Questions Asked onFebruary 19, 2012

1. Chemistry

Express the concentration of a 0.0510 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the desnity of the solution is 1.00 g/mL Since, we're assuming the density I think that also means were assuming the volume.. but

2. consumer math

1. Which of the following is an advantage of using credit cards? (Points : 1) Credit card accounts charge monthly interest. It is very easy to charge more than you can pay off each month. If you pay late, you will be charged a late fee. They are

asked by josh patterson
3. geometry

A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter how far above the ground is the top of the slide. Could someone please explain don't want just answer would like to know how to do the work.

4. Chemistry hw

Assuming 100% dissociation, calculate the freezing point and boiling point of 3.13 m SnCl4(aq). Tf=? Tb=? My work: SnCl4 with 100% dissociation gives a van't hoff factor of 5, 1Sn 4+ ion and 4 Cl- ions deltaT = i x Kf x m for freezing point = 5 x 0.51C/m x

5. chemistry

Assuming equal concentrations, rank these aqueous solutions by their freezing point.? K2CO3, Li3PO4, Sn(ClO3)4, NH4I I tried to rank them according to the number of ions but i can't get it. highest freezing point --> lowest freezing point Sn(ClO3)4 ->

6. calculus

At t=0 , a particle starts at the origin with a velocity of 6 feet per second and moves along the x-axis in such a way that at time t its acceleration is 12t^2 feet per second per second. Through how many feet does the particle move during the first 2

7. math

How can you use subtraction to complete an addition pattern? use this exercise as an example: 32, 39, 46, 53, 60, 67.

8. Chemistry

Given that the vapor pressure of water is 17.54 torr at 20 C, calculate the vapor-pressure lowering of aqueous solutions that are 2.40 m in (a) sucrose, C12H22O11, and (b) aluminum chloride. Assume 100% dissociation for electrolytes. Sucrose Delta P = __

9. physics

An airplane starts from rest at the end of a runway and accelerates at a constant rate. In the first second, the airplane travels 1.11 m. What is the speed of the airplane at the end of the second second?

10. Physics

A uniform meter rule of mass 100g balance at a 40cm mark when a mass x is placed at the 10cm mark.What is x?

11. Physics

1. While riding on an elevator descending with a constant speed of 1.5 m/s, you accidentally drop a book form under your arm. (a) How long does it take for the book to reach the elevator floor, 1.2 m below your arm? (b) What is your book's speed relative

12. Chemistry

A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas

13. Chemistry

An aqueous KNO3 solution is made using 72.5 grams of KNO3 diluted to a total solution volume of 2.00 liters. If the molarity of the solution is .359 M and the molality of the solution is .354, what is the mass percent of the solution?

14. HELP 6

Combinations of some type of designs or styles. A. Structures B. Patterns C. Numbers D. Conjectures B

15. Chemistry

A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C in torr? Values at 20C ethanol density: 0.789 g/mL & vapor pressure (torr): 43.9 torr water: denisty:

20. Geometry

1.) what is the length of the line segment whose endpoints are (1,1) and (3,-3)? 2.) what are the coordinates of the midpoint of the line segment whose endpoints are (c,0) and (0,d)?

21. Physics

A uniform meter rule of mass 100g balance at a 40cm mark when a mass x is placed at the 10cm mark.What is x?

22. Chemistry

A solution is made by dissolving 0.500 mol of HF in enough water to make 1.00 L of solution. At 21 C, the osmotic pressure of the solution is 1.35 atm. What is the percent ionization of this acid? This is what i did.. is it correct? (1.35 atm) =

23. MATH

A regular triangular pyramid has an altitude of 9m and a volume of 46.8cu. meters. Find the length of the edges and the lateral area of the pyramid.

24. pre-cal

Some biologists model the number of species S in a fixed area A (such as an island) by the species-area relationship log S = log c + k log A where c and k are positive constants that depend on the type of species and habitat. (a) Solve the equation for S.

25. physics

a 2kg block of wood rests on a long table top. a 5 gram bullet moving horizontally with speed of 150m/s is shoot into the block and stricks in it then block slides 270cm along the table and stops. find a)speed of block after impact b)friction force between

26. physics

Five styrofoam balls are suspended from insulating threads.Several experiments are performed on the balls and the followingobservations are made: I. Ball A attracts B and repels C II. Ball D attracts B and has no effect on E III. A negatively charged rod

31. physcis

reviews the concepts that are important in this problem. A golfer imparts a speed of 35.9 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the

The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees celsius. How many grams of aspirin C9H8O4, a non volatile nonelectrolyte (mw=180.1g/mol), must be added to 216.7g of ether to reduce the vapor pressure to 453.74 mm Hg. Ether=74.12g/mol so I

33. Chemistry

What is the equilibrium partial pressure of water vapor above a mixture of 37.5 g H2O and 62.5 g HOCH2CH2OH at 55 degree C. The partial pressure of water at 55 degree C is 118.0 mm Hg. Assume ideal behavior for the solution.

34. geometry

if JKLM is a rectangle if jl = 4x - 12 and MK = x what is the value of x? what is the length of the diagonal?

35. physics

A man with a mass of 62 kg stands up in a 64-kg canoe of length 4.0 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and the water. How

36. chemistry

The mass of a single uranium atom is 4.70E-22 grams. How many uranium atoms would there be in 339 milligrams of uranium?

