# Questions Asked onJanuary 26, 2013

1. ## General Chemestry

A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0 M chromium(II) ion solution and another electrode composed of gold in a 1.0 M gold(III) ion solution, connected by a salt bridge. Calculate the standard potential for this

2. ## AP Chemistry

Water is being electrolysed in the presence of a non-reactive electrolyte under standard conditions. If 2.5 amperes of current flows through the circuit for 13.6 minutes at 25 degrees celsius and 1 atmosphere, what volume of hydrogen gas is produced?

3. ## Math

How do I solve 14 T 1,000 lb + 2 T 1,000 lb ?

4. ## Vector Calculus

An airplane is traveling in the direction 20degrees west of north at 700 km/hr. Find the component form of velocity of the airplane assuming that the positive x-axis represents due east and the positive y-axis represents due north.

5. ## Chemistry

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.

6. ## Statistics

A population has a mean of   30 and a standard deviation of   5. a. If 5 points were added to every score in the population, what would be the new values for the mean and standard deviation? b. If every score in the population were multiplied by 3 what

7. ## chemistry

Assignment 1 Question Consider a monohydrogen phosphate ( HPO42-) and dihydrogen phosphate (H2PO4-) buffer solution. [HPO42-] = 0.063M [H2PO4-] = 0.10M What happens when you add 1.0 ml of 0.10 M HCl to the a 99ml solution? What would the pH of the solution

8. ## maths

A milk tanker cylinderical in shape having a diameter of 2m and height 4.2m supplies milk to the two booths in the ratio3:2 .One of the milk booths having arectangular base area of 3.96 sq. m and the other has a cylinderical vessel having diameter of 2m.

9. ## Legal Writing

I am asked to write and internal office memo to my supervising attorney that advises of the results of my research on a given topic and applies the law to the facts in my case. I have attached the exercise along with my draft internal memo. Can someone

10. ## Physics

A red ball is thrown down with an initial speed of 1.3 m/s from a height of 28.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.7 m/s, from a height of 0.8 meters above the

11. ## physics

A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.50 cm into the river. What is the weight of the truck?

12. ## PHYSICS

Two wires have the same cross-sectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)-1 and a resistivity of 5.00 x 10-7Ω m. For the second, the temperature

13. ## physics

Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 24.0{\rm m}/{\rm s} as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the

14. ## math

The English Alphabet has 20 letters more than one−fourth the number of letters in the Greek Alphabet. The English Alphabet has 26 letters. Which of the following equations would you use to find the number of letters, g, in the Greek Alphabet?

15. ## Math 9 algebra

A mechanic charges $70 an hour plus the cost of parts to repair a vehicle. The parts cost$215 for the repair on Tamara's car. A) write an expression for the total cost, C, of repairing Tamara's car for any numbers of hours, n. B) use the expression you

16. ## French

I'm stuck on these two questions regarding indirect object pronouns. for the first question would it be.. je s 'achète des gants.(à ta mère et à toi, Célia). For the second question: would it be.. Célia se achète un pantalon. (à moi)

17. ## physics

(a) Calculate the mass flow rate (in grams per second) of blood (ρ = 1.0 g/cm3) in an aorta with a cross-sectional area of 2.0 cm2 if the flow speed is 35 cm/s. g/s (b) Assume that the aorta branches to form a large number of capillaries with a combined

18. ## Physics

2 spheres of radii 10cm and 20cm contains charges 10microcoulomb and 20 micro coulomb respectively.they are separated by a distance 100cm.Where will the electric field be zero?

19. ## age problem (math)

Nila is now x years old. 3 years ago, her brother ricky was twice as old as she. Write ricky's age 10 years from now in terms of x. (with solution pls... thanks...)

asked by HELP HELP HELP MNHS

Fred and Wilma are neighbors. Every morning Fred walks his dog spike by Wilma's house, and almost every morning Spike poops in Wilma's yard. A city ordinance requires that dog oners must keep their dogs on a leash, but Fred never uses a leash while walking

21. ## chemistry

a sample of sulphuric acid is 95.7% by mass and has a density of 1.84g/cubic cm.calculate the mass of pure H2SO4 in a 2.00L bottle and volume of acid that contain 200g of pure H2SO4.

