# Questions Asked onOctober 6, 2009

1. ## Calculus

The population of a region is growing exponentially. There were 40 million people in 1980 (when t=0) and 50 million people in 1990. Find an exponential model for the population (in millions of people) at any time t, in years after 1980. P(t)= Predicted

2. ## English

I don't quite understand the meaning of the story "Score/Score" by Phyllis Gotlieb. I can't seem to find much about it on the internet.

3. ## English

What is the irony in "Happy Event" by Nadine Gordimer?

4. ## physics

Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 26.0. If Santa slides 7.00 before reaching the edge, what is his speed as he leaves the roof?

5. ## physics

Figure 8 shows position-time graphs of the straight-line movement of two brown bears in a wildlife preserve. Which bear has the greater average velocity over the entire period? Which bear has the greater velocity at t = 8.0 min? Is the velocity of bear A

6. ## Physics

A 300 ball swings in a vertical circle at the end of a 1.2-m-long string. When the ball is at the bottom of the circle, the tension in the string is 13 . What is the speed of the ball at that point?

7. ## Chemistry

Suppose you wanted to dissolve an aluminum block with a mass of 15.4 g What mass of H2 gas (in g) would be produced by the complete reaction of the aluminum block?.

8. ## Calculus

[Exponential growth & decay] The half-life of radioactive strontium-90 is approximately 29 years. In 1965, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years

9. ## Science

On the surface of the Earth, it is approximately 6,200 miles to the North or South pole. How many miles is it between two parallels 5 degrees apart?

10. ## science

HOW CAN I TELL IF A CELL HAS DEPTH BY USING A MICROSCOPE??

How Does a rodeo star get around

12. ## org. chem.

A student who was isolating aspirin stopped the experiment after the filtration step with alumina. One week later, the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 degress Celsius.

13. ## Physics

A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 7.0×10−3 less than that at sea level. What is the observatory's altitude?

14. ## physics

soo for physics, we did a lab where we launched a cart on a track on the floor and recorded time, distance, etc. to figure out things. one of the questions on the lab is: can you think of a simple follow-up experiment that would allow you to determine how

15. ## chemistry

A student placed 10.5 g of glucose C6H12O6 in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.mL mark on the neck of the flask was reached. The flask was then shaken until the

16. ## Physics

A 0.20-kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.

17. ## MATH

Ian multiplied a number by 5. He then multiplied that product by 2. What digit is in the ones place of the final product?

18. ## chemistry

what is the percentage of sulfur and copper(I) sulfide, Cu2S is the answer 35.58% if not could you show me the formula

19. ## probability

A box contains 4 red and 3 blue poker chips. What is the probability when 3 are selected randomly that all 3 wil be red if we select chips with replacement? a.) Without replacement?

20. ## physics

A chandelier with mass m is attached to the ceiling of a large concert hall by two cables. Because the ceiling is covered with intricate architectural decorations the workers who hung the chandelier couldn't attach the cables to the ceiling directly above

21. ## probability

The offices of president, vice president, seceretary, and treasurer for a club will be filled from a pool of 12 candidates. Five of them are members of the debate team. What is the probability that all the offices are filled by memebers of the debate team?

22. ## Physics

If a 20 kg object fell to the surgace of the Earth from a height of 30m, what would its final velocity be? (work from the energy standpoint)

23. ## chemistry

Fumaric acid, which occurs in many plants, contains, by mass, 41.4% carbon, 3.47% hydrogen, and 55.1% oxygen. A 0.050-mol sample of this compound weighs 5.80 g. The molecular formula of this compound is can you show me the formula

24. ## chem

If 50.0 mL of a 0.10M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution?

25. ## chemistry

Fumaric acid, which occurs in many plants, contains, by mass, 41.4% carbon, 3.47% hydrogen, and 55.1% oxygen. A 0.050-mol sample of this compound weighs 5.80 g. The molecular formula of this compound is

26. ## Math

given a jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting no yellow marbles? I got -

27. ## writing

Identify the nouns using P for a proper noun, C for a common noun, and COL for a collective noun. It was written in Philadelphia at the Constitutional Convention. Fifty-five representatives from a dozen states drafted the document between May and September

28. ## GEOMETRY

1 SPOOF IS A SET OF ALL PURRS. 2 SPOOF CONTAINS AT LEAST TWO DISTINCT PURRS. 3 EVERY LILT IS A SET OF PURRS AND CONTAINS AT LEAST TWO DISTINCT PURRS. 4. IF A AND B ARE ANY TWO DISTINCT PURRS, THERE IS ONE AND ONLY ONE LILT THAT CONTAINS THEM. 5. NO LILT

29. ## algebra

Melissa is 31 years younger than her dad. The sum of their ages is 61. How old is Melissa? How old is her dad?

