# Questions Asked onSeptember 4, 2013

1. ## Biology

Which of the following is a correct statement? A. Decomposition is an important part of only two of the three nutrient cycles. B. The nutrient cycles contain paths of elements through the living world but not through the nonliving world. C. Living

2. ## Geography

How do the three basic geographic characteristics affect a nation? My answer: The three basic geographic characteristics affect a nation in various manners. Size affects a nation because a larger nation, such as United States, China, or Russia, has the

3. ## university

An autos velocity increases uniformly from 6m/s to20m/s while covering 70m.find the acceleration and the time taken.

4. ## Geography

Why do local and regional political systems exist? My answer: Local and regional political systems exist because smaller political units enables governing to be more efficient.

5. ## AP Physics

You can obtain a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on a smooth water surface. The resulting oil slick will be approximately one molecule thick. Given an oil droplet of mass 10.00

6. ## Physical Science

The Magnetic field lines of a bar magnet begin near the magnet's _____________. I believe this question is asking where the lines begin (ie leave) the bar magnet...which would be the north pole.

7. ## physics

A small sphere of charge q1 = 0.840 µC hangs from the end of a spring as in Figure a. When another small sphere of charge q2 = -0.546 µC is held beneath the first sphere as in Figure b, the spring stretches by d = 3.18 cm from its original length and

8. ## Algebra 2

The arch of the Gateshead Millennium Bridge forms a parabola with equation y=-0.016(x-52.5)^2+45 where x is the horizontal distance(in meters) from the arch's left end and y is the distance (in meters)from the base of the arch. What is the width of the

Write a mixed number for each time period. Be sure each fraction is in lowest terms. 8:00am to 9:20 am Not sure how to set up

10. ## physics

WA -10.0 nC point charge and a +20.0 nC point charge are 15.0cm apart on the x-axis.hat is the electric potential at the point on the x-axis where the electric field is zero?

11. ## Physics

Consider the equation v = 1/8zxt2. The dimensions of the variables v, x, and t are [L]/[T], [L], and [T], respectively. The numerical factor 8 is dimensionless. What must be the dimensions of the variable z, such that both sides of the equation have the

12. ## order of operations

Find the value of the expression below for r=4 and t=2 t^3-r+20 divided by r 9 72 6* I chose this one 40

13. ## physics

A helicopter is ascending vertically with a speed of 5.03m/s . At a height of 132m above the Earth, a package is dropped from the helicopter. How much time does it take for the package to reach the ground?

14. ## URGENT 8th Grade Math

Write a word phrase for the algebraic expression 3x-7. The difference of three times and number x and seven. The difference of seven and three times a number x. Three times a number x fewer than seven.** The quotient of three times a number x and seven.

15. ## Geography

What is the difference between natural and artificial boundaries? My answer: A natural boundary is based on physical features of land, such as rivers, lakes, or chains of mountains, whereas an artificial boundary is a fixed line generally following

16. ## Physics

Identical point charges of +2.9 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force

17. ## physics

A car starts from rest and travels for 5.3 s with a uniform acceleration of +1.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.3 m/s2. The breaks are applied for 1.60 s. How fast is the car going at the end of the braking

Can you check the following problems? Tell if the problem can be solved by using GCF or LCM and then solve. 1. Joanne is campaigning for class president and plans to distribute 20 flyers and 16 buttons. She wants each classroom to receive an identical set

19. ## Physics

A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s?

20. ## History (Western Society)

How does hammurabi's code reveal about babylonian society?

21. ## Calc

Recall that the average velocity between times t1and t2 is calculated using vave = y(t2) − y(t1)/t2 − t1. We are given that y = 14t − 1.86t^2. Evaluating at t = 1, we have y(1) = 14(1) − 1.86(1)2 = 12.14. Thus, the average velocity between times 1

22. ## Physics; help please :)

A transverse wave is observed to be moving along a lengthy rope. Adjacent crests are positioned 2.4m apart. Exactly six crests are observed to move past a given point along the medium in 9.1 seconds. Determine the wavelength, frequency and speed of these

23. ## Algebra - Equations

If 3xy = 9xz = 12yz = 1, what is the value of x, y, and z? This is just a set of 3 equations: 3xy=1 9xz=1 12yz=1 ⇒(18xyz)^2=1 ⇒ xyz = ± 1/18 ⇒ (x,y,z) = ±(2/3,1/2,1/6) PLEASE TELL ME HOW DID THE SOLUTION CAME UP WITH xyz = ± 1/18 and (x,y,z) =

The following table gives the number of deaths due to accidental falls for each month during 1970. Is there any evidence for a departure from uniformity in the rate over time? That is, is there a seasonal pattern to this death rate? If so, describe its

25. ## physics

A car starts from rest and travels for 5.3 s with a uniform acceleration of +1.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.3 m/s2. The breaks are applied for 1.60 s. How fast is the car going at the end of the braking

26. ## Physical Science

The primary colors of pigments A. are cyan, yellow, and magenta. B. are the same as the secondary colors of light. C. combine in equal amounts to produce black. D. all of the above I think it's D.

