1. Math

Natalia picked 7 1/6 bushels of apples today and 4 5/8 bushels yesterday. How much more did she pick today?

2. Math

Determine the sum of the first seven terms of the geometric series in which ... F) t5 = 5 and t8 = -40 I'm stuck on this one!

3. Math

Determine the sum of the first 20 terms of the arithmetic sequence in which ... f) the 7th term is 43 and the 13th term is 109 I know you can make two equations : 43 = a + 6d and 109 = a + 12 d And subtract them to get d = 11 But I know there's another way

4. physics

A 500 g piece of silver at 150 degree Celsius is submerged in 1000 g of water at 5 degree Celsius to be cooled. determine the final temperature of silver and water given Cwater = 4.18 x 10 ^3 J/kg degree Celsius Csilver = 2.4 x 10^2 J/kg degree Celsius

5. Physics

A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 188.0 N at an angle of 26° with the horizontal. The box has a mass of 30 kg, and the coefficient of kinetic friction between the box and

6. maths

If P(x,y),F1(3,0), F2(-3,0) a nd 16x^2+25y^2=400, then find PF1+PF2.

7. Statistics

Which of the following statements are true about matched pairs analysis? I. In a matched pair analysis you use a single-sample procedure. The sample is made up of the difference between pairs of observations. II. In a matched pairs analysis the two

8. physics

a farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. the sledge hammer moves at a speed of 3.00 m/s and comes to rest on the spike after each swing. assuming all the energy is absorbed by the nail and ignoring the work by the nail, how much

In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner?

10. physics

sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall

11. physics

A solid sphere of mass m and radius r rolls with out slipping along the track.it starts from rest with the lowest point of tthe sphere at aheight h above the bottom of the loop of radius R,much larger than r.(a) what is the minimum value of h (interms of

12. Math

Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1) i need help plz

13. difficult chemistry

100 Liters of air at STP is slowly bubbled through 200ml of 0.03N Ba(OH)2 solution. The Baco3 formed due to reaction is filtered and few drops of phenolphthalein is added to the solution rendering it pink. The solution required 25ml of 0.2N HCL solution

14. Math

Okay, so I know this should be really easy but my mind is just drawing a blank: For each series, calculate t12 and S12 a) 37 + 41 + 45 + 49 + ... Okay so I calculated S12 to be 708, and I know that's right. For t12, I know I can easily find the general

15. Physics

The instruments attached to a weather balloon have a mass of 5.2 kg. The balloon is released and exerts an upward force of 98 n on the instruments. A)what is the acceleration of the balloon and instruments? B) after the balloon has accelerated for 10s, the

16. Math

A clothing store ordered 300 sweaters and sold 20 of them at \$100 the first week. The second week, the selling price was lowered by \$10, and 40 sweaters were sold. In the third week. The selling price was lowered by another \$10, and 60 sweated were sold.

17. Physics

Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 364 N, is applied at an angle α = 33° to the forward dashed line. The second force, F2 = 522 N, is applied at an angle β = 11° to the forward dashed

18. Physics

A 93 kg clock initially at rest on a horizontal floor requires a 614 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 510 N keeps it moving with a constant velocity. Find μs between the clock and the floor. Find

19. mec 112

A 10kg trunk lies on a horizontal rough floor,the coefficient of friction between the trunk and the floor is 0.75. Calculate magnitude of force P which is necessary to pull the trunk horizontally if the P is applied horizontally and at 30 degrees above the

20. physics

A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate. answer in

21. physics

Suppose the charge q2 in the figure below can be moved left or right along the line connecting the charges q1 and q3. Given that q = +15 µC, find the distance from q1 where q2 experiences a net electrostatic force of zero? (The charges q1 and q3 are

22. physics

a worker lays a rubber handled 0.500kg hammer down a sloped roof. it slides down the roof to a level portion of the roof where it slides another 2.oo m long this horizontal surface. the coefficient of friction between the rubber handle and the shingles is

23. math

Jamia is deciding between two long-distance telephone plans: • Plan A charges \$5 per month plus 6¢/min. • Plan B charges \$20 per month plus 1¢/min. Jamia usually makes about 200 min of long distance calls each month. Which plan costs less? Show your

24. science

Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide , dry ice. Note the diagram is not drawn to scale and contains breaks in the axes to signify this. Using the diagram, answer the following questions

25. PHYSICS

Determine the normal force for a laundry basket with a mass of 5.8 kg in each of the following situations (a) at rest on a horizontal surface (b) at rest on a ramp inclined at 12° above the horizontal (c) at rest on a ramp inclined at 25° above the

26. chem-

Draw the structures of the two monomers that yield Nomex®. can someone show me?