37. Physics

A computer is reading data from a rotating CD-ROM. At a point that is 0.0368 m from the center of the disk, the centripetal acceleration is 274 m/s2. What is the centripetal acceleration at a point that is 0.0781 m from the center of the disc?

38. Math

solutions to the problem what four-digit whole number satisfies the following conditons? The sum of the digits is 6; the number is less than 1200; none of the four digits are equal; and the tens digit is an odd number.

39. Geometry

Please help. The scale factor of ^RST to ^DEC is 3:13. What is the scale factor of ^DEC to ^RST?

40. HELP 5

Acceptance, Perception and Conclusion A. Customs B. Beliefs C. Traditions D. Rituals B

41. Chemistry

Bauxite ore contains aluminum oxide Al2O3(s) which is decomposed using electricity to produce aluminum metal and oxygen gas. What mass of aluminum metal can be procuced from 155g of aluminum oxide?

42. y no one anwering my ques

How does active transport differ from passive transport? 1. Molecules move down a concentration gradient in active transport. 2. Carrier proteins are used only in active transport. 3. Energy is required only in active transport. 4. Energy is required only

43. pre calc

A rock is dropped form the top of a cliff. It takes 12 seconds to hit the ground. What is the height in feet of the cliff?? How fast is the rock moving when it hits the ground?

44. chem hw

Assuming equal concentrations, rank these aqueous solutions by their freezing point: Li2SO4, Li3PO4, SnCl4, NH4Br. (from highest freezing point to lowest freezing poinT) Is the order Li3PO4, Li2SO4, SnCl4, and NH4Br???????? If not what is the correct

45. math

determine the linear velocity of a point rotating at 15 revolutions per minute at a distance of 3.04 meters from the center of a rotating object

46. world history

Which statement applies to BOTH the maurya and the Gupta empires? A.Both empires united diverse peoples within their empires. B.Both empires fought bitterly against Buddhism. C.Both empires had a loose goverment structure that gave power to individual

47. Half-Life

Uranium-238 decays to Lead-206. The half life of Uranium-238 is 4.5 billion years. If you have a 100 g sample. How much sample will you have after 2 half lifes?

48. College Physics

Answer the following questions for a mass that is hanging on a spring and oscillating up and down with simple harmonic motion. Note: the oscillation is small enough that the spring stays stretched beyond its rest length the entire time. Options for each

49. finite

Assume that the coin is flipped 10 times. What is the probability that both heads and tails occur?

The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether , CH3CH2OCH2CH3, is 463.57 mm Hg at 25oC. In a laboratory experiment, students synthesized a new compound and found

51. 5

The remaining amount after deductions in salary. A. Gross B. Net C. Fiscal D. Tariff

52. HELP 13

Practices by a certain group of people A. Customs B. Beliefs C. Traditions D. Norms C

53. science

The "proof" of an alcoholic beverage is twice the volume percent of ethyl alcohol, C2H5OH in water. The density of ethyl alcohol is 0.789g/ml and that of water is 1.00g/ml. A bottle of 100 proof rum is left outside on a cold winter day. a.) Will the rum

54. Chemistry

A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas

55. Algebra

Assume it costs Microsoft $4,300 to manufacture 7 Xbox 360s and$8,290 to manufacture 14. Obtain the corresponding linear cost function. C(x)= (what formula do I use to get the cost function, because I can't get it) What was the cost to manufacture each

56. physics

a 15gram bullet moving at 300m/s pass through z 2 cm thick sheet of foam and emerges with a speed of 90m/s find average force impeded its motion through the plastic.

57. physics

A 2490 kg demolition ball swings at the end of a 35.9 m cable on the arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 7.26 m/s. Determine the tension in the cable.

58. help 8

The ability for a business to pay all that is owed. A. Technology B. Strategies C. Obsolesce D. Solvency D

59. Algebra

The RideEm Bicycles factory can produce 140 bicycles in a day at a total cost of $10,200 and it can produce 160 bicycles in a day at a total cost of$10,900. What are the company's daily fixed costs? What is the marginal cost per bicycle?(How do I find

60. Physics

How much power does a water pump exert lifting 30 kg of water at a constant velocity 20 m each second

61. Physics

A vibration platform oscillates up and down with an amplitude of 10.2 cm at a controlled variable frequency. Suppose a small rock of unknown mass is placed on the platform. At what frequency will the rock just begin to leave the surface so that it starts

62. Chemistry

The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees celsius. How many grams of aspirin C9H8O4, a non volatile nonelectrolyte (mw=180.1g/mol), must be added to 216.7g of ether to reduce the vapor pressure to 453.74 mm Hg. Ether=74.12g/mol This

The remaining amount after deductions in salary. A. Gross B. Net C. Fiscal D. Tariff I GOT GROSS

64. Physics

A body of mass 5kg falls from a height of 10m above the ground.what is the kinetic energy of the body just before it hits the ground.[g=10ms-2

65. Math

A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

66. Chemistry

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are

67. Math

Assume it costs Microsoft $4,300 to manufacture 7 Xbox 360s and$8,290 to manufacture 14. Obtain the corresponding linear cost function. C(x)= (what formula do I use to get the cost function, because I can't get it) What was the cost to manufacture each

68. Algebra

Find a linear equation whose graph is the straight line with the given property. HINT [See Example 2.] Through (2, −3) and (1, 1) Which formula do I use? y2-y1/x2-x1 or y-y1=m(x-x1)[

69. Math, URGENT!

What is the decimal equivalent of 1,932% and how do you get the answer to the decimal equivalent?

