1. math

How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation.

2. English

3. Which line from the stanza most effectively indicates that the singer has no direction in his life? a. Headed for the Frisco Bay. b. Looks like nothing’s gonna come my way. c. I’m sittin’ on the dock of the bay wastin’ time.

3. General Chemistry I

When a 0.432g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with heat capacity of 3046 J/C, the temperature rises by 7.82C. How much energy (in KJ) is released during combustion. **I got that answered** 3046x7.82C=23819.72J

4. economics

can someone explain the relationship between consumer expectations and economic performance? Could use some help.

5. General Chemistry I

Write the formation reactions. {You Must include the states of matter for each atom or compound} NaClO4(s)

6. Calculus

An offshore well is 2 miles off the coast. The refinery is 4 miles down the coast. If a laying pipe in the ocean is twice as expensive as on land, what path the pipe should follow in order to minimize the coast. Is the answer 2.1? Can you some list their

7. chemistry

why bond angle in cl2o is larger than h2o

8. Chemistry

The SI unit of length is a meter, which is defined as the length equal to 1,650,763.73 wavelengths of light emitted by a particular energy transition in krypton atoms. Calculate the frequency of the light to three significant figures.

9. Chemistry

Calculate the volume of oxygen you would need, at 1.00 atm and 298 K, to completely oxidize 51g of glucose.

10. PHYSICS!

an object weighs 528.0 Newton. It is being pushed along a horizontal surface by a 475.0-Newton force. Determine the mass of the object in a numerical form.

11. PHYSICS

A 5.00-g bullet is fired into a 500-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 10.00 cm. What was the magnitude of the momentum of the combined mass immediately after the collision?

12. ap chemistry

Which of the following reactions as written corresponds to a standard formation reaction? 1. 2H (g) + O2(g) ! H2O2 (`) 2. Na(s) + 1 2 Cl2(g) ! NaCl(s) 3. CO2(s) ! CO2(g) 4. SO2(g) + 1 2 O2(g) ! SO3(g) 5. 2 H2(g) + O2(g) ! 2 H2O(`)

13. maths

two consecutive sides of a parallelogram are 4x+5y=0 and 7x+2y=0.if the equation to one diagonal is 11x+7y=9,find the equation to the other diagonal

14. math

Write the following ratio in simplest form: 32 min : 36 min

15. ap chemistry

Consider the reaction Ni(s) + 4CO(g) ! Ni(CO)4(g) Assuming the gases are ideal, calculate the work done on the system at a constant pres- sure of 1 atm at 75C for the conversion of 1.00 mole of Ni to Ni(CO)4.

16. algebra

Rewrit the equation in vertex form. Name the vertex and y-intercept. y=3/5^2+30x+382 I need some help do not understand these type of problems.

17. ap chemistry

How much heat is released if 2.00 moles CF2Cl2 reacts with 70.0 g F2 with a 75.0 percent yield? CF2Cl2 + F2 ! CF4 + Cl2 H for this reaction is -401 kJ/mol rxn. 1. 553 kJ 2. 739 kJ 3. 985 kJ 4. 601 kJ 5. 1069 kJ 6. 802 kJ

18. Physics

The distance between a 10 cm tall candle and the reflecting surface of a concave mirror is 40 cm. The radius of curvature of the mirror is 25 cm. Now, A. What is the focal length of the mirror? B. What is the image distance? C. What is the magnification of

19. CHEM HELP ANYONE ASAP

Arrange the members of the following set of cations in order of increasing ionic radii: Sr2+ Ba2+ Rb+ K+ I understand that Sr2+ = 132 pm Ba2+ = 149 pm Rb+ = 166 pm K+ = 152 pm increasing ionic radii ....Sr2+ , Ba2+ , K+, Rb+ But the its not going in online

20. ap chemistry

Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO(g) + O2(g) ! 2CO2(g) H for this reaction is −135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted?

21. PHYSICS HELP!

A typical propeller of a turbine used to generate electricity from the wind consists of three blades as in the figure below. Each blade has a length of L = 33 m and a mass of m = 415 kg. The propeller rotates at the rate of 21 rev/min. 120degree angle

22. ap chemistry

What types of intermolecular interactions does chloroform (CH3Cl) exhibit? I) London dispersion II) dipole-dipole III) hydrogen bonding IV) covalent bonding Recall that chloroform is tetrahedral elctronic geometry with C as the central atom.

23. math

Alex came home after school one day and found that his mother had left a plate of cookies. Alex ate 1/4 of the cookies. When his sister Bernice came home, she ate 1/3 of the remaining cookies, and when Carla came home, she ate 1/2 of the cookies on the

24. ua

Assume you are performing the calibration step of Experiment 8 and you begin with 70 g of water at 20 oC and 70 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,

25. chemistry

A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is the density of this gas mixture at 18.0°C and 771 mmHg? Assume ideal gas behavior.

26. Geometry

A museum was designed without windows, but a truncated cylindrical skylight lightens the building. In the development of this, the architect has areas where the angles formed at junctures are vertical angles. If a pair of vertical angles measures 5x - 54

27. math

Jacob opens a savings account on January 1 with a deposit of \$350. He has "direct deposit," in which \$25 is deposited every other week. The bank also charges a \$3 monthly processing fee. How much money will he have at the end of the year?

