$18,500. If one consultant had earned \$500 less, each consultant would have been paid the same. How much was each consultant paid? 6. Five cars in a race all finished within 8

25. ## physics

a plane stops from 250 mph in 25 seconds. Calculate the planes acceleration

26. ## Math/Trig

Solve: sin2 x = cos2 x for 0 degrees is less than or equal to x is less than 360 degrees.

27. ## Math/Trig

Find the length of the intercepted arc with radius 2.5 cm and a central angle of 95degrees. Round your answer to the nearest tenth.

Given sine of alpha=2/3 and cosine of alpha is less than zero, find the exact value of the other five trigonometric functions.

29. ## Chemistry

I need help with this problem: 50.0 mL of 4.4 g/L AgNO3 is added to a coffee-cup calorimeter containing 50.0 mL of 4.4 g/L NaI, with both solutions at 25°C. a).What is Î”Tsoln (assume the volumes are additive and the solution has the density and

30. ## finance management

John Roberts has \$42,180.53 in a brokerage account, and he plans to contribute an addtional \$5,000.00 to the account at the end of the year. the brokerage account has an expected annual return of 12%. If John's goal is to accumulate \$250,000.00 in the

31. ## Math

Jeff uses 3/5 size strips to model 3/5 he want to use 10ths side strips to model an equivalent fraction how many 10th size strips will he need

32. ## Mathematics

A game consists of drawing a number from 1□20 a player wins if the number drawn is either a prime number or a perfect square what is the probability of winning this game

33. ## Math

One of Kepler's three laws of planetary motion states that the square of the period, P, of a body orbiting the sun is proportional to the cube of its average distance, d, from the sun. The Earth has a period of 365 days and its distance from the sun is

34. ## mtap

the length of the diagonals are 3x+2 and 5x-8. find x

35. ## Chemistry

If your car gets 28 miles to the gallon, how many liters of gasoline are necessary to travel 157 km?

36. ## Math

How to solve 13.28 divided by 3

37. ## Elementary Math

The question stated: Write a numerator that makes the statement true. 1/2< /10 < 4/5 My answer is 7/10 am I correct< If not please explain. Thanks

38. ## math

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

39. ## Math

When a number is a multiple of 6, what are the possible values for the ones digit?

40. ## math

If X = 4 units, Y = 11 units, and Z = 6 units, then what is the volume of the rectangular prism shown above

41. ## Chemistry

The synthesis of zinc iodide was performed using 1.8912g of zinc and 1.5965g of iodine. Determine the limiting reactant and calculate the theoretical yield of zinc iodide in grams.

42. ## Chemistry AP

What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered with a pH of 4.55 and has a freezing point of -2.0 degrees Celsius? (assume complete dissociation and a density of 1.01g/mL for the solution.)

43. ## Physical Science

5. What reactions occurs when a solution of hydrochloric acid, HCl, is mixed with a solution of calcium hydroxide, Ca(OH)2? (A) Cl + Ca(OH) --> HCa + Cl(OH)2 (B) HCl + Ca(OH)2 --> H(OH)2 + CaCl (C) 2HCl + Ca(OH)2 --> 2H2O + CaCl2 (D) 2HCl + Ca(OH)2 -->

44. ## chemistry

Calculate the amount of heat required to completely sublime 76.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.

45. ## Finance

The most recent financial statements for Retro Machine, Inc., follow. Sales for 2010 are projected to grow by 20 percent. Interest expense will remain constant; the tax rate and the dividend payout rate will also remain constant. Costs, other expenses,

46. ## Math/Trig

Find the radius of a circle with a central angle of pi/7 and a length of the intercepted arc equal to 7.7 cm. Round your answer to the nearest tenth.

47. ## Math/Trigonometry

What is the angular displacement of 1.6 revolutions? Round to the nearest tenth.

48. ## Trigonometry

Verify the identity: cos x + sin x tan x = sec x.

