1. Physical Science

A 1000-kg car is moving east at 80 km/h collides head on with a 1500-kg car moving west at 40 km/h, and the two cars stick together. Which way does the wreckage move and with what initial speed?

2. chemistry

Find the concentration of Cu+ in equilibrium with CuBr(s) and 0.10 M Br-.

3. Chemistry

In 1909, Robert Millikan performed an experiment involving tiny, charged drops of oil. The drops were charged because they had picked up extra electrons. Millikan was able to measure the charge on each drop in coulombs. Here is an example of what his data

4. probability

A set of five marbles is selected (without replacement) from a bag that contains 4 blue marbles, 3 green marbles, 6 yellow marbles, and 7 white marbles. How many sets of five marbles contain no more than two yellow ones?

5. Math

Which numbers are perfect squares? A) 64 b)900 c)120 d)1000 e)100 F) 10 000 How do u know each number is a perfect square? A) 1225= 35x35 B) 484= 2 x 2 x 11 x 11 C) 2025 = 45(square) the area of this square is 289 square unit. How so u that it's perfect

6. Chemistry

Write the Lewis structure for each ion Al3+ Mg3+ Se2- N3- My question is why does Se2- get a bracket and 8 dots. And the same for N3-. I hope I'm making sense.

7. Physics

A female gymnast weighs 400 N. If she is hanging stationary from a high bar, how many forces are acting on her?

8. chemistry

combustion analysis of a hydrocarbon produced: 33.01 g CO2 and 13.51 g H2O Calculate the empirical formula of the Hydrocarbon. I got CH5 but that doesn't seem right? how do i do this problem?

9. Pre-Calc

Find three examples of the Fibonacci sequence in nature. Write a paragraph for each example. For each example, address the following questions: How does the example relate to the Fibonacci sequence? What portions of each item or situation display the

10. Informal Logic

21{4[1(10)54]}> Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. heavy : weight (Points : 1)

11. English

the poem "At the Lunch Counter" is by Alden Nowlan. I am having difficulty understanding it. any help would be great.

The radius of a niobium atom is 131 pm. How many niobium atoms would have to be laid side by side to span a distance of 1.4 mm?? I know that 10^9 is pm or is it -9??

13. Physical Science

An escalator 14 m long is carrying a 70-kg person from one floor to another 8 m higher. The escalator has a speed of 1.0m/s. How much work does the escalator do in carrying the person to the top?

14. chemistry

What are the Kilojoules needed to melt 24.0g of ice at O degrees C, warm the liquid to 100 degree C and change it to steam at 100 degree C? Thank you,

15. chemistry

What are the joules needed to melt 50.0g of ice at 0 degree C and to warm the liquid to 65.0 degree C? Thank you so much!

16. Chemistry

A flask that can withstand an internal pressure of 2500 Torr, but no more, is filled with a gas at 21.0 C and 758 Torr and heated. At what temperature will it burst?

17. chemistry

write the balanced chemical equation for the reaction that occurs when water is added to anhydrous BaCl2. would it be BaCl2+2H2o --> BaCl2+2H2O

18. Science

what would tides be like if the moon did not exist? a) There would be no tides without the moon's gravity. b) There would be one high tide and one low tide every 24 hours because of the sun's gravity, with the high tide at noon and the low tide at

19. physics

A football is thrown upward at a(n) 37 angle to the horizontal. The acceleration of gravity is 9.8 m/s2 . To throw a(n) 57.8 m pass, what must be the initial speed of the ball? Answer in units of m/s

20. Math

My-law is a recent start-up trying to cater to customers in search of legal services who are intimidated by the idea of talking to a lawyer or simply too lazy to enter a law office. Unlike traditional law firms, My-law allows for extensive interaction

21. Finite Math

Solve the system of linear equations, using the Gauss-Jordan elimination method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions involving one parameter, enter the solution using t for the last variable. If the solution

22. Physics

A basketball player runs down the court, following the path indicated by the vectors A, B, and C in the figure. The magnitudes of these three vectors are: A = 12.0 m, B = 17.0 m, and C = 7.0 m. Let the +x-axis point to the right and the +y-axis point to

23. TRIG

A 5.5 ft tall woman casts a 6.2 ft shadow. Find the angle of elevation of the sun.

24. English

This is about Sound and Fury- Dan Greenburg Where is Greenburg's point stated in his essay and what is his point? How would the meaning be different if Greenburg had ended his essay with paragraph 29?

25. Physics

A crow is flying horizontally with a constant speed of 3.05 m/s when it releases a clam from its beak. The clam lands on the rocky beach 2.05 s later. Consider the moment just before the clam lands. (Neglect air resistance.) (a) What is its horizontal

26. physics

When a large bone such as the femur is broken, the two pieces are often pulled out of alignment by the complicated combination of tension and compression forces that arise from the muscles and tendons in the leg (see the X­ray image in Figure P3.64A). To

27. Essay Check

This is an essay about the article called Rambo's of the road, could you please read it and see if I am getting there? It is supposed to be a critique. Note: This is not a spellcheck or proofread, I just want someone to read it and tell me if it is alright

28. Physical Science

A 1000-kg car moving at 80 km/h collides head on with a 100-kg car moving west at 40km/h, and the two cars stick together. Which way does the wreckage move and with what initial speed?