27. physics

A 0.155 kg baseball is thrown upward with an initial speed of 14.5 m/s. What is the force on the ball when it reaches half of its maximum height? (Disregard friction.) What is the force on the ball when it reaches its peak?

28. Physics

A 4.3 kg bag of groceries is in equilibrium on an incline of angle θ = 30°. Find the magnitude of the normal force on the bag.

29. Math precalculus II

The area of a sector of a circle with a central angle of 15π rad is 18 m². Find the radius of the circle. I set up my equation as: 18m^2=(1/2)(r^2)(1/5 pi) i isolate r^2 by dividing both sides by (1/2) and (1/5 pi, getting: 180pim^2=r^2 i then take the

30. CJ 216

Discuss the possible communication methods between the officer and his/her agency.

31. physics

A 200.0 N force moves a 120.0 kg crate on a friction less surface from rest to final speed of 9.6 m/s. what is the displacement of the crate at the time it reaches this speed ?

32. geometry

Write an equation of a circle with diameter AB.A(0,0),B(-6,8)

33. computers

What is the code to unlock the elite puffle on club penguin? P.S: This is very important to me so please give me the code.

34. math

How many equilateral triangles in the plane have two vertices in the set {(0,0), (0,1),(1,0),(1,1)}?

35. physics

a mechanic uses a chain and bloc pulley to lift a 875-kg engine 4.0 m to the top of the garage. the downward force on the chain over the 4.0 m distance is 5.0 x 10^4 N. a)calculate the work done in raseing the motor b)how much useful work was done c)what

36. math

Maria normally spends a half-hour driving to work. When her average speed is ten miles per hour slower than usual, the trip takes ten minutes longer. How many miles does she drive to work?

37. Math

Find the domain of the expression 4x^2-10x+3 and is this factorable?

38. science

How are cyclones formed

39. English

What 3 elements and introductory paragraph in an essay have? 1 hook 2 thesis statement 3????????

40. Math

A pizza box with a square base is to be made rom a rectangular sheet of cardborad by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If area of the base is to be 144 in^2, what piece of cardboard should be

41. physics

an elevator motor provides 45 W of power while lifting a 2000 kg elevator 35 m. if the elevator contains six passengers of the same mass and it takes 20.0 to accomplish this task, determine pass of each passenger.

42. math

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20

43. science

How are cyclones formed

44. physics

a 2.0 kg bad is held by a string to the ceiling . A 10 g bullet traveling at 200 m/s strikes the stationary bag. the height after the collision is 10.0 cm. assuming there is no friction, determine the speed, in meters per second, of the bag after the

45. Probability-Math

Please forgive me for posting this for the 3rd time but I really need to learn this: A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to

46. biology honors

Why do leaves tend to be flat.choices a.so that water can easily be absorbed and carried to the rest of the plant. B.so that sunlight can easily penetrate to the leafs photosynthetic tissues. C.so that nutrients can easily enter the plant and be be used

47. chemistry

If the diffusivity is observed to double when the temperature is increased by 10 degrees C, what is the activation energy for diffusion? Express your answer in units of eV.

48. Math

Is there a way to find the term number of a sum in an arithmetic series? Like if you had the sum of the first 12 terms in a series could you find the term value of term 12 using the sum? For example in one of my previous questions : For each series,

49. Science

In the subject guide search on EDSeek's Home page, enter the following subject term: paleobotany. Based on the results from this search, choose the best answer to this question. 8. Which of the following related subjects is listed as a broader term? A.

50. Information Leteracy

Which of the following would be the best way to get to a list of encyclopedias that are available on the Web? A. Look at the Library of Congress Web site. B. Visit the Internet Public Library. C. Search the library catalog. D. Search a periodical database.

51. math

If "today is Monday" is true and "It is May 5th is false, which of the following is false? 1 - Today is Monday and it is not May 5th. 2 - If today is Monday, then it is May 5th. 3 - Today is not Monday only if it is May 5th. 4. Today is not Monday or it is

52. Biology

Why DNA is more stable than RNA?

