# Questions Asked onApril 19, 2014

1. ## Physics

A mass accelerates uniformly when the resultant force acting on it is......?

2. ## College Algebra

The number of crimes that occurred in a certain city per 1000 people had decreased from 45.6 in 1920 to 45.1 in 1970. Find the average rate of change in the number of crimes per 1000 people that occurred from 1920 to 1970.

3. ## Chemistry need help

using standard potentials given in the appendices calculate the standard cell potentials and the equilibrium constants for the following reactions. Zn(s)+( Fe^2+(aq)) ---> (Zn^2+(aq))+ Fe(s) If anyone can show work, then I can do the rest of my homework by

4. ## Calculus Please Need Urgent2 :/

Consider the function f(x) whose second derivative is f''(x)=8x+4sin(x). If f(0)=3 and f'(0)=2, what is f(x)? f(x)=??

5. ## CHEMISTRY HELP !!!!

As a standard voltaic cell runs, it "discharges" and the cell potential decreases with time. Explain.

6. ## English

1.) Anyone can publish information on the Internet without fact-checking it. A.) True************************ B.) False 2.) Public records are most likely to contain valid information than secondhand reports. A.) True******************************** B.)

7. ## physics

a mass of 10 kg is suspended from a spring balance .it is pulled aside by a string so that it an angle 60 with the vertical.the new reading of the balance is ??

8. ## Physics

A physics student who is late for school is trying to catch her bus. The student is 10 m behind the bus as the bus starts from rest and begins to accelerate at 0.5 m/s2 away from her. If the student continues running at a steady 3 m/s, will she catch her

9. ## CHEMISTRY HELP !!!!

a.) which of the following reactions should have the larger emf under standard conditions & why? CuSO4 (aq) + Pb (s) goes to PbSO4 (s) + Cu (s); Cu(NO3)2 (aq) + Pb(s) goes to Pb(NO3)2(aq) + Cu(s) b.) Calculate delta G for the reaction.

10. ## Physics

The anode (positive terminal) of an X-ray tube is at a potential of +125000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode? (b) If

11. ## physics

Please help me !!! for solution of this question Water enters a horizontal pipe with a rectangular cross section at a speed of 1.00 m/s. The width of the pipe remains constant but the height decreases. 27.3 m from the entrance, the height is half of what

12. ## math

In triangle ABC, angle B = 3, angle A and angle C = 8 angle A. How many degrees are there in angle B ? a. 15 degree b. 30 degree c. 45 degree d. 60 degree e. 120 degree please answer and explain

13. ## calculus help

What constant acceleration is required to increase the speed of a car from 22 mi/h to 50 mi/h in 3 s? (Round your answer to two decimal places.)

14. ## Math

Write each logarithmic expression as a single logarithm: Log 2 + 3 log 1

15. ## chemistry first yera

A 0.4 g sample of monobasic acid requires 16cm3 of 0.1 mol per dm3 of NaOH for complete neutralization . what is the relative mass of the acid?? Plz ans me urgent

16. ## world history

How has the global economy changed after the Cold War?

17. ## math

If r = square root 3V/pi*h , by what number must we multiply V in order to multiply r by 9 ? a. 3 b. 9/2 c. 9 d. 18 e. 81 please answer and explain

18. ## Calculus Help

A high-speed bullet train accelerates and decelerates at the rate of 4 ft/s2. Its maximum cruising speed is 90 mi/h. (Round your answers to three decimal places.) (a) What is the maximum distance the train can travel if it accelerates from rest until it

19. ## Physics

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.0 m long, 2.2 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from

20. ## statistics

The average age for licensed drivers in a county is µ= 42.6, σ= 12 and the distribution is approximately normal. A county police officer was interested in whether the average age of those receiving parking tickets in the county differed from that of the

21. ## Dynamics

What is the minimum spring compression delta necessary to cause m2 to leave the floor after m1 suddenly released with zero velocity? Measure delta from the unstretched length of the spring and assume that all the motion is in vertical direction

22. ## Finance

Capital Budgeting Problems I. Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for

23. ## Physics

While driving her new fuel efficient mini-car, Zelda changes her velocity from 22 km/h [forward] to 85 km/h [forward] while driving 2.0 × 102 m. What is her average acceleration ?