29. English

Check these English questions for me please? I'm not asking for anyone to do my work for me, Im just not sure if these answers are right and would like a reassurance, preferably from someone who has done the assignment before. 1. Why was literacy a prime

30. Medical teminology

What is the Prefix, Suffix, and word root of the following questions. Antidote asymptomatic benign coagulate convalescence plasma therapy

31. Chemistry

Calculate the amount of 6 M nitric acid you need to add to fully react with .5 grams of copper and add a 20 percent excess.

32. Physical Science

A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?

33. chem101

which of the following compounds have polar bonds and a net dipole moment? a) H3COH b) H3CCOCH3 ALSO PLEASE CHECK THIS, RANK THE FOLLOWING FROM MOST TO LEAST ACIDIC COMPOUND: A)H2SO4>H3CCO2H>H20 B)H3CCH2NH2>H3CCH2OH>H3CCO2H

34. Social Studies

True or False Written records,artifacts,and fossils are other tools used by historians, archaeologist,and anthropologists to study the past

35. physics

A baseball player hits the ball at a speed of 20.1 m/s and an angle of 30 degrees. What is the baseball's horizontal velocity? What is the baseball's vertical velocity? How long does it take the baseball to get 28m in front of home plate?

36. college english -- rhetorical analysis of an ad

my homework is to find an advertisement, website or magazine cover that is rhetorically interesting and persuasive. we have to write an essay analysis of 2 pages to show how the text works to persuade its audience. consider the following questions. 1)what

37. Physical Science

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

38. Logic

Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. heavy : weight dry : wet feather : scale #hot : temperature color : size I placed a # next tom my answer.

39. Physics

A truck speed increases uniformly from 10 m/s to 30 m/s in 20 seconds. Find the ff: a. average speed b. acceleration c. distance covered during the period

40. Physical Science

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

41. Physics

a man walks 10km towards west and then 15 km towards south. Find the resultant vectors, magnitude and direction.

42. science chemistry

what is the purpose of using deinonized water to adjust the Spec 20 to 0 absorbance?

43. United States Government

Complications in the practice of America's ideals occurs because these ideals a. are general principles, not precise rules. b. sometimes conflict with one another. c. are only of of many sources of political action. d. are enduring and powerful. e. All

44. physics

In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.7 m/s at an angle of 15.4° below the horizontal. It is released 0.83 m above the floor. What horizontal distance does the ball cover before

45. Physics

Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 56.6 N to the north. Jenny’s foot exerts a force of 88.6 N to the east. a) What is the magnitude of the resultant force on the ball? Answer in units of N b) What is

46. Physical Science

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

47. Physics

A person driving her car at 54 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection. The intersection is

48. Government US

The United States has two court systems, state and federal. The federal system a. has discretionary jurisdiction over all cases arising in the state system. c. is the only one based on the constitutional doctrine of the separation of powers. e. None of

WRITING TO EXPLAIN. How can you use models to show and name the number 1,400 in two different ways? Explain.

50. Chem

What mass of MgSO4 · 7H2O is required to prepare 700 mL of a 0.342MMgSO4 solution? Answer in units of g.

51. chemistry

Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of metal or pottery vessels. Estimate the size (in liters) of basket needed to hold the rocks and water if 5 L of boiling-hot (100°C)

52. Social Studies

True or False To accurately label exact locations on a map, geographers go to that specific location?

53. Social Studies

Definitions for Government: Communism, Nazism, Democracy, Fascism, Bureaucracy, Socialism, Capitalism. You have 2 cows. The government takes both of them and gives you part of the milk. ( Communism ) You have 2 cows. The government takes one and gives it

54. physics

A baseball player hits the ball at a speed of 20.1 m/s and an angle of 30 degrees. What is the baseball's horizontal velocity? 1m/s What is the baseball's vertical velocity? 2m/s How long does it take the baseball to get 28m in front of home plate? 3

55. AP Chemistry

The Antarctic ice sheet contains an estimated 7.0 million cubic miles of ice. If the entire ice sheet melted, how many feet would the average global sea level rise? The density of ice is about 0.90 g/cm^3. The density of water is about 1.0 g/cm^3. The

56. Chemistry

Given that a sample of air is made up of nitrogen, oxygen, and argon in the mole fractions 78% N2, 21% O2, and 1.0% Ar, what is the density at stp?

57. Physics

A record of travel along a straight path is as follows: (a) Start from rest with constant acceleration of 3.51 m/s2 for 17.8 s; (b) Constant velocity of 62.478 m/s for the next 0.946 min; (c) Constant negative acceleration of −10.9 m/s2 for 3.89 s. What

58. phys 111

i travel 1 km east, than 1 km north, then climb 400m straight up a cliff. what is my distance from my starting point? a= 3i+2j+4k b= i-3j-4k

59. Physics - bobpursely

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4? Physics Help - bobpursley, Sunday, September 11, 2011 at 4:59pm 2, 3, 6 are wrong: Zeroes

60. calculus infinate sums

how many terms of the series 1/(n*(ln(n)^8)) from n=2 to infinity would you have to add to find the sum to within 0.01

61. Algebra

a sprinter ran 100-m dash in 9.92s. What was his soeed in feet per second

62. Physical Science

A boy with a mass of 30 kg jumps off a 3 m diving board. How much kinetic energy does he have just before he hits the water? Answer none. 90 N. 900 J. 1800 J.