27. ## Marketing

Which of the following best describes a target market? a. a business-to-business market b. a group of people most likely to become customers c. a group of people most likely to have the same interests d. a company's market share I couldn't find much info

28. ## physics

A person throws a rock straight up into the air. At the moment it leaves the person's hand it is going 81 mph. When the rock reaches its peak, how fast is it going and what is the magnitude and direction of its acceleration? Ignore air drag. Express your

29. ## physics

A sports car moving at constant velocity travels 130m in 4.7s, what is the magnitude of acceleration if car brakes at 4.4m?

30. ## math

Three individuals form a partnership and agree to divide the profits equally. X invests \$4,500, Y invests \$3,500 and Z invests \$2,000. If the profits are \$1,500, how much less does X receive than if the profits were divided in proportion to the amount

31. ## physics

A steel rod is 3cm in diameter at 25C. A brass ring has an interior diameter hole of 2.994cm at 25C. At what common temp will the ring just slide onto the rod? alpha(steel)- 11x10^-6 alpha(brass)= 19x10^-6

32. ## science

What is science is the question and btw Im in grade 8 so could u plz give an answer according to that like explain what is science first and then wht r its branches plzzz!!!

33. ## bio 11

must the steps in the scientific method always be followed in the same order? Explain.

34. ## Algebra

The density of aluminum is 2.70 g/cm3, and the average mass for one aluminum atom is 4.48×10-23 g. Five identical aluminum coins are found to displace a total of 2.50 mL of water when immersed in a graduated cylinder containing water. How many atoms are

35. ## math word problems.

The candy factory sells three times as many mints as it sells almonds bars. It sells half as many almond bars as it sells caramels. If It sells 3,750 cases of mints each month, how many caramels does it sell in one month?

36. ## early childhood currirulum

Penn foster Test exam questions exam number 405550

37. ## Urgent math question for Reiny

Find the value of the expression below for r=4 and t=2.... t^3-r+20 divided by r 9*** 72 6 40 Ok, Reiny you said my answer9 was originally wrong, however when I looked at the work you did and you put in parenthesis()....my question is why, because the

38. ## jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm?

39. ## English

We plant two bean seeds in different pots. What's the subject?

40. ## ANais Nin: Quote Intrepretation

In your own words, explain the following quote by Anaïs Nin: We do not see things as they are, we see them as we are. How is this? Does it sound okay? It is how I interpreted. Thanks. It means that we do not see things how they are, but we see them how we

41. ## Algebra

A sheet of aluminum (Al) foil has a total area of 2.119 ft2 and a mass of 2.714 g. What is the thickness of the foil in millimeters? (Density of Al = 2.699 g/cm3?

42. ## Math

in the numeral 3,000,000, there are how many thousands

43. ## Algebra

The density of iron is 7.87 g/cm3, and the average mass for one iron atom is 9.28×10-23 g. How many atoms are there in a rectangular iron ingot measuring 3.00 cm × 3.00 cm × 9.00 cm?

44. ## art

What's the 9 principles of design I know balance,unity,variety,movement, and emphasis...but the rest..idk

45. ## Geography

What physical features make up the natural boundaries between the United States and Canada?

46. ## maths

This qusetion was about a journey between two towns. During the start of the journey the odometer reads 39593 ( the reverse of the no is also the same) and at the end of the journey again the odometer reads a number similar to prior one....If the max speed

47. ## math

6.5 meters divided by 0.625....what's the answer and how did you solve it

48. ## History (Western Society)

What was the difference between human life before and after the Neolithic revolution including the development of civilizations and empires in the river valleys of Mesopotamia.

49. ## physics

An ideal gas, for which gamma=1.5, undergoes an adiabatic expansion in which its volume is doubled. if the initial temp if the gas is 27 C, what is the final temperature of the gas?

50. ## Physics; help please :)

Two wires made of the same material of density 7240 kg/m3 and having the radius in the ratio 1:2 but the same length 1.54 connected together and stretched by a force of 540 N. If the speed of a transverse wave through the thinner wire is 3600 m/s,

51. ## VERY URGENT Language arts

“First of all I dismembered the corpse. I cut off the head and the arms and the legs? What kind of context clues helps you determine the meaning of dismembered? Characteristics Contrasting words Examples Explanatory words and phrases*** Am I correct?

