# Questions Asked onSeptember 6, 2013

1. ## Physics

Which of the following describe possible scenarios? A) An object has zero instantaneous velocity and non-zero acceleration. B) An object has negative acceleration and is speeding up. C) An object has positive acceleration and constant velocity. D) An

2. ## physics

Two resistors connected in series have an equivalent resistance of 783.4 Ω. When they are connected in parallel, their equivalent resistance is 171.3 Ω. Find the resistance of each resistor. Ω (small resistance) Ω (large resistance

3. ## PHYSICS

An automobile battery has an emf of 12.6 V and an internal resistance of 0.0500 . The headlights together present equivalent resistance 5.60 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on

4. ## math

suppose that a, b, c ,and d are positive integers whose sum is 100 and a-c=5.What is the greatest possible value of ab-cd answers

5. ## geometry

how to solve angle numbers?

6. ## Statistics

The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

7. ## precalc

Suppose the value of quantity A changes from a starting value of x to a final value of y. Write an expression using x and y that computes the resulting change of quantity A.

8. ## macroeconomics

Assume Felix is willing to par $8 for a Star Trek pizza cutter. Tim also wants one but would only be willing to pay$6 for it. At a Star Trek convention,Felix manages to buy the last pizza cutter at the market price. In a strange twist of fate, however,

If there is a population of 800 deer what would be a good sample size and why.

10. ## science

vector A has a magnitude of 12 units and makes an angle of 30 with the positive x-axis.vector b has a magnitude of 8 units and makes an angle of 80 with the positive x-axis.using a graphical method , find the magnitude and direction of vectors A-B

11. ## geography

write short note watercycle

Are there tables comparing and contrasting the following or how would you write these up? 1. Ecological Studies and Cross-Sectional Studies 2. Case control studies and Cohort studies 3. Measurement bias (aka information bias) and selection bias 4.

13. ## physics

a thin square homogeneous plate, AB=BC=CD=DA=2 m density 78 kn/m2 and thickness 10mm is suspended. A and B is fixed. if support a breaks suddenly calculate (1)instaneneous accelration of D,(2) instataneous angular acceleration op plate and (3) instateneous

14. ## STATISTICS

True or False? A researcher is interested in studying whether there is a correlation of IQ with health. For this purpose he selected a sample of 261 people and asked them to complete two questionnaires: one for IQ and one for health. After evaluating the

15. ## STATISTICS

Researchers asked questions in 1001 randomly selected adults in Russia. We found a statistically significant, strong positive correlation between income and the number of recycling bins filled their houses per week (r = 0,77). Choose the best

16. ## calculus

int x^2/(x-2)(x^2+1)dx

17. ## calculus

int e^5xsin3xdx =

18. ## calculus

int cos6xcos4xdx =

19. ## history

in what ways did Neolithic people dramatically improve their lives

20. ## algebra

you buy a storage rack that holds 40 cds. you have 27 cds. write an inequality that describes how many more cds you can hold. you buy 15 cds. will they all still fit?

21. ## history

why do you think the development of agriculture ocurred around the same time in different parts

22. ## calculus

int dx/3sinx+4cosx dx =

23. ## calculus

int e^5xsin3xdx =

24. ## calculus

intergal xcosax^2dx =

25. ## calculus

int 0^1e^2edx =

26. ## Geometry..... reposted ques by me

in the diagram AB=20 cm, BC=21 cm, AD=10 cm and DE= 10.5 cm. Angles ABC and ADE are right angles. if triangle ADE is removed from triangle ABC.What is the area of shaded region that remains?

27. ## chemistry

What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?

28. ## history

In What ways did Neolitic People Dramatically improve their lives? Please check my answer.. the change over from hunting and gathering to farming and herding took place not once but many times. Neolithic people in many parts of the world independently

29. ## Physics

how long will it take a bobsled with a velocity of 6 meters a second o stop if it decelerates at a rate of 3 meters per second?

30. ## math

the courier service company has found that their time of parcels to client is normally distributed with a mean of 45 minutes and a standard deviation of 8 minutes. the probability that a randomly selected parcel will take less than 48 minutes to deliver is

31. ## physics pls help!

1.) water is flowing through a horizontal pipe of varying crosection, the diameter is 12.0 cm at a pressure of 8.0x10^4 Pa. at section 2, the pipe has a diameter of 6.0 cm and the pressure is 6.0x10^4 Pa. find the speed of water through section 1 and 2

32. ## algebra 1

A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of $1,050. At the end of March 2009, her checking account held a balance of$800. What is the monthly rate of change for the

33. ## precalc

A group of students drove from Lawrence, KS to Denver, CO. They passed a restaurant 111 miles from Lawrence at 10 pm and stopped at a gas station 370 miles from Lawrence at 1:45 am. Using cruise control, they maintained a constant speed driving from the

34. ## Physics

In the flying ski jump, a skier acquires a speed of about 62 mph (this ended up being 27.7 m/s) by racing down a steep hill and then lifts off into the air off of a horizontal ramp. Beyond the ramp, the ground slopes at an angle of 45 degrees. a) Predict

35. ## precalc

This question is from the previous question. What was the change in distance in miles?