53. English/Essay

Could someone tell me if I have done my essay the right way? Please its due Monday?? "The internet is a much easier resource for students than a library” The first reason the internet is a much easier resource for students than a library, you can Find

54. THEORY OF MACHINE

The principal stresses at a certain point in a strained material are 150 MPa and 48 Mpa both tensile. Find normal and tangential stresses on a plane inclined at 20 degree with the major principal plane.

55. physics

A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of

56. Earth science

What is the primary cause of crustal movement?

57. math

If "today is Monday" is true and "It is May 5th is false, which of the following is false? 1 - Today is Monday and it is not May 5th. 2 - If today is Monday, then it is May 5th. 3 - Today is not Monday only if it is May 5th. 4. Today is not Monday or it is

Two charges are placed on the x axis. One of the charges (q1 = +7.91C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =

59. assembler language

write an assembly language subordinate count according to these specs: accepts a pointer to an array or signed words in register X. Accepts a word value in register Y, which indicates the number of array elementsl Returns the number (i.e. count) of nonzero

1.My family went to starbucks. My daughter and myself ordered drinks that were the same price. My son's drink was 5.00 dollars more than my drink. The total bill was \$18.50. How much was each drink? 2.There were candies on the table. Andy grabbed 50% of

61. physics

a 10kg toy mootorized boat uses 2.0 W of power, has a constant accel from rest and reaches a certain speed in 10 s on a horizontal surface. what was the final speed ?

62. math

Daniel will randomly pick a marble from a bag that has three red marbles and six white. If he does not put any marble back into the bag and picks a new one each time, what is the probability that both marbles will be white. If he puts the first marble back

63. geometry

Write an equation of a circle with diameter AB.A(0,0),B(-6,8)

64. information Leteracy

To determine the best place to begin your online research, you should first A. identify keywords and search terms. B. settle on a single, concise search term or phrase. C. choose several verbs and modifiers to help define your search. D. formulate your

65. information Leteracy

To critically evaluate the qualifications of an author on a topic, carefully consider all of the following except the A. number and type of awards the author has received. B. author's educational background. C. other articles the author has written. D.

66. Earth Science

1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology

67. algebra

a car tire has a diameter of 3.5ft. How many revoulutions does each tire make if the car travelled 400ft ?

68. difficult chemistry

Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that excess kl and hcl were added. Who helps me

69. chemistryy

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 4.548 x 10^-10m. Determine the frequency (in hz) of the interacting photon. i got

70. geometry

What do you do to figure out space in irregular shapes?

71. Chemistry

The solubility of bismuth iodide (BiI3) in water is 8.491 x 10-3 M. Calculate the value of the solubility product. The dissolution products are Bi3+(aq) and I−(aq)

72. math (double checking)

I've posted this question before but I forgot to say that I was dealing with polynomial inequalities (not sure if that makes a difference) The question is: Solve the following polynomial inequalities. (9 marks) 4x - 5 ≤ 2(x - 7) x^3 - 5x^2 + 2x ≥ -8

73. Algebra 2

Two days ago "Steve" helped me with this problem. I am grateful to him. I didn't get it and asked for him to help me again. He showed it to me again, but I needed more steps shown. Then I think he was finished for tutoring for the day before I could see it

74. physics

an electron with a mass of 9.11 x 10^-31 kg is accelerated from rest across a set of 150 V and are separated by 0.80 cm. a) determine the kinetic energy of the electron after it crosses between the plates.( ans 2.4 * 10^-17 j) b) determine the final speed

75. physics

Two charges are placed on the x axis. One of the charges (q1 = +7.91C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =

76. med. terminology

i am having some trouble, i have found some of the mistake but seem like i cant finf the rest: CHIEF COMPLAINT: This 53-year-old man visited the outpatient clinic for dyspnea and recurrent coughing. HISTORY OF PRESENT ILLNESS: This patient has a long

77. Math

Hi. How to you solve 6.3*10^-4=4x^3 on a calculator? What buttons or functions do you press on the calculator to solve this

78. help

4x + 2 = x + 8. (1 point) x = 4 x = 3 x = 2 x = 1 i need help...

79. math

Five boys and seven girls in a history class will go on a field trip during the Easter vacation. They make a committee of three members to prepare for the trip. What is the probability that this committee will consist of three boys? What is the probability

80. chemistry

A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2

81. Chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 0.468×10−10 m. Determine the frequency (in hz) of the interacting photon.