24. ## Chemistry

What is the activity of a 18.9 μCi sample of carbon-14 in becquerels?

25. ## algebra

Rj and Joshua are running in the fun run. Rj runs at 7kph and Joshua at 5kph. if they start at the same time, how long will it be before Rj is 1/4 km ahead of Joshua?

26. ## physics

Water enters a horizontal pipe with a rectangular cross section at a speed of 1.00 m/s. The width of the pipe remains constant but the height decreases. 27.3 m from the entrance, the height is half of what it is at the entrance. If the water pressure at

27. ## Math

Glucose is a common type of sugar. One glucose molecule is made up of 24 atoms. 1/4 of the atoms are carbon, 1/2 are hydrogen atoms, and 1/4 are oxygen atoms. Part A: How many oxygen atoms are there in 50 atoms? Part B:Explain how you found your answer for

28. ## Body Systems terminology

Which one of the following statements about colds is false? A. Colds are caused by bacteria. B. Colds result from contact with other affected people. C. Chicken soup and antibiotics work equally well as treatment for colds. D. There’s no immunity to

29. ## chemistry

what is the concentration of phosphate in the original lake water sample if the unknown lake water sample

30. ## Physics

The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the membrane is 0.000000008 m. What is the

31. ## naths

What is the equation of the line which has gradient 2, and passes through midpoint of (3,4) and (5,6)

32. ## maths

Write the equations below in the form y = mx + c. State how many solutions each systems of linear equation have. 3x = 6y 2y - 6x + 2 = 0

33. ## icse

aluminium carbide+water gives aluminium hydroxide+methane

34. ## Math

Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for each of the projects are given

35. ## math

there are 13 boys and 14 girls in mrs greens class if 3 of the students are absent today what is the ratio of students absent to students present?

36. ## math

The base of triangle ABC is one half the altitude.The altitude of triangle DEF is one half its base. If both triangles are equal in area, what is the ratio of the altitude of triangle ABC to the altitude of triangle DEF ? a. 1:4 b. 1:2 c. 1:1 d. 2:1 e. 4:1

37. ## Physics

A 245 g toy car is placed on a narrow 70-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.0 kg track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it

38. ## math

Arc AB of circle O contgains 72 degree and is 6 pi long. Find area of circle O. a. 9 b. 36 c. 30 pi d. 225 pi e. 900 please answer and explain

39. ## english

Compare the use of verbs in the poems "quickdraw" and "the farmers bride"

40. ## criminal justice

how are Ethical Egoism and Virtue Ethics the same and what are the contradictory elements between the two systems

41. ## english

A comparison of the poems "quickdraw" and "the farmers bride"! Discuss the techniques used, analyse the language/structure/form explore layers of meaning and comment on the effect of the reader. E.G compare how the poets use verbs or metaphore or imagery

42. ## physics

a 6.0 kW electric oven is connected to a fuse box by a cable of resistance 0.25 ohms. when the cooker is switched on at full power, a current of 26 A passes through it. Calculate the potential difference between the two ends of the cable and the power

43. ## SkatingDJ

4. The number cube shown is rolled and the spinner shown is spun. Find P(an odd number and yellow). The number cube goes up to five. The spinner has four spaces. two are yellow, one is blue and 1 is green. 1/4 3/4 3/5 3/20

asked by PLS HELP MATH ASAP!!!!!
44. ## Math

If six equilateral triangles are placed side by side so that only two sides of each triangle touch one of the other triangles what shape is formed? We are thinking circle?

45. ## elem algebra

the current in a stream moves at a speed of 10 mph. a boat travels 17 mi upstream and 17 mi downstream in a total time of 10 hr. What is the speed of the boat in still water?

46. ## math

Determine the equation of the lines perpendicular to the given lines and passing through the given points:(a)y-5x+3=0;(3,2) (b) y=8-7x;(-3,-4)

47. ## Social Studies

How did Gandhi feel about other religions?

48. ## Math

a 120 foot long rope is cut into 3 pieces. the first piece of rope is twice as long as long as the second piece of rope. the third piece of rope id 3 times as long as the second piece of rope. what is the length of the longest piece of rope

49. ## Social Studies

What were Gandhi's action for Swaraj and they led to? What was partition and what did he do about it?