70. Economics

Grocery stores and gasoline stations in a large city would appear to be examples of competitive markets: There are numerous relatively small sellers, each seller is a price taker, and the products are quite similar. a. How could we argue that these markets

71. eng 22

Which of the following leads to the deepest appreciation of a film? Turning off your brain completely and letting life’s pressures slip away Paying attention to what a film is trying to say Learning the technical names of a film’s elements Learning the

72. physcis

After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 35.5 m horizontally from the end of the ramp. His velocity, just before landing, is 18.5 m/s and points in a direction 43.2 ° below the horizontal. Neglecting

73. Statistics

What is the 10th percentile, n of group of people's pulse rates, where X = pulse rates of group of people, for which the mean is 73 and the standard deviation is 8? Assume a normal distribution. (Round your answer to the nearest whole number.) n = .

74. physcis

A 2520 kg demolition ball swings at the end of a 23.9 m cable on the arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 8.97 m/s. Determine the tension in the cable.

75. Chemistry

2C10H22 + 31O2 = 20Co2 + 22H2O What kind of reaction is this?

76. HELP 12

The money being made in a company. A. Obsolesce B. Solvency C. Revenue D. Debt C

77. Math

The sides of parallelogram 2x+y,3y-2x,5y-8,4x-3 are given in cm.find x and y and the perimeter of the parallelogram

78. principles of physics

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.

79. math

solve the equation,(112 - 38) x 14 divided by 7 + 142

80. HELP 15

A result from being multiplied A. Product B. Quotient C. Multiplier D. Expression I THINK ITS B R C

81. help 1

This number represents the equal number of parts that equal a whole in a fraction. A. Numerator B. Denominator C. Variable D. Expression i got b

82. Chemistry

What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivity?

83. HELP11

A line horizontally drawn from the center of the circle. A. Radius B. Axiom C. Circumference D. Vertex A

84. physics

Two trains are heading toward each other on the same track with velocities v1 and v2 respectively. The drivers,noticing this when the trains are at distance x apart, apply brakes, giving same acceleration y to each train. The necessary condition for

85. physics

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2

86. English

Identify the participial phrase in the sentence below. Rising early, I saw the sun come up. A.Rising early B. saw the sun C. come up D. in the distance Thanks for the help :)

Acceptance, Perception and Conclusion A. Customs B. Beliefs C. Traditions D. Rituals i got d

88. Chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse

89. pop

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.

90. geometry

Please Help. MNOP~Qrst with a scale factor of 5:4. MP=85mm. What is the value of QT?

91. Chemistry

1. Nitric oxide reacts with bromine gas at elevated temperatures according to the equation, 2 NO(g) + Br2(g) = 2 NOBr(g) The experimental rate law is rate = k[NO][Br2]. In a certain reaction mixture the rate of formation of NOBr(g) was found to be 4.50 x

92. chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse

93. Physics

Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive

94. CHEMISTRY

Predict the products of the following reactions. a)CH3-CH2-CH2-CH3+O2----> B)CH3-CH2-CH2-CH2-CH3+Br2----> c)CH3-CH=CH-CH3+Br3----> D) HEXENE+KMnO4--> E) HEXENE+Br2---->

95. Physics

You push a 2.5 kg block against a horizontal spring, compressing the spring by 16 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 60 cm from where you released it. The spring constant is 200 N/m. What is the

The initial concentration of a reactant in a first order reaction is 0.620 molar. What will be its concentration after 3 half-lives? I did 0.620 -> 0.31 ->0.155 0.155M will be the concentration. Is this correct?

97. CHEM

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse

A midpoint of sequence of numbers. A. Mean B. Median C. Mode D. Zero I GOT B

99. HELP12

A group that has exclusive business rights and titles. A. Company B. Corporation C. Investment D. Proprietorship D

100. math

The number of dogs and chickens on a farm add up to 14. The number of legs between them is 36. How many dogs and how many chickens are on the farm if there are at least twice as many chickens as dogs

101. World History

Which statement BEST explains why Hunduism is one of the world's most complex repligions? A.Hinduism is very similar to Buddhism and Christianity. B.Hinduism is no longer practiced in presents-day India. C.Hinduism grew out of the overlapping beliefs of

102. math

1. Find the expense at 60 cents a square foot of polishing the curved surface of a marble column in the shape of the frustum of a right circular cone whose slant height is 12 ft. and the radii of whose bases are 3ft 6in and 2ft 4in respectively.

103. chemistry

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse

104. physics

A 67.7 kg person jumps from rest off a 3.11 m-high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 1.04 m under the surface of the water. Determine the magnitude of the average force that the water exerts on

105. physics

An unclothed student is in 24 ◦ C room. If the skin temperature of the student is 37 ◦ C, how much heat is lost from his body in 6 min, assuming that the emissivity of the skin is 0.83 and the surface area of the student is 1.5 m2 . The

106. physics 213

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 44.7 km/s and 56.2 km/s. The slower planet's orbital period is 8.61 years. (a) What is the mass of the

107. Math

A rectangular parcel of land is 70 ft longer than it is wide. Each diagonal between opposite corners is 130 ft. What are the dimensions of the parcel?