30. ## Physics

Two masses of 4.25 kg each, connected by a string, slide down a ramp making an angle of 44° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.31. The coefficient of kinetic friction between m2 and the ramp is 0.12. Find

please help me, please. a farmer is building a circular corral to hold a live stock. with distances measured in metres, the shape of the corral is modelled by the equation x squared plus y squared equals 64. find length reqiured for the fencing of the

32. ## SAT

is there any helpful practice sat tests online other than the college board? i'm taking the test this saturday and i don't feel like i'm ready for it. i have studied the SAT prep book that i have, as much as i can. i especially need help in the math and

33. ## chem

Cola contains H3PO4. In order to determine the concentration of phosphoric acid in 50.0 mL of cola, a precipitation reaction with excess silver nitrate was carried out. The product, silver phosphate, was dried and found to weigh 0.0576g. What is the

34. ## BIOLOGY

Human tissue cells seem to fit together like pieces of a jigsaw puzzle. How is this arrangement of cells helpful to an organism? The presence of membranes around organelles indicates increasing complexity. Why do you think the presence of such membranes

35. ## Physics

If a 20 kg object fell to the surgace of the Earth froma height of 30 m, what would its final velocity be? (work problem from the stanpoint of linear motion)

36. ## physics

The forces acting on the arm of a person lifting a dumbbell. The force F is the force pulling on the hand due to the weight of the dumbbell, the force Warm is the weight of the arm and T is the tension due to the muscles connecting the arm and the trunk.

37. ## Chemistry

A beaker with 150 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.90 mL of a 0.480 M HCl solution to the beaker. How much will the pH change?

38. ## physics

Five forces act on an object: 1: 60 N at 90 degrees, 2: 40 N at 0 degrees, 3: 80 N at 270 degrees, 4: 40 N at 180 degrees, and 5: 50 N at 60 degrees. What is the magnitude and direction of the 6th froce that would produce equilibrium?

39. ## math

How long will it take a bus traveling at 60 miles per hour to overtake a car traveling at 40 mph if the car had a 1.5 hour head start?

40. ## science

i need to answer these statements true or false:- ive answered some but stuck on others. 1)only animals respire - false 2)respiration uses oxygen 3)respiration uses up carbon dioxide 4)only green plants photosynthesise-true 5)all living things respire-

41. ## chemistry

2H2O2 --> 2H2O +O2 If a 250mL bottle of hydrogen peroxide solution containing 3% H2O (by mass) completely decomposed how many liters of gas would it generate. Assume that one mole of gas occupies a volume of 22.4 L and that the density of the solution is 1

42. ## language arts

write a sentence using a present, past, or future tense verb. rewrite your sentence using a perfect tense verb. can you just show me one example.. thanks xx

43. ## physics

you drag a heavy box along a rough horizontal floor by a horizontal rope. Identify the reaction force to each of the following forces: (a) the pull of the rope on a box (b) friction force oin the box (c) the normal force on the box (d) weight of the box

44. ## probability

A batch of 350 raffle tickets contains 4 winning tickets. You buy 4 tickets. What is the probability you have no winning tickets? b.) all winning tickets? c.) at least 1 winning ticket? d.) At least 1 non-winning ticket?

45. ## Biology

CAM (crassulacean acid metabolism) plants such as the cacti differ from standard C4 plants such as corn in which of the following ways? a. CAM plants minimize photorespiration whereas C4 plants do not. b. CAM plants use both mesophyll and bundle sheath

46. ## AP Stats

If a distribution is mound-shaped and symmetric, what percent of homes will have a monthly bill of more than \$115? The mean monthly bill is \$125 and has a standard deviation of \$10.

47. ## economics

When a firms long run avg cost curve is horizontal for a range of output, then in that range production displays: a) constant avg fixed costs b) increasing returns to scale c) constant returns to scale d) decreasing returns to scale i think d

48. ## college Accouting

Bennis Company has the following comparative balance sheet data. BENNIS COMPANY Balance Sheets December 31 2011 2010 Cash \$ 15,000 \$ 30,000 Receivables (net) 70,000 60,000 Inventories 60,000 50,000 Plant assets (net) 200,000 180,000 \$345,000 \$320,000

49. ## chemistry

What is the molar concentration of sodium in a 200mL solution prepared from 1.359 grams of sodium phosphate?

50. ## FINANCE II

THE EXTENT TO WHICH INVENTORY FINANCING MAY BE USED DEPENDS ON?

51. ## math

A basketball tournament starts with 64 teams. After one loss the team is out. How many games will the winning team play in the tournament?

52. ## Algebra

1. -21=p-13 2. -8=14-p 3. -6-v-3 1/2 4. -7=-x 5. 10=n/5 6. n/12=-12 7. 3n=-27

53. ## world geography

rice is grown throughout southeast asia in flooded: A)****cultivations B)lodes C)paddies D)cyclones which of the following challenges do southeast asian countries face in thier efforts to protect thier enviornment? A)managing scarce water resource

54. ## Physics

A 0.20-kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.