36. ## math

Why is an idea like the pacific?

37. ## social

what do the migration routes of homo sapiens reveal about their survival skills and ability to adapt

38. ## precalc

Same question from previous problem. b. As the car traveled from 309 miles from Lawrence to 352 miles from Lawrence, what was the change in time in hours? c. Define a formula that determines the distance from Lawrence in miles, d , in terms of the number

39. ## chemistry

An experiment requires 13.0$${\rm g}$$ of cyclohexane, whose density at 25 $$^\circ {\rm C}$$ is 0.7781 $${\rm g/mL}$$. What volume of cyclohexane should be used?

40. ## Math

Arturo Muina is the captain of a charter fishing boat. He is paid a salary of $140 per day. He also averages tips amounting to 12% of a$475 daily charter rate. Last month during a fishing tournament, Arturo worked 22 days. What were his total gross

41. ## Geometry

Paragraph proof: in the figure AC and BD LIE IN PLANE j and BY AND CX lie on k C and D are collinear. 2.) points a c and x are coplanar. 3.) X and Y are collinear

42. ## COMM100

Which of the following would be an appropriate way to use the DECIDE tool in response to research suggesting that there are differences between the way men and women communicate?

43. ## econ

Assume Felix is willing to par $8 for a Star Trek pizza cutter. Tim also wants one but would only be willing to pay$6 for it. At a Star Trek convention,Felix manages to buy the last pizza cutter at the market price. In a strange twist of fate, however,

44. ## education

What can you major if you have associate degree in science. What is difference between associate in science and Associate of Applied Science?

45. ## Geometry

How do you segment postulates to determine congruent segments

46. ## HELP! Geometry

Part I 1. Why is the word coplanar included in the definition for parallel lines? 2. Explain why you think the angle pairs formed by two lines and a transversal are related. Why might it be helpful to identify them as angles that go together instead of

47. ## American Gov

What is the primary claim made by those who oppose hate crimes legislation?

48. ## Algebra

Rod and reel inc. manufactures and sells fishing rods. The company uses the equation P= 25r - 12,500 to estimate its profit P on the sale on the fishing rods. How many fishing rods were sold if the company made a profit of 125,000? Please help. Thank you

49. ## Algebra 1

William, a logistician, needs to route a freight train that is 20 feet at its tallest point and 10 feet at its widest point within 3 days. The most direct path includes a single-track tunnel that needs 24 hour notice prior to use. If the tunnel is roughly

50. ## Physics

A particle starts at the origin at t=0 with an intial velocity of 5.0m/s along the positive x axis. If the acceleration is (-3.0,4.5) m/s^2, determine the velocity and position of the particle at the moment it reaches its maximum x coordinate. You can't

51. ## algebra

1. Are the rotations of figures always congruent? Why are or why not? 2. A car tire rotates when you drive. How is this type of rotation different from a rotation in Geometry? What other type of transformation is happening to the car tire? Explain.

52. ## Math

Simplify (tan 4X+tan 2x)/(1-(tan 4X)(tan2X))

53. ## Physics

The drawing shows a positive point charge +q1, a second point charge q2 that may be positive or negative, and a spot labeled P, all on the same straight line. The distance d between the two charges is the same as the distance between q1 and the spot P.

54. ## Physics

A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N · m2/C. What is the angle between the direction of the electric field and the normal to

55. ## Ancient World History

Why did the development of agriculture ocurred around the same time in several different places

56. ## Geography

What is significant about the location of California and Ontario of Canada?

57. ## health

You can find ways to manage stress by ________. A. Getting active and eating healthy B. Pushing yourself to work harder C. Dismissing any signs of stress D. Keeping what’s causing your stress to yourself is it A??????????

58. ## main ideas

Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants stays warm because sunlight and heat coming through the glass roof are mostly trapped. The heat doesn't radiate back into the

59. ## chemistry

Convert 34.5 in2 to cm2. Report the answer to the correct number of significant figures. (1 inch = 2.54 cm is an exact or defined conversion.)

60. ## english

. Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days

61. ## physics

A ball thrown straight up from the ground passes a window 5.6 m up. An observer looking out the window sees the ball pass the window again, going down, 3.4s later. Find the velocity with which the ball was initially thrown.

62. ## World History

What do the dates reveal about the chronology of early human migration?

63. ## Physics

A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N · m2/C. What is the angle between the direction of the electric field and the normal to

64. ## Algebra

Quick q if I have 2x^2+x=6 and I want to isolate x^2 would it be x^2+x/2=3 or x^2+1/2x=3?