108. physics

A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period?, What is the power of the elevator motor during an

109. physics

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2

110. HELP 9

The shares of a company A. Stocks B. Bonds C. Executive D. Assistant I GOT A

111. physics

A car (m = 1540 kg) is parked on a road that rises 18.9 ° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?

112. chemistry hw

SOMEONE PLEASE HELP AND CONFIRM THE RIGHT ANSWER FOR ME...I HAVE ONE MORE ATTEMPT TO THIS PROBLEM AND I NEED HELP!!!!! PLEASE!!!!!!!!!!!!!!!!!!!! THANKS! In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution

113. statistics

Suppose that the weights of airline passenger bags are normally distributed with a mean of 48.08 pounds and a standard deviation of 3.13 pounds. A)Let X represent the weight of a randomly selected bag. For what value of c is P(E(X) - c < X < E(X) +

114. pop

A fast-moving massive car has a head-on collision with a slow-moving light car. Upon which is the impulse greater? A) The massive car. B) The light car. C) Impulse is the same on both. D) More information is needed to correctly answer this.

115. HELP 16

Equal Rights A. Equality B. Minority Rights C. Standards D. Sovereignty B

State Dalton’s Postulates? In light of modern knowledge, what are the inaccuracies in Dalton’s Postulates? I know Dalton's postulates: -All matter consists of tiny, indivisible particles called atoms that cannot be created or destroyed -Atoms of one

117. History

(So, I have to agree or disagree with regards to the statement provided.. please comment on how I can make my answer better) Confirming Max Weber’s thoughts on the dynamics between religion, economics, and culture--Protestantism and urbanization had a

118. math

the volume of an equilateral triangular frustum is 183 square root of 3 cubic inches. The upper base, 9in above the lower base, has an edge which measures 8in. Compute for the edge of the lower base.

119. Chemistry

What is the molar concentration (M= molarity) of a solution prepared by dissolving 50 g of NaCl in 750ml of water?

120. statistics

An investment broker reports that the yearly returns on common stocks are approximately normally distributed with a mean return of 12.4 percent and a standard deviation of 20.6 percent. On the other hand, the firm reports that the yearly returns on

A holder in an investment. A. Stakeholder B. Accountant C. Executive D. Assistant A

122. HELP 14

Money owed A. Assets B. Audit C. Liabilities D. Capital C

123. Geometry

Please Help. You make a scale draing of a garden plot using the scale 2in.= 17ft. If the length of a row of vegetables on the drawing is 3 in.,how long is he actual row?

124. calculus

find lim x->0 3- sqrt x+9/-x

125. physics

A 40.0 kg crate is initially moving with a velocity that has magnitude 4.09 m/s in a direction 37.0 ^\circ west of north. How much work must be done on the crate to change its velocity to 5.49 m/s in a direction 63.0 ^\circ south of east?

126. physics

A basketball player makes a jump shot. The 0.585 kg ball is released at a height of 2.14 m above the floor with a speed of 7.15 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.19 m/s. What is the work done on the ball by air

127. Geometry

1.) what is the length of the line segment whose endpoints are (1,1) and (3,-3)? 2.) what are the coordinates of the midpoint of the line segment whose endpoints are (c,0) and (0,d)? 3.) The diagonals of a rhombus have lengths of 8 cm and 6 cm. The

128. chemistry

I^- H5IO6 BrO2 HClO I2 Which could not disproportionate?

129. pop

If superman in space throws a boulder with 10 times as much mass as himself, and the boulder leaves his hands at 100 m/s, how fast does superman recoil? A) 1000 m/s. B) The same speed, 100 m/s. C) 10 m/s. D) None of these are correct.

130. physics

A ball is thrown upward at a speed v0 at an angle of 52.0˚ above the horizontal. It reaches a maximum height of 7.3 m. How high would this ball go if it were thrown straight upward at speed v0?

131. physics

A car accelerates at a constant rate from zero to 20.5 m/s in 10 seconds and then slows to 15.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?

132. chemistry

Calculate the number of molecules of NBr3 in 25.0 g NBr3. Use a molar mass with at least as many significant figures as the data given.

133. bio

How does active transport differ from passive transport? 1. Molecules move down a concentration gradient in active transport. 2. Carrier proteins are used only in active transport. 3. Energy is required only in active trans- port. 4. Energy is required

134. HELP 7

Converting Terminology via computers. A. Cryptography B. Technology C. Geometry D. Geology B

135. Chem 100 Lab

A black solid is heated in a tube that is completely evacuated of air. Hydrogen is added to the tube. An orange powder is formed and water vapor is seen on the outside of the tube. Is the original solid an element or compound? Can you identify the

136. Qauntitative Analysis for Mgmt

Your company uses 1,500 per year of a certain subassembly that has an annual holding cost of $45 per unit. Each order placed costs$150. The company operates 300 days per year and has found that an order must be placed with the supplier 6 working days

137. Math

Can you help me set up this problem please P(t) = 100/1+48.2e^-0.52t If the company's claim is true, how many months will it take to have mastered 80% of the program. I just need help setting it up Thanks!