28. math

Assume the \$8,000 Treasury bill, 1.75% for 50 weeks. Calculate the effective rate of interest.

29. PHYSICS HELP-multiple choice

A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the red ball after the collision? A. zero. B. -2.0 m/s. C. +3.0 m/s. D. +2.5 m/s. E. +5.0 m/s. I think zero

30. physics

for an 84 kg person standing at the equator what is the magnitude of angular momentum about the earths center due to earth's rotation

31. Calculus

A rancher has 900 meters of fence to enclose a rectangular corral. The corral is to be divided into four subcorrals. What are the overall dimensions of the large enclosure that yield the maximum area?

32. Physics

Which of the following statements is not true about refraction? Refraction occurs when light's velocity changes. The angle between the refracted ray and the normal is called the angle of refraction. When light moves from a rarer to a denser medium, it

33. Physics

A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

34. Physics

When the pendulum bob reaches the mean position, the net force acting on it is zero. Why then does it swing past the mean position?

35. Physics

Monochromatic light of wavelength 550 nm passes through a diffraction grating that has 55000 lines/m. A bright line appears on the screen at an angle of 12.23o from the central bright fringe. What is the order of this bright line? 5 6 7 8

36. Physics

A student pushes stright along the handles of a mower with a force of 200 N. The handles make a angle of 20°, with respect to the horizontal. The frictional force for the 25 kg mower is 100 N. What is the normal force on the mower, and what is the

37. PHYSICS

A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

38. Physics

What is the critical angle of light traveling from benzene (n=1.501) into air? 40.05o 48.22o 41.78o 62.63o

39. SAT Essay

Assignment: Is it important to question the ideas and decisions of people in positions of authority? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading,

Hi! Sorry, I don't know what subjects you teach, but can you check my answers please? 1. Starches and sugars that provide energy (1 point) kidneys enzymes carbohydrates vitamins 2. The system that removes waste from the body and controls the body's water

41. math

If you are flying to a city 800 miles away, what will be the difference in flight times between flying into a 40-mph headwind and flying with a 40-mph tailwind if the plane's maximum speed with no wind is 160 mph?

42. chemistry (organic)

Iodobenzee steam distills at 98.2C. How many molecules of water are required to carry over 1 molecule of iodobenzene? How many grams of water per gram of iodobenzene?

43. Physics

Which of the following equations describe the condition for observing the fourth dark fringe in an interference pattern correctly? d sinθ = λ d sinθ = 4λ d sinθ = 5λ/2 d sinθ = 7λ/2 I would think B but I feel like the answer that has a '4' in it

44. ap chemistry

1.95 mol of an ideal gas at 300 K and 3.00 atm expands from 16 L to 28 L and a final pressure of 1.20 atm in two steps: (1) the gas is cooled at constant volume until its pressure has fallen to 1.20 atm, and (2) it is heated and allowed to expand against a

45. Chemistry

If you have 1.80 moles of H2, how many gram of NH3 can be produced?

46. chemistry

A TUMS tablet was dissolved in 110.00 ml of 0.1022 M HCl and analyzed for CaCO3 according to the procedure described in the lab manual. It took 7.48 ml of 0.1005 M NaOH to reach the endpoint. Calculate the mass of CaCO3 in TUMS tablet to the correct number

47. Chemistry

A 32.907-g sample of a hydrate of Au (CN)3 contains 5.406 g H2O What is the formula for the hydrate? What is the percent water in this compound? What mass of this hydrate contains 100.0 g H2O?

48. ap chemistry

Consider the reaction 2 Al2O3(s) ! 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ?

49. chemistry

A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven and the temperature of

50. Physics

Which of the following equations describes the condition for observing the fourth bright fringe in Young's double-slit interference pattern? Assume n = 0 for the central bright fringe. d sinθ = λ d sinθ = 3λ/2 d sinθ = 3λ d sinθ = 4λ

51. physics

If Joe weighs 100N on the moon how much will Joe weigh on earth? N & kg

52. math

If an airplane is moving 300 mph, relative to the air, into a headwind of 15 mph, what is its speed relative to the ground?

53. chemistry

How many grams of iron metal do you expect to be produced when 305 grams of a 75.5 percent by mass iron(II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) 3 Fe (s) + 2

54. PHYSICS

A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg · m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the

55. chemistry

If 4.83 mL of an unknown gas effuses through a hole in a plate in the same time it takes 9.23 mL of argon, Ar, to effuse through the same hole under the same conditions, what is the molecular weight of the unknown gas?

56. Physics

A certain lightbulb has a tungsten filament with a resistance of 28 Ω when cold and 144 Ω when hot. If the equation R = R0 [1 + α ∆T ] can be used over the large temperature range involved here, find the temperature of the fila- ment when it is hot.

57. ap chemistry

Consider the reaction 2 Al2O3(s) -> 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol How much heat is generated when 0.455 L of a 3.60 M Al solution reacts with 1.05 mole O2 ?