63. physics

A person walking with a speed of 1.44 m/sec releases a ball from a height of h = 1.28 m above the ground. Use the point on the ground, directly below where the ball is initially released at the origin of your coordinate system. (a) What is the ball's

64. College Algebra (Functions)

The relation is a function containing two ordered pairs. Reversing the components in each ordered pair results in a relation that is not a function. A) {(0, 2), (0, 3)} B) {(2, 3), (3, 2)} C) {(3, 1), (4, 1)} D) {(4, 5), (2, 3)}

65. Physical Science

A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?

66. trigonometry

1)find the exact value indicated trigonometric function of θ, if θ is the angle is standard position whose terminal side contains the given point. (-2 ,√2); Find cos θ 2) find the length of the arc intercepted by a central angle of 35degree 28' in a

67. Physics

A cable attached to a block of mass 14 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 5.4 N, what is the coefficient of kinetic friction between the block and the floor?

68. HUM 176

Choose the biggest breaking story of the moment. · · Compare and contrast coverage. Compare and contrast information in the stories as well as how are they presented. · Answer the following questions: o What links are included? o How does the commentary

69. chem

How many KJ are released when 75.0g of steam at 100 degree C condenses cools to 0 degree C and freezes at 0 degree C? I set it up like this but it is wrong, What am I doing wrong: 75g x 2260J/1g water x 1Kj/1000J =

70. phys111

I travel 1 km east, than 1 km north, then climb 400m straight up a cliff. what is my distance from my starting point?

71. AP Chem

It takes 58 mL of 0.124 M KOH to neutralize 34.5 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in unites of moles/liter.

72. Chemistry

Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of metal or pottery vessels. Estimate the size (in liters) of basket needed to hold the rocks and water if 5 L of boiling-hot (100°C)

73. math

a desk is 80 cm wide.how many decimeters is that?

74. History

The treaty signed in 1621 by the puritans and the massoasits fair to both sides. If so explain. Oh and what is the difference between pilgrims and puritans. Thanx!

75. biology

Selena noticed that the sand at the beach seemed much warmer than the water. She wondered whether that was because water took more enrgy to heat up than land. I don't understand. What I would like to know here, is what would be the dependent and

76. Chemistry

Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.3 g of iron are to be dissolved in 1.7 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?

77. chemistry

write the balanced chemical equation for the reaction that occurs when BaCl2.2H2O is heated.

78. Physics

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 3.5 s, how tall is the building?

describe yourself mathamatically

80. Chem

How many milliliters of 1.5 M HCl must be transfered from a reagent bottle to provide 25 g HCl for a reaction? Answer in units of mL.

81. General Knowledge

Is it wise to learn two different languages at a time? Such as French and Spanish? What would be two easy languages to learn at the same time?

82. English

does the poem "At the Lunch Counter" have aliteration, assonance, metaphors, similes, onomatapoeia, imagery? I have found it has a few but i'm not sure. I also am not sure about the meaning of the poem and can't find any information about it. Any help

83. marketing

mass marketing is not a viable opttion to build a pfitable brand comment on the following

84. World History

What is it about Greco-Roman culture that creates positive feelings in people???

85. English

I left out the following adjectives. Can you please check them, too? 1) I've got a long face, heavy (thick?), curved eyebrows, oval eyes, a small nose and a round mouth. I've got short, dark, wavy hair. According to the Face Reading Guide I'm (should be?)

86. Physics - Converting

Convert each of the following measurements to its equivalent in metres. A. 1.1cm B. 76.2 pm I don't get how to convert :\

87. Biology

Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. How many cells do you expect will be in this 20 microliters drop you placed under the microscope?

88. Government US

The constitutional provision that federal judges and justices hold office "during good behavior" has a. meant, in effect, that they will serve until they die or choose to retire. b. provided them the opportunity to carry out their duties without immediate

89. chemistry

The area of a pond is exactly 34 square meters, and the average depth is 34. meters. If the density of fish is 12 fish per cubic meter, how many fish can be found in 1/3 of the lake?

90. Math

Mark read that the ancient Greeks use to arrange pebbles to represent numbers. He used square on a grid instead of pebbles to model both triangular and square numbers How can you divide a square number into q two triangular numbers? (6 triangular number)

Please can you help me to solve and get the solution for these problems. how to get the solution please help me question: 1.Find the price of a 10% coupon bond with 10 years to maturity if interest rates: A) increase by 1% B) decrease by 1% C) increase by

92. Language Study

Is it wise to learn two different languages at a time? Such as French and Spanish? What would be two easy languages to learn at the same time?

93. physics

a stone tied at one end of a string of length,l is whirled in a horizontal circle with constant linear speed,v.which of the following expressions describe the relation between the radius of the circle,r and the angle between the string and the vertical

94. English

I still have a few other sentences for you to check. Then, I didn't understand one of your corrections. Thank you for helping me. 1) Why shall I capitalize "the" in the sentence: To the left and to the right of the mannequin respectively there is a sewing

95. Chemistry

Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of metal or pottery vessels. Estimate the size (in liters) of basket needed to hold the rocks and water if 5 L of boiling-hot (100°C)

96. physics

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. (a) How long does it take for the ball to reach the wall if it is 4.2 m away? (b) How

97. Math

your aunt gives you a check on your birthday each year. on your first birthday , she gives you a check for one cent. the next year she gives you 3 cents , then 9. each year she triples the amount of the previous year 's check. how old will you be when she

98. Physics

Problem 21.79 The plates of a 3.2nF parallel-plate capacitor are each 0.25 m^2 in area. Part A - How far apart are the plates if there's air between them? Express your answer using two significant figures. = Part B - If the plates are separated by a Teflon

99. English

the poem "At the Lunch Counter" is by Alden Nowlan. I am having difficulty understanding it. any help would be great.