52. ## HELP! Geometry

Determine the slope of a line perpendicular to the line shown. (3,5) and (7,-8) A. -4/13 B. 13/4 C. -13/4 D. 4/13

53. ## Algebra 2

What is the slope of the line that passes through the points (-2, 4.15) and (1, 1.24)? Here's my work: m= y2-y1 / x2-x1 m+ 1.24-4.15 / 1 - (-2) m= -2.91/3 Is my answer correct? I really appreciate your help! Algebra isn't the easiest for me

54. ## Math

The fifth and sixth grades at Oak Street School are having fair.There are 50 students total and 3/5 of the students are fifth grade students.How many fifth grade students are entered in science fair?

55. ## Health

I need to interview an adult about how health care changed in their lifetime. I don't have anyone to interview so can someone that is an adult can you please tell me how health care have changed. Medical Advances Changes in Cost Changes in the relationship

56. ## algebra

In 2010 a company reported a net income loss of 23.8 million. In 2011 the company reported a net income gain of 10.4 million. How much more income did the company earn in 2011 than in 2010

57. ## To Wyatt re English 101

I don't like leaving that entire test available online, so I'll post my response to you here: 1 - 31 are correct. Incorrect = 32 33 and 34 are correct, but they sure are clumsy, aren't they? 35 is odd -- your second sentence implies that baseball (what?

58. ## Physics

Vector C has a magnitude 25.8 m and is in the direction of the negative y axis. Vectors A and B are at angles á = 41.9° and â = 26.7° up from the x axis respectively. If the vector sum A B C = 0, what are the magnitudes of A and B?

How does KH2PO4 induce controlled flocculation?

Given the points A (1, 2), B (-4, 4), C (-3, -3) and D (2, -5), determine ifLINE:AB and LINE:CD are parallel, perpendicular or neither. A. parallel B. both perpendicular and parallel C. perpendicular D. neither MyANSWER: A

61. ## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?

62. ## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?

63. ## Maths

Eq of curve is y=b sin^2(pi.x/a). Find mean value for part of curve where x lies between b and a. I have gone thus far- y=b[1-cos(2pi x/a)/2]/2 Integral y from a to b=b/2(b-a)-ab/4pi[sin(2pi b/a)-sin2pi) MV=b/2-[ab sin(2pi b/a)]/(b-a) Ans given is b/a. I

64. ## Organic Chemistry

My original question was that I wished to dissolve 100mg of caffeine powder in oil but could not do it as caffeine was not soluble in oil. The answer was to dissolve soap in the oil first, then the caffeine. I've done some research and I propose to

65. ## Geography

What will the rate of natural increase be like if the birth rate is high and the mortality rate is low?

66. ## probability

A random sample of six integers in the interval [1,42] is to be drawn. The numbers are selected randomly, one after the other, and repeats are allowed. What is the probability the six numbers in the sample will all be different?

67. ## Vocabulary

which 2 words are most nearly opposite in meaning? Acute, bumbling, optional, taut Answer: Bumbling and Taut The antonym for Bumbling is efficient. Taut is Marked by the efficient, sparing, or concise use of something, Is that correct?

68. ## Physics

This question has to do with kinematics graphing. I CAN NOT REPRODUCE THE GRAPH BUT hope that some help can be given to me with this question. The position versus time for a certain object moving along the x-axis. The object's initial position is -2 m.

69. ## Math

Find the derivative of y=sin(x)*(sinx+cosx)

70. ## Science

How does using a scale model make these relationships easier to understand?

71. ## Science

True or false? decomposition is an important part of only two of the three nutrient cycles I think it's true. Thanks

72. ## French

I'm doing a French crossword puzzle, and I'm stuck on one of the words. It's a four letter word like: _a_d And it fits in the sentence: Le train part de la____ de Lyon. Could someone help me out? Thanks!

73. ## Math

This is Translating Problems into Equations: (a) Ms. Dixon had a 25ft ribbon that was cut into two peices. (b) One piece is 6ft longer than the other. Ms. Dixon --> Ribbon/Pieces --> Equation -->

74. ## biology

You need a 5 microgram glucose/ml aqueous solution, but the lab balance is accurate to only 0.01g (ie., it displays 2 digits to the right of the decimal point) Describe 2 methods by which you could accurately prepare this solution using the lab balance. I

75. ## early childhood ed

Test exam questions..exam 405550

76. ## Algebra

Calculate the average density of planet Pluto, given its mean distance from the sun is 5.91×109 km, its radius is 1137 km, its volume is 6.157×109 km3, its orbital period is 248.1 years and its mass is 1.25×1022 kg. Report the density in g/cm3, without

77. ## Physics

An AC voltage with 169 peak volts is applied across a 506 ohm resistor. To the nearest tenth of a watt, what is the average power?