55. ## Social studies

Which of the following is an example of an analogy? A) The results of this survey showed that people like our product more than our competitor's product. B) There is a national trend toward healthier eating; as a result we should see an increase in the

56. ## Chemistry

A compound was found to contain copper and chlorine. The mass of the compound was 351 mg. The amount of copper in the sample was found to be 225 mg. What is the empirical formula for the compound?

57. ## college

A box contains 4 red and 3 blue chips. What is the probability when 3 chips are selected randomly that all 3 chips will be red if select chips with replacement?

58. ## physics egg drop

What is the best idea for an egg drop project. it has to survive a 5 meter drope without craking or breaking open.(grade A egg wich is a bog egg). The desinge or idea has to be able to be opened and have the egg in hand within 10 sec, so packing it into

59. ## Physics

a standard man intending to do reverse curls in a gym. He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 140 kg, what is the tension in each of his shoulders? Consider the weight of the arm and the

60. ## Algebra 1

DEfine a variable and write an equality to model each situation. In many states, you must be at least 16 years old to obtain a driver's license. At least 350 students attended the band concert Friday night.

61. ## Physics

a bottle is given a push along a frictionless tabletop and slides off the edge of the table (a) what forced are exerted on the bottle while (i) it is being pushed (ii) on the table free of push(iii)falling from the table to the floor. (b) what is the

62. ## math - equivalent expression

This is just a quick question. I need to use the distributive property to write an equivalent variable expression. the problem is 8(x+6). would 14/x be a valid answer? and also if possible, could someone explain how this works?

63. ## per.finance

What might be the savings goal for a person who buys a five-year CD paying 4.67 percent instead of an 18-month savings certificate paying 3.29 percent? i just do not get this

64. ## Chemistry

Please help me....are these questions right or no? If not can you help me...any suggestions please? 7.(14). Which of the following is a salt? a. HNO3 b. H2SO4 c. CaSO4 d. NaOH e. NH3 I put down C- CaSO4, is that right or am I way off track? 8.(15). Which

65. ## Physics

A spaceship of mass m travels from the Earth to the Moon along a line that passes through the center of the Earth and the center of the Moon. (a) At what distance from the center of the Earth is the force due to the Earth five times the magnitude of the

66. ## math

Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how any different ways can a winning quintuple be selected? What is the

67. ## world geography

what do australia and new zealand must import? machinery and raw materials to set up export manugfactoring

68. ## college accounting

For its fiscal year ending October 31, 2010, Molini Corporation reports the following partial data. Income before income taxes \$540,000 Income tax expense (30% \$390,000) 117,000 Income before extraordinary items 423,000 Extraordinary loss from flood

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate.

70. ## PRE-ALGEBRA

Paint costs \$21 per gallon is to be mixed with 6 gallons of paint thinner costing \$5 per gallon to make a paint that can be \$15 per gallon. Compute how much paint mixture will be produced.

71. ## math

A group of students are standing in a circle. Each student faces someone across the circle. If student 2 faces student 9, how many students are in circle?

72. ## Physics

Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 360 km above the earth's surface, while that for satellite B is at a height of 720 km. Find the orbital speed for each satellite.

73. ## POPULATION

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate.

74. ## Physics

a standard man wants to do reverse curls in a gym. He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 140 kg, what is the tension in each of his shoulders? Consider the weight of the arm and the weight of

75. ## Chemistry 130

Can someone please help me and let me know if these questions and answers are correct? I just need a second opinion…and if there not correct can you help me…please?!? 1.(3). In the Arrhenius definition, an acid is a substance that a. turns litmus paper

76. ## world geography

the great barrier reef consists of thousands of small: A)continental islands B)lichen reefs C)coral reefs D)volcanic reefs my choice is c

77. ## English

Hello. I was wondering if you can please assist me with writing a short paragraph comparing Baldwin's account of the Titanic with Rosenthal's account of his visit to Auschwitz. While doing so I have to explain how the tone and purpose of each story is

78. ## Physics

An 11,000 N test car travels 44.5 m before stopping from an initial speed of 28.7 m/s on dry horizontal pavement with its wheels locked. (a) make a free body diagram of this car while its slowing down. (b) what external force causes it to slow down. (c)

79. ## simple subjects

The rules require that each contestant make his or her own kite.

80. ## world geography

because _____,oceania became a region of many different languages A)various cultures groups refused to speak to one another B)each group considered its language a scared gift not to be shared C)**indigenous peoples were separated by mountains deserts and

81. ## Science

The water we drink today is the same water that the dinosaurs once drank. Please explain answer.

82. ## Algebra

Two planes are 4,800 miles apart, and their speeds differ by 200 mph. They travel toward each other and meet in four hours. Find the speed of the slower plane. HELP!!!!!

