# Questions Asked onMarch 31, 2010

1. ## Physics 1 (Calc Based)

At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s? Ans: Theta final=4.5 rad

2. ## Physics

A 70kg man jumps 1.00 meters down onto a concrete walkway. His downward motion stops in 0.02 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones? a. 15 500N b. 7 010N c. 4 900N d. 3 500N How do you solve this

3. ## math

A plane flying a straight course observes a mountain at a bearing of 32.6° to the right of its course. At that time the plane is 6 km from the mountain. A short time later, the bearing to the mountain becomes 42.6°. How far is the plane from the mountain

4. ## chemistry

A gas absorbs 45 kJ of heat and does 29 kJ of work. Calculate the change in energy. The answer is 16 kJ, but I don't understand why. If a gas absorbs heat and does 29 kJ of work. Wouldn't they both be positive? Change in energy = q + w 45 kJ + 29 kJ = 74

5. ## math/calc

The hypotenuse of a right triangle has one end at the origin and one end on the curve y+x^2e^(-3x), with x > or = 0. One of the other two sides is on the x-asis, the other side is parallel to the y-axis. Find the maximum area of such a triangle. At what

6. ## Math

Three forces with magnitudes of 70 pounds, 40 pounds, and 60 pounds act on an object at angles of -30 degrees, 45 degrees, and 135 degrees, respectively, with the positive x-axis. Find the direction and manitude of the resultant of these forces. Please

7. ## math

The perimeter of the small square is one-third the perimeter of the large square. What are the side lengths of the squares? small square side = x large square side = x + 2

8. ## trig/math

Two ships leave a harbor together traveling on courses that have an angle of 124° between them. If they each travel 511 miles, how far apart are they (to the nearest mile)?

9. ## Physics

At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s? Ans: Theta final=4.5 rad

10. ## chemistry

1. Chlorobenzene, C6H5Cl, is used in the production of chemicals such as aspirin and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6, with chlorine gas according to the following BALANCED equation. C6H6 (l) + Cl2 (g)

11. ## physics help

Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio (assume it to be an isotropic source) and notices an echo from the cliff. She claps her hands and the echo takes 2.6 s to return. (a) Given that the speed of

12. ## chemistry

HOF-->HF + 1/2O2(oxygen) Half life: 30 minutes If the partial pressure of HOF in a 1.00 L flask is initially 100 mm Hg at 25C, what is the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes?

13. ## math

1-show that 1-x/2 is the tangent line approximation to 1/ sqrt of 1+x near x=0 2-what is the local linearization of e^x^2 near x=1 3-find the tnagent line approximation of 1/x near x=1

14. ## math

Suppose that an object attached to a coiled spring is pulled down a distance of 5 inches from its rest position and then released. If the time for one oscillation is 3 seconds, write and equation that relates the displacement d of the object from its rest

15. ## algebra 2

When inflation causes the price of an item to increase the new cost C and the original cost c are related by the formula C=c(1+r)^n, where r is the rate of inflation per year as a decimal and n is the number of years. What would be the price of a \$4.99

16. ## Math 157

What are the odds in favor of drawing a spade and a heart without replacement from an ordinary deck of 52 playing cards?

17. ## stats

A random sample of 40 men drank an average of 20 cups of coffee per week during examination final, with the population standard deviation equal to 6 cups. A lower limit of an approximate 95% confidence interval the population average cup of coffee is (1)

18. ## 152

Ka for hypochlorous acid,HCLO, IS 3.0*10^-8. Calculate the pH after 10.0,20.0,30.0, and 40.0mL OF 0.100M NaOH have been added to 40.0mL of 0.100M HCLO..

19. ## Chemistry

Which diffuses faster, the bad smell from a cat-pan due to ammonia or an expensive French perfume with an average molecular weight of 170 g/mol? How much fast does the fast one diffuse?

20. ## chemistry

How many moles of SO2 are required to make 125 mol CS2 How many moles of carbon monoxide form at the same time that 0.255 mol CS2 forms? THANK YOU

21. ## chm

What is the pH of the solution obtained by mixing 30.00mL OF 0.250M HCL AND 30.00mL OF 0.125M NaOH?

22. ## chemistry

what is nitrolim and is uses?