100. AP Physics

A driver in a car traveling at a speed of 62 mi/h sees a deer 112 m away on the road. Calculate the magnitude of the acceleration necessary for the car to stop just barely missing the deer (assuming that the deer does not move in the meantime). Answer in

101. Physical Science

A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go. What is the speed of the ball when it is let go??

102. physics

a 2kg block is placed on a frictionless wedge that is inclined at an angle of 60 degrees from the horizontal. if you release the block, it would slide down the wedge. it turns out that if you push the wedge to the right with acceleration a, the block will

103. Physical Science

A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward? *I don't understand how to work them*

104. calculus

lim as x-> 0 of 3x/(sin2x)

105. Math

Eggplants in Thailand are 1.24 baht per kilogram, where one dollar is worth 1.37 baht. What is the price of eggplants in dollars per pound?

106. geometry

suppose j is between h and k.use the segment addition postulate to solve for x.then find the length of each segment hj=5x jk=7x kh=96

107. History

The biography of nelson mandela

108. Physics

For the Law of Sines state the formulas, explain them in your own words, and draw a diagram illustrating one of them.

As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation,

110. math

u = m*g*h find the value of h show work please

111. mba

Analyze the following portfolios performance using Jensen index, Treynor index and Sharpe index versus the market: Observed Rate of Return Beta (β) Residual Variance Magic fund 15% 1.5 0.02 Shanti fund 10% 0.5 0.00 Risk-free rate of interest is 50%,

112. calculus

Find the derivative of the function. 1. 2x+5/3x-2 2. (1-x)(1+x^2)^-1 Please show work. TYVM. :)

113. College Algebra

The relation is a function containing two ordered pairs. Reversing the components in each ordered pair results in a relation that is not a function. A) {(0, 2), (0, 3)} B) {(2, 3), (3, 2)} C) {(3, 1), (4, 1)} D) {(4, 5), (2, 3)}

114. English

Thank you very much. I'm having problems in finding antonyms for the following adjectives describing personality. Can you check my list, please? I need to fing synonyms for "nosy" and an antonym for "sensible", "sensitive". 1) How do you call someone who

115. Physics

If a person runs the 100m dash in 10.0s, calculate that speed in m/s and km/h.

116. Algebra

The relation is a function containing two ordered pairs. Reversing the components in each ordered pair results in what relation not being a function. A) {(0, 2), (0, 3)} B) {(2, 3), (3, 2)} C) {(3, 1), (4, 1)} D) {(4, 5), (2, 3)}

117. Physical Science

23. when an electron is displaced in a semiconductor, the hole that's left behind is A. attracted to the negative terminal of the voltage source B. incapable of carrying a charge. C.attracted to the anode of the voltage source. D. considered an impurity in

118. algebra

You make 20 silk flower arrangements and plan to sell them at a craft show. Each flower arrangement costs \$12 in materials, and your booth at the craft show costs \$30. If you sell the arrangements for \$24 each, how many must you sell to make at least \$100

119. physics

A force of 10N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go, What is the speed of the ball when it is let go?

120. physics

In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 55 m/s (around 120 mi/h) in a time of 6.1 s. The mass of the car and riders is 5000 kg. Find the average net force exerted on the car

121. U.S. history

In jeffersons veiw george washingtons action in addressing the whiskey rebellion?

122. chemistry

how do you calculate density of a substance with a mass of 100g and a volume of 48ml

metric system conversions 1)3.68kg = ? g (3.68 kg) (10^-3 / 1kg) = 3.68 x 10^-2 g 2) 568cm = ? m (568cm) (1 m /100cm) = 5.68 m Are these correct?

124. Physics

A hockey puck slides with an initial speed of 43.2 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.036, what is the speed of the puck after 10.4 s?

125. math

A car takes 3 hours to travel 3km at a constant speed on an open road. Calculate the speed of the car

126. physics

The citizens of Paris were terrified during World War I when they were suddenly bombarded with shells fired from a long-range gun known as Big Bertha. The barrel of the gun was 36.6 m long and it had a muzzle speed of 1.48 km/s. When the gun's angle of

127. Physics

An airplane takes off at a constant speed of 331 m/s at an angle of 45 degrees. What is the airplane's horizontal velocity

128. Algebra 2

i need help solving the problem 3x+y=-1 2x+3y=18 using substitution

129. Siddhartha

Why was the ferryman, Vasudeva so important in the book Siddhartha?

130. Math

How would you solve for X if X was the hypotenuse of a 45-45-90 triangle and the other two sides were Square Root of 11?

131. physics

a room which is h = 9.0 feet tall and r = 12.0 feet wide. Attached to the ceiling is a piece of glass (with unknown index of refraction) which is 2.5 feet thick. A laser pointer in the bottom left corner is aimed so that the ray which reflects off the

interview some from 9/11

133. Chem

If 0.03 moles of sulfuric acid is mixed with water to make 266 mililiter of solution, what is the molarity of H+? Answer in units of M.