83. ## Physics

Imagine a right-angle triangle with angle θ = 40o on the left. The serves as an increasing slope. On the slope is an object of mass m1= 340 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is

84. ## Chemistry

how many moles of silver are contained in 1.00 kg of silver, can you show me the set up for the problem

85. ## Physics

a standard man intending to do reverse curls in a gym. He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 140 kg, what is the tension in each of his shoulders? Consider the weight of the arm and the

86. ## Math Analysis (similar to my previous question)

How would you set this one up as well? 5. You have up to \$30,000 to invest. Your broker recommends investing in AAA bonds yielding 8% and B+ bonds yielding 12%. You decide to invest at most \$12,000 in the B+-rated bond and at least \$6,000 in the AAA bond.

87. ## 2 masses, pulley on a frictionless incline

an object of mass m1= 311 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a second object of mass m2 = 355 g on the adjacent horizontal surface. Further, an external force of

Round to the place of the underlined digit. example 16 the 1 is underlined.

89. ## Physics

A standard man wants to do reverse curls in a gym. He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 140 kg, what is the tension in each of his shoulders? Consider the weight of the arm and the weight of

90. ## physics

a bottle is given a push along a frictionless tabletop and slides off the edge of the table (a) what forced are exerted on the bottle while (i) it is being pushed (ii) on the table free of push(iii)falling from the table to the floor. (b) what is the

91. ## biology

Name the three substances that are produced when water molecules are broken down during the light reactions.

92. ## world history

What is the historical significance of the stamp act?

93. ## World History

What contributions did Egypt made to the world?

94. ## Kinematics. Newtons Laws

A standard man does reverse curls in a gym. He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 127 kg, what is the tension in each of his shoulders? Consider the weight of the arm and the weight of the

95. ## chemistry

how many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated

96. ## math

What is the distance between 7 over 10 and 3 over 5

97. ## Physics

Imagine a right-angle triangle with angle θ = 40o on the left. The serves as an increasing slope. On the slope is an object of mass m1= 340 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is

98. ## chemistry

What is the percentage of sulfur in copper(I) sulfide, Cu2S

99. ## Math

A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15 hours. Assume a normal distribution of backup power device lives. What proportion of these batteries can be

100. ## Civics

I have just one more question. Should Congress play a greater role in the formation of American foreign policy? Why or why not? I think Congress shouln't, because they may not want the president to reach an agreement with another country, so that country

101. ## MATH 116

In your industrial oven, you bake two baking sheets with 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies. Write an expression that illustrates the total cost of all baked goods in the scenario above

102. ## Com 150

Before you write your expository essay, you must organize your ideas. One way to organize content is by creating a formal outline. Normally, an outline organizes only the body of your paper. Although your thesis statement appears in your introduction when

103. ## simple subjects

Last year I made a beautiful red box kite.

104. ## Writing

would this sentence be using the word incognito as an adverb or noun? The superstar went incognito so that she could enjoy her vacation without any autograph signing.

105. ## Stats

Suppose that you are given the following information about the freshman year GPAs and the SAT scores of students entering a certain college: Mean SAT= 1125, Standard Deviation SAT= 150, Mean GPA= 2.68, St. Dev. GPA= 0.82 and r=0.65. a)Use the above

106. ## Math

Could someone show me how you would do the following question. Determine the roots algebraically by factoring: x^3 - 8x^2 - 3x + 90= 0

107. ## biology

WHy is it better to use a wet mount preparation rather then a dry one? are plant and animal cells prokaryotic or eukaryotic? WHy do cells have different shapes and sizes?

How does the rate of corrosion of iron on the moon compare to that on earth? I need enough info to write a whole paragraph on it...plz help

109. ## Statistics

A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the

110. ## Physics

A box weighing 5kg sits on a box weighing 10kg. The static friction between them is .5. There is no friction under the bottom box. How much tension is needed on the bottom box to make the top box slide?

111. ## Physics

Consider two tennis balls on a flat table. The two balls touch each other and are at rest. Which of the following equations is Newton's law in the vertical direction for the tennis ball closer to the observer? use N for normal forces, F for contact forces

112. ## science

what is another term for states

113. ## Physics

An object of mass m1= 203 g is on an inclined surface, that is increasing. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a second object of mass m2 = 598 g on the adjacent horizontal surface via a pulley

114. ## Science

(microscope crossword puzzle)What is a 6-letter word for eyepiece and the word begins with an "O?"

115. ## algebra

Will you please check this and make sure that I am right? 26. 5>-3x+4 or 9< equal to -3x+2 this would be (-infinate,-7/3] & (-1/3,infinante)

116. ## Media Law

In what ways does the history of copyright law impact on the nature of copyright law today?

117. ## Self Reflection Essay

I need to write a self-reflection essay on a presentation for Oral Hygiene that I did, but I don't really understand what or how to start this

118. ## Math

What is another way of naming 541,000?

119. ## algebra 2

find the x and y intercept of the function y=3x+4 y=x^2+7x+12

120. ## Statistics

A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

121. ## Physics

Two objects are in contact on a frictionless surface. A horizontal force is applied to one object as shown in the figure below. Use m1 = 1.2 g, m2 = 254 g and F = 0.7 N to find the force between the two objects.