23. ## Economic

1. The principle that states that the more you have of something, the less satisfaction you will get from an additional unit is the a. law of demand. c. law of equilibrium. b. law of diminishing marginal utility. d. price elasticity. 2. Demand for one

Use the law of cosines to find the angle Q between the given vectors. v = 3i + j w = 2i - j

25. ## CRT/205

CRITICAL THINKING CHECKPOINT 2

26. ## marketing

true or false? without the marketing concept, a business will develop a product or service and then decide how to market the product

27. ## college chemistry

CH4 + 2 Cl2--> CH2Cl2 + 2HCl Cl-Cl bond energy: 242 kj/mole 1. Calculate the amount of energy (Joules) needed to break a single Cl-Cl bond. 2. Calculate the longest wavelength of light (meters)that can supply the energy per photon necessary to break the

28. ## college chemistry

How do you calculate delta[S2O8 2-] in iodine clock reaction?

29. ## physics

The air pressure variations in a sound wave cause the eardrum to vibrate. Find the maximum velocity and acceleration of the eardrum for vibrations of amplitude 1.5 10-8 m at a frequency of 19.0 Hz.Repeat (b) for the same amplitude but a frequency of 19.0

30. ## physics

A shot-putter moves his arm and the 7.0 kg shot through a distance of 1 meters iving the shot a velocity of 10 m/s from rest. Find the average force exerted on the shot during this time how do you solve this problem. Is this question related to Kinetic

31. ## chemistry

Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water. 3 CaCO3(s) + 2 H3PO4(aq) Ca3(PO4)2(aq) + 3 CO2(g) + 3 H2O(l) How many grams of phosphoric acid react with excess calcium carbonate to produce 3.29 g

32. ## college calculus

1) each side of a square is increasing at a rate of 6cm/s. At what rate is the area of the square is 16 cm^2? 2)the radius of a sphere is increasing at a rate of 4mm/s.How fast is the volume increasing when the diameter is 80mm? 3)A particle moves along

33. ## Economic

1.According to the law of demand, when the price of an item goes up, the quantity demanded a. stays at the same level. c. falls. b. rises. d. adjusts 2. According to the law of supply, higher prices prompt producers to a. increase demand. c. produce less.

34. ## Chem

What mass of glycerin (C3H8O3), a nonelectrolyte, must be dissolved in 216.2 g water to give a solution with a freezing point of -1.62 °C?

35. ## math

A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system is 8/pi cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.

36. ## physics

The label on a candy bar says 470 Calories.Assuming a typical efficiency for energy use by the body, if a 74 kg person were to use the energy in this candy bar to climb stairs, how high could she go?

37. ## physics

Two strings, each 19.5 m long, are stretched side by side. One string has a mass of 78.0 g and a tension of 180.0 N. The second string has a mass of 58.0 g and a tension of 152.1 N. A pulse is generated at one end of each string simultaneously. Once the

38. ## Health

I was wondering if these are correct. 1. The patient had a cystectomy. What does the root of this word mean? A. Kidney B. Bladder C. Sac D. Meatus Answer: C 2. When the uterus extends outside the !@#\$%^&, a condition known as ______ exists. A. dysplasia B.

39. ## physics

A sphere of radius r and mass m has a linear velocity v0 directed to the left and no angular velocity as it is placed on a belt moving to the right with a constant velocity v1. If after sliding on the belt the sphere is to have no linear velocity relatives

40. ## calculus

s(t) = t^4 - 2t^2 + 1 t is greater than or equal to 0 Find the interval(s) in which the robotic arm is slowing down in the negative direction.

41. ## human services

What is the difference between primary, secondary, and tertiary preventio? I am workiong on three scenario's in hsm/210?

42. ## English

A Picture is Worth a Thousand Words: Create a collage that depicts a scene or scenes from the play, HAMLET. Use pictures and words cut out from magazines or other sources to create your collage. Write an explanation that describes the scene and explains

43. ## Physics

Explain how the following changes in a reaction conditions will affect the position of the equilibrium below. A (g) + B (aq) C (s) + heat 1. The temperature of reaction is raised by 20 degrees C 2. As the reacton progresses, more of the compound B is added

44. ## chemistry

According to this chemical reaction, which is the number of grams of Fe produce from 14 moles of H2?

45. ## Finance

NET INCOME BEFORE TAXES OF \$200,000 AND SALES OF \$2,000,000. IF IT IS IN THE 50% TAX BRACKET, WHAT WOULD IT'S AFTER TAX PROFIT MARGIN BE?