50. ## geometry

Hi, could someone explain to me the steps I should take to solve the following problem. If radius BE is a perpendicular bisector of chord AC, then what is AB to the nearest tenth? BD is 7cm and DC is 9.

51. ## English Composition

What are some reasons that could persuade your parents to go to places alone with just your friends.

52. ## Math

pg.3 18.Which, if any of the following statements is always true? A. If the numerator and the denominator of a fraction are increased or decreased, by the same amount, the value of the fraction is unchanged. B. If the numerator and the denominator of a

53. ## Math

The value of 12 is obtained by multiplying p% by A.12 B.12/p C.p/12 D.1200/p E.100p/12 Is there any work for this?, if so please show work.

54. ## Math

X=66 2/3%Y Y=33 1/3%Z Z=(?)%X Please show work. A.16 2/3 B.22 2/9 C.45 D.300 E.450

55. ## electrical engineering

A 3-ph., 4-pole, 60Hz induction motor is supplied by a 660-V source. At a particular loading, the total power consumed is 65KW and the current drawn from supply is 70A (assume star connection). The rotor speed is 1760rpm. The stator iron losses are 1.2KW,

56. ## electrical engineering

A three phase, four- pole, 30-hp, 220-V, 60-Hz, Y-connected induction motor draws a current of 77 A from the line source at a power factor of 0.88. At this operating condition, the motor losses are known to be the following: Stator copper losses = 1033 W

57. ## health

What is major depressive disorder? A. A disorder that is enabling and helps a person function normally B. A disorder characterized by symptoms that interferes with a person’s ability to work, sleep, study, eat, and enjoy once-pleasurable activities C. A

58. ## health

Which symptoms are more common in depressed children and adolescents than in adults with depression? A. Fears of separation B. Reluctance to meet people C. General aches and pains D. All of the above

59. ## Math

How would a company who manufactures “widgets” benefit in using normal distribution?

60. ## Math

An experiment involving learning in animals requires placing white mice and rabbits into separate, controlled environments, environment I and environment II. The maximum amount of time available in environment I is 500 minutes, and the maximum amour of

61. ## Chemistry

a) 45.02% of the sample remains after 85 days. Consider how you can use the percent of Ir-192 remaining and the number of days to calculate the mass remaining after 85 days.

62. ## algebra

Perform the given set operation. Let U = {1,2,3,4,5,6,7,8,9,10}. Enter the answer as a comma-separated list. Enter EMPTY for the empty set. {3,7,9,} with a bold line over the top

63. ## criminal justice

explain the relationship between theory and hypothesis development and testing

64. ## geometry

The areas of corresponding faces of two similar triangular prisms are 49cm squared and 25cm squared. What is the ratio of the corresponding side lengths? Of the perimeters of the corresponding faces? Of the volume?

65. ## maths

Solve 2y - 5x = 3 and x + y = 5 using substitution.

66. ## English

The Great Gatsby Why did daisy and Tom spend a year in France Answer Are They wanted their little girl to learn French There was no reason Tom's family bought a house in Paris Thanks

67. ## maths

What is the value of p if the line (3p + 1)x - 2y = 6p is perpendicular to the line 2x - y + 1 = 0

68. ## Math

A flower was 1.6 meters high one week ago. In 7 days it grew 11 centimeters. Find the current height of the flower. (1 point) 12.3 m 1.71 m 125 cm or 11.2 cm

69. ## math

Find the number of term s in the following arithmetic sequence. 3, 9, 15, 21... 123

What type of graph does not show the number of times a response was given? box-and-whisker plot****** line plot stem-and-leaf plot bar graph

71. ## math

a car travelved a distance of 195 miles in 3 hours 15 minutes what is the unit rate

Let integral f(x)dx=9 from -6 to -1.5 integral f(x)dx=7 from -6 to -4.5 integral f(x)dx=4 from -3 to -1.5 A. Find integral f(x)dx from -4.5 to -3 B. Find integral (9f(x)-7)dx from from -4.5 to -3

If f(x)=Integral (t^3+6t^2+4)dt from 0 to x then f''(x)=?

74. ## Calculus Please Need Urgent :/

Find the most general antiderivative of f(x)=–8e^x–6secant^2(x) where -pi/2

75. ## Calculus Please Need Urgent3 :/

Find the derivative of the following function using the appropriate form of the Fundamental Theorem of Calculus. F(x)= (s^2)/(1+3s^4)ds from sqrtx to 1 F'(x)=? Thank you so much guys!