58. Physics

A wire with a circular cross section and a resistance R is lengthened to 3.77 times its original length by pulling it through a small hole. After being pulled through the hole, the total volume of the wire is unchanged. Find the resistance of the wire

59. physics

A wagon is pulled by a handle making an upward angle of 25° with a force of 25 N. What is the horizontal force pulling the wagon foward? What is the force lifting the wagon off the road?

60. Physics

"You will measure the tension T, the mass m, and the length L of your spring. In terms of these variables, what is the expected frequency of the fundamental standing wave?" I found the fundamental frequency to be: f = 1/2L * sqrt(T/m/L)?

61. ap chemistry

Calculate the standard reaction enthalpy for the reaction NO2(g) ! NO(g) + O(g) Given: O2(g) ! 2O(g) H = +498.4 kJ/mol NO(g) + O3(g) ! NO2(g) + O2(g) H = −200 kJ/mol 3O2(g) ! 2O3(g) H = +285.4 kJ/mol

62. algebra 1

a number decreased by -4 is at least 9

63. ap chemistry

3.5 g of a hydrocarbon fuel is burned in a ves- sel that contains 250. grams of water initially at 25.00 C. After the combustion, the temper- ature of the water is 26.55 C. How much heat is evolved per gram of fuel burned?

64. ap chemistry

The energy change H associated with the reaction NBr3(g) + 3H2O(g) ! 3HOBr(g) + NH3(g)is +81 kJ/mol rxn. These bond energy values might be useful:O-H 459 kJ/mol; N-H 386 kJ/mol;O-Br 201kJ/mol. The strength of the N Br bond is

65. ap chemistry

Propane (C3H8) is burned in oxygen to pro- duce carbon dioxide and water. The heat of combustion of propane is -2012 kJ/mole. How much heat is given off when 3.0 mol C3H8 are reacted with 10.0 mol O2? 1. 4024 kJ 2. 2012 kJ 3. 916 kJ 4. 1555 kJ 5. 5122 kJ

66. AP Psychology

In comparison to generalized anxiety disorder, panic disorder is characterized by periods of distress that are more intense and more prolonged. less intense and less prolonged. more intense and less prolonged. less intense and more prolonged. unwanted

67. chemistry

For each reaction, calculate the moles of product (in parentheses) when 2.00 moles of each reactant is used A: 2SO2 + O2 = 2SO3 (SO3) B: 3Fe + 4H2O = Fe3O4 + 4H2 (Fe3O4) C: C7H16 + 11O2 = 7CO2 + 8H2O (CO2)

68. English

Read the following lines from “Mother to Son”: So, boy, don’t you turn back Don’t you set down on the steps ‘Cause you finds it kinder hard. What advice is the mother giving with the metaphor used in these lines? A. Son, don’t give up on

69. AP Statistics

A Kansas University research station wishes to investigate if a new variety of wheat is more resistant to a disease than an old variety. It is known that this disease strikes approximately 15% of all plants of the old variety. A field experiment was

70. Marh

What is the reciprocal of 3.75?

71. ap chemistry

What is the value of w (work) when 1.3 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in

72. Calculus

An open top box with a square base is to have a volume of exactly 500 cubic inches. Find the dimensions of the box that can be made with the smallest amount of materials.

Hi! Can you check my answers please? Thanks! And, can you help me with 3 please? I have tried and tried but I cannot solve it can you explain how? Thanks! 1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with

74. Physics

Light cannot be linearly polarized by: transmission reflection diffraction diffraction I would think reflection...?

75. physics

A thin non-uniform rod of length L=2.00 m and mass M=9.00 kg is free to pivot about an axis at one end. The CM of the rod is at a distance d=1.30 m from that end as illustrated below. The rod's moment of inertia about an axis through its CM and parallel to

76. literary

Which is the least common way for modern writers to convey their themes? a. through explicit statement b. through development of a central conflict c. through the values and motivations of the characters d. through the thoughts of the characters

77. CHEMISTRY

In each reaction, calculate the moles of product (in parentheses) when 3.00 moles of each reactant is used. A: 4Li+O2 = 2Li2O (Li2O) B: Fe2O3+3H2 = 2Fe+3H2O (Fe) C: Al2S3+6H2O = 2Al(OH)3+3H2S (H2S) Please show work, Thanks

78. chemistry

A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven and the temperature of

79. Physics

Two window washers, Bob and Joe, are on a 3.00-m-long, 335-N scaffold supported by two cables attached to its ends. Bob weighs 755 N and stands 1.00 m from the left end,Two meters from the left end is the 500-N washing equipment. Joe is 0.500 m from the

80. Math

Number this column from least to greatest: ounce, kilogram, ton, metric ton, gram, and decagram.

81. Math

If f(x) + x^(2)[f(x)]^5 = 34 and f(1) = 2, find f '(1).

82. spanish

Yo juego tenis en la______ de tenis. Question 4 (Fill-In-The-Blank Worth 1 points) Yo juego tenis en la______ de tenis.

A solid, uniform disk of radius 0.250 m and mass 51.1 kg rolls down a ramp of length 4.60 m that makes an angle of 18° with the horizontal. The disk starts from rest from the top of the ramp. a)Find the speed of the disk's center of mass when it reaches

84. math

Ms.Lecky ordered pizza for a party. 1 5/8 of the cheese pizzas and 2/3 of the ham pizza were not eaten. How much pizza was left?