122. ## elementary social studies

natural,capital and human resources are called the factors if what?

123. ## science

Nutrition for the growing child

124. ## Science

can some one tell does composites produce a sulfuric acid when it erupts or does any volcanoes produce sulfuric acid please help urgent

125. ## world history

how did japanese feudalism evolve?

126. ## Math

given a jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second,what is the probability of getting at least one red marble and

127. ## Spanish (URGENT)

I'm learning about the irregular verbs "Conocer" and "Saber" The teacher told us how to differentiate between the two and when to use which. But I still find it very difficult to know when to use which one. Can anyone help? Are there any tricks or tips

ok my teacher just assigned me this wikid stupid worksheet with a riddle whom do you see at the bank if you need to borrow money?

129. ## social

The direct approach for delivering bad news is best for persons who A) you do not know well. B) prefer straightforward messages. C) are unfamiliar with your company. D) All of these. im not sure if the direct approach is based on people knowing each other

130. ## physics

A child is pushing a shopping cart at a speed of 1.5 m/s. How long will it take this child push the cart down an aisle with a length of 9.3 m?

131. ## world geography

most countries of south pacific region: A)came independent in the 1700s b)came independent in the 1800s C)came independent in the 1900s D)**have yet to achieve independence

132. ## Statistics

A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

133. ## Statistics

A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a

134. ## math

how knowing the number of pennies in one jar can help you estimate the number of pennies in a second jar that is four times as large. give me an example.

135. ## science

please could someone help me with these question please i have loked on websites but i am still stuck. true or false and i need to write a comment why:- plants photosynthesise 24 hours a day respiration uses up carbon dioxide thanks guys!

136. ## math

Travis earned \$214 for each week of work. At the end of the year, Travis’s total income was \$10,700. How many weeks out of the year, did Travis work? Write an equation to show your answer. Variables and Functions

137. ## chemistry

What it the percentage of sulfur in copper(I) sulfide, Cu2S

138. ## simple subjet

A fifteen-year-old girl was awarded first prize a brand-new kite.

139. ## biology

Explain how the light reactions would be affected if there were no concentration gradient of protons across the thylakoid membrane. This is not a homework question. It's a 'challenge', if we want to do it. So I'm just interested :)

how you can use a hundred chart to subtract 12 from 46

How many different four-digit numbers can you make from the digits 1,2,3, and 4 if each digit is used only once?

142. ## math

How would I find the deriviative of: (x^3/3) + (x^2/2) +x

143. ## math

how do you write the math expression for the product of 82 and g

144. ## Cultural Diversity

Post your response to the following: If someone made the below statements to you, how would you explain that the statements are misconceptions? Include whether you think most Americans believe these misconceptions, and why or why not.

145. ## biology

i am writing this lab in seed germination and this is my hypothesis: If there is high amount of salt in the soil then it affects the biological process. i don't know how to explain it i mean the hypothesis is clearly explained... how to expand it ? or

146. ## math

What are consecutive numbers? I don't get this question, "Is it possible that 3 consecutive numbers can be prime factors?

147. ## Chemistry

two hydrates were weighed, heated to drive off waters of hydration, and then cooled. The residues were then rewieghed. Based on the follwing results, what are the formulas of the gydrates? Compound. Initial mass. M after cooling NiSO4*xH2O 2.08 1.22

148. ## Spanish #2 (URGENT)

Can someone check my work? Create a sport skit/presentation using commands and actions. Escuchanos! Vamos a enseñar cómo jugar al futbol. Pon en los zapatos de fútbol. Trae un balón de fútbol. Va al campo. Golfea el balon con el pie. Corre al balon y

149. ## simple subjects

Fifty contestants are competing for first prize this year.

150. ## social studies

WHY DID EXPLORERS COME TO THE NEW WORLD/

151. ## Science

Suppose you are on a ship somewhere in the Atlantic Ocean. You take sightings on Polaris and find that it's altitude is 52 degrees. You're told that a certain star is on the prime meridian at midnight Greenwich time. This star is on your meridian at 4 A.M

I would like to know about the history of the omads of North Aerica?

153. ## Physics

an object of mass m1= 311 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a second object of mass m2 = 355 g on the adjacent horizontal surface. Further, an external force of

Travis earned \$214 for each week of work. At the end of the year, Travis’s total income was \$10,700. How many weeks out of the year, did Travis work? Write an equation to show your answer. Variables and Functions Solve problems 1–6. x 1 2 3 4 y 5 10

155. ## LANGUAGE ARTS

ANTIETAM WAS THE MOST DEBASTATING ONE -DAY BATTLE OF THE CIVIL WAR. IN THAT SENTENCE WAS IS THE VERB BUT IS IT CONNECTION ANTIETAM AND BATTLE-LINKING VERB

156. ## math 117

Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office

157. ## Media Law

What are the most pressing challenges facing U.S. copyright enforcement interests today in the context of the proliferation of overseas, especially third-world copyright piracy?