138. math

determine the angular velocity if 11.3 revolutions are completed in 3.9 seconds

139. science(chemistry)

complete the following reaction: 1.CH3-CH-_CH2+H2O 2.CH2-CH2+Br2

140. help 2

A decrease in purchasing power A. Debt B. Gains C. Depreciation D. Gains i got a

141. Calculus (Math 2A)

Gravel is being dumped from a conveyor belt at a rate of 20 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 19

asked by What is wrong with it?
142. Physics

A truck of mass 7520 kg is traveling along a level road at an initial speed of 32.9 m/s and then slows to a final speed of 17.9 m/s. Find the total work done on the truck.

143. macroeconomics

if retiree benefits were frozen what would happen to total expenditures

144. algebra

Natasha has been saving money to buy a new pair of running shoes. The pair she wants cost $132. She currently has$80. She saw an ad in the paper that the store is having a "1/3 off sale" Does she now have enough money to buy the shoes? if not how much

145. algebra

Tanslate this sentence into an equation. " 48 is 4/9 of Malik's height"

146. Calc

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

147. pop

4. If your speeding car slams into a haystack and comes to rest, how will the IMPULSE that acts on it compare with slamming into a brick wall and coming to rest? A) The impulse will be more. B) The amount of impulse will be the same either way. C) The

148. pop

If a fast-moving object strikes you, you'll experience less force of impact if you can ____________________. A) increase the time the momentum decreases. B) shorten the time the momentum decreases. C) either shorten or increase the time, for the result is

149. chemistryyyy

A solution is made by dissolving 0.0100 mol of HF in enough water to make 1.00 L of solution. At 23 °C, the osmotic pressure of the solution is 0.308 atm. What is the percent ionization of this acid? Please help.

150. Physics

During a certain thermodynamic process a sample of gas expands and cools, reducing its internal energy by 3690 J, while no heat is added or taken away. How much work is done during this process?

151. 7

Acceptance, Perception and Conclusion A. Customs B. Beliefs C. Traditions D. Rituals i got b

152. College Math

Only 43% ofthe carbon-14 in an artifact remains. How old is the artifact? Would the answer be less than the half life?

153. algebra

Need help solving for x: 500,000/x = 30%/70%

154. physics

a hot air balloon is hovering at an altitude of 6000 meters. The pilot decides that it is time to descend and turns off the balloon's burners.Once the balloon reaches the ground, the gas inside the balloon occupies 980 m cubed and is at atmospheric

155. physics

What is the mass of a person who weighs 750N?

The units of a rate constant for zero, first, and second order reactions are given in the textbook. If the time units are minutes, what would you expect the units to be for a third order reaction? 1) 1/min^3 2) mol^2/L^2-min 3) L/mol-min^2 4) L^2/mol^2-min

157. College Math

Natasha drove from Bedingsfield to Portsmouth at an average speed of 100 km/h to attend a job interview. On the way back she decided to slow down to enjoy the scenery, so she drove at just 75 km.h, Her trip involved a total of 3.5 hours of driving time.

158. Chemistry

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are

196. physics

How far from the center of the earth must a person be to experience acceleration due to gravity that is one half the acceleration at the surface?

197. physics

HOw many cubic meter of water will an air tight rectangle box with a mass of 8000 kg and dimensions of 10m long 5m wide 3m tall displace when dropped in water? will it float?

The angle is less than 180 degrees, but more than 90 degrees. A. Obtuse angle B. Right Angle C. Acute Angle D. Triangle A

199. Science

The cirucumference of a ballon is 75 inches and the diameter is 12 inches what is the volume? Science - Ms. Sue, Saturday, February 18, 2012 at 9:54pm Thank you. volume = 4/3 ð r3 V = (4/3) * 3.14 * 6^3 V = (4/3) * 3.14 * 216 V = (4/3) * 678.24 V = ? I am

Solve the following problem using a method of your choice. A store clerk who is taking inventory in a toy store of bicycles and tricycles in a certain way. He commented that there are 50 wheels and 40 pedals. How many bicycles and how many tricycles did he

asked by Brittany M.
201. chemistry

If hydrated sodium carbonate contains 6.0 g of carbon, find its mass.

202. Chemistry

I had to perform an experiment for the freezing point depression in which we had to determine the freezing points of water as a pure solvent, sodium chloride, sucrose, and ethylene glycol. We had to work with a partner so I completed the experiment for

203. Accounting

Give an example where product and period costs are the same and a separate example where they are different.

204. Careers

What Grade 12 courses would I need to take in order to be an accountant? Are there any other requirements?

205. algebra

what number is equivalent to this expression,(4 x 9 - 13) - 15 divided by 5 x 2 - 1??? can someone help me with this.

206. Physics

A jet flying at 120 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 2.19 × 105 kg. Calculate the magnitude of the necessary lifting force. L =____ N

207. calculus

f(x)=e^x-x (a) at what x-values does f have relative extrema? (b) find the exact value of -1 to 1 on an interval f(x)dx. (c) show that f does not have any inflection points.