85. SAT Essay

Can someone please critique my essay? Thank you! Assignment: Should people take more responsibility for solving problems that affects their communities or the nation in general? Plan and write an essay in which you develop your point of view in this issue.

86. ap chemistry

How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 8.1 liters against a constant external pressure of 0.0100 atm? Answer in units of J

87. Chemistry

A sample of air was compressed to a volume of 18.0 L. The temperature was 290.0 K, and the pressure was 6.80 atm. How many moles of gas were in the sample? If the sample had been collected from air at P = 2.0 atm., what was the original volume of the gas

88. personal finace

Calculate the return on investment in dollars and as a percentage for an investment that you purchase for \$500 and sell for \$600.

89. physics

Suppose you walk 18.0m straight west and then 25.0 north. How far are you from your starting point and what is the compass direction of a line connecting your startting point to your final position?

90. physics

A typical color television draws about 2.8 A when connected to a 145 V source. What is the effective resistance of the T.V. set? Answer in units of Ω.

91. statistik and probability

n a college class of 250 graduating seniors 50 have jobswaiting. 10 are going to medical school, 20 are going to lawschool, and 80 are going to various other kinds of graduateschools. Select one graduate at random. a. What is the probability that the

92. INTRO TO PHYSICS

Each of the following objects has a radius of 0.174 m and a mass of 2.16 kg, and each rotates about an axis through its center (as in the table below) with an angular speed of 37.3 rad/s. Find the magnitude of the angular momentum of each object. >Hoop of

93. ENGLISH

Identify the helping verb in the sentence below. We will attend the party if we finish our chores in time. attend finish will will attend I THINK THE CORRECT ANSWER IS C. will.......help please

94. Math

What is the reciprocal of .26

95. Intro to physics

A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg · m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the

96. algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

97. math

write a real-world problem involving multiple steps, then solve our problem

98. Math

Construct a square ABCD,length of whose one side is 4 cm.

99. science

when phenolphthalein is added to ammonium hydroxide the color of the final solution is pink?

Forces of 11.1N north, 19.9N east, and 14.0N south are simultaneously applied to a 3.62kg mass as it rests on an air table. What is the magnitude of its acceleration? I already did this part and i got 5.56 m/s^2 BUT PLEASE HELP ME WITH part b!! b)What is

101. Chemistry

In the ground-state electron configuration of Fe^{3+}, how many unpaired electrons are present? An explanation would be great, thanks.

102. physics

A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force

103. math

Below are the median prices of homes sold in 2009, by region of the country. South 158,300 Northeast 248,800 Midwest 139,500 West 243,200 U.S. 180,100 The median selling price of a home in the South was approximately what fraction of the median selling

104. PHYSICS

Two window washers, Bob and Joe, are on a 3.00-m-long, 335-N scaffold supported by two cables attached to its ends. Bob weighs 755 N and stands 1.00 m from the left end,Two meters from the left end is the 500-N washing equipment. Joe is 0.500 m from the

105. math

Find the relative extrema, if any, of the function. Use the second derivative test, if applicable. (If an answer does not exist, enter DNE.) g(x)=x^3-6x relative maximum (x, y) = ( , ) relative minimum (x, y) = ( , )

106. Grammar and hyphens

Select the sentence which is correctly punctuated. A) This is a well-developed white female. B) This is a well developed white female. I answered B

107. statistics

Let x be a continuous random variable that is normally distributed with a mean of 65 and a standard deviation of 15. Find the probability that x assumes a value less than 44.

108. Physics

A 5.00 cm tall candle is placed at a distance of 50.0 cm from a double convex lens having a focal length of 15.0 cm. What is the image distance? -21.4 cm 21.4 cm 65 cm 35 cm

109. college math

two bakeries produce three types of cookies, chocolate chip, sugar, and peanut butter. the cookies are produced in batches containing some of each type of cookie. the cooks will not break up a batch, so you must buy an entire batch of cookies if you want

110. biology

what is the function of the diaphragm?

111. Thermodynamics

Design Problem- A steam boiler may be thought of as a heat exchanger. The combustion gases may be modeled as a streram of air because their thermodynamic properties are close to those of air. Using this model, consider a boiler that is to convert saturated

112. AP Physics

A curve in a road is banked. There is a car on the curve. What is the component of its weight parallel to the incline? The acceleration of gravity is 9.8 m/s 2 . Answer in units of N Mass of Car: 1.5Mg coefficient of friction: 0.17 theta: 25 degrees

113. Algebra

solve : 5x-10y=-40 for y I was thinking it was 5x-10(-40)...then solve am I close?

114. AP Statistics

A local McDonald's manager will return a shipment of hamburger buns if more than 10% of the buns are crushed. A random sample of 81 buns finds 13 crushed buns. A 5% significance test is conducted to determine if the shipment should be accepted. The p value

115. math

if tommy goes to the store one day and get a cheeseburger for \$5.00 and come back and gets a burger for \$8.00 and fries with and a shake milk shake and is left with on the .03 and started off with \$40.00.How is that possible if all he got was the items

116. math

A section of the railway has a slope of about 0.73. In this section, a vertical change of 1 unit corresponds to a horizontal change of what length?