78. ## math

1. write the equation in slope-intercept form. what are the slope and y-intercept? -9x+10y=-9 2. what is the graph of the equation? -5x+y=-3 please help on these a.s.a.p thansk guys

79. ## physics

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is L = 81.0 m. In part (a) the person is looking at the base of the antenna, and his line of sight

80. ## Chem

calculate the temperature change that occurs when 229 cal of heat are added to 22g of water

Here is the question: If gene frequencies are in equilibrium, the genotypes, AA, Aa, and aa occur in a population with frequencies (1-0)^2, 20 (1-0), and 0^2. Plato et al.published the following data on haptoglobin type in a sample of 190 people: Hp1-1 =

82. ## finance

if tiny tots has a outstanding debt currently selling for 800 per bond. it matures in 20 years pays interest annually and has 14% coupon rate par is 1,000, what is the after tax cost of the debt?

83. ## physics

a man leaves the garrage in his house and drives to a neigbouring town which is twenty kilometres away from his house on sight-seeing. he returns home to his garrag two hours after. what is his average velocity from in home in km/h?

84. ## Geometry

The length of one side of an isosceles triangle is two times the base b. This length is equal to (8b - 12),in. What is the value of b?

85. ## Math

A student used points (150,80) and (50,30) but wrote the equation y=5x + 0.5. What mistake did the student make?

86. ## Vocabulary

The story of the men who first climbed to the top of Mount Everest is a(n) (????????) of human courage and strength. My choices are: refute, delude, puncture, encompass, devastate, variable, retaliate, arid, maze, subordinate, culprit, beacon, facet, epic,

87. ## math

how is multiplying integers is like multiplying whole number?

89. ## programming

trying to debug pseudocode 2. Th e Springwater Township School District has two high schools—Jeff erson and Audubon. Each school maintains a student fi le with fi elds containing student ID, last name, fi rst name, and address. Each fi le is in student

90. ## Quantum Computing

Suppose H|ψ> = 1/√2 (|000> + |111>). What is |ψ> ? Specify the probability amplitude for each component: |000> = |001> = |010> = |011> = |100> = |101> = |110> = |111> =

91. ## walden

4.During the energy crisis of the 1970s, and again in the last 5 years, Congress bemoaned the “price gouging” and “windfall” profits of the major oil companies. In the 1970s Congress imposed an “excess profits tax” on these companies. It did

92. ## english........bridges

is 'Go Between Bridge' an important landmark for the country? Explain why or why not.

93. ## Urgent 8th Grade Language Arts

Choose I for each antecedent that is unclear or missing and C for each antecedent that is used correctly. Thanks so much for you help. 1. We can't go to the aquarium Monday because you need reservations. C 2. Many people have Monday off, so the aquarium

94. ## AP Calc

Find the equation of the tangent line at the indicated point. y=5th root of (3x^3+4x) at (2,2)

95. ## probability

In a random sample of three integers between 1 and 365 inclusive, what is the probability, to three decimal place accuracy, that (a) the three numbers will all be di fferent; (b) the three numbers will not all be di fferent?

96. ## Algebra

I'm having trouble with this literal equation. r^2/r^2+a^2=w/x solve for w. Thanks so much for the help

97. ## Math

A student used points (150,80) and (50,30) but wrote the equation y=5x + 0.5. What mistake did the student make?

98. ## chemistry

determine the mass of a 1.75 cm piece of Mg if 30 am =.42 g?

99. ## Chemistry

-A sample consist 90% NaOH and 10% CaO,whats the concentration of NaOH in the solution of this 3g sample,dissolved in 250cm3. -How many cm3 of H2SO4 with concentration of 0.255M are needed for titration of 100cm3 of this solution

100. ## Physics

I have a graph where the horizontal numbers are 0-9 which represents time (s) and the vertical numbers are 0 to -4, -2, 0, 2, 4, 6, 8 which represents position(m). The question is: the position versus time for a certain object moving along the x-axis The

101. ## Math

Area is 9 ft. And height is 2 ft. Of a triangle. What is the base?