46. ## Chemistry

At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: 2NO(g)+(3/2)O2(g)+H2O(l)-->2HNO3(g) If all of the nitric acid produced by this reaction is

47. ## STATS

Consider the following information: Season Sales(units) Summer Autumn Winter Spring Christmas 98 114 123 105 Holidays 110 110 110 110 The expected frequency for cell winter/holidays (e13) is equal to (1) 104.0 (2) 112.0 (3) 110.0 (4) 116.5 (5) 107.5

48. ## Chemistry

Why is there no reaction between Cr2(SO4)3 and Na2SO4?

49. ## chem

How many moles of chlorine are needed to react with 3.30 moles of aluminum?

50. ## Chemistry

Why is there no reaction between Cr2(SO4)3 and Na2SO4?

51. ## chemistry

to increase therate of solvation of carbon dioxide, what must a scientist consider? should they decrease the temp and increase the pressure, or vice versa?

52. ## organic chem

what should you see when 2-butanol is treated with NaI-I2? if you pour ethylene glycol into water it mixes in all oroprtions. but if you bubble butane, a gas of comparable molar mass through water, it does not mix but just bubbles away. how do you explain

53. ## Chemistry

When 442 mg of NO2 is confined to a 150. mL reaction vessel and heated to 300°C, it decomposes by a second-order process. In the rate law for the decomposition of NO2, k = 0.54 1/(M·s). A) what is the initial reaction rate? B) what is the reaction rate

54. ## ms.sue

thanks for your help Select the word which has its etymological meaning to settle a payment and has the current meaning to supply with capital. A. firmament B. Finicky C. Finess D. *Finance

55. ## chemistry!

how many moles of product are formed in the reaction? 2Al(s),3Cl2(g)--->2AlCl3(s) please help me!! thank you so much

56. ## Chemistry

I have a question about buffers. Part A So it starts with 20ml 0.1 sodium acetate and 25ml 0.1 acetic acid. Calculate ph of buffer is 4.74 because the acid and conjugate base have the same molarity correct? So the Ph is just pKa (1.8e-5)? Part B So the

57. ## Chemistry

Are Lewis acids and bases defined using dissociation, electron pairs, hydrogen ions, or hydroxide ions? Does a Lewis acid accept, produce, or donate hydrogen ions, or does it an electron pair acceptor?

58. ## math

i have a gallon of paint that contains 35% solids and 65% water.if i add 5% 6.4 more ounces of water to it what will the solids content be.can you show to figure this out thank you

59. ## algebra

1. Imagine you are in the market for a new home and are interested in a new housing community under construction in a different city. a. The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to

60. ## Socials Studies

1. Why did many people leave Iceland in the 1870s? They were driven from their homeland by a series of volcanic eruptions. 2. Why did they choose Canada as a destination? ??? Can someone please help me with the second question. thanks.

61. ## latin bases

Which Latin base means to see? a.CLUD b.PLEN c.VOC- d.VIS-

62. ## chemistry

2NH3+H2SO4---> (NH4)2SO4 Calculate the mass of ammonia required to produce 125g of ammonium sulfate.|:

63. ## Psychology

How does psychology as a scientific discipline differ from the causal observations we make about the world in everyday life? What are the similarities?

64. ## Chemistry

The half-life for the second-order reaction of a substance A is 55.8 s when concentration of initial A = 0.69 M. Calculate the time needed for the concentration of A to decrease to the following values. (a) 1/8 of its original value (b) 1/9 of its original

65. ## math

the graph shows a circle with a radius 1 inscribed in the parabola y=x^2. Find the center of the circle.

66. ## math

A stained glass window is composed of 20 triangular sections, each with sides 6, 8, and 7 in. Find the total area of the window (to the nearest square inch).

67. ## statistics

Hello!! A survey indicates that for each trip to the supermarket, a shopper spends an average of 45 minutes with a standard deviation of 12 minutes in the store.the length is normally distributed and represented by variable x. a.A find the probability that

68. ## Chemistry

2A-->B+C given that the initial concentration of A is .022M and that at 69 s, the concentration of B increases to .0095M, what is the rate constant? i know I need to find the new concentration of A at 69s, but I am having trouble with findthing this. I

69. ## chemistry

For the first-order reaction A => 3 B + C, when [ A]0 = 0.014 mol·L-1, the concentration of B increases to 0.017 mol·L-1 in 2.7 min. (a) What is the rate constant for the reaction expressed as the rate of loss of A? I found this to be .1923, which I know

70. ## chemistry

to increase therate of solvation of carbon dioxide, what must a scientist consider? should they decrease the temp and increase the pressure, or vice versa?

A cylindrical glass is 13cm tall and has a radius of 4cm. What is the volume of the glass in cubic cm? What is the volume of the glass in liters if 1cm is equal to .001 liter?