117. PHYSICS

A 5.00-g bullet is fired into a 500-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 10.00 cm. What was the magnitude of the momentum of the combined mass immediately after the collision? The Ans is 0.707 kg

118. Thermodynamics

Design Problem- A steam boiler may be thought of as a heat exchanger. The combustion gases may be modeled as a streram of air because their thermodynamic properties are close to those of air. Using this model, consider a boiler that is to convert saturated

119. Childhood Education

Compare the environment for toddlers with one suitable for infants. How are the areas similar? How are they different?

120. physics

A 0.104 kg rock is attached to a 1.92 m long string and swung in a horizontal circle at a speed of 29.7 m/s. Find the tension in the string. Neglect the effect of gravity.

121. Childhood Education

Compare the environment for toddlers with one suitable for infants. How are the areas similar? How are they different?

122. math

A hardware supplier manufactures three kinds of fasteners, type A,B and C. Production restrictions require it to make 10 units more of type C than the total of the other types and twice as many type B as type A. The shop must produce a total of 490 units

123. Physics

A 201-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the log has an

124. physics

A car travels at 107 km/h on a level road in the positive direction of an x axis. Each tire has a diameter of 74.0 cm. Relative to a woman riding in the car and in unit-vector notation, what are the velocity at the (a) center, (b) top, and (c) bottom of

125. MATHS

prove by mathematical induction that 7^n+4^n+1 is divisible by 6

126. INTRO TO PHYSICS

a) A simple pendulum consists of a small object of mass 3.3 kg hanging at the end of a 2.0-m-long light string that is connected to a pivot point.Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string

127. physics

A spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4mm. What is the angle between the axis of the tool and the axis of the lens?

128. writing skills

i need to write a essay on writing skills and writing assignment

129. Physics HELP!!

two horizontal forces F1 and F2, acting on an object of mass 1.11kg. The magnitude of F1 is 27.56N. The object moves strictly along the horizontal x-axis, which we choose as positive to the right. Find the magnitude of F2 if the object has a horizontal

130. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) His surgery is scheduled for 1530. B) His surgery is scheduled for 15:30. C) His surgery is scheduled for: 15:30. My answer is B, C doesn't seem right with the colon at the end

131. math

translation rule that maps point D(7, –3) onto point D'(2, 5).

132. algebra

two bakeries produce three types of cookies, chocolate chip, sugar, and peanut butter. the cookies are produced in batches containing some of each type of cookie. the cooks will not break up a batch, so you must buy an entire batch of cookies if you want

133. calculus

really stuck on these two, steps would be greatly appreciated. gotta find the derivative thanks! first one: f(t)=2^(log5t) the 5 is the base second one: y=(2(x^2) - 1)^5 /(√(x+1) for the second one you have to use logarithmic differentiation

134. Grammar and punctuation

Select the correctly punctuated, spaced, and capitalized format in a medical report. A) REASON FOR CONSULTATION: repeated pregnancy loss B) REASON FOR CONSULTATION: Repeated pregnancy loss C) REASON FOR CONSULTATION: Repeated Pregnancy Loss My answer is B

135. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) The heart is slightly enlarged; his breathing is much worse. B) The heart is slightly enlarged - his breathing is much worse. C) The heart is slightly enlarged his breathing is

136. Cryptology 101

DES and AES are both “turn the handle” algorithms, in that they use repetition of some number of very similar cycles. What are the advantages to implementer, users, cryptanalysts of this approach?

137. English (poetry)

I have to analyze a Shakespearean sonnet, and I understand the meaning however i'm having difficulties identifying similes, metaphors, and personification in it. " When in the chronicle of wasted time I see descriptions of the fairest wights, And beauty

138. physics

A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force

139. physics

An object with a mass of 3.4 kg is originally at rest on a horizontal, frictionless surface frictionless which is at the top of a frictionless incline with a length of 6 meters which is inclined at 28.9 degrees. Someone's hand applies a force to the object

an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the ramp is connected to a second object of mass 2.17kg on a horizontal surface below an overhang that is formed by the inclined

141. physics

State keplers law of planetary motion

142. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) He was prescribed: Carafate 1 g 4 times daily, 40 minutes after each meal, Reglan 5 mg at bedtime, aspirin p.r.n. B) He was prescribed Carafate 1 g 4 times daily, 40 minutes

143. Math

Solve the problem. Estimate to check your solution is reasonable. 1. During a 1 hour phone in talk show eight callers made calls hat took 3 1/4 minutes each. a) How many minutes were used by the eight callers? b) what fraction of the hour was used by

144. math

find an equation of the tangent line to the graph of y=e^(2x-3) at point (3/2,1) thanks!

145. Childhood Education

Can anyone answer this question? Compare the environment for toddlers with one suitable for infants. How are the areas similar? How are they different?

146. Physics

A 5.00 cm tall candle is placed at a distance of 50.0 cm from a double convex lens having a focal length of 15.0 cm. What is the magnification of the image? -0.429 -2.33 0.429 2.33

147. Math

A dock is 7 3/4m high. The portion of the dock above water one day was measured at 2 2/5 m high. How much of the dock structure was below water that day?