82. science

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of . Determine the frequency (in hz) of the interacting photon.

83. math

1. How could you use the product of 1/2 and 200 to find the product of 1/8 of 200? 2. How could you use the product of 1/3 of 300 to find the product of 1/6 and 300?

84. math

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20

85. science

The solubility of bismuth iodide in water is 4.291 x 10-3 M. Calculate the value of the solubility product. The dissolution products are and

86. science

Do you expect the solubility of in 0.1 M to be equal to, greater than, or less than that of in water? Explain

87. chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 5.908×10−10 m. Determine the frequency (in hz) of the interacting photon.

88. chemistry

The solubility of bismuth iodide (BiI3) in water is 9.491 x 10-3 M. Calculate the value of the solubility product. The dissolution products are Bi3+(aq) and I−(aq)

89. CHEMISTRY

Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers (carriers/cm3) at room temperature in this material. Calculate the absorption edge of this material. Express your answer as a wavenumber in units

90. physics

In what height the gravitational force with which earth exerts on any object in distance is 5 times smaller than the gravitational force,with which earth exerts in the same object when that object is on earth?

91. Chemistry

Silicon (50 g) has been doped with 27 mg of antimony (Sb). Determine the concentration of free charge carriers (carriers/cm3) at room temperature in this material. Calculate the absorption edge of this material. Express your answer as a wavenumber in units

92. social studies

i have to make a slideshow on urbanization in africa and i need help

93. Math

Given the following question: -3e^(-2*t)*sin(pi*t + pi/3)] How do I find a) period b) frequency c) time (phase) shift d) time constant

94. physics

In what height the gravitational force with which earth exerts on any object in distance is 5 times smaller than the gravitational force,with which earth exerts in the same object when that object is on earth?

95. Chemistry

The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The x-ray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first

96. physics

A 3.40 kg block is pushed along the ceiling with an constant applied force of F = 82.0 N that acts at an angle θ = 50° with the horizontal, as in the figure below. The block accelerates to the right at 5.80 m/s2. Determine the coefficient of kinetic

where do you put a comma in have you chosen what you are going to wear on opening night?

98. Health

How does society define health

99. THEORY OF MACHINE

A piece of material subjected to three mutually perpendicular stresses of 70, 56 and 84 MPa. If E= 200 Gpa, Poissions ratio= 0.28 Determine 1) Principal strains 2) Shear modulus 3) Bulk modulus.

100. chemistry

To what volume should you dilute 50.5 of a 4.60 solution so that 30.0 of the diluted solution contains 3.30 of KI?

101. To rajesh jain

Do not post any question more than once. Currently, I don't see any physics tutors online. Please be patient and wait for them to find what you have already posted.

102. Earth Science

Quartz is made up of___________ a.)silicon and oxygen b.)iron and oxygen c.)silicon and carbon d.)iron and silicon

103. Earth science

Which of the following is MOST similar between the inner and outer core of the Earth? a.)composition b.)pressure c.)movement d.)density

104. Earth science

The inner core of the Earth is solid because of increased___________ a.)density and composition b.)density and temperature c.)temperature and pressure d.)pressure and density

105. Earth Science

Seismic waves move faster through which of the following media? a.) water b.) steel c.) oxygen d.) oil Please answer my study guide is due Monday and the teacher hasn't gone over this I looked through my notes and everything. It would really help if you

106. math

The ratio of guests under 15 to the total number of guests is 1:2. How many guests are under 15? The answer is five. Am I correct. Table Age Range Guest Under 15 X 15-40 6 41-65 3 Over 65 2

107. math

help me solve: find x in cos^2x - 2 sinx cosx - sin^2x = 0

108. Statistics

Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it representa this level: heights of 40 high school students.

109. biology honors

In which tissue of plants are new cells created? A.dermal B.vascular C.ground D.meristematic

110. science

The rate constants for a first order decay reaction are found to be:

111. science

Estimate the Cl-As-F bond angle

112. biology honors

In which tissue of plants are new cells created? A.dermal B.vascular C.ground D.meristematic

113. science

What is the pH of 50 mL of a 0.2M glycolic acid aqueous solution after adding 5 mL of 0.25 M KOH? The pKa of glycolic acis is 3.83 at 25 .