76. ## Geography 9R - HELP!

8) Heirs to Genghis Khan established ________________________, which was a time of peace, prosperity, order, and cultural exchange. a. Edit of Japan b. Pax Mongolica c. Pax Romana d. Pax Khan plzz help

77. ## Geography 9R - help!!!

6) This was issued in 1635, forbidding anyone to leave or enter Japan. a. Tang Shogunate b. Edit of Milan c. Edit of Nantes d. Edit of Japan my answer --- a am I correct?

78. ## English

1. I can do it. 2. I can't do it. ----------------- What is the difference in pronunciation between 'can' and 'can't' in each sentence?

79. ## English

1. If you think you can, you can. 2. If you think you can't, you can't. --------------------- What is the difference between 'can' and 'can't' in the sentence in pronunciation?

80. ## math

The garage you work for as an auto mechanic measures 230 ft. by 150 ft and handles 69 cars. Using the existing garage as a model, how much space would you plan to have in your garage?

81. ## calculus

Let f x   coth x . Use the Graph software posted in Moodle to do the following: (a) Graph f x  . (b) Graph the tangent and normal lines to the graph of f x  at x 1. (c) Graph f x  . (d) From the graphs obtained in parts (a)

82. ## algebra

how many liters of water should be added to a 20 liters of 40% acid solution to obtain a 30% acid solution?

83. ## Chemistry_DRBob222

Hello Dear I hope everything gorse very well. I did not get any respond from you. I render my solution to the problem over CO2 aq. + H2O ...> H2CO3 how much PH can be put at for the above-equation under P = 3600 psi, T= 190 oF, 0.208 liters fresh-H2O as we

84. ## physics

Two forces F1 and F2 ifF1is double that ofF2 and the resultant is perpendicular on F1 then the angle betwee them is Expain ans with reason and diagram

85. ## chemistry first year

20L of N2 and 100 L of H2 are reacted to produce NH3 what is the decrease in the V of the mixture N2+3H2--> 2NH3 Ans me with reason

86. ## maths

In triangle abc, angle abc= ×deg,bc=× and ab=(×+10) ;find the value of x

87. ## calculus

x^4 + 2x^2 + 1 = 0 (x^2)^2 +2x^2 +1 = 0 (x^2 + 1)^2 = 0 I don't know where to go now although I know the answer is x = i, -i

88. ## physics problem

The density of a sample of air is 1.157 kg/m3, and the bulk modulus is 1.42 · 105 N/m2. a) Find the speed of sound in the air sample. -----> I found it 350.3 m/s and its correct. b) Find the temperature of the air sample. Give answer in °C. ----> I cant

89. ## math

Anxious Billy Bob pulled out his math recording sheet and saw the following scores 54,62,65,68,70,70,78,82,84 A. He want to calculate his average.Which measure of center is the average?compute it ? I have this :The measure of center is the average, mean

90. ## Math

How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation.

91. ## Math probability

You roll two fair 6-sided dice. Let be the sum of the two independent rolls. (a) Give the PMF of in table form. (b) Give a mathematical expression for the PMF of .

92. ## Math

A random variable Y has the following CDF ; Fy(y)= 0 x

93. ## Math

The Oscar Drapery Company makes three types of draperies at two different locations. At location 1, it can make 10 pairs of deluxe draperies, 20 pairs of better draperies, and 13 pairs of standard drapes per day. At location 2, it can make 20 pairs of

94. ## math

if sound travels 6770 feet in 6.4 seconds. how far will it travel in one minute

95. ## arithmetic

a car traveled a distance of 195 miles in 3 hours 15 minutes what is the unit rate ? oris it answer 60 miles per hour

96. ## Physics

Concider the arrangement of four 1miroC point -charges located at allfour coners of a square with 4cm sides.Calculate the electric field due to the charges in the center of the square.

97. ## maths

30 children are going on a trip. It costs £5 including lunch. Some children take their own packed lunch. They pay only £3. The 30 children pay a total of £110 How many children are taking their own packed lunch?

98. ## math

-4x-4y=12 16y=-16x-48 identify the solution of the system or equatuions