134. Science

Why doesn't the space station fall toward the earth, instead of remaining in space? a) It is beyond the earth's gravitational pull. B) The earth's gravity is balanced out by the attraction of the sun and other planets. C) Centrifugal force keeps it up. D)

135. English

Could you check if the adjectives I chose are appropriate? Thank you. calm/nervous, quick-tempered easygoing/touchy, think-skinned, crabby determined/indecisive easy-going/stand offish nosy(intrusive, prying, snoopy) / indifferent, uncaring, unconcerned,

136. chemistry

if a pitcher of .75 L of water is removed from the refrigerator at 4 degrees celsius how many killijoules is needed to warm it at 27 degrees celsius, thank you in advance

137. 9/11

Can you find a good 9/11 current event please?

138. Algebra 2

6x=9y-21. 6y=4x+14 plz help...I can't figure out how to do this problem using linear equations with two variables

139. chem

NaC3H5O3 is needed to create 1000mL volume of ringers lactate with 6.5 ph

140. Chemistry

A compound has the empiical fomula CHCl. a 256-mL flask, at 373 K and 750. Torr, contains 0.800 g of the gaseous compound. Give the molecular formula.

141. Finite Math

A dietitian wishes to plan a meal around three foods. The meal is to include 16,200 units of vitamin A, 4,620 units of vitamin C, and 680 units of calcium. The number of units of the vitamins and calcium in each ounce of the foods is summarized in the

142. Biography

I'm currently doing a project on Steve Jobs and one of the question ask "Name of the product or service they created or provide". Would it be true if I put that he created iPhone,iPad, and iPod? Or not because he don't create them but the worker does.

143. biology

Our cat had a litter of kittens yesturday . What characterists is this?

144. Physics

A man is pulling on a rope with a force of 97 N directed at an angle of 68 degrees to the horizontal. What is the x-component of this force? What is the y-component of this force?

What are some compare and contrast topics for Fat Vs. Skinny?

146. Physics

Tyler runs the length of a soccer field (100m). A. How much time is required for him to run the full length at speed v? B. If he runs at 6.0 m/s how long does it take tyler to run the length of the field?

147. Microeconomics

I am having a hard time answering these questions. I just need them explained to me so that I really understand them, when I get ready to take my test. 1. How do changes in demand/supply affect prices? 2. How does a change in demand/supply affect the

148. College Geometry

A circular grassy region with a 12 ft diameter has a 2ft by 3ft reflecting pool in its center. What is the Surface Area of the reflecting pool? What is the Area if the grass?

149. physics

if a 1 kg rock is thrown at a speed of 20m/s, how much kinetic energy does it have?

150. Social Studies

True or False Geographers use maps, globes,and computers to study people and places?

151. English

Can you tell me if these sentences are possible? 1) We have a 15-minute break at 10.20. After the break we have a double period of Italian./ We have double Italian. 2) You use a duster to wipe a blackboard /an eraser to wipe a whiteboard. 3)What mark did

152. College Physics

A hockey puck slides with an initial speed of 43.2 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.036, what is the speed of the puck after 10.4 s?

153. Social Studies

True or False Geography is not used very much anymore?

154. science

It take you 9.5 min to walk with an average velocity of 1.2 m/s to the north from the bus stop to the museum entrance. What is your displacewment?

155. College Physics

Two children are playing on a 178.2 m ­tall bridge. One child drops a rock (initial velocity zero) at t = 0 . The other waits 2.7 s and then throws a rock downward with an initial speed v0. If the two rocks hit the ground at the same time, what is v0 ?

156. college

Evaluate the difference quotient for the given function. Simplify your answer. f(x) = 3 + 5x − x2, f(4 + h) − f(4) h

157. Chemistry

The media you need has .9% NaCl and 2% glucose. How would you make 1 L of this solution?

158. social studies

How did James Fenimore Cooper help in reforming America?

159. Informal Logic

11{1[2(06)06]}> Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats

160. algebra

what is 0.000375 in scientific notation?

161. Algebra 1

Using substitution, solve this equation.. 3x - 5y = 11 x - 3y = 1

162. Algebra

How can i justify my answer in words in the problem -5 - 3 = -8?

163. physics

The speed of a bobsled is increasing because it has an acceleration of 2.3 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The mass of the bobsled and its riders is 230 kg.

164. scientist

Which of the following BEST describes the theory of natural selection?

165. Algebra

What is the answer on 13 - (-15) =? And how can i justify my answer in words with a number line?

166. Physics

A roofing tile falls from rest off the roof of a building. An observer from across the street notices that it takes 0.42 s for the tile to pass between two windowsills that are 3.08 m apart. How far is the sill of the upper window from the roof of the

167. Ethic and law

What is the relationship between ethics and the law in the field of counseling?

168. science

A sound wave, traveling at 337m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.76 s later. How far away is the reflecting object? Answer in units of m.

169. Studying Cultures

what a U.S. manager would need to know about such issues as personal space and rules of social behavior in order to successfully conduct business in India?

170. MATH - Calculus (2)

if lim f(x) = a^3 x->a and if lim g(x) = a^2 x->a calculate the following limit: lim f(x)*(x-a)/(x^3-a^3)*g(x) = x->a

171. 9/11

What exactly happened on this day?