22. ## Calculus

Determine the line through which the planes in each pair intersect. a) 3x+2y+5z=4 4x-3y+z=-1

23. ## Physics

A long, thin rod (length = 4.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +5.0 µC point charge is fixed to one end of the rod, while a -5.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a

31. ## physics

A batted baseball leaves the bat at an angle of 26.0^\circ above the horizontal and is caught by an outfielder 355{\rm ft} from home plate at the same height from which it left the bat. What was the initial speed of the ball? How high does the ball rise

32. ## physics

A flight attendant pulls her 66 N flight bag a distance of 318 m along a level airport floor at a constant velocity. The force she exerts is 43 N at an angle of 52° above the horizontal. (a) Find the work she does on the flight bag. (b) Find the work done

33. ## Physics

A light plane attains an airspeed of 491 km/h. The pilot sets out for a destination 785 km due north but discovers that the plane must be headed 20.5° east of due north to fly there directly. The plane arrives in 2.25 h. What was the magnitude of the wind

40. ## physics

The total cross-sectional area of the load-bearing calcified portion of the two forearm bones (radius and ulna) is approximately 2.0 cm2. During a car crash, the forearm is slammed against the dashboard. The arm comes to rest from an initial speed of 80

41. ## algebar

A rectangle is 5 times as long as it is wide. If the area is 125 square feet, find its perimeter.

42. ## physics

In a circus performance, a monkey on a sled is given an initial speed of 4.0 m/s up a 32° incline. The combined mass of the monkey and the sled is 19.1 kg, and the coefficient of kinetic friction between the sled and the incline is 0.20. How far up the

43. ## BIOLOGY

What is the majority of the mass of the heart composed of? a. Endocardium b. Myocardium c. Pericardium d. Endothelium

44. ## physics

Water flows over a section of a waterfall at the rate of 5.1 104 kg/s and falls 40 m. How much power is generated by the falling water? answer in Watts thanks

45. ## physics

A spring has a force constant of 410.0 N/m. (a) Determine the potential energy stored in the spring when the spring is stretched 4.13 cm from equilibrium. (b) Determine the potential energy stored in the spring when the spring is stretched 3.06 cm from

46. ## pHYSICS

Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.99 A. When the resistors are connected in parallel to the battery, the

47. ## physics

What speed would a fly with a mass of 0.61 g need in order to have the same kinetic energy as a 1250 kg automobile traveling at a speed of 11 m/s?

48. ## Physics

A 7.94 nC charge is located 1.75 m from a 4.18 nC point charge. Find the magnitude of the electrostatic force that one charge exerts on the other.

49. ## Chemistry

My Chem professor is out for the weekend and I'm confused about what the question is asking or the equations needed... A 10.0-g block of pure nickel (Cp = 0.445 J/g-°C) is brought to each of the temperatures below. A sealed beaker containing 15.0 g water

50. ## math30

1. Your city has 700 000 households, and the probability that a household has exactly one vehicle is 17/23. a) Determine the number of households that can be expected to have exactly one vehicle.

51. ## physics

A piece of pipe has an outer radius of 4.6 cm, an inner radius of 2.8 cm, and length of 35 cm. What is the mass of this pipe? Assume its density is 8.3 g/cm3. Answer in units of k

52. ## Math

A room is 45 m x 15 m. What is the least number of rectangle tiles required to pave the floor of the room, if each tile is 50 cm x 1m?

71. ## History

Fill in the blanks. Under the Mississippi compromise, any new states formed west of the Mississippi river and north of the Missouri's southern border line were required to be __________.

72. ## Speech 09

I had to interview someone in my class and write speech about them. I need help on how to start my speech. How to introduce the person. Are there any examples you can give me so I would read and then write my speech. Please help!!!!!

Help me with a small business idea.

74. ## Physics

If an automobile engine delivers 45.2 hp of power, how much time will it take for the engine to do 5.40 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.) in seconds

75. ## chemistry

What volume of 9.0Molarity of H2SO4 is required to react with 20.0g of NaOH?