158. ## AP World History

describe the major classical period trading patterswithin and among China,India, and Mediterranean?

159. ## Statistics

A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the

160. ## Statistics

A research article included the following table: Mean Score on Four Questionnarie Scales Before and After the Experimental Manipulation. Questionnaire Before After Change Dominance 18.42 16.31 -2.11 Independence 17.25 21.38 4.13** Conformity 18.97 17.20

161. ## Physics

Three objects are connected as shown in the figure below. They move along a horizontal, frictionless surface, and are pulled to the right with a force Fext = 2.4 N. With the three mass values given as m1 = 604 g, m2 = 744 g, and m3 = 693 g. Calculate the

162. ## Geography Hook for Presentation

Were doing a 5 minute presentation to the class on tornadoes comparing the Tornados in Region, to Barrie Canada. Just wondering if anyone had any creative ideas we could use to hook the class in to this topic! any suggestions would be wonderful, Thanks

163. ## sci

what is in common with humans and yeast? 1. 2. 3.

i need a picture with all the contents

I have to write a poem about a memory and it says include a sentence of a question or feeling you had at that time and i don't quite get that. Also i just forgot what a stanza(spelling?) written like. Any help? Thank you!

166. ## drwls

thankyou for your help its helped me alot you are a star!

167. ## science

Does anyone have some good info about plant and animal cells?

168. ## math

when you put together unequal groups,can you only add?

169. ## Proper Grammar

I am just editing my essay for my one class and this is a question I always get stumped on which is the proper way. Would a comma or period go inside the quotation marks, or outside? Example, "The dog ran extremely fast." "The dog ran extremely fast". and

-2x^2

171. ## Physics

There is a 5kg box sitting on top of a 10kg box. The static friction between them is .5. What is the maximum tension that can be placed on the bottom box without causing the 5kg box to slip. The surface is flat.

172. ## chemistry

1a. You fill a small graduated cylinder with exactly 10.00 ml of distilled water with a temperature of 20.0oC which weighs 10.00 grams. You pour out the water and put in 10.00 ml of ethanol into the same graduated cylinder which weighs 7.893 grams. What is

173. ## social studies

why did people settle in southern mesopotamia?

174. ## Math

I need the answers and the work shown steb by step today pls^^ For each direct variation find the constant of variation.Then find the value of y when x= -5 1.y=2 whne x=7 2.y=-2 when x=2 3.y= 17 when x=-4 y varies directly with x. 1.if y=6 when x=2,find x

175. ## math

Write each ratio as a fraction in simplest form : 11 1/3 out of 50 2/3, 5 1/4 out of 20 3/4, 28 1/2 : 30 1/4

176. ## algebra 1

Determine the solutions to the quadratic equation -10x2 + 30x - 20 = 0.

177. ## science

What is a specific characteristic used to classify organisms?

178. ## PRE-ALGEBRA

A nurse wishes to to add water to 60 ounces of 20% solution of benzalkonium chloride to dilute it to an 8% solution. How many ounces of water does she need to add?

179. ## Chemistry II

2NOCl--->2NO + Cl2 Time(s) [NOCL)(M) 0 0.200 575 0.158 995 0.137 2080 0.102 a) Calculate the rate constant, k, and include units. b)What is the average rate of reaction between time 0 and 995 s?

180. ## PHYSICS

Three objects are connected as shown in the figure below. They move along a horizontal, frictionless surface, and are pulled to the right with a force Fext = 2.4 N. With the three mass values given as m1 = 604 g, m2 = 744 g, and m3 = 693 g. Calculate the

181. ## Accounting

On Jan 1, 2009 the following activitis occurred: a) ICDI, a consulting services company, was orgainized and issed 10,000 shares of capita stock in exchange for \$500,000 cash. b)UCDI entered into an agreement with a landlord and paid \$60,000 or 6 months

182. ## english

Draw a line under the complete predicate. Circle the simple predicate.. My hikers' club went to the Mojave Desert. We drove to Joshua Tree National Monument. I climbed boulders with our group leader.

183. ## simple subjects

Our tour guided took us to some of the shops after lunch.

184. ## Psychology

How would you explain the conduction of an action potential and release of neurotransmitters in the brain to your young brother or sister?

185. ## scientist

Scientists do their experimental tests more than once, so they can reduce the effects of chance errors. This is called conducting______________. I need help with this one.

186. ## introduction to accounting

the proprietos of two businesses, L.L. sams company and Melinda Garcia career services, have sought loans form you. to decide whether to make the loans, you have requested thier balance sheets

187. ## Physics

Imagine a right-angle triangle with angle θ = 40o on the left. The serves as an increasing slope. On the slope is an object of mass m1= 340 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is

188. ## Algebra

How do you change an equation to standard form (Ax+By=C) when given the slope and a point on the line? Does A,B, or C represent anything singificant like slope or x or y intercept?