65. ## Physics

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.21 m and a positive point charge q2 at y2 = +0.30 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by

66. ## social problems

1. A researcher who wishes to become familiar with a new area of interest should use an explanatory approach.

biogy

68. ## English

1. Identify the sentences in which antecedents are used correctly. Choose several. a) We can’t go to the game on Friday because you must be a sophomore. b) I missed the bus because I woke up late. (This is my choice) c) The store hours can be obtained by

69. ## Geography

What factors might account for the per capita incomes of Colorado, Delaware, Maryland, Massachusetts, New Jersey, and New York of the United States and Yukon Territory, Ontario, and Northwest Territories of Canada? My answer: The factors which may account

70. ## MATH I NEED HELP PLEASE

1. Which of the following conclusions is true about the statement below? A. The statement is never true. B. the statement is true when x =0. C. The statement is true when x is negative. D. The statement is always true. My answer was B. 2. Solve for x in

I have to follow the pattern .125, .25, .375, .5 ?

72. ## physics

During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s to 9000 m/s with an average acceleration of 33 m/s*. How long did the acceleration last??

73. ## budgeting and forecasting

Paint Sales Time Series Week Sales (000’s of gallons) 1 6 2 8 3 10 4 9 5 11 6 12 7 10 8 8 9 7 10 9

74. ## World History

How did Neanderthals and Cro-Magnons differ from earlier people?

75. ## English

1. What type of context clue is provided for the italicized word in the following sentence? "The ice, snow, freezing wind, deep ice cracks, called crevasses (this is italicized), and lack of oxygen are constant threats to climbers’ safety and health." a)

76. ## Physics

A police radar has an effective range of 1.0 km, and a motorist's radar detector has a range of 1.9 km. The motorist is going 100km/h in a 80km/h zone when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticket?

77. ## Algebra

Factor x^4+64

78. ## literature

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as

80. ## physics

In a game against the White Sox, baseball pitcher Nolan Ryan threw a pitch measured at 34.4 m/s. If it was 18.4 m from Nolan's position on the pitcher's mound to home plate, how long did it take the ball to get to the batter waiting at home plate? Treat

81. ## Literature

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as

82. ## biology

Methyl mercury is a toxic substance that can harm the nervous system. Some fish are contaminated with high levels of methyl mercury. In many places, these fish are an important food source. Experiments are being conducted to determine how many meals of

83. ## History (Western Civilization)

Explain the importance of the Hebrews to the development of western civilization including the ideas of monotheism, the covenant, the Torah and Christianity. - Can someone briefy explain to me? I am searching through goggle but can not find the right

84. ## Algebra 1 (Steve)

In a diving siblings showcase, 11yr old Hannah takes off from a 24.61 foot platform with an initial velocity of 9.7 ft/sec at the same time that her brother Tyler, who is older takes off from a 32.81 foot platform with an initial velocity of 4.51ft/sec.

85. ## gg

you need 50 pounds of two commodities costing $1.25 and$1.26 per pound,verify that the total cost is y=1.25x+1.60(50-x),where x is the number of pounds of the less expensive commodity.

86. ## Math

3^4 /3^3 + 4^2 *4^0/2^4 Please help and explains how you got the answer. I have been stuck on this for awhile and am not sure how to do this. Thank you!

87. ## english

In " At the Tourist Center in Boston," the speakers tone can best be identified as?

88. ## physics

A stone is dropped from the roof of a building; 1.60s after that, a second stone is thrown straight down with an initial speed of 26.0m/s , and the two stones land at the same time. part a. How long did it take the first stone to reach the ground? part

89. ## Algebra

Please help with this factoring problem: 2x^3/2 − 6x^1/2 + 4x^−1/2 what i did first was make all the exponents whole numbers, so I got: 4x^3-36x+16x^-1 I don't know what to do from there.

90. ## english

In " At the Tourist Center in Boston," the speakers tone can best be identified as?

117. ## algebra 2

a bag of fertilizer claims that it will cover 5000 square feet of grass if you front yard is 1450- feet wide and 65 feet deep and you back yard is 150 feet wide and 225 feet deep how many bags of fertilizer will you nee to fertilize your entire back yard?

118. ## algebra 2

a bag of fertilizer claims that it will cover 5000 square feet of grass if you front yard is 150 feet wide and 65 feet deep and you back yard is 150 feet wide and 225 feet deep how many bags of fertilizer will you need to fertilize your entire back yard?

119. ## math

A professor wants to supplement her pension with investment interest. If she invests $26,000 at 7% interest, how much more would she have to invest at 9% to achieve a goal of$4,160 per year in supplemental income?

120. ## physics

In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner? (the rectangle

121. ## Math

A rectangular rice land is to be fenced along 4 sides and in the middle to divide it into to 2 equal areas. If 200m of fencing is available, what is the maximum area to be fenced?

122. ## Physics

A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N · m2/C. What is the angle between the direction of the electric field and the normal to

123. ## Math

The length of a piece of cardboard is two inches more than its width. an open box is formed by cutting out 4 inch squares from each corner and folding the sides. If the volume of the box is 672 cubic inches, find the dimensions.

124. ## Physics

Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the two naturally occurring electrons is removed. The radius of the orbit is 2.65 10-11 m. Determine the magnitude of

125. ## math probability

you roll 2 dice. what is the probability that at least one of them is a 6.