# Questions Asked onMarch 12, 2017

1. ## Math / Physics

A block P of mass 3.56 kg is lying on a rough inclined plane of angle θ = 0.73 radians. Block P is attached via a model string that passes over a model pulley to a second block Q of unknown mass M kg hanging vertically as shown in diagram. The coefficient

2. ## Science

Find molecular mass of an element having- Density= 1.56 gm/l Temp.= 65 degree Celsius Press.= 745mm

3. ## Algebra

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 *10^12 miles. Suppose a star is 3.2 * 10^2 light-years from Earth. In scientific notation, approximately how many

4. ## Math

A uniform beam AB of mass 84.78 kg rest against the smooth wall at A and the rough horizontal floor at B. The coefficient of static friction between the beam and the horizontal floor is U=0.249. Calculate the magnitude of the horizontal force P, in N, such

asked by Mike Lian
5. ## science

why does the load reaches 50 meters from the ground will the correct position of the PE and KE that the problem isa crane lifted a 1000 kg load to a height of 50 meters from the ground. at which position are the PE and KE of the load equal

6. ## physics

A cricket ball travelling north at 100km/h is deflected so that it travels north-east at 100km/h. What is the change in velocity of the cricket ball?

7. ## physics

A cricket ball travelling north at 100km/h is deflected so that it travels north-east at 100km/h. What is the change in velocity of the cricket ball?

8. ## english

are these thesis good? 1) Cell phones are becoming increasingly popular and are in use almost anywhere one goes. 2) Now a day computers are so valuable and accessible that you can find them almost anywhere such as schools, offices and public places. 3)

9. ## physics

why does water show abnormal behaviour?

10. ## calculus

A circular swimming pool has a diameter of 20 meters, the sides are 3 meters high, and the depth of the water is 2.5 meters. The acceleration due to gravity is 9.8 m/s2 and the density of water is 1000 kg/m3. How much work is required to: (a) pump all of

11. ## calculus

Find the centroid (¯ x, ¯ y) of the region bounded by: y = 6x^2+7x, y = 0, x = 0, and x = 7

12. ## Chemistry

Determine the Enthalpy of combustion of ethyne (C2H2) using the following enthalpies of formation; Data: DHf°(H2O)= -285.9kj/mol DHf°(2H2)= +226.7Kj/mol DHf°(CO2)= -393.5Kj/mol Equation; C2H2--------->CO2 + H2O

13. ## math

Which of the following fractions is in its simplest form? 16/4 7/8 100/35 3/27

14. ## English

All things considered, it seems reasonable to accept that injecting a small dosage of drugs in animals as it could help and improve of find cures for the help

15. ## Math

Building A is 40m high.The angle of depression of the top of Building B from the top of A is 26 degrees.if the two buildings are 10m apart,find the height of building B

16. ## Algebra

If x=16 is one of the root of the quadratic equation x square-2(7x+16)=0,find the other root.

17. ## math

A trader has shs 250,000,he buys boxes of books at shs 25000 each and boxes of candles at shs 10,000 each,the money spent on books is atleast shs50000 morethan that spent on candles,he buys atleast 5boxes of books and atleast 7boxes of candles.Write down 4

18. ## English

All things considered, it seems reasonable that injecting a small dosage of drugs in animals is acceptable. This practice could help to find cures for the illnesses as well as animals. Having said that people are not acknowledging the positive results of

19. ## Physics

the speed of a train increases from 15 mi/h in a distance of 500 ft. calculate the average acceleration in ft/s squared

20. ## Economics

A firm in a perfectly competitive market has the following cost function: c=1/3q3-5q2+30q+10 in the market- clearing price is 6, obtain the profit maximising level of output?

21. ## chemistry

Water, compared to other substances, has one of the highest specific heat values. What is the advantage of this fact for the human body? -Thank you ☺

22. ## Chemistry

The specific heat of a copper metal is 0.385J/g-°K. How many kJ of heat are needed to raise the temperatue of 1.1 kg block of copper from 27.5°C to 50°C? -Thank you ☺

23. ## Chemistry

A 6.3 g sample of solid NH4NO3 is dissolved in 50g of water, causing the temperature to drop from 24°C to 19°C. Calculate the ∆Hsolution in J/mol. -Thank you ☺

24. ## chemistry

how to prepare CO from this equation in the lab CaCo3 + 2HCl → CaCl2+H2O+ CO2 (g) Or CaCo3 ----(Heat 500 to 600 C0→ Cao +Co2 (g) 2- CO2 + H2 → CO (s) + H2O(g)

25. ## english

Which of the following sentences from Zora Neale Hurston's "What White Publishers Won't Print" best supports the author's opinion that white Americans perceive educated African Americans as a threat? a. Man, like all the other animals fears and is repelled

26. ## Life Orientation

How can you adevise a friend who responds to Avoidance and why it is not healthy in sustaining positive relationships

27. ## Life orientation

Ways in which sport can support nation building?