76. ## Math

It took Esteban 1 hour and a half to complete his math problems for homework. He spent 3 to 5 minutes working each problem. Which is a reasonable number of problems that Esteban completed for homework? A.10 B.12 C.15 D.20 D? Shaquille O' Neal height

77. ## real number

How many positive factors does 62x(63^3+63^2+63+1)+1 have? (with solution pls... thanks...)

asked by HELP HELP HELP MNHS
78. ## math

13. You can walk there in 20 minutes or less.

79. ## math

3 pumps, working 6 hours a day, can empy a water tank in 2 days. How many hours a day must 9 pumps work to empty the same tank in 1 day?

80. ## Science

Write on Newton law of cooling and cooling collision.

81. ## Math

(x^2+y^2)^2=4(x^2-y^2) Equation of a lemniscate curve

82. ## Chemistry

Using oxidation numbers, explain why this reaction is not a redox reaction? CaCo3 --------> CaO + Co2 Please help.

83. ## french

im stuck on indirect object pronouns. i don't know if for example, Je______ achète des baskets. (à mes cousins) if i have to use the verb aller? would it be Je vais leur?

84. ## Math

The Americans with disabilities act requires that wheelchair ramps have a slope no greater than 1/12 what is the minimum horizontal length a 2 foot high ramp can have ?

A radioactive isotope, used in the agricultural industry has a half life of 8 days. On application, the radiation is emitted is measured at 12500 counts per sec (cps). If the area that it is applied to cannot be used until the radiation strength is less

86. ## Maths

if in a triangle ABC m angle A=π/2, then value of cos2 A + cos2 B + cos2 C =?

87. ## math

Marty ate 1/4 of his pizza and Luis ate 1/3 of his pizza. Marty ate more pizza than Luis. Is that possible? Explain.

88. ## chemistry

suppose u r given a conc soln of hcl which is known to be 37% hcl & has a soln density of 1.19g/ml. What is the molarity and molality of hcl in this soln

89. ## Chemistry

The rate of a first-order reaction is followed by spectroscopy, monitoring the absorption of a colored reactant at 520 nm . The reaction occurs in a 1.29-cm sample cell, and the only colored species in the reaction has an extinction coefficient of 5700

90. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the lines x-3y+8=0 and y=3x. Please Help me solve this. Explain it to me slowly cause I am not really good with this

91. ## physics

While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.20 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

92. ## physics

A person lifts a 4.6 kg cement block a vertical distance of 1.43 m and then carries the block horizontally a distance of 10.50 m. (a) How much work is done by the person in the process? (b) How much work is done by gravity in the process?

93. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

94. ## Physics

Forces of 11.3N north, 19.1N east, and 14.5N south are simultaneously applied to a 4.12kg mass as it rests on an air table. What is the magnitude of its acceleration? What is the direction of the acceleration in degrees? (Take east to be 0 degrees and

95. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

96. ## Math

((4sin(atan(4/3))-4sin(0)))-(-3cos(atan(4/3))-(-3cos(0)))+((-3cos(pi/2)-(-3cos(atan(4/3))))-(4sin(pi/2)-4sin(atan(4/3))))+((-3cos(4pi/5)-(-3cos(pi/2)))-(4sin(4pi/5)-4sin(pi/2)))

97. ## math

USING FORMULAR METHOD SOLVE D EQUATION(M-3)²=121

98. ## Math

In this diagram, one person is standing at point A, one person is at point B, and both are looking at a helicopter at point C. The helicopter is 1000 feet above the ground on which the two people are standing. A. If the angle of elevation at point A is 60

99. ## Math

Give the domain of the following functions. Give your answer in interval notation. a) f(x)= 5x-2/x^2-5x+6 and b) square root of 5-2x

100. ## marketing

The economic environment a.of an individual country has little effect on other countries. b. refers to the application of science to convert resources to output. c. includes changes in interest rates and inflation. has little impact on an organization's

101. ## marketing

Regarding the current legal environment facing U.S. marketing managers: a. state and local laws vary but contain important regulations. b. the focus has shifted from let the buyer beware to let the seller beware. c. product safety is now controlled. d.