208. math

The ratio of the volume to the lateral area of a right circular cone is 2:1. If the altitude is 15cm, what is the ratio of the slant height to the radius?

209. Math

How do you express 234^789 in scientific notation? Its to big to computer for my graphing calculator Thank You

asked by Sam I Am
210. physcis

Boat A negotiates a curve whose radius is 375 m. Boat B negotiates a curve whose radius is 150 m. Each boat experiences the same centripetal acceleration. What is the ratio of the speed of boat A to that of boat B?

211. Psychology

The emotional risk factor that poses a significant danger to one's physical health is proneness to: a. Antagonistic anger b. depression c. loneliness and worry d. anxiety and helplessness I chose B.

212. Chemistry

How many particles are in .169 moles of Potassium Sulfide?! What is the percent composition of sulfer in that same prolem?!

213. ETH/125

My format has to be according to APA standards Are Cubans Colonized or immigrated to the US? Did Cubans facce prejudice, sergration, racism, or any combination of gthe three? If so how and why. ( I have to include research in my findings for my essay)

214. math/117

Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people

215. calculus

integral from 0 to pi of 9+6cos((pi/25)y)+cos^2((pi/25)y)

216. Calculus

Which of the following is a point at which the tangent to y=(x-2)^2(x+3) is horizontal? a) (-2,16) b) (-1, 18) c) (1,4) d) (2,0) I found the derivative of y=(x-2)^2(x+3) which is 3x^2-2x-8 if I solved for 0, it wouldn't give me the answer that are listed

To assume all are the same and to categorize A. Ethnocentrism B. Prejudice C. Stereotype D. Racism i got b

218. math

An edge of a cube is increased by 10%. Find the percent by which the surface area o fa cube has increased?

219. algebra

Find the distance between the two points (6.5, 1.0) and (-8.6, -5.2). Give your answer rounded to two decimal places

220. Chemistry

How many moles are in 12.0 grams of Potassium Sulfide?

221. algebra

The solution to this i believe is no solution need help. -2x+2>-2x-3

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are

223. math

1.) Find the solution set of 2sin squared θ-1= 0 if 180 degrees is less than or equal to θ is less than or equal to 360 degrees 2.) prove: 2cotθ/cot squared θ -1 = sin2 θ sec2 θ

224. chemistry

Sketch one face of a simple cubic unit cell of side a for the case when the maximum fraction of the lattice in volume is filled with atoms, and each atom is approximated by a hard sphere. (ii) What is the radius of each atom in terms of a? (iii) What is

225. English

Thank you very much for helping me, Writeacher! I have a question. As in chapter 11 chapter refers to his last year (fifth year in England) shall I use the past in the rephrase, when he recalls the time he spent with the horses? Here is the third part of

226. physics

A vertical spring with a spring constant of 1.89 N/m has a 0.307-kg mass attached to it, and the mass moves in a medium with a damping constant of 0.0221 kg/s. The mass is released from rest at a position 4.81 cm from the equilibrium position. How long

227. help asap

Basing the Results on Probability A. Calculation B. Abstraction C. Classification D. Relation a

228. principles of physics

7. If superman in space throws a boulder with 10 times as much mass as himself, and the boulder leaves his hands at 100 m/s, how fast does superman recoil? A) 1000 m/s. B) The same speed, 100 m/s. C) 10 m/s. D) None of these are correct.

229. Physics

A man uses 170N of force to lift a box with a mass 4.9 kg over his head at a constant velocity. If he is 1.9m tall then what is the net work done on the box?

asked by Net Work
230. principles of physics

A truck moves with a certain momentum. If both its speed and its mass are doubled, how much greater is its momentum? A) Two times. B) Four times. C) Eight times. D) Unchanged, the same.

231. American history

"All powers not delegated to the United States by the Constitution . . . are reserved to the States respectively, or to the people." This language, drafted by _______ and incorporated into the _______ Amendment of the Bill of Rights was intended to address

232. argumentitive essay

the authorites in your country are considering the introduction of sunday racing in order to boost the industry room a finical sperspective. write an argumentitive essay to support or oppose this view.

asked by dianne henry
233. bio

How does the surface area-to-volume ratio of a 1-mm cube compare to the surface area-to- volume ratio of a 3-mm cube? 1. The ratio does not change. 2. The ratio increases as the cube becomes larger. 3. Increasing the volume increases the ra- tio. 4. The 3

234. Math

Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) 17x3 − x + 3 = x3 + 24x2 + x

235. English

I'm including the last part of the rephrase. I hope you can read it because I had problems with my previous post. By the way, they and them in my previous post referred to the horses. 1) When Gulliver comes back home in England, his wife and his other

236. physics

An electron at rest is found to have a force of 0.40 N to the left. What is the electric field (magnitude and direction) at the location of the electron?