28. ## Chemistry

Convert the information described below into balanced equation: (a) When a mixture of copper(II) oxide and carbon is heated, elemental copper forms and carbon monoxide evolves into the atmosphere. (b) When a concentrated solution of sodium hydroxide is

29. ## english

Read the excerpt from O. Henry's "The Gift of the Magi. " Which three sentences in this passage reflect traditional stereotypes of men and women? A. White fingers and nimble tore at the string and paper. B. And then an ecstatic scream of joy; and then,

30. ## English

This might look funny and foolish but i seriously need answer.Can someone give the scientific definition of food?

31. ## Statistics

Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin, & Kawachi, 2006). In a representative study, a sample of n 5 100 adolescents with a

32. ## Math

Sarah can afford \$255 per month for 6 years on a car payment, what is the price of a car that she can afford at this time? Assume an annual interest rate of 8%. I do not remember how to solve for problems like this one.

33. ## chemistry

what is the method to prepartion CO from these equation in the lab CaCo3 + 2HCl → CaCl2+H2O+ CO2 (g) Or CaCo3 ----(Heat 500 to 600 C0→ Cao +Co2 (g) 2- CO2 + H2 → CO (s) + H2O(g) i have CaCo3 powder and i do not have any idea how to work in lab???

34. ## Math (Sinking fund)

Kenny opened a sinking fund account and hopes to accumulate \$16,000 in 25 months. The yearly interest rate is 7.8%. How much should he invest per month to reach his goal? Would the answer be 591.58?

35. ## Maths

Find the ratio of 5 days to 20 hours

36. ## Maths

Find the ratio of 200ml to 8litres

37. ## Social Studies

which of the following was an effect of nativism in the United States in the 1920s? A. the Great Migration** B. the Scopes Trial C. the Jones Act of 1917 D. the quota system

38. ## math

A tower casts a shadow of 16m at the same time that a 2.5m post cast a shadow of 4m. How high is the tower?

39. ## Writing

Anyone who knows a good source on how to write a project proposal?

40. ## English 11

Can you send me a good reference about how to create a project proposal for a middle school stude like me? Thanks a lot.

41. ## Social Studies

why did president Roosevelt begin the Good Neighbor Policy? A. He hoped to discourage B. He believed it would end the Depression C. He knew it would be highly popular in the United States D. He wanted to strengthen relations with Latin America in a time of

42. ## math

The ratio of corresponding sides of two similar triangles is 2:3 ,if the longer side is 5cm ,calculate the length of the shorter side

43. ## Physics

Six points masses each of mass m are placed at the vertices of regular hexagonal of side l , the forces acting on any of the masses is?

44. ## Math

(−5)∙(3b−2a)−6(a+2b)

45. ## english

Which literary device is used in this poem? For a Lady I Know by Countee Cullen She even thinks that up in heaven Her class lies late and snores While poor black cherubs rise at seven To do celestial chores. a. onomatopoeia b. repetition c. hyperbole d.

46. ## math

the ratio of corresponding sides of two similar triangles is 2:3 ,if the longer side is 5cm ,calculate the length of the shorter side

47. ## URGENT

Four consecutive integer numbers add to 2. What are the numbers?

(−6)∙(a+2b−3c−4d)−(−2)∙(−4a−3b+2c+d)

49. ## Mathematics

Using a pair of compasses, a ruler and a pencil, construct a triangle CDE in which DE =10cm, DC= 8cm and angle DE= 45 degree

50. ## chemistry

Calculate the amount of silver deposited at cathod when 5 ampere of current is passed for 50 minutes through a solution of AgNO3

51. ## geometry

Given: LM || KN , KL || NM , LP = h­1 = 5 cm, MQ = h2 = 6 cm, PKLMN = 42 cm Find: Area of KLMN.

52. ## Physics

A solid weighs 4.8g in air, 2.8g in water and 3.2g in kerosene. Calculate the ratio of the density of the solid to that of kerosene

53. ## english

Help!!!!! What does the Quote "In winter I plot and plan, In spring I move" mean.

54. ## Chemistry

Human blood contains glucose at a typical concentration of 0.100% (W/V). At this concentration, how many grams of glucose would be found in one liter of human blood?

55. ## Maths

Nine Bottles Hold 4.5 litres of water altogether? how many will 5 bottles hold?