102. ## Geometry

Find the slope of a line parallel to the line passing through points at (1, -2) and (3, 2). A. 1/2 B. undefined C. 0 D. 2

103. ## Geometry

Given the points A (-3, -2), B (1, 4), C (3, -4) and D (0, -2), determine [line ab] if and [line cd] are parallel, perpendicular or neither. A. parallel B. perpendicular C. both parallel and perpendicular D. neither

104. ## math

longest multipcation combination for 120 180 and 210

105. ## Geometry

A rectangle has area and length. Find the width. Area=27t^2-18t Length= 9t How do I find the width?

106. ## math analysis

Disprove: For every integer a, if 8 divides a, then 6 divides a. im still stuck. i wrote: Disproof. Suppose 8|a. by definition of divisibility, we know 8|a means there is an integer b with a=8b. There is not value of y.

107. ## math analysis

i don't know what it mean "~" Exercise: Describe the practical meaning of ~(p v q) using sentences.

108. ## LMI

I am looking for the patern of 0,2, 5,9, or sequence of them

109. ## Math

Our teacher handed out handfuls of m&ms to each student in class. We were divided into 4 groups of 5 each. We had to count the colors of each of our handfuls of m&ms. Would this be considered a random sample? why or why not? I know the definition of random

How to change marquee background color one by one automatically.

111. ## English

Is 'together' a noun?

112. ## andover leke

janna wrote this number 413,900 what is the valu of the digit in the ten thousands plase? 400,000 40,000 10,000 3,000

113. ## Quantum Computing

Suppose we have |ϕ⟩=∑y∈{0,1}nβy|y⟩ such that βy=0 if s⋅y=1mod2 and βy=12(n−1)/2 if s⋅y=0mod2, where s is some hidden n-bit string. Assume that s is not the all-zero string 00⋯0. (a) If we run Fourier sampling on |ϕ⟩, what is the

114. ## Math

Harold has been given this list of equivalent fractions:6/14,12/28,3/7.He is supposed to choose the fraction that is in simplest form.Which one should Harold choose?

115. ## Math

Area is 9 ft. And height is 2 ft. Of a triangle. What is the base?

116. ## Algebra

Factor the expression 1/3x - 5/6 = 1/6(?)

117. ## chemistry

determine the molecular mass of magnesium oxide?

118. ## AP Calc

How do you find the derivative of y=sin(x)*(sinx+cosx)

119. ## Physics Mechanics

An object experiences an impulse o 43.78 N-s for a time period of 12.52 s. what is the force of the object?

120. ## Geography

What waterway leads from the Great Lakes to the Atlantic Ocean?

121. ## physics

an ball of mass initially at rest fragments into two masses each of 1 kg moving with speed 0.6c. find the mass of original body

122. ## chemistry

for a reversible reaction if the concentration of reactant are doubled aad a definate tempreture then equilibrium constant will

123. ## andover leke

janna wrote this number 413,900 what is the valu of the digit in the ten thousands plase?

124. ## physics

if a ball is tossed from ground level upward at a speed of 44 m/s how long will it take to reach its maximum height

125. ## Math

Is this a trick question? I need to write the number 79 in short word form, would it be seventy 10's and one 9 or 10 sevens and 9 ones? Please, please, please help me Thank You

126. ## Physics Mechanics

An object experiences an impulse o 43.78 N-s for a time period of 12.52 s. what is the force of the object?

127. ## History (Western Society)

Explain the importance of the Hebrews to the development of western civilization including the ideas of monotheism, the covenant, the Torah and Christianity

128. ## History

How did greek culture differ from those of the river valley civilizations? A. Eliminated social classes B. Became an atheist C. Emphasis on secularism

129. ## history

why is the columbian exchange and pilgrims important to the U.S history? thank you!

130. ## Math

Mary Lou said that 16/20 is simple form is 8/10. What was her mistake? What is the correct answer?

131. ## Math

The fifth and sixth grades at Oak Street School are having fair.There are 50 students total and 3/5 of the students are fifth grade students.How many fifth grade students are entered in science fair?

132. ## Math

|6-8| - |9| = -7?

133. ## Geometry

(5d + 5) - (d +1)

134. ## Math

A student used points (150,80) and (50,30) but wrote the equation y=5x + 0.5. What mistake did the student make?

135. ## Math

Ms. Sue can u explain how you got the answer 240 in my post! The one wth PEMDAS!

136. ## math

find the area under normal distrubution curve at the right of z = -103

137. ## Math

There are how many hundredsn the number 344,298

138. ## Math

simplify fraction. 42/48

139. ## bio 11

what is the only difference between a control set up & an experimental set up?