72. ## chemistry

why there no color change in Glycine when mix with HNO and NAOH

73. ## U.S. history

Assume the role of a newspaper journalist covering a story on industrial workers in the late 19th Century.

74. ## chemistry

why there no color change in Glycine when mix with HNO and NAOH

75. ## physics

A 1000m3 rocket weighing 2.0x10^3 kg is going to be launched into space. On ignition, gas is expelled from the bottom of the rocket at a speed of 2.4x10^3 m/s relative to the rocket. The rate at which the fuel is consumed is 8.02kg/s. Is there a time delay

76. ## chem

Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3(s) + 3 Fe(s) 2 Sb(s) + 3 FeS(s) When 10.9 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this

77. ## hsm 210

week 8 . need hel getting started with evaluating communication strategies

78. ## math

i have to find the suface area of rectangular prisms here is the problem 9*2.1 2.1*4.4 4.4*9 i got 135.48 is that right

79. ## calculus

What is the domain of y= sq.rt. of (x^2 + 1)

why was the bill of rights added to the constitution

81. ## Pre-Cal(urgent)

Find u X v, where Q is the angle between u and v. magnitude of u =4 magnitude of v=10 Q=2pi/3 The Q is the part that is throwing me off. I do not know where to start.

4 1/5x3/4x6=

83. ## English

For the book into thin air Your reaction to the 5 sections. Describe the section. But don't get too caught up in telling the plot. You can assume your audience has read the book. Tell which parts or characters were interesting to you or surprised you. Give

84. ## chemical and ionic equlibrium

1. calculate H+ ion concentrates in 0.10 m acetic acid solutions. Given that dissociation constant of acetic acid in water is 1.8 * 10^-5 ? 2. Calculate the concentration of H+ and OH- in a 0.05 m HNO3 solutions at 25^0c ? 3. The degree of dissociation of

What happens when an insulator is wired in series with the bulb? Is trhe swich open or closed?

86. ## science please no websites

could you please give me an example of the following(types of friction) : -static -sliding And also: -friction -buoyant force -air resistance Thank You!

87. ## Probability/Stas

There are 20 red yellow and green tiles in a bag. 1/2 of the tiles are not yellow. 1/5 of the tiles are red. What is the probability of randomly selecting a colored tile from the bag that is NOT green?

88. ## Health

2. When the uterus extends outside the !@#\$%^&, a condition known as ______ exists. A. dysplasia B. hyperplasia C. Bartholin's gland abscess D. prolapse Answer: A (correction D) 3. The patient had a diagnosis of Addison's disease, which is caused by

89. ## statistics

The first class in a relative frequency table is 50-59 and the corresponding relative frequency is.0.2. what does the 0.2 value indicate?

90. ## band

can you give some music leaning site

What happens when an insulator is wired in parallel with the bulb? is the swich open or closed?

92. ## Chemistry

You have a 1 L container of F2 at 20 degrees C and 1 atm. Subtract the weight of the container , what is the mass of the gas

How many current paths are there in a series circuit connection?

94. ## math

3sqrt(7)-3sqrt(64)+7sqrt(112)

95. ## Physics

Compare and contrast concepts of unsaturated, saturated and super saturated solutions. How would you make each type. What would they be useful for?

96. ## english

Critique this paragraph:Wife beating affects a woman both physically and emotionally. Having little or no charge of financial matters, or plans, these women devote themselves to their husbands and families, often resulting in a loss of friendship and

97. ## Algebra

1. Classify the following number as rational or irrational: 4.1 rational? 2. True or False: The Associative Property allows you to change the order of terms in an expression. False? Thanks -MC

98. ## Astronomy

Compared with the strength of Earth's gravity at its surface, how much weaker is gravity at a distance of 13 Earth radii from Earth's center?

99. ## Health

1. The patient had a cystectomy. What does the root of this word mean? A. Kidney B. Bladder C. Sac D. Meatus Answer: C 2. When the uterus extends outside the !@#\$%^&, a condition known as ______ exists. A. dysplasia B. hyperplasia C. Bartholin's gland

100. ## science, chemistry

Calculate the work done when 70.0 g of tin are dissolved in excess acid at 1.00 atm and 29°C. Assume ideal gas behavior. Sn(s) + 2 H+(aq) Sn2+(aq) + H2(g) what???

101. ## college, Astronomy

Compared with the strength of Earth's gravity at its surface, how much weaker is gravity at a distance of 13 Earth radii from Earth's center?

How many current paths are there in a parallel circuit connection?