172. biology

im so confused with all of these okay so it tells me to do this table thing and the titles on the top are macromolecule,monomers, and function then it had beneath macro. carbohydrates, protein, lipids, and nucleic acids does anyone know how to explain this

173. Physics

A rowboat crosses a river with a velocity of 3.42 mi/h at an angle 62.5° north of west relative to the water. The river is 0.805 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?

174. English

This is about The perfect Picture- byJames Thom What purpose does Thom's introduction serve and how did it affect you? How would the meaning of Thom's essay change if his essay started with paragraph 2 instead?

175. math

moving straight ahead pg 12 #3

176. math

moving straight ahead pg 12 #3

177. math

use the numbers 3, 5, 6, 2, 54, and 5 in that to write an expression that has a value of 100.

178. History Project Suggestions

Which President's documentary? What documentary would you suggest is more interesting and better to watch for my history project. FDR LBJ Richard Nixon Harry S Truman Jimmy Carter

179. Physical Science

A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go. What is the speed of the ball when it is let go??

180. Math - Linear algebra

Cats cost \$1, dogs cost \$15, and mice cost only \$0.25. I want a herd of 100 animals, and I have \$100, so being a cat lover, it's tempting to get only cats and mice. But I also want a dog, and my cat(s) want mice to "play" with, so the numbers of dogs, cats

181. Algebra 2

Exponential Notation Simplify. (-2)^0-(-2)^3-(-2)^-1+(-2)^4-(-2)^-2 I tried solving this problem a few times and kept getting random answers. The answer in the book says that it is 25 1/4 I do not understand how you get that answer. Thanks For Your Help

182. physics

A rocket is fired at 1500 m/s at an angle of 50 degrees with respect to the ground. a)What are the horizontal and vertical velocities at 10 seconds. b)What is the actual velocity at 10 seconds.

183. physics

A plane flying horizontally at 50 m/s is 2000m from its target. a)At what height must a projectile be released in order to strike the ground target. (neglect air resistance) b)At what velocity will the projectile strike the target? c)What is the angle of

184. IRSC

the sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that 17 inches and a second side that is 1 inch less than twice the thrid side, what are the possible lengths for the second and third

185. algebra

fine each absolute value 5 quesitons: |-2+5| |5| +4 |-5| +4 |5+2| |3 - 7|

186. scienced

how does the race betweebn the tortoise and the the hare the differencde between average speed and instantaneous speed ?

187. Science

Please help Thank you. 1. What will the impact be like for Humanity’s natural resource base and thus economic security if everyone enjoyed the same lifestyle?

188. English

Can you please clarify to me the rule regarding adjective order? I have long, black, curly hair OR I have long, curly, black hair ??? You can refuse to be tested orally only once. (or You can decide to excuse for not being tested orally only once) I don't

189. chemistry

Which solvent would dissolve each of the following compounds?(water, a polar organic solvent, or a nonpolar organic solvent) a) NaI b) H3CCH2CH2OH C)H3CCH2CH2CH2CH2CH2CH2CH3

190. Science

A satellite orbiting at an elevation of 3200 km does what a) Stays beyond the earth's gravity, which is why it stays up there. B) in an elliptical orbit, since its speed is less than the escape velocity. C) Falling toward earth with an acceleration equal

191. chemistry

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process

192. balloon

if an inflated balloon is placed in the freezer as the temperature of the gas of the balloon decrease the speed of the particles will do what

193. Physics - Significant figures

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4?

194. chemistry

how to draw newman projection for different structure

195. Physics help?

Calculate the acceleration if the bullet leaves the gun at 350 m/s. The length of the gun barrel is .40m.

196. Algebra

Solve the equation and check your answer (q+9)/5 + (q-2)/2 = 11/5

197. Math

What property changed(4c + 3c) + 6 to (4+3)c + 6?

How do I solve for T? PI(67.2/2)^2*T*13.6g/cm^3= 5lb*435.6g

199. Algebra

How far in miles is a line of 1,000,000 pennies. Please show chart with 5 instances. Define a variable and write an algebraic expression.

200. science

Simpson drives his car with an average velocity of 48.0 km/h to the east. How long will it take him to drive 144 km on a straight highway?

201. Science

You need to make 50 agar plates. Each plate holds 30mls. Final agar concentration is 2.5%. How much agar powder to you need?

202. Logic

One way to disconfirm the scientific hypothesis that chickens cannot fly would be to ask someone. look very hard for a chicken that can fly. simply assert that chickens can fly. simply assert that chickens cannot fly.

203. Pre-Calculus

Using the difference quotient find M-sec for h=0.5 at x=1. f(x)=2x+5 difference quotient-f(x+h)-f(x)/h

204. World his. Ms. SUE!!

What is it about Greco-Roman culture that creates positive feelings in people?

205. Algebrs

Whats -5 - 3=?

How do I solve for T? PI(67.2/2)^2*T*13.6g/cm^3= 5lb*435.6g

207. math 116

8x 4=4x 7 simplify this is what I come up with is this correct? x = 3/4

208. Physical Science

A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go. What is the speed of the ball when it is let go??