56. ## Physics

An anti-aircraft gun fires at an elevation of 60 degree at an enemy aircraft at 10000m above the ground. At what speed must the cannon be shot to hit the plane at that height? (g=9.8)

57. ## 4th grade math

1. After saving up for while, Melanie saved \$12 of her allowance. She decided to spend 1/3 of that money at the book fair. the book she wanted was \$5. Did she bring enough money to buy the \$5 book. Draw a model to justify your answer. Answer - 12 x 1/3 =

58. ## english

is this thesis good? 1) Cell phones are becoming increasingly popular and are in use almost anywhere one goes. Thank you.

59. ## Business math

No payments were made on a \$3500 loan during its three-year term. What was the annually compounded nominal interest rate on the loan if the amount owed at the end of the term was \$4298.73? (Round your answer to two decimal places.)

asked by Gagandeep Kaur
60. ## Maths

Point P in the curve y=x^3 has coordinates (3,27) and PQ is the tangent to the curve at P.Point Q touches the x-axis.Find the area of the region enclosed between the curve, PQ and the x-axis. My answer: I used differenttiation to find the gradient of the

61. ## Math

Joan is 15 years older than her brother Bill.Eight years from now,Joan will be twice as old as Bill.How old is each at this time?

62. ## Chemistry

If 50.00 mL of 0.250 M barium nitrate are combined with 50.00 mL of 0.400 M sodium sulfate, how any grams of precipitate will form? I'd really appreciate it if someone could walk me through this problem. I don't want the answer, I just want to have a hint

63. ## Math

For traffic that flows on a highway, the headway is the average time between vehicles. On four-lane highways, the probability P (as a decimal) that the headway is at least t seconds when there are 500 vehicles per hour traveling one way is given is P =

64. ## English

Posted by rfvv on Saturday, March 11, 2017 at 6:51am. What is the part of speech of "for my birthday" in each sentence? An adverb phrase or an adjective phrase? Would you check them, please? Can a phrase be either an adjective phrase or an adverbial

65. ## Math

When wrapping a birthday gift in the shape of a rectangular prism for his mother, Kenji adds an additional 2.5 square feet of gift wrap to allow for overlap.How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches wide, and

66. ## English

1. She looked at the person on the table.(When the person is on the table, 'on the table' is an adjective phrase.) 2. She looked at the person on the table.(When she is on the table, 'on the table' is an adverbial phrase.) (How can we distinguish the two

67. ## Math

The two stadiums with the largest capacities are Marshfield Stadium and Bowden Stadium. The capacity of Marshfield Stadium exceeds that of Bowden by 7,341 people. Combined, the two stadiums have a capacity of​ 210,355 people. Find the capacity of each

68. ## MATH

Vail Ski Shop received a \$1,201 invoice dated July 8 with 2/10, 1/15, n/60 terms. On July 22, Vail sent a \$485 partial payment. (If more than one discount, assume date of last discount) a. What credit should Vail receive? Credit \$ b. What is Vail’s

69. ## Advanced Functions

PLEASE READ THE BOTTOM I ADDED ON!! :) the ferris wheel at an amusement park measures 16m in diameter. the wheel does 3 rotations every minute. the bottom of the wheel is 1m above the ground... a) determine the simplest equation that models Megan's height

70. ## Algebra2

What are the vertices, foci, and asymptotes of the hyperbola with the equation 16x^2-4y^2=64? What would the formulas be to find the answers?

71. ## Math

each block in Toms neighborhood is two-thirds of a mile long. if he walks four and a half blocks how far does he walk.

72. ## quick question

Are muscials considered plays?

73. ## Math

Emily walk that a rate of 3 1/2 miles per hour for one and a 1 1/3 hours how far did she walk.

74. ## chemistry

When a 8.45-mg sample of a compound containing carbon is burned completely, 18.1 mg of carbon dioxide is produced. What is the mass percentage of carbon in the compound?

75. ## english

Which four lines in this excerpt from Stephen Crane’s “An Episode of War” show that there were poor medical facilities during the Civil War, and the injured were not properly tended to in the field hospital? a. The drivers were tossing the blame of

76. ## Math

The manager of a store orders canoes that cost \$400 and sells them for 828. what percentage is the mark-up?

77. ## English, Language arts

So often Attean made him feel uncomfortable and ridiculous. But he had to admit that on the days when Attean did not come the hours went by slowly Ths is a line from the book. Is this irony?

78. ## Math

The temperature increased 2° per hour. If the temperature rose 15°, how many hours had the temperature been rising?

79. ## Physics

A 0.145 kg baseball is thrown at a launch angle of 30° and strikes the ground at 18 m/s. How fast would it be moving when it reaches the ground if it's launch angle were 45°? Ignore air resistance. A. 340 m/s B. 210 m/s C. 16 m/s D. 18 m/s

80. ## Math

Solve for the missing variable. 4^x =2 Example: 3^2n+1 = 3^4 Cross out both the threes 2n+1 =4 Subtract 1 2n=3 n=3/2

81. ## english

Which two elements define a story’s setting? a. geographical location b. character descriptions c. time and weather conditions d. plot structure e. dialogue and action The setting is the time and place definitely A and c? never thought about weather

82. ## Math

True or false. Explain why 4^x/4 = 1^x 100(1.06)^x = 106^x

83. ## Social Studies

A person described as a nativist would most likely support what??