103. ## Chemistry

Determine the concentration of a dioxin solution whose percent absorbance is 0.40%

104. ## physic

In a house the temperature at the surface of a window is 25 ¡ãC. The temperature outside at the window surface is 5.0 ¡ãC. Heat is lost through the window via conduction, and the heat lost per second has a certain value. The temperature outside begins

105. ## stats

A statistics practitioner wishes to test the following hypothesis: H0 : ì = 600 against H1 : ì < 600 A sample of 50 observations yielded the statistics: mean x = 585 and standard deviation sx = 45. The test statistic of a test to determine whether there

106. ## Chemistry

Organic chemists state that the rate of a chemical reaction can be doubled by increasing the reaction temperature by ten degrees Celsius. Explain this drastic increase in reaction rate using the concept of reactins and kinetic molecular theory

107. ## physic

An 85.0-N backpack is hung from the middle of an aluminum wire, The degree of hung of the wire is 3 degree. The temperature of the wire then drops by 20.0 C¡ã. Find the tension in the wire at the lower temperature. Assume that the distance between the

108. ## stats

A bakery stated that the average number of breads sold daily is 3000. An employee thinks that the actual value might differ from this and wants to test this statement. The correct hypotheses are: (I think it is 1) (1) H0 : ¦Ì = 3000 H1 : ¦Ì not= 3000

109. ## stats

A statistics practitioner formulated the following hypothesis: H0 : ì = 200 against H1 : ì < 200 and learned that x = 190 n = 9 and ó = 50. The p– value of the test is (1) 0.6 (2) 0.2743 (3) 0.7743 (4) −0.2743 (5) Cannot be found with information

110. ## stats

In a sample of 500 college students fifty percent of all college students attend schools within 50 miles of their homes. The probability that the population proportion will be between 0.45 and 0.55 is (1) 0.4875 (2) 0.9818 (3) 0.4909 (4) 0.9750 (5) 0.5000

111. ## Chemistry

Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give me answers. :( a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. Answer: ? b)How many

112. ## stats

Suppose the mass of college students can be modeled by the normal distribution. We believe the mean of the normal distribution is 72 kg. We randomly sample 18 students and find an average of 69 kg and a standard deviation of 4kg. A. The standard error of

113. ## stats

The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 19.22. A random sample of salespeople was taken and the number of cars each sold is listed her. 79 43 58 66 101 63 79 33 58 71 60 101 74 55 88 The

114. ## algebra 1

how can you solved this problem-3n squared+5n-2=0 using discriminant and to know if it is 1 or sol

115. ## stats

In a random sample of 500 students, 80% say they have a part-time job. An approximate 95% confidence interval for the proportion of students with part-time jobs is: (1) (0.758; 0.842) (2) (0.765; 0.835) (3) (0.770; 0.830) (4) (0.800; 0.835) (5) (0.782;

116. ## math

surface area of a rectangular prisms i have one with the same # on each side how many times should i * it

117. ## stats

To test the hypothesis H0 : ì = 100 against H1 : ì > 100, a statistics practioner randomly sampled T observations and found the mean x = 106 and the standard deviation sx = 35. The value of the test statistic is equal to (1) 1.1743 (2) −1.7143 (3)

118. ## Managerial Accounting

1) If the Cost were split simply 50-50- than allocated expense would be - Advertising Expenses - \$ 2.5 M for each business and warehouse expenses - \$ 1.5 M for each business 2) As per my view the Advertisement expenses should be allocated in the ratio of

119. ## STATS

Suppose we want to test the null hypothesis H0 : ì = 400 against H1 :ì < 400. The test statistic is calcuated as −1.23 and the two-tailed critical value is 1.96. The appopriate p–value will be (1) −0.0500 (2) 0.3907 (3) 0.1093 (4) 0.8907 (5)

120. ## English

I'm looking for some resources that give webcam usage data or any kind of research studies on them. I've checked ebscohost and google scholar so far. Any ideas? Maybe other search terms to use? Thanks in advance

121. ## Finance

If sales grew 20% from 10,000,000 to 12,000,000 and the discresinary financing needs is 500,000. What percent of sales grown would be needed to equal a DFN of zero.

122. ## Pre-Cal

An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the altitude of the plane, is from the southwest and has a velocity of 60 miles per hour. What is the true direction of the plane, and what

123. ## STATS

Determine the p–value associated with the values of the standardized test statistic z = 1.05 for one-tail test. (1) 0.3531 (2) 0.1469 (3) 0.8531 (4) 0.0146 (5) 0.2938

124. ## English

Can someone explain this....."I've got a theory". I looked up the def. of perverse and realized it's someone who is stubborn or wrongly self-willed. But I'm confused on that quote stating "I've got a theory". How is this quote related to perverse?