148. Math

Hi Ms. Sue I got 34 for answer c and 17/30 for answer d Thanks for your help, much appreciated

what is the mining industry in Australia?

150. basic operations and business basics exan 06041500

do you have a copy of the exam id like to check my answers.

151. eco/365

What has been our national policy over mergers and acquisitions? Is it different for horizontal, vertical, and conglomerate mergers

152. maths

prove by mathematical induction that 7n+4n+1 is divisible by 6

153. Physics

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45 degrees to the normal? The refractive index of water is 1.333. 32.04 45.00 59.99 33.76 I was thinking A or D

154. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) The patient will see Dr. Jones, cardiologist, Dr. Green, pulmonologist, and Dr. Frank, physicaltherapist. B) The patient will see Dr. Jones, cardiologist; Dr. Green,

155. math

write in simplest form: the ration of 28 feet to 49 feet

156. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He re-sent the package. B) He resent the package. My answer was A although B looks like it could be right too

157. physics

helicopter at rest, uniformly accelerates upwards. After 25s flare fired horizontally from the heli. flare measured to 8s to reach the ground. a)What is the acceleration of the helicopter b) height of the helicopter the instant the flare reached the

158. chem

Is CaCl2 an ionic compound or molecule? plss help. i'm just a little bit confused.

159. US HISTORY I

A New World to the American Revolution Directions: IDENTIFY and give the SIGNIFICANCE of 5 of the 7 terms below. (Caveat! Be thorough! An IDENTIFICATION should answer the four criteria 1.What? 2.Where? 3.When? and 4.Results?, while the SIGNIFICANCE should

160. Math Solve the following

Rebekah is an elementary school teacher. She is making an individual craft project kits that requires 2/3 of a cup water to complete. How many cups of water will she nee if she i making the craft project kits for each of he24 students?

161. statistics

An archer normally hits the target with probability of 0.7. She hires a new coach for a series of special lessons. After the lessons she hits the target in eleven out of fourteen attempts.

162. englsih writing tips

So I really want my writing to improve. My teacher is extremely critical on people's writing. I know this is to help us but I feel incredibly stupid when she covers my paper with harsh comments. I just want her to like something in my writing. I feel like

163. Math

Reasonables: I am between 24 and 34 what number am I

164. Intergated chemistry/physics

Draw a setup containing 3 gears. For every turn of the input gear, you need the output gear to spin 9 times. The drawing doesn't have to be perfect, but make sure to label the input gear, the output gear, and the number of teeth on each gear. Please E-mail

165. physics

An object of mass 26 kg is thrown straight upwards from the ground at 27 m/s. Due to air resistance (a non-conservative force), the object loses some of its initial energy during its trip to reach maximum height and only travels to a height above the

166. physics

A mass of 2.9 kg is hanging vertically from a string with a length of 2.4 meters. It is then raised to an angle of 50 degrees with the vertical and given some velocity, v. If the string breaks at a tension of 163.8 Newtons, what is the maximum value for v

167. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) His chief complaints were: impotence, flatulence, and fatigue. B) His chief complaints were: Impotence, Flatulence, and Fatigue. C) His chief complaints were impotence,

168. ENGLISH

Choose the correct vocabulary word for the following sentence: “We know the stranger came from a distance because of the _______ he spoke.” (1 point) criteria figurative language dialect I THINK IT IS DIALECT?

169. algebra

Solve: 2(2-x)

170. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) On May 30, he suffered a stroke, although he did not realize it, thankfully, he finally saw a doctor on June 2, or else he probably would have had another stroke. B) On May 30,

171. pre-algrebra

needing to solve word problems with linear equatios, if there something to help work into them?

172. physics

a new brand of solar panel generates 500 watts of electrical energy. how much energy would it produce after 24 years."

173. ap chemistry

A sample of gas in a cylinder of volume 4.09 L at 289 K and 3.43 atm expands to 7.73 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work

174. Physics

An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction

175. ACC305 Accounting for Decision Making

Describe the complications that arise when LIFO or average cost is used with a perpetual inventory system. Use specific examples and references. The part that I am having trouble with is finding examples. I have the rest of the work done now I just need

176. Math

A line has a slope of 6/7 and a y-intercept of -5. Which of the following is the equation of the line? 7x - 6y = -35 7x - 6y = -5 6x - 7y = 35 6x - 7y = -35 I'm honestly not sure with this, I'm thinking that it's 7x - 6y = -5.. Not sure though. Also, could

177. Calculus

1. Determine whether Rolle's Theorem applied to the function f(x)=((x-6)(x+4))/(x+7)^2 on the closed interval[-4,6]. If Rolle's Theorem can be applied, find all numbers of c in the open interval (-4,6) such that f'(c)=0. 2. Determine whether the Mean Value

178. criminal justice

Zoë came racing into the police station, bedraggled and obviously traumatized. She told the officer at the desk that her ex-husband had held her hostage for the past two hours. He had a gun and kept it in plain sight the whole time. The incident occurred

179. English

1. At Thanksgiving Americans eat a roast turkey. 2. On Thanksgiving Americans eat a roast turkey. (Which preposition, do we have to use 'at' or 'on' before 'Thanksgiving'? Are both OK?) 3. on/at the weekend 4. on/at Sunday 5. on/at New Year's Day 6. on/at

180. Math

one Percentage increase / decrease formula in excel that full all the conditions that are mentioned below 2012 2011 1 0 0 2 0 500 3 500 0 4 500 1000 5 1000 500 6 500 (1000) 7 (1000) 500 8 (500) (1000) 9 (1000) (500) Dear its urgent

181. biology

how does the bladder act in elimination?