102. ## marketing

Few people in Europe diet. So the same soft drink that PepsiCo sells in the U.S. under the brand name of Diet Pepsi is sold in England under the brand name of Pepsi MAX. This is an example of which part of the external market environment? a. Competitive b.

103. ## marketing

When a local bank in Kansas City makes loans to its small business customers, it charges them an interest rate for borrowing money. Interest rates are part of the ____________ environment. a. cultural and social b. economic c. legal d. political e.

104. ## Math

Find the matrix A such that 1 0 −1 3 A = −1 −8 2 11 . Hint: Let A = a b c d A=

105. ## algebra

Determine whether or not the relation is a function. (-3,6), (-2,7, (-1,8), (0,9)

106. ## science

Lipids: Not a polymer because _ __x's energy than carbs Saturated= Unsaturated= Nucleic Acids: RNA= DNA= Carbohydrates: Building blockks

107. ## Chemistry

Air in the vicinity of a local power station contains 8.8x10^-4 gm^-3 SO2. What volume of 0.001moldm^-3 Iodine solution would be required to react with a solution obtained from 200dm^3 of contaminated air? The equation given is SO2 + I2 + 2H2O ==> H2SO4 +

108. ## Algebra 2 ..........

Solve for x. 1/2(x-2)^3+1=0 Also please teach me how to factor cubic polynomials.

109. ## Biochemistry, Biology, Chemistry

An enzyme works on two substrates, S1 and S2. Its Km for S1 is 100mM and its Km for S2 is 10mM. Based on this information, answer the following questions: 1. For a given [E] will it have a higher Vmax for S1 or S2? Explain your answer 2. Is S1 or S2 a

110. ## ANT101: Introduction to Cultural Anthropology (ACS

The Demographic Transition Model: (Points : 1) depicts how populations change over time. is based on the historical experience of the Third World. predicts the world’s population in the year 2002. supports the overpopulation perspective.

111. ## fractions

what is 1/2, 3/8and 1/4 from least to greatest

112. ## Calculus

The height (in feet) at time t (in seconds) of a small weight oscillating at the end of a spring is given below. h(t) = 0.2 cos(2t) (a) Calculate the weight's average velocity over the time intervals [1, 2] and [5, 7].

Sole this equation 5x+9=3x+41 what does x=

114. ## Physics

If Jenn walks at a speed of 1.75 m/s for a total of 3.0 minutes, how far has she travelled?

5x+9=3x+37 x=

116. ## physics

What is an example of an object with great momentum? Why does it have great momentum?

117. ## Algebra 2 ..........

Solve for x. 1/2(x-2)^3+1=0 Also please teach me how to factor cubic polynomials.

118. ## Algebra 2 ..........BOBPURSLEY

SO IF Y=0 what would x be on the graph. Please.. i do not get this...

119. ## art

do you know name of this picture? it is dragon flying and kind of holding the flag which is of united states and it has six flags. and up it has curve. it is symbol please help me.

120. ## math

in a mixture of water and 1/4 is sand.write down the ratio of water to sand

121. ## physics

A vector has a magnitude of 18.0 cm and makes an angle of 103.0° with the positive x-axis.

122. ## science,chemistry

constract the neutralisation rxn of calos antacid and stomach acid,and balance it?

12x0=

124. ## Physics

When speaker A is working the sound intensity at a particular location is 85 dB. When speaker B is working (without speaker A), it is 80 dB. What will it be if both speakers are working together?

125. ## Physics

a tuning fork of frequency 500 Hz is rotating on the edge of a disk of radius 1.2 meters. (a) If the disk turns at a rate of 40 rev/min, what are the maximum and minimum frequencies heard by the listener? (b) To what positions of the tuning fork do these

126. ## math30

1.To play a game, a die is rolled to see who plays first. Four players are going to play the game. What is the probability that at least two people roll the same number? Express your answer to the nearest tenth of one percent

127. ## Chemistry help

Write a descriptive text and a word equation on how silicon is extracted from earth's crust' .

128. ## chemistry

What volume of 0.010M silver nitrate will exactly react with 20ml of 0.0080M socium chloride solution?

138. ## accounting

Can uot help me with journal entries