125. ## Health

1. A 15-year old female patient has experienced daily nausea for the past two months. The patient states that she feels like "I've eaten something that has upset my stomach.: She denies vomiting and weight loss. The patient has noticed a weight gain of 10

126. ## math (pre-calc)

Analyzing a Stock. The beta, B of a stock represents the relative risk of a stock compared with a market basket of stocks, such as Standard and poor's 500 Index of stocks. Beta is computed by finding the slope of the line of best fit between the rate of

127. ## geometry

What has 4 equal sides, and both paris of opposite sides are parallel but it dose not contain a right angle?

128. ## CHEMISTRY

Why do the metallic elements of a given period (horizontal row) typically have much lower ionization energies than do the nonmetallic elements of the same period?

129. ## Algebra

2 (3a - 4) - 2 (4a + 3) simplify 2 (a + 4) = 4 (a - 3)solve the equation Any help would be appreciated, I am still learning. Thanks!

130. ## Chemistry

Why is it important for you to know how to separate solids from liquids?

131. ## Chem

Determine the concentration of a dioxin solution whose percent absorbance is 0.40% This is the resulting: Absorbance Dioxin 0.64 5.5 0.76 6.3 1.0 8.0 But why can't I figure out the concentration whose percentage is .40%?

how does electric discharge affect the society?

133. ## Ms. Sue

The term assimilation refers to when : A.*** a word is borrowed into English through different venues B. A latin adj. becomes an english verb C. certain sounds blend into and become similar to neighboring sounds. D. a Latin bse meaning does not fit the

134. ## college calculus

a point is moving on the graph of xy=30. when the point is at (6,5), its x-coordinate is increasing by 6 units per second. how fast is the y-coordinate changing at the moment

135. ## college calculus

a point is moving on the graph of xy=30. when the point is at (6,5), its x-coordinate is increasing by 6 units per second. how fast is the y-coordinate changing at the moment

136. ## Physics

Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10.0 cm that has a

137. ## Physics

In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 695 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of

138. ## government

Which statement about the senate is true?

139. ## math

A painter needs to cover a triangular region 62 meters by 66 meters by 71 meters. A can of paint covers 70 square meters. How many cans will be needed?

140. ## physics

A 0.56-kg mass is suspended from a string, forming a pendulum. The period of this pendulum is 6.0 s when the amplitude is 1.5 cm. The mass of the pendulum is now reduced to 0.35 kg. What is the period of oscillation now, when the amplitude is 2.8 cm?

141. ## math

1/3(9 + g) = g+1 can you please show me the steps and answer for this question?

142. ## latin bases

which statement is not a requirement for anadequate definition? A)***a definition should not be expressed in the negative. b) a definition should be complex C)a definition should use a noun to define a noun a verb etc D)a definition should not giv an

143. ## chem

Can someone show me the structural formula (lewis diagram) for ethene??? Please

144. ## Statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first… a. Percentage of scores less than 100 b.

145. ## latin bases check please

the latin bases in your text A)***a printed in capital letters B)printed in italics C)underlined D)put in parentheses

identify the latin basein the word aggrandize a)ize- B)ag- C)grand- D)***aggra-

147. ## physics

The period of oscillation of a spring-and-mass system is 0.56 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring?

148. ## Child Development

My Moral Reasoning assignment says to select one of the age groups I chose in week 6: Middle Childhood (6-10). Then says: Decide on child's age, what level and stage he or she is at developmentally, and list some characteristics demonstrating the nature of

149. ## check

select the correct definition of the word linear A)***arranged in a line B)division into lines C)to outline D)location of a line

150. ## physics

The prong of a tuning fork moves back and forth when it is set into vibration. The distance the prong moves between its extreme positions is 2.24 mm. If the frequency of the tuning fork is 440.7 Hz, what are the maximum velocity and the maximum

151. ## Math

What is the property type of (2x100)+[(1x100)+(3x10)]+(5x10)

152. ## Chemistry

How do I solve this? The usual partial pressure of oxygen that people get at sea level is .20 atm, that is, a fifth of the usual sea level air pressure. People used to 1 atm air pressure begin to become light headed at about .10 atm oxygen. As a rule of

153. ## Chemistry

How do I set this up? What formula do I use? Will you please help me? How many liters of ammonia at STP are produced when 10 g of hydrogen is combined with nitrogen?