182. science

what is a ph scale? what is a acid? what is alkalis? what acid and alkais can you find around the house? (put pictures to go with this). when u are giving an explanation of what ph scale, acid and alkalis mean plz be as clear as possibe, use understandable

183. English

How can I make this sentence better for my objective on my resume. To obtain an administrative assistant position where my professional skills will be used to the fullest.

184. algebra 1

Solve the following systems of linear equations using algebraic method. 1)3y=11-2x 3x=y-11 2)8x-6y=14 12x-9y=18

185. english

Similarities between The Storm by Mcknight & Once upon a time by Nadine Gordimer?

186. Grammar and punctuation

Select the sentence which is correctly punctuated, spaced, and capitalized. A) There is only one alternative to growing old: dying young. B) There is only one alternative to growing old: Dying young. C) There is only one alternative to growing old; Dying

187. Science

Describe the steps in the process by which nitrogen from fertilizer used on farmlands located many miles away ends up in the Mississippi River

188. algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

189. Math

one Percentage increase / decrease formula in excel that full all the conditions that are mentioned below 2012 2011 1 0 0 2 0 500 3 500 0 4 500 1000 5 1000 500 6 500 (1000) 7 (1000) 500 8 (500) (1000) 9 (1000) (500) Dear its urgent

190. For: Ms. Sue, Steve, Writeatecher, Dr.Bob222

Hi everyone i wrote in the heading. I just want ed to say thanks for all the help you give me. I know sometimes I may get on your nerves or be annoying, and I just wanted to say sorry. Also thank you once agian for all the help.

191. eco/365

What does our government hope to achieve through the use of its antitrust policy? Is it getting softer or harder of late?

192. Physics

An object is dropped from a cliff thatis 256 m above the sea. just prior to splashing into the water, how fast is it going? How long did it take to fall?

What are the major industries in Australia?

194. Grammar and hyphens

Select the sentence which is correctly punctuated. A) His step-daughter is 13 years old. B) His stepdaughter is 13 years old. I answered A

195. elementary

explain it jake says that adding 0 does not change a sum.is he correct?explain.

196. Chemistry

A 7.30-L container holds a mixture of two gases at 45 °C. The partial pressures of gas A and gas B, respectively, are 0.342 atm and 0.527 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?

197. MATH

CALCULATE \$310 LOAN AT THE RATE OF 12% PER YEAR. HOW MUCH INTEREST IS OWED FOR 4 MONTHS

198. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He was one-half hour late. B) He was one half hour late. I answered A

199. All??

Can anyone tell me where to find a website for a free answer key for 2012 mosby's nursing assitant Workbook??

200. MATH

IF YOU DIVIDE PARK A(656 AREA SQ MI)INTO 32 EQ.PARTS, EACH CONTAINING A WHOLE # OF SQ. MI. HOW LARGE WOULD EA. PART BE? HOW LARGE WOULD THE REMAINING AREA BE?

201. Physics

When we lauch a space shuttle will it go with Earths rotationor would it go opposite?

202. math

12.value: 10.00 points Joanne Flynn bought a new boat for \$15,400. She put a \$2,600 down payment on it. The bank’s loan was for 46 months. Finance charges totaled \$4,859.86. Assume Joanne decided to pay off the loan at the end of the 24th month. (Rule of

203. algebra

Solve the quadratic equation by completing the square. -3x^2+9x=1 Not sure how to do these, if someone could expplain.

Mary is 1/6 the age of her mother this year. Next year she will be 1/5 the age of her mother. In how many years will she be 1/3 her mother's age.

205. math

Your store’s average basket (transaction) size for the month of March was \$11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of \$9.00 for the month of March

206. math

Two runners start moving from the same point A on a circular track but in oppostite directions. Their speeds are 5 ft. per second and 9 ft. per second. If they start at the same time and finish when they first meet at point A again, how many times do they

207. Physics

An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction

208. Math

If you have a \$46.75 Markup on a product , What would the percentage of this markup be?

209. Grammar and hyphens

Select the sentence which is correctly punctuated. A) The cancer was in the cul-de-sac. B) The cancer was in the cul de sac. I answered A, B just doesn't look right

210. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He self-medicated his migraine headache. B) He self medicated his migraine headache. I answered A

211. calculus

really stuck on these two, steps would be greatly appreciated. gotta find the derivative thanks! first one: f(t)=2^(log5t) the 5 is the base second one: y=(2(x^2) - 1)^5 /(√(x+1)

212. chemistry

I want to make a 3% potassium sulphate solution. How many grams or mg I need per 100 ml

213. Physics

Given that the Sun has a mass 333,000 times larger than Earth’s mass and Earth has an average distance of 1.49 x 1011 m from the Sun, at what distance from the Sun is the center of mass of the Earth-Sun system? a. 1.00 m b. 4.47 x 105 m c. zero d.