84. ## Math

Mr. Kwon has just enough money to buy only 20 mangoes or only 30 oranges. If he wants to buy equal numbers of mangoes and oranges together, how many of each type can he buy with the money?

85. ## Math

Mr. Dinkelspiel bought \$32.56 worth of stamps. He bought 20 more 19-cent stamps than 50-cent stamps. He bought twice as many 32-cent stamps as 19- cent stamps. How many of each kind did he buy?

86. ## Music

1. How is the survival of indigenous music and culture related to the challenges of modernization and environmental degradation?

87. ## math

Graph the equation y = 1 + 2 sin x. This curve crosses the x-axis in several places. Identify all the x-intercepts with 0 < x < 360.

88. ## Physics

The figure is just mass A on top of mass B. There are no forces or anything shown. Block A, of mass 3.2 kg, is on block B, of mass 7 kg, as shown in the above figure. The lower block is on a frictionless surface while the coefficient of static friction is

89. ## Social Studies

Ancient China irrigation 1. Find out the following information: a. When, where, and why did it develop? b. How was it used or practiced? c. Whom did it affect? d. What was the lasting impact this innovation had on China and its people? e. What are some

asked by Help I need somebody not just anybody
90. ## ENGLISH

It was a rainy day, but Joan and I had planned a trip. Joan wanted to go to the beach for a swim. I wasn't sure if we should go. "I think we should wait a little longer... at least until the rain shows some signs of slowing down," I suggested. "We can't

91. ## Science-tectonic plates

What occurrence is caused when transform plates get stuck?

92. ## Politics

Whats is an example of a change in political relations between powers that was in part the result of a change in discourse?

93. ## Science - Plate Tectonics

Where does the source of heat for Earth’s convection currents come from

94. ## Statistics

One hundred students took a statistics exam where the mean score was 78. The distribution was normal. The standard deviation was 4. If Chris earned an 80 on the exam, at approximately what percentile did his grade fall? (Round your answer to the nearest

asked by ShaQuana Mitchell
95. ## English

In this excerpt from A Christmas Carol by Charles Dickens, what does Scrooge's reflection reveal about his character?   And now Scrooge looked on more attentively than ever, when the master of the house, having his daughter leaning fondly on him, sat down

96. ## Science

What is the difference between short-circuiting and overloading? From what I can gather from my textbook, both happen as a result of external resistance being lesser than the sum of internal resistance.

97. ## Math

Brian is baking cookies for Zachary's birthday party if an Bryan uses 1 1/4 cups of flour for every 10 cookies if Brian needs to make 50 cookies and he have 4 cups of flour how much more flower Brian need to finish baking

98. ## College statistics- SCWK450

One hundred students took a statistics exam where the mean score was 78. The distribution was normal. The standard deviation was 4. If Chris earned an 80 on the exam, at approximately what percentile did his grade fall? (Round your answer to the nearest

asked by ShaQuana Mitchell
99. ## Tectonic Plates

How is continental drift different from plate tectonics theory? -Mention 1 type of evidence for plate tectonics

100. ## Geometry

Find the dimensions of a rectangular solid for which the sum of all the edges is 76, the total surface area is 206 square units, and the volume is 165 cubic units.

101. ## Elastic Collisions-Physics

A 0.16 kg billiard ball moving at 1.20 m/s collides elastically with one of the same mass at rest. It continues at a speed of 0.6 m/s afterward in a different direction from before. What is the final speed of the other billiard ball? I thought it was 0.6

102. ## Physics

One guideline for how diffraction affects shadows is that distinct shadows are created if the width of something is a minimum of 10 times greater than the wave’s wavelength. What would be the narrowest width of something to make a distinct shadow with

103. ## Math

Winnies friend marco guessed that her riddle was about the number 79 Why can't 79 be the answer to Winnies riddle

104. ## Social Studies

“As I traveled over Qin Mountain one morning, I met two fairies, of brightness and beauty, Riding on a white deer. I realized they were immortals, And kneeled and begged for the Dao. ‘Go west and climb the Jade Terrace, There are gold pavilions and

asked by Help I need somebody not just anybody
105. ## Accounting

Jim Hurley is an accountant for a local manufacturing company. Jim’s good friend, Mike Kotowski, has been operating a retail sporting goods store for about a year. Mike has proposed that the fee he will pay for Jim’s accounting work should be