237. chemistry

if i have two salts KCl and NaCl can I say that KCl conducts more electricity because it has an cation with lower ionization energy

238. Math

Need help understanding half-life/decay problem for upcoming test. A water filter is constructed to form a foam that removes 25% of the particulate impurities for each inch of foam. 1.What percentage of the particulate impurities will be removed by a

239. Calculus (Math 2A)

Use implicit differentiation to find the slope of the tangent line to the curve y/(x-2y) = y^3 +9 (1,10/21) ive done this problem around 10 times and i still cant get it.... when i did it the last time i got -9-y^3/ 3y^2 x - 8y^3 - 19 and the slope around

240. Social studies

Name the tenants of a democratic society, or describe the belief system of democratic societies

241. Englisg

I'm finding extremely difficult to rephrase this letter taken from Richardson's Pamela. I really need your help. 1) In letter XV of Richardson’s Pamela, Pamela recounts to her mother what happened to her as she was concluding her previous letter. 2) Mr.

242. math

solve 3.7^4*x = 9271

243. algebra

Snowfall Suppose 5 inches of snow fall before noon and 2 inches per hour fall thereafter until 10 P.M. (a) Write a formula that calculates the snowfall S in inches, x hours past noon. (b) Use your formula to calculate the total snowfall at 8 P.M. (c) How

244. POP

Which has more momentum, a speeding baseball or an ocean liner at rest in a harbor? A) Baseball. B) Ocean liner. C) Both the same. D) Can't say without more information.

245. Chemistry

How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

246. Chemistry

How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

247. science

on what website can i find info on things made of the element hafnium:a picture,how it's made, and why it is made with hafnium.

248. psychology

What are some movies that is related to the issues of child development and developmental psychology

249. pre-cal

Find the solution of the exponential equation, correct to four decimal places. 4^(2x − 1) = 6

250. physics

a hydraulic jack is used to move an 8896 newton car. if the area of the output piston is 8 times that of the input piston, how much input force is required to lift the car. i did Pi * 8 them multiplied that answer * 8896 then divided that answer times

251. Algebra

Factor 12x^2(x-1)-4x(x-1)-5(x-1) and show work.

252. principles of physics

A fast-moving massive car has a head-on collision with a slow-moving light car. Upon which is the impulse greater? A) The massive car. B) The light car. C) Impulse is the same on both. D) More information is needed to correctly answer this.

253. trig

y= sin x/2, 0 less than equal to x less than equal to 4pi... the question says state the amplitude and period for each equation and graph it over the indicated interval

254. English

for slideshow presentation i want to add another theme caption for story. i not really know how to say it though like follow your heart to positive direction. like i want to take something positive from orpheus story and teach lesson to jake.

255. parallell and perpendicular lines

please check my homework given P(7,2) and the line y + 3x=7 find the equation for the line parallel line: y+3x+7 y=-3(x-7) +7 y-2=-3x+21+7 y=-3x+28+2 y=-3x+30 perpendicular line: y-2=1/3(x-7) +7 y-2=1/3x-7/3 +21/3 y-2==1/3x + 14 y=1/3x + 14 +2 y=1/3x +16

256. writing

I want to know what is wrong in the following sentence: After six months on the job, he faced problems in his first recruitment effort; however, if he solves these problems, the new hires should be able to start working by July.

257. Physics

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

258. Math

if f is an exponential function, and f(5)=20 and f(9) = 14, use the add-multiply property to calculate f(13),f(17), and f(21). Show your method

259. chem

I think I figured out the answer for the net ionic, I wanted to know if this is right? and What is the superscript for it? Co+ (aq) + 2 OH- (aq) = Co(OH)2 (s)

260. MATH

knowledge : point (-3,-4)is on the terminal arm of an angel (alpha) in stander position.verify that (sin alpha)2 + (cos alpha )2 =1

261. Calculas

Find any critical numbers of the function. (Enter your answers as a comma-separated list.) g(t) = t sqrt6 − t , t < 13/3 I don't even know how to start out!

262. chemistry

Do NPK fertilizers contain all three elements (nitrogen, phosphorus and potassium) in them or just 1 of the three elements?

263. Chemistry

What is the % by volume of an alcohol solution prepared from 35 ml alcohol and 350 ml of water?

264. math

a data set of size 19 has correlation coefficient of r= 0.432. Test the significance of r at the 5% level and at the 1% level

265. POP

2. A truck moves with a certain momentum. If both its speed and its mass are doubled, how much greater is its momentum? A) Two times. B) Four times. C) Eight times. D) Unchanged, the same.

266. cal 2

find the derivative ln [x^3 +((x+3)^3)((x^2)+4)^7

267. English

There were problems with my last post last night. I was ill and I didn't manage to include they things on Gulliver's travels I wanted you to check. Here is the first part of the rephrase. I've tried to rephrase the beginning of Chapter 11. 1)At the

268. cjs

The current threat of terrorism has made many legislatures in Congress think about the United States combining all the police agencies into one national police organization. The centralization of power would stop the discombobulated nature of the 3

269. math

if z(t) = 60 * 1.03^t, find t when z(t) =144

270. English

Hello. I will really appreciate your help. 1) Is it possible to use "unknown" in the following context: "It is still unknown what effect the accident will have on the world."? 2)Is it possible to use "include" in the sentence: "The organization includes 62

271. Physics

What is the truth value of the sentence "Pv~P" A. True B. False C. Cannot be determined D. Not a sentence

272. math

Suppose that $200 was deposited on 1st Jan 2000 into an account that earned 5% interest compounded semiannually. Suppose further that$200 was deposited on 1st Jan 2001 into a different account that earned 6% interest compounded semiannually. In what month

273. Math

I am trying to figure out how to find the answer for r in a fraction. I have about 20 problesms and just need help getting started. The first problem is r/4+2=5.5

274. maths

prove that (n-1) squared + n + (n+1)squared = 3n +2

275. English

Here is the rephrase I hope you can check. Thank you very much in advance. 1) Mr. B refers briefly to the incident in the summer house. He excuses himself by saying that on that occasion he didn’t want to do her any harm but be a little kind to her. 2)

276. math

Transform the following. Do not evaluate. log (3*4) log 3^4

277. phoenix

What type of negative experiences, if any, have you had from social media?