209. Physics

A roofing tile falls from rest off the roof of a building. An observer from across the street notices that it takes 0.42 s for the tile to pass between two windowsills that are 3.08 m apart. How far is the sill of the upper window from the roof of the

210. Geometry

A right triangle and a square share a side. The hypotenuse of the triangle measures 10 cm. One base of the triangle measures 4 cm. Neither the known base nor the hypotenuse is the side that is shared with the square. Find the area of the square.

211. physics

a golfer takes two putts to get the ball into the hole once he is on the green. the first putt displaces the ball 2.7m east and the second 6.95 m south. what is the direction (in degrees S of E)? answer in units of degree

212. physics

A roller coaster travels 101 ft at an angle of 45.7 ◦ above the horizontal. How far does it move horizontally

213. trig

how do you factor completely.. 18x^2+3x-3?

214. physics

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?

215. Algebtra

from 630 feet at the top of the horizon. Due to the curvature of the earth how far away is the city. using d=sqrt[3h/2] where d is the distance in nautical miles and h is the height in feet.

216. Intercultural Communication

what a U.S. manager would need to know about such issues as personal space and rules of social behavior in order to successfully conduct business in China?

Smith Manufacturing is considering the sale of two non depreciable assets, A and B. Asset A was purchased for \$2000 and will be sold today for \$2250. Asset B was purchased for \$30,000 and will be sold today for \$35000. The firm is subject to a 40% tax rate

218. chemistry

would you expect the absorbance to be higher or lower if the dilution of one of the solutions went under the calibration mark on the volumetric flask.

219. physics

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?

220. College Physics

A constant force of 2854 N acts on a spacecraft of mass 6100 kg that has an initial velocity of 32 m/s. How far has the spacecraft traveled when it reaches a velocity of 1170 m/s? I used: Vo=32 m/s, Vf=1170 m/s, F= 2854 N, and mass= 6100 kg I then solved

221. Life orientation

-what are the causes of and how to prevent cancer

222. psychology

The blind man and the elephant is a metaphor that shows how

223. high school

(x^2y^3/2z)^4

224. Medical teminology

Does anyone know a website where i cna search up the meaning of the prefix, suffix, and word root of the following terms: asymptomatic, benign, coagulate, convalescence, suture, therapy, plasma, and antidote?

225. English

I'm posting you the sentence again. I added a few other sentences. Thank you. 1)My child is outgoing, generous and likes teasing his classmates (I need an adjective: playful, annoying?). However, he is also stubborn, naughty and moody. Further, he gets

226. Lord of the Flies

I need an introduction sentence to start my essay.Something about how fear overwhelms a society

227. Social and Behavioural Sciences

I'm not sure how to define these words. 1) moral authorities 2) systematic empirical research 3) scientific research

228. English

calm/nervous, quick-tempered easygoing/touchy, think-skinned, crabby determined/indecisive easy-going/stand offish nosy(intrusive, prying, snoopy) / indifferent, uncaring, unconcerned, uninterested determined/undetermined OR indecisive

229. Science

Colchicine (F.W. 399.4), an alkaloid purified from the autumn crocus flower, blocks cell division by inhibiting mitosis. It is effective at concentrations of 0.1-1ug/ml. You have a cell culture with 40mls volume. How much colchicine do you add for a final

230. algebra

Here is my question. How do you solve th substitution method in this problem? 9x - y = 40 y = 4x

231. Physics

If a man donates blood one day and the next day he gets shot. Does he get it back?

232. French

Please help me unscramble the following words in french: penctoier uernigrsul aceir cuehaebrisnfa arlabtce botromen eercn nealum lstaa

Thank you

234. Math

A small credit has a small branch with two tellers. Arrival rate of customers to the branch is 12 customers per hour and the average service time is 6 minutes. Both inter-arrival time and service time follow exponential distribution (that is, the

235. mba

1. Antique Arts Company would pay Rs. 2.50 as dividend per share for the next year and is expected to grow indefinitely at 12%. What would be the equity value if the investor require 20% return?

236. Physics

Consider three force vectors ~ F1, ~ F2, and ~ F3 with magnitude 43 N and direction 53; mag- nitude 94 N and direction 162; and magni- tude 59 N and direction 288, respectively. All direction angles are measured from the posi- tive x axis:

237. Physics

Consider an inertial reference frame. In this coordinate system

238. Phyics - Astronomy

You are standing at a latitude of 35 degrees South. Star x is currently at an azimuth of 45 degrees and an altitude of 50 degrees. What is the azimuth and altitude coordinates of Star X 3 hours later? I don't know how to do this. If anyone knows how to

239. Physics Help

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4?

240. Government

The Principle of self-government emphasizes majority rule whereas the principle of liberty emphasizes individual rights. There principles A. are universal and are the foundation of all legitimate governments. B. have no real meaning in practice. C. have

241. algebra

what the interest rate for 80,000. Quota is 10.1% + 0.5 + \$300.

242. physics

The magnitude of A=(-4m)x+(-2m)y=

243. Calc

find F''(pi/3) f(x)= 4cos(x/2) i got -cos(pi/6) but i don't think that's the correct answer... Thanks!

244. Physics

Consider an inertial reference frame. In this coordinate system 1. nothing can accelerate. 2. there is no inertia. 3. objects with no forces acting on them have no acceleration. 4. inertial mass depends on your elevation.

245. Physics

Consider an inertial reference frame. In this coordinate system 1. nothing can accelerate. 2. there is no inertia. 3. objects with no forces acting on them have no acceleration. 4. inertial mass depends on your elevation.