189. ## math

Use the associative property of addition and the distributive property to justify that a(b+c+d) = ab +ac+ad Help? I don't know what it's asking..

190. ## math

Thanks for all of the math help!!

191. ## chemistry

What it the percentage of sulfur and copper(I) sulfide, Cu25

192. ## writing

I have to use the word wanton in a sentence as a noun, I can't come up with anything, any suggestions?

193. ## MATH

FOLLOW THE ORDER OF OPERATIONS TO FIND THE VALUE OF EACH EXPRESSION. 45 DIVIDED BY 9 MULTIPLE 3 =

194. ## algebra

a car goes at a constant speed for 120 kms, on the way back he goes at half the speed. he drives for a total of 4 hours and 30 minutes. what are the two speeds?

195. ## world geography

the word aborigine comes from the latin ab orgine and means: A)"the people" B)**"from the beginning" c)"out of the earth" D)"to the end"

196. ## hsitory

what caused the Punic Wars? how did the wars contribute to Rome's empire?

197. ## history

what evidence supports that the immigrants that came in the late 1800s improved communites and the nation?

198. ## Math

What does the digit 4 mean in the number 974,233

199. ## math

I'm doing a survey for class and I need 10 people to answer the following question with a simple yes or no: Do you eat some type of vegetable everyday?

200. ## math

The question is 25squareroot symbol 24 divided by 5 square root symbol 2

201. ## english

how does the poet use the image to promote his point of view in the poem Vulture

202. ## Civics

Many American presidents have achieved more success in foreign policy than in domestic affairs. Explain why this may be so.

203. ## MTH 156

How do the ideas of divisibility and multiples relate to the studey of fractions?

204. ## socials

look up these people or places and state who or what they are: Bastille: royal prison and fortress Corday: a Girondist who assassinated a leading Jacobin, Jean-Paul Marat Feudal: economic and social Girondists: One of the most important clubs, whose

205. ## world geography

east timors violent fight for independence devolped primarily from: A)***ethnic differences and conflicts between christians and muslims B)u.s involement in indonesian affairs C )the activities of french colonist in indonesia in the 1700s D)the rise of

206. ## w.g

early cultures devolped in southeast asia through: A)extensive marititme trade B)***isolated pockets of ethnic devolpment C)contact with europeans traders D)contact with christians missionaries my choice is b

207. ## math

A group of students are standing in a circle. Each student faces someone across the circle. If student 2 faces student 9, how many students are in circle?

208. ## Mass Communication Studies

What legal issues must be considered when digitally manipulating images downloaded from the Internet for use in a new book?

209. ## Algebra 1

What should happen if you enter a number on a calculator and press the reciprical key twice? Why?

210. ## Agebra 1

Is it possible for the additive inverse of a number to be its reciprocal?

211. ## English (The Tempest)

hi Can someone explain to me about the theme of Illusion of Justice? if i have a question like analyse the theme of illusion of justice?? as an answer..should i talked how Prospero took his revenge against those who have betrayed him...by Ariel and

212. ## science

explain how gravitational pull of the sun and inertia keep the earth in orbit around the sun?

Describe the driving business forces in both the foreign and domestic environment. In what ways do they operate differently? Why? Provide an example.

214. ## world history

What is a good picture or symbol for the second continental congress

215. ## english

what is the definition of a "stressed syllable"

216. ## SAT sentence completion

DESPITE stephanie's dog's ________appearance, she spent _______________ amount on grooming i put despite stephanies dogs orderly apperance, she spent an enormous amount on grooming the answer: despite stephanies dogs disheveled apperance, she spent an

217. ## PRE ALGEBRA

On an NBA team the two forwards measure 6'8" & 6'6" and the two grounds measure 6'0" & 5'9". how tall a center should they hire if they wish to have a starting team average height of at least 6'5" ?

218. ## chemistry

How does the number of bonds in a carbon chain affect its melting and boiling points?

219. ## Language

Instead, he enjoyed looking for hours and hours... In this phrase is the word looking a noun, adjective,verb, or an adverb?

220. ## chemistry

The cost on the shipping of chemicals is dependent upon the weight of cargo upon loading. You have a choice of purchasing 9,000 gallons of ethanol from Florida or Minnesota. The temperature of the cargo leaving Minnesota is 15.0oC while the temperature of

221. ## math

THanks for your help with the last question, but now I have anew one. Can 2 consecutive whole numbers be prime factors. THanks to all who answer. Laurel

222. ## language

Does anyone have any good morals or ideas for writing a parable?

223. ## science

How do I find what are challenges and urbanization in the 1996 Dubai awards? Some ideas on what to look for

224. ## science

I am not really sure about the cell thing, I am just not really getting the full concpet.