278. phoenix

What type of negative experiences, if any, have you had from social media?

279. arithmetic

What makes the mode decrease In math?

1) The reaction A + B + C = products has a rate law rate = k times A times C squared. Which of the following will result in an increase in the rate constant for the reaction? #1 - increasing the temperature #2 - adding a catalyst #3 - doubling the

281. math

what is the role of the null hypothesis

282. english - Ms. Sue

Ms. Sue I worked on my thesis and and my outline, can you please tell me what you think? I appreciate it so much! I’d like to define the traditional family and compare it to a modern television show and argue that even though the traditional family holds

283. Algebra 2

Solve each equation below for x. (Use logarithms.) 10^(2x^(2)-5x+11) = 10000 9^(2(x-1)) = √(27)

284. Grammar

what is the difference between the Direct Object and the Indirect Object?

285. Last Chemistry Question!

How do you Convert from Moles to Liters? Man i hate not understanding test prep material!

286. Math

55/3 as fractions

How would I find the molality of NaCl with the following information? initial temperature= 98degrees celsius final temp=100 degrees celsius. Kbp(water)=0.512

288. Math

if h(t) = 17.4 * 1.23^t, find t when z(t) = 144

289. writing

I'm Writing a Discursive Essay on the topic "is it more difficult to be a young person today then it was 50years ago", I have these main points: "we have technology but its brought us media pressue" "Better education system but with more pressue to succed"

290. science

i need this answered for me haha^^ i have no clue.. ''a solute was mixed with a solvent, some of the solute fell to the bottom of the test tube, what happend?'' plzzzz answerrr xD

291. PHI103

1. A radical skeptic might be willing to doubt which of the following? (Points : 1) 3 + 5 = 8 Grass is green. Cheese is fattening. All of the above

292. Writing

I'm Writing a Discursive Essay on the topic "is it more difficult to be a young person today then it was 50years ago", I have these main points: "we have technology but its brought us media pressue" "Better education system but with more pressue to succed"

293. ENG103

Hello you guys did such a great job helping me with my essays in ENG100 but it has been so long, I am now in ENG103 and I need help with an argument definitional essay. I typed my intro, it needs work, I just need help with my thesis/argument. General

294. arithmetic

6(x-6)+2=8(x+2)-8

295. Quantitative Analysis for Mgmt

Computer sales over the past 4 months have been 35, 34, 38, and 44 units. „L Using a 3-month moving average, forecast sales for the next month. (35+34+38)/3 = 35.67 (34+ 38+44)3 = 38.67 „L Using a 3-month weighted moving average with the weights 3, 2,

296. engineering

Sketch one face of a simple cubic unit cell of side a for the case when the maximum fraction of the lattice in volume is filled with atoms, and each atom is approximated by a hard sphere. (ii) What is the radius of each atom in terms of a? (iii) What is

297. English

Here is the second part of my rephrase. Hopefully I can send it to you, Writeacher! Thank you. 1) Then he likens both his family and friends to the horses for their shape and disposition (?). Though more civilized and endowed with the gift of speech, they

298. Information literacy

Which of the following related subjects is listed as a broader term

299. maths

prove that 2 2 2 2 (n-1) + n + (n+1) = 3n +2

300. algebra

what number is the simplified expression equal to, 13 - 7 + (2 x 5 - 1) divided by 3 + 7. can someone help me with this???

301. Math

if g(x) varies exponentially with x, and g(0) =37 and g(7) =5940 find the particular equation...

302. math

what is the simplified portion of the grouping??? 5 + 4 -(100 - 8 x 3)x 4.

303. world history

who ruled over babylons last era greatness

304. math

convert each point,P(x,y)to the ordered pair P(r cos theta ,r sin theta).round all valuas of r to one dicimal place and all values of theta to the nearste degree. (a) (4,6) (b) (-3.7) (c) (10,-23)

305. math Statistics

Hi I need help with Statistics. Can anyone help me to understand it better? I am in fear that if I do not figure this out soon I will fail my class. I am needing help with the chapters 12,and 13. in the book called Statistical Reasoning in the Behavioral

306. math

WHAT IS 6 2/3+[3 1/3+7 1/3] = I THOUGHT IT = 16 4/3 IF I AM CORRECT THE ANSWER IS NOT THERE DO SIMPLIFY THE ANSWER WOULD THE ANSWER BE

307. math

a sales representative earned four times as much in the fourth week of jan than any other week in jan what is the income for the fourth week

308. English

Does this sentence make sense: After interviewing my neighbor, who does not want to release her name, so I will call her Ms.Smith,.....

309. pre-cal

Find the solution of the exponential equation, correct to four decimal places. 4^(2x − 1) = 6