246. algebra

25 divided 0.76 in long formed

247. psychology

give a thesis statement on how to have authority over adult children

248. me

why should food corporation of india be concerned about demand for the food grains to be release for public distribution system?

249. algebra

Find the length of each kind of shark. The white Shark is 18ft long. The oceanic whitetip shark is 2/3 the length of the tiger shark.

250. Algebra

F=9/5C+32 Solve for C if someone could explain in a step by step way that would be great!

251. Math

4.47 x 10^1 g How wouldI convert this to nanmograms? would I use 1mg / 10^-9 g? I do not understand how to do this

252. Physics

You have two forces, 106.8 N and 50.8 N. What is their resultant if the first acts upward and the second acts downward? What is the direction of the resultant? What is their resultant if they both act downward? What is the direction of this resultant?

253. algebra

I need to find the absolute value:; 1 |-2+5| 2 |5| +4 3 |-5| +4 4 |5+2| 5 |3 - 7| here are my answers: 1) 3 2) 9 3) 1 4) 7 5) 4

254. Math - Calculus

For the following arithmetic sequence: determine the common difference. Find the next three terms of the sequence. e) 2/3 , 1/15, -8/15 I really don't get how to solve this one, I see no pattern :\

255. Algebra

f(g(x)) =. Does this make sense or not? A) This makes sense because f(x) = x^2 and g(x) = x + 4 so putting in x^2 for x into g gives us x^2 + 4. B) This does not make sense because the input would first go into g, giving x + 4. Then x + 4 would be the

256. English

I forgot to add the following sentences. Thank you. 1) My child is outgoing,generous and liks teasing his classmates. However, he is also stubborn, naughty and moody. Further, he gets sulky when I scold him (kick him off?).

257. Logic

If I move to Texas, I will need air conditioning. I don't need air conditioning. So I didn't move to Texas" is an argument form known as (Points : 1) modus ponens. modus spumoni. modus operandi. modus tollens.

258. geometry

What is the area of the top of a box that is 14 by 19 cm?

259. English

Could you help me reword this please. Furthermore his exaggerated stories may be true for him but their illegitimacy to how a man in a suit can do such an uncivil thing such as ramming a car into a bus that may contain children or anyone in that case

260. comp

What is one important distinction you could not overlook when making a critical evaluation about the Boston Tea Party? Clarify the importance of that distiction.

261. Math

|y-5|-2=10 I know the first y=17 but I don't know the second ? Thanks

262. ALGEBRA PLS HELP

CAN YOU CHECK IF IM RIGHT? |-2 +5 | ANSWER 7 |5| +4 ANSWER: 9 |-5| +4 ANSWER : 9 |5+2| ANSWER : 7 |3-7| ANSWER : -4

263. Geometry

What is the area of a square with a base of 8mm?

264. physics

An airplane lands and starts down the runway at a southwest velocity of 48 m/s. What constant acceleration allows it to come to a stop in 1.5 km?

265. book reports

what suld i put on my book report

266. Math

In the equation ax^2+bx+c=0, one root is the square of the other. Without solving the equation, prove that c(a-b)^3=a(c-b)^3

267. Math

8 1/2 + 4 1/3 + 2 1/2 + 2 2/3

268. algebra

For 5 + (-8) = -3 how can i justify my answers in words, with a number line?

269. Exchange

What is the recipricol of 106.87, it is also the answer to if \$1 is worth 106.87 yen how much US currency is one yen worth?

270. physics

if a ball is thrown into the air at a speed of 22 m/s what is its position after 2.8 seconds?

271. MS. SUE HELP!

If 4.26 lb of chicken costs \$6.77, what would 3.75 lb cost? PLEASE HELP ME MS. SUE D: CAN U PLEASE EXPLAIN ME B4 GIVING ME THE ANSWER

272. English

Serious is to careful as nervous is to____________

273. Government Us

Compared to Supreme Court nominations, those for the lower federal courts a. are, although much greater in number, irrelevant to a president's policy agenda. b. are not subject to partisan consideration. c. have a much greater probability of being rejected

274. physics

if a ball is thrown down at an inital speed of 22 m/s, what will be its position after 2.8 seconds? acceleration is 9.8 m/s squared

275. french

What would I use before etait in this statement ?"Nous avons beaucoup aime notre sejour en France . ..... etait splendide."

276. algebra

y= x+2/3;(1,1/3)

277. Algebra

Whats -5 - 3=?

278. Algebra

How can i justify my answer in words with a number line the problem is -5 - 3 = -8 ?

279. English

In what situations would someone be reserved when introducing a person?

280. Social Media

How can we use customer comments to improve our coperate commerce in social media?

281. chemistry

How many milliliters of 1.4 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL

282. MATH - Calculus

Evaluate the following limit: e) lim f(x)-f(a)/ x - a x-> a if f(x) = x^2 + 5

283. ethics

Analyze the historical and philosophical relevance of ethical codes to contemporary practice

284. Math

Vanessa presented a report on Japanese tea rooms to her class. The floors are usually covered with square and rectangular tatami mats. She drew one way to cover square floor with a square half tatami mat qnd four rectangular full mats. The area if the half

285. ALGEBRIA 2

QUESTION IS: X X 4(x) +5 WHEN X = -2