154. ## BIO100

Post a 200- to 300-word response to the following: In your own words, summarize each of the major theories of biology. Choose one theory and provide an example of how this theory relates to the news today. Use at least one outside reference in addition to

155. ## math

2 = 8 (s + 7) 2 = 8s + 56 56 - 2 = 8s 54 = 8s /8 /8 6.75 = s did i do this question right?

156. ## science

What is the storm on Jupiter?

157. ## Chemistry

How many moles are there in a 4.3 mole of tungsten?

158. ## Chemistry

How many protons, nuetrons, and electrons are in 18 2- O 8

159. ## vocab

write a sentences for brother's and brothers

160. ## Chemistry

How many moles are there in a 4.3 mole of tungsten?

161. ## English

Hi I am writting an essay on a book called 'Funny Boy' I have to answer this question: Selvadurai raises questions about the nature of identity—national, familial, sexual, postcolonial, ethnic, racial—and how the suppression of one’s burgeoning or

cos x sin x

163. ## SIMILIES

i need one really good and significant simile.

164. ## PHYSICS!!!

A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x = -2.0 cm. A second, parallel wire carrying a 2.5 A current intersects the x-axis at x = 2.0 cm. PART A At what point on the x-axis is the magnetic field zero if

165. ## math

If Swin uses tje equation S=25w+300 to figure out how much money she has in the bank, where w is the number of weeks since she opened the account. Which list shows the pattern of how muchmoney Swin could have starting from the time she opened the account?

166. ## math

b+3/4 = b-1/2 could you help me with this question?

167. ## physics help

The period of oscillation of a spring-and-mass system is 0.56 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring? m/s2

168. ## science

How many grams of NH3, are required to produce 5.23 g HF?

169. ## CHECK .

Idntify the latin prefix in the word circumfrence. A. cir- B. *circ- C. circu- D. circum-

170. ## math

julie arrived 20 minutes before the race began. she started right on time. it took her 24 minutes to finish the6-kilometer race. she stayed 10 minutes after the race to cool off; she left. if she arrived at the race at 9:10a.m., what time was it when she

171. ## Chemistry

Rank the elements B, Al, Na, Mg from largest to smallest atomic radius. Would it be: Al, Mg, Na, B?

172. ## Chemistry

Are Lewis acids and bases defined using dissociation, electron pairs, hydrogen ions, or hydroxide ions?

173. ## Chemistry

I need to find the rate constant. I know that it takes 2A to make B, but I am mixed up on how to figure out how to find the concentration of A at 69s

174. ## geometry

what is the surface area of a box, that has the length of 15 in , a width of 8 in . and a height of 3 in.

175. ## math

what is a n angle

176. ## chm

Calculate the PH OF A SOLUTION prepared by mixing 15.0mL OF 0.50 M OF NaOH AND 30.0mL OF 0.50 M BENZOIC ACID SOLUTION?( Benzoicacid is monoprotic and its dissociation constant is 6.5*10^-5)

What was corn prepared for 200 years ago

178. ## Math

Im going to try another percentage problem. Will you please double check me. Thanks for all your help! 2580/4440=.581081081 Change to percent and round to nearest tenth. .581081081*100=58.108 rounded to nearest tenth is 58.1%

179. ## geometry

which units would you most likely use to describe the difference in height between a cricket and a grasshopper

1. CheckPoint: Identifying Fallacies • Resource: Ch. 6 End-of-Chapter Exercises and the Answers, Suggestions, and Tips for Triangle Exercises section of Critical Thinking • Complete Exercise 6-6 on pp. 194-196 of Critical Thinking. You are not required

181. ## Stonehenge

What do people do at Stonehenge?

182. ## math

what is the expression r^2+s^3 when r=5 and s=3

183. ## history

I have to do a paper on the railroad strike of 1877, but I find that there is too many websites. My teacher does not want us to use Wikipedia since the information changes too much. I have looked at all of them, but cannot find a good one. We have to

184. ## Algebra 2

i am stuck. Prove that if a and b are rational numbers, (a + ^b)3 + (a - ^b)3 is also rational. ^ = sq root sign Thanks

185. ## English

How do you pronounce the leading actor, DeCaprio in the movie Titanic?

186. ## math

double my tens digit to get my ones digit. double me and i am less than 50? who am i

187. ## math

If the cirumference of a circle is 16 pi what is the radius

188. ## somatic vs. germ cell

is polar body a germ cell?