49. ## Trigonometry

Given sinθ=0.76, find θ in degrees to the nearest tenth.

51. ## Math/Trigonometry

1. Solve: 2 cos² x - 3 cos x + 1 = 0 for 0 ≤ x < 2pi. 2. Solve: 2 sin x - 1 = 0 for 0° ≤ x < 360° 3. Solve: sin² x = cos² x for 0° ≤ x < 360° 4. Solve: sin x - 2sin x cos x = 0 for 0 ≤ x < 2p

52. ## Math/Trig

Find the length of the intercepted arc, given a central angle of 3pi/5 and a radius of 4.5 cm. Round your answer to the nearest tenth.

53. ## Physics/math

A deep mountain valley is separated by two vertical cliffs. One cliff is 600 meters high and the other is 400 meters high. A cable car runs from the foot of each cliff to the top of the other cliff. At what height above the ground do the two cable cars

Write and simplify an expression for the perimeter of the rectangle. side A=x+6 Side B=4x-5. Thank you!

55. ## Statistics

The mean IQ among members of a club is 118 with a standard deviation of 9.46. What percentage of the members had IQ scores of 115 or higher?

56. ## finance management

If you deposit money into your account that pays 6.5% interest, how long will it take for you to double your money?

57. ## Algebra

you are about to take a test that contain questions of type A worth 4 points and of type B worth 7 points. You must answer at least 5 of type A and 3 of type B, but time restricts answering more than 10 of either type. In total, you can answer no more than

58. ## Physics

A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 7.0mm thick. Both have the same surface area. Assuming the temperature difference between the inner and outer surfaces of each garment is the same,

59. ## Physics

A ceiling fan has two different angular speed settings: 1 = 475 rev/min and 2 = 170 rev/min. What is the ratio a1/a2 of the centripetal accelerations of a given point on a fan blade? Centripetal acceleration at a distance R and angular speed w is a = R

60. ## Physics

an automobile tire has a radius of 0.350M, and its center forward with a liner speed of v=13.0m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) (b) Relative to the

61. ## Math

Walter and Brian each have a cd collection what is x the number of cds in Walters collections

62. ## Chemistry

An unknown substance decays from 14 g to 3 g over a period of 21 days.

63. ## pre-calculus

find the inverse of this function: y=log(p)+6

64. ## precalculus

find f(7) for: f(x)=square root(x)+5 if x>5 f(x)=6 if x

65. ## Precalc

What are two ways to evaluate end behavior of polynomials?

66. ## pre calculus

find rate of change for p^4-3p^3+500

67. ## music

it is common for a Baroque piece of music to? A: Slow down and speed up B: remain constant in tempo **** C: limit the amount of chords used D: be performed mainly on brass instruments. I chose B as my answer could someone please tell me if I am even close

68. ## History

Do you think Natural Rights have remained the same?

69. ## history

why would colonists resist the end of salutary neglect?

70. ## Human Relations

Give an example of a situation for which you think "Hey" is an inappropriate salutation and why ?

71. ## science

how do layers b and d compare in age? if rock layers between b and d have eroded away,what is the boundary between b and d called

72. ## Science

When are tides in the earth's oceans the highest

73. ## Science

Two ofthe inner planets ____?

74. ## Chemistry

"How many grams of the precipitate will form if 25.5 mL of 4.5 M solution of lead (II) nitrate is allowed to react with 35.5 mL of 3.0 M solution of potassium chloride? What is the concentration of the excess reactant after the reaction has reached

75. ## Geometry

Find the distance CD rounded to the nearest tenth. C=(7,-4) D=(-8,-5) CD=?

76. ## chemisry

What is the correct way to find an equilibrium constant for the dissolution of a specific chemical at various temperatures?

77. ## L.A.