114. science

Calculate the surface energy of the (100) surface of niobium. The enthalpy of atomization of niobium is 745 kJ/mole. Express your answer in units of J/cm2.

115. Math

Find the equation of straigt line whose one cordinate is (2,3) and slope is 2

116. chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon. Please help!

117. science

A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2

118. chemistry

At temperatures above 930 ∘C, PbO reduces PbS to form metallic lead (Pb). The byproduct of the reaction is SO2. Calculate the amount of lead produced (in kg) when a reactor is charged with 207.0 kg of PbS and 310 kg of PbO. Please help!!!

119. chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 1.828×10−10 m. Determine the frequency (in hz) of the interacting photon.

120. chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon.

121. science

Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation

122. Maths

For logarithms, if asked to write in simplest form, is it better to write the argument in radical form or exponential form.

123. Information Leteracy

When books are arranged in correct order on the shelves by call number, which of the following call numbers will be first? A. DA 546 .L74 1986 B. D 839 .G3 1987 C. D 839 .G42 2004 D. DE 82 .A49 2006

124. math

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20

125. Information leteracy

The Atlas of World Religions is an example of which of the following reference sources? A. General almanac B. Historical atlas C. Subject-specific atlas D. General world atlas

126. Chemistry

(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of

127. Chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 3.188×10−10 m. Determine the frequency (in hz) of the interacting photon.

128. Statistics

Which of the following statements is not true about samples that can be treated as matched pairs data? I. Data collected on these samples is analyzed by calculating the differences between paired observations and using that data in one sample tests. II.

129. chemistry

The vacancy fraction of a particular metal is found to double as the temperature of the metal is increased from 700 degrees C to 850 degrees C. Calculate the enthalpy of vacancy formation for this metal. Express your answer in units of eV.

130. Chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 0.468×10−10 m. Determine the frequency (in hz) of the interacting photon.

131. Math

Given the following question: -3e^(-2*t)*sin(pi*t pi/3)] How do I find a) period b) frequency c) time (phase) shift d) time constant

132. Chemistry

A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2

133. difficult chemistry

502g sample of dry cac03 and cacl2 mixture was dissolved in 25ml of 0.925 M HCL solution. What was cacl2 percentage in original sample if 22ml of 0.09312 m NAOH was used to titrated excess HCL? The answer 29.89% Who helps me

134. physics

A box slides down a 26° ramp with an acceleration of 1.19 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.μk =

135. Health

What is the correlation on how society defines health and how they pursue health

136. THEORY OF MACHINE

A steel bar 10 m long and 10 cm * 2.5 cm in section. It is subjected to axial pull of 250 KN. Determine the intensities of normal and tangential stresses on a plane section at 60 degree to the longitudinal axis.

137. THEORY OF MACHINE

A mild steel rod is 150 cm long. The portion 80 cm long is 22 mm diameter and the remaining length is 20 mm diameter. If the total change in length is 0.072 cm, Determine the changes of each part in 1) Length, 2) Diameter, 3) Volume. Take poissions ratio=

138. ENGLISH

I Need Someone to check my essay for me and give me some input please.

139. THEORY OF MACHINE

A steel block 200 mm * 20 mm* 20 mm is subjected to a tensile force of 40 KN in the direction of its length. Determine the change in volume, if E is 205 KN/mm² poissions ratio = 0.3

I,m writing a paragraph about using resources responsibly.And I have to use three vocabulary words adverse,generate,apparatus. And this is what I wrote. The energy to the house I live in has had a adverse affect.Do to the apparatus not getting enough

141. chemistry

To what volume should you dilute 50.5 of a 4.60 solution so that 30.0 of the diluted solution contains 3.30 of

142. physics

an object's acceleration is given by the function a= 2/v^2, determine an expression for the velocity of the object as a function of time. (at t= 0, v=0)

143. physics

an object's acceleration is given by the function a= 2/v^2, determine an expression for the velocity of the object as a function of time. (at t= 0, v=0)

144. Math

Could someone pls. help me out on the following question: find the producers surplus (to the nearest dollar ) at a price level of p=\$26 for the price-supply equation p = s(x)= 5ln(x+1) . An early response would be greatly appreciated pls. Thank you.

145. Algebra

How do you factor this problem x^2 + 4x = 4

146. English

This sentence has an error but I'm not sure if this is correct. His father and uncle were theirselves great travelers. Is it suppose to be: His father and uncle were themselves great travelers.