214. chemistry

can you please answer this question. "The concentration of acetic acid in commercially available white vinegar is reported to be 5 % w/v. determine the molarity of the solution"

216. algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

217. Math

1. 13/5x25/39= 2.4 3/7 devide 7/7= 3.105/31 devide 5/62= 4.5 5/9x 90/100= 5. 8/7x 5/12x 3/10= 6.8x3/7=

218. math

2/5 out of 1300 students participated in a soccer game. How many participated. My answer is 520, am I correct. Thanks

219. physics

a car left panel at 12:35h and arrived in place x at 03:10h it travelled at average speed of 45 km per hr. calculate the distance from penal to place x ?

220. Civics

I have to place President Obama and Governor Romney on the political spectrum. It pretty much looks like a graph and one side is social and one side is economical. I'm having issues placing them. Where would Obama be and where would Romney be? Thanks

221. recipe

Can someone post me an easy short recipe and supplies/ingrediants needed to make a cake pop?

222. 5th grade math word problems

One packet of sweetner is 1 gram and has 4 calories. If Joan uses 4 grams each workday, Monday through Friday, and half as much each weekend day, how many calories does she use for sweetner each week?

223. physics

define the term torque or moment of force. Give its units and dimensions

224. DMA 020

What fraction with a denominator equal to 108 is equivalent to 5/9

225. Social Studies

What was the role of slavery in the rise and fall of the American Nation?

226. math

Russell has a pipe that is 150inches long. It must be cut into 3 1/8 inch segments for a project. How many segments will he have?

227. math

Lily, Jane & Betty gave away 224 balloons at a carnival. Lily gave away 4 times as many balloons a Betty while Jane gave away half as many balloons as Lily. How many balloons did Jane give away?

228. elementary

nuber sense minnie has 6 county cds and 5 rock cds.amanda has 5 rock cds and 6 country cds.who has more cds?explain.

229. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He will follow-up in 4 weeks. B) He will follow up in 4 weeks. My answer is B

230. Math

can somebody please help me answer this. Thank you.Rebeckah is an elementary school teacher. she is making an individual craft project kits that requires 2/3 of a cup of water to complete. How many cups of water will she needs if she is making the craft

231. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He has a 150-pack-year smoking history. B) He has a 150 pack year smoking history. I answered B

232. college algebra

For the given equation list the intercepts. Y= -2X/(X^2+1) I think I Have this right I am not for sure? y=-2x/(x^2+1) (0)=(-2x/x^2+1) -2x/x^2+1=0 -2/x+1=0 -2/x+1+0 -2/x*x+1*x=0*x -2+x=0 x=2 y-intercept y= -2*0/(0)^2+1 y=o/0^2+1 y=0+1 y=0/0+1

233. Grammar and hyphens

Select the sentence which is correctly punctuated. A) He used 1- and 2-inch bandages. B) He used 1 and 2-inch bandages. I answered A

234. health

what is the general purpose special sense organs?

235. Math Solve the following

Question: 1.Russell has a pipe that is 150 inches long. it must be cut into 3 1/8 inches segments for project. How many segments will he have? 2. Rebeckah is an elementary school teacher. she is making an individual craft project kits that requires 2/3 of

236. college math

a math student borrowed \$9300.00 from his local bank at 7% compounded quarterly to pay for his studies. the loan is to be repaid by equal payments at the end of every quarter over a two year term. a)construct the amortization schedule for the loan.

237. English

how has China's policies on population growth changed over the years?

238. physics

State law of orbit?

239. Algebra

2x+3 over 4 = x over 4

240. Grammar and hyphens

Select the sentence which is correctly punctuated. A) This white female, gravida 32, para 4, is well-developed. B) This white female, gravida 32, para 4, is well developed. I answered A

241. Math (Finance)

You have a note in the amount of \$10,000 at 9.5% interest running from january 5. to april 16 a. calculate the ordinary intrest. b. calculate the exact interest.

242. science

how is the menan buttes likely to look in future geologic ages

243. algebra

3-10+9X7= simpilfied

244. math

sort these numbers 5 10 16 19 24 37 40. describe sort rule

245. math

You need to hire a part-time associate to work 30 hours a week in your store. You have \$250 in labor budget for the new associate each week. You just interviewed an excellent candidate for the position who has requested to be paid \$9.00 per hour. Your

246. Jr. Math

FIND THE AREA OF A GARDEN THAT MEASURES 31/4 BY 4/5 YARDS. AREA=LXW. i GOT 23/5 AM I CORRECT. THANKS IN ADVANCE

247. math

A product costs \$42.75 per unit and we sell each unit for \$78.42 there is a difference of \$35.67. What is the percentage of the markup? Thank you.

248. science

i mean how is an franken storm form

249. geometry

what did mrs. clause say during the thunderstrom

250. Physics HELP!!

A 7.37kg fish is held by a taut string. If the fish is accelerated upward at a rate of 3.62m/s^2, what would be the tension in the string?

251. physics HELP

Im having problems getting the magnitude of the force in the problem i asked below i got the frictional and normal force please help me put these equations together