Why should you avoid writing about too many events in a personal narrative? A.to avoid overwhelming the reader with too much info. B.to help you, the writer, stay on topic. C.to allow your self, the writer, room to add many details and descriptions. D. all

78. ## algebra

How can you represent the terms of a sequence explicitly? How can you represent them recursively?

79. ## Maths

The probability that I have to wait at the traffic lights on my way to school is 0.45. Find the probability that on 3 consecutive mornings I have to wait: A) Once B) Twice

80. ## Physics

A penguin has a mass of 13 kg. The penguin slides over the ice for a distance of 50.7 m in 1.7 s before coming to a complete stop. The penguin uniformly accelerates during the entire time period. What is the net force exerted on the penguin?

81. ## computer

You are having problems on your Windows 7 computer and you pull up Device Manager to see if there are any alerts. Two of your devices have yellow exclamation points over them. What does this most likely indicate? A. A missing driver B. A disabled device C.

82. ## algebra 2

How does writing equivalent equations help you solve a system of equations?

83. ## algebra 2

How can you model data with a linear function? can i have example to please

84. ## algebra 2

How can you model data with a linear function?

85. ## Math

Explain how knowing that 5 divided by 8 = 0.625 helps you the decimal for 4 5/8.

86. ## check my work

8. Which of the following is a successful result of the Reconstruction? (1 point) states could limit voting rights in elections more African Americans could go to school segregation kept the races apart or separate sharecropping helped poor blacks own land

87. ## u.s. history

11. Explain two ways in which sectionalism caused conflict or tension in the United States during the early 1800s. Then explain how sectionalism affects economics and politics in the United States today. (10 points)

88. ## u.s. history

Use the quote below to answer the following question. “[T]hese Powers . . . are so distributed among the Legislative, Executive, and Judicial Branches, into which the general Government is arranged, that it can never be in danger of degenerating into a

89. ## u.s. history

Why does George Washington support the Constitution? To what does “a Constitutional door is left open” refer?

90. ## statistics

Consider the events of drawing an ace, then draw another ace, followed by a queen, one at a time without replacement (from a standard deck of cards). What is the probability of drawing an ace, then another ace, then a queen? please show explanation

91. ## math

how do I write 6 2/3 + 3 4/5 to its simpliest form. This is how I did it. Could someone tell me if its write?. Or give me the proper steps to doing this? 6 2/3 + 3 4/5 = 20/15 + 19/15= 39/15= 2 9/15 = 2 3/5

92. ## science

Fan can accelerate from the starting blocks to running 11 m/s down the track in 5 seconds. What is her acceleration?

93. ## math

My digits are 6,0, and 5. I'm not divisible by 5. What number am I

94. ## Statistics

A Today/CNN/Gallup Poll of 1015 adults found that 13% approved of the job Congress was doing in 1995. Find the 95% confidence interval of the true proportion of adults who feel this way.

95. ## chemistry to MathMate

Chemistry - CJ, Tuesday, March 31, 2015 at 10:53pm I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.

96. ## Chemistry

Chemistry - MathMate, Tuesday, March 31, 2015 at 2:56pm 1m = 1000 mm (millimeter) 1 mm = 1000 μm (micrometer) 1 μ = 1000 nm (nanometer) If the tube is 1 nm in diameter, then veryify that 5 μm = 5*1000 nm = 5000 nm = how many diameters? Chemistry -

97. ## Chemistry

Nanotubes are rolled up cylinders of graphite with diameters of about 1nanometer, and lengths in micrometers. (I) If a nanotube is 5 micrometers long, how many diameters does this represent?

98. ## Geometry

an architect designs a rectangular window such that the width of the window is 40 com less than the height. If the perimeter of the window is 500 cm, what are the widths and heights?

99. ## math

Two coworkers picked up some writing instruments at the office supply store. Shane selected 3boxes of pencils and 1box of pens, paying \$8. Terrell spent \$6 on 1box of pencils and 1box of pens. What's the equation for shanes total cost? Equation for Terrell