147. Algebra

You are right I was suppose to factor the perfect squares for x^2 + 4x + 4 Thanks for you help.

148. college algebra

What are the zeroes of f(x) = 2x^2 -3x + 1

149. Information Literacy

Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 B. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 C. E88 G2512 S57 1998, E88 G62

150. math

there are 10 beads in a jar 5 are green 3 brown and 2 red if joseph randomly picks one bead three times what is the probability that all three of the beads will be brown

151. Algebra

find the slope -intercept form for 2x+6y=11

152. chemistry

what is the ph of a soln that contain 0.01M HNO3 and 0.1M CH3COOH. for acetic acid,ka=1.8*10-5

153. language arts

whats a sentence for lukewarm that includes a synonym for the word to help provide a contect clue?

154. math

5/6 x 10/23 how do i find the simplest form. thank you

155. Math Urgent 1 tiny question

how would you write (11/20)^-6 as a single power... don't evaluate.

156. Math

Hi. How to you solve 6.3*10^-4=4x^3 on a calculator? What buttons or functions do you press on the calculator to solve this

157. algebra

Find the rate of change for the equation 5x+3y=-2

158. algebra

write an equation in slope intercept form ha an x-intercept of 6 and y intercept of 3

159. maths

find factors of 17^100 + 32^201

161. science

What is the degree of polymerization, n, of polypropylene with a molecular weight of 600,000 g/mole?

162. chemistry

(f) How much oil will dissolve in the surfactant-water solution if the concentration of surfactant falls in region A?

163. chemistry

(b) Calculate the absorption edge of this material. Express your answer as a wavenumber in units of inverse meters.

164. chemistry

The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The x-ray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first

165. English

Harmatan weather

166. information leteracy

Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 B. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, E88 G62 L166 1995 C. E88 G62 D225, E88 G62 L166

168. science

8. Which of the following related subjects is listed as a broader term? A. Palynology B. Phytogeography C. Paleontology D. Paleoclimatology

169. Math

A 100m wire weighs 1.75kg. How wide is the wire?

170. science

Do you expect the solubility of in 0.1 M to be equal to, greater than, or less than that of in water? Explain

171. information leteracy

locate the Web site for the school's accrediting body, which is listed by the U.S. Department of Education as a nationally recognized accrediting agency.

172. Information leteracy

Which one of the following services is provided through the Ask-a-Librarian feature in the Penn Foster Library? A. A full list of materials you’ll need for your research B. An analysis of an issue presented in your course C. A historical date or the

173. 1/90

What will be the next. Result of wining machine 85 20 34 65 90-78 18 83 27 17

174. Information Leteracy

Government documents in a library are classified according to which of the following schemes? A. Superintendent of Documents B. Dewey Decimal C. Library of Congress D. Government Printing Office

175. math

6y - 12 = -2x

176. math

Write the equation in standard form, 6y - 12 = -2x

177. Math

For each geometric series, calculate t6 and S6. a) 6 + 30 + 150 ... So I'm not exactly looking for an answer to this question but I was wondering why they want you to find t6 too? Would finding out t6 (via general formula) help in any way when finding S6?

178. chemistry

(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of

179. MATH HELP!!!!!!

how would I solve the problem, 10=2/7n+4 ? Please I need help!!!!!!!!!!!!!!!!!!!

180. MATH HELP!!!!!!

how would I solve the problem, 10=2/7n+4 ? Please I need help!!!!!!!!!!!!!!!!!!!

181. balaji pharmacy clg ,science

why do we take 85ml of hcl for 1lit solvent according to I.P. while it is 43.02ml when it is calculated

182. MATH

How would i do 11w-9-7w=15 ?

183. Geology

There is also a graph i can't move it. Building Isochrons and Determining the Ages of Three Rocks Page 15 of 17 For each of the three rocks listed below follow these steps to determine the rock's age of formation. 1. Prepare an isochron by plotting the

184. Biology

What is the case for that sucrose is said to be non-reducing sugar?

185. Chemistry

At temperatures above 930 C, reduces to form metallic lead . The byproduct of the reaction is . Calculate the amount of lead produced (in kg) when a reactor is charged with 953.0 kg of and 1430 kg of .

186. MATH

how do i do 8t+5=6t+1 ?

187. math

How do I solve 5/10=x/6 for an eqivalent fraction