225. ## Calculus

f(x) = sq.root(e^2x+1), then f'(0)= a. -sq.root(2)/2 b. sq.root(2)/4 c. sq.root(2)/2 d. 1 e. sq.root(2)

226. ## Calculus

y = ln(3x+5), then d^2y/dx^2 = a. 3/(3x+5) b. 3/((3x+5)^2) c. 9/((3x+5)^2) d. -9/((3x+5)^2) e. -3/((3x+5)^2)

227. ## U.S goverment

what were the reasons our fathers created 3 different branches of goverment??

228. ## PE

What is BTEC Sport and what is it about?

what is a part of the earth that is shaped in a special way, is that a landform

What might be the benefits of knowing the organelles of a cell?

WHICH OF MNEWTONS LAWS EXPLAINED WHY THE BALLON MOVED ? WHY?

232. ## math

A)Use the quadratic equation: Tickets=-0.2^2+12x+11, to determine the last day the that tickets will be sold.(Note: write answer in terms of the number of days after ticket sales begin, x=1 is the day tickets go on sale) B)Will tickets peak or be at a low

233. ## French

Can anyone give me ideas on how to learn the verb 'avoir' and to know the subject pronouns. Thankd

234. ## Kinematics. Newtons Laws

Two objects are in contact on a frictionless surface. A horizontal force is applied to one object as shown in the figure below. Use m1 = 1.2 g, m2 = 254 g and F = 0.7 N to find the force between the two objects.

235. ## social studies

what does place mean?

what does property mean in 3 rd grade math example 4+8= 12 find the property

9m + 45-3=60 What does M equal.

238. ## Science

why cant you see cytoplasm in any light microscope power?

239. ## Grammar

Analogies-- 1. Fabricate::Excuse a.Sew::Needle b.Interview::Reporter c.Tell:Story 2.Martial::Weaponry aSold::Sales Person b.Soft::Wool

240. ## algebra

what are at least 3 points that equals this equation 3+y=(x-5)^3

241. ## math

solve 2/3 + 5/8

242. ## math

use the digets 2,4,6,and 8 to create an expression with a value of 2

243. ## math

Decide if the following statement is true: Two concurrent lines can never be perpendicular. Explain why or why not?

244. ## Political Science

Any one willing to help with a paper i will offer \$

245. ## rr

What insights or reactions do you have concerning what you now know about the field of business?

246. ## Language Arts

What is a good HOOK or eyecatcher for this topic? Topic: The importance of Computers in school.

247. ## math

Find all numbers for which the rational expression is undefined 9 divided by 8w + 9

248. ## math for 6 grade

write and solve an eqution for the following: there are 17 children in the class. 5 more join the class. how many students are in the class.

249. ## science(cells)

CAN YOU SEE THE CYTOPLASM OF A CELL IN ANY LIGHT MICROSCOPIC POWER?

250. ## Health

Discuss coding for obstetrics,including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

251. ## geography

name the region that is east of the fall line of virginia

252. ## Math 11

with quadratic functions how do you know if a parabola on a graph is supposed to open upwards or downwards? ex. y=-4(x+1)2+4 [The 2 after the bracket is a square)

253. ## algebra

need to solve this equation 3/4 k - 1/6 =1/2

254. ## SOCIAL STUDIES

without our two great political parties cutting acrOSS ECONOMIC AND GEOGRAPHIC INTEREST, DEMOCRACY AS WE KNOW IT COULD NEVER HAVE BEEN MADE TO FUNCTION, THE AUTHOR OF THIS STATEMENT PROBABLY MEANT?

255. ## math

he threw 3 balls and scored 19 points. How much is each ball worth?

256. ## drbob222

thankyou for your help its helped alot.you are a star!

257. ## french

can you check these you cannot eat a lot of chocolate tu ne porrais pas manger beaucoup de chocolate you could go running every weekend tu porrais aller courir chaque week-end you couldn't go swimming after you just ate tu ne porrais pas aller nager apres

258. ## chemistry

Sorry bobpursley for the multi post< i kept posting it wrong. thanks for yur help

259. ## Physics

you a resident physician are reading the medical chart o a normal adult female patient carelessly one of the nurses has entered this nurse's suggestion is physically reasonable: (a) the number is 150 and units are kilograms. (b) the number is 4.25 and the

260. ## history

what is the name of the pennsula east of virginia

261. ## English

What is a just so story?

(4)+6+45=x

264. ## math

6+3h=-3, how do i get "h" by itself?

266. ## social studies

What contributions did Abraham Lincoln make before his death?

267. ## physics

what does the shape of a distance vs. time graph indicate?

268. ## geography

whats the name of one of the states to the west of virgiia

269. ## foundations 4 algebra

what is a central tendency?

270. ## Civics

What is domestic affairs?

271. ## biology

it is everything that occupies a place in the space

272. ## english

how does achebe use the image to promote his point of view

273. ## to mattsricebowl/religion

what is a mapkey

275. ## history

who explored the swamp area in the coastal plain in virginia