189. ## Latin prefix

since the word segregate contains the Latin prefix se-,part of the meaning refers to: a.under b.behind c.forward d.aside

190. ## Math

Kalvin wants to eat Coco blast but his mom doesn't want him to because it's to sugary.So, Kalvin decides to flip a penny. Every time he gets a head he eats coco blast, and every time he gets tails he doesn't. Later on he found out it did not help b/c it

191. ## English

1. When do I have to return it by? You have to return it by tomorrow/Monday. 2. When is the due date? The due date is March 3rd. 3. When is the deadline? The deadline is tomorrow evening. (Are the questions and answers correct?)

192. ## math

A box contains two dimes and four quarters. What is the expected value of a single draw of one coin under the assumption that one cannot distinguish between the coins on the basis of size? can you please explaing for elementery students

193. ## Chemistry

How do I solve this? The usual partial pressure of oxygen that people get at sea level is .20 atm, that is, a fifth of the usual sea level air pressure. People used to 1 atm air pressure begin to become light headed at about .10 atm oxygen. As a rule of

194. ## College Chemistry

If 69.3g of magnesium chloride were produced from a process with a known yield of 78.3%, find the mass of carbon tetrachloride in grams that was used. Equation: 2CCl4 + MgCrO4 -> 2COCl2 + CrO2Cl2 + MgCl2 I was able to solve it but I just don't understand

195. ## math

The perimeter of the small square is one-third the perimeter of the large square. What are the side lengths of the squares? small square side = x large swuare side = x + 2

196. ## us history

Sara, Sorry to bother you again, I read the websites you provided for me and I do thank you very much. I decided to do the interview on the coal mine workers, but where do I find the list of coal mines established in the 19th century that associates with

197. ## Chemistry

How do I solve this? The usual partial pressure of oxygen that people get at sea level is .20 atm, that is, a fifth of the usual sea level air pressure. People used to 1 atm air pressure begin to become light headed at about .10 atm oxygen. As a rule of

199. ## accounting

I need an understanding of a few matters in my accounting class: 1) what are annuities and why is it necessary to calculate there present value? 2) How does the frequency of interest compounding, regardless of the rate of interest or period of accumulation

200. ## science

The ______ of a transverse wave is the distance between 2 crests or 2 troughs.

201. ## calculus

Determine when y'' = 0 y'' =1 / sq.rt.of (x^2 + 1)^3

202. ## Algebra 2

Find the real roots of the eqution 16x2(squared) = 81

Task: Read the following two scenarios and explain for each scenario, all the torts that have been committed, any arguments that can be used as a defence or to limit liability, and likely liability which will be imposed on each of the parties. Scenario 1

as a hurricane forms the warm air-- answer. goes up

205. ## math

What is the input when the output is 11, 17, 23 output =3m-4

206. ## algebra

2. As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a. The sales representative here tells you they also have two floor plans available, but they only have

on each side of a hurricane the-- answer warm air sinks

208. ## Macro Economics

Economists who work for the government are often called on to make policy recommendations. Why do you think it is important for the public to be able to differentiate normative statements from positive statements in these recommendations?

209. ## algebra

John's car is 13 feet long. He is making a model that is of the actual size. Which proportion below should be used to find the length, L, of the model?

210. ## Religion

How do contemporary Buddhist practices reflect the foundations of the religion?

211. ## Physics HELp

In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is frictionless, except for a rough patch of

212. ## Physics

A block of wood of mass 0.91 kg is initially at rest. A bullet of mass 0.047 kg traveling at 104.7 m/s strikes the block and becomes embedded in it. With what speed do the block of wood and the bullet move just after the collision?

213. ## Algebra 2

simplify ã15*ã42 _________ ã35

214. ## pHYSICS HElp

***EXTRA CREDIT*** Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width

A 60.0 kg person bends his knees and then jumps straight up. After his feet leave the floor, his motion is unaffected by air resistance and his center of mass rises by a maximum of 14.9 cm. Model the floor as completely solid and motionless. (a) Does the

216. ## Biology

What are the treatments for Miller Syndrome. A website would be nice:) Thanks!

217. ## statistics

the heights of 1000 students in a college are normally distributed with a mean 5’10" and SD 2". Use 68% for the region from the mean to 1-SD on either side; 94% for the region from the mean to 2-SD on either side and 98% for the region from the mean to

218. ## calculus

Find the point on the function y= 1/ x, x>0 that is closest to the point (2,2) and then state the minimum distance.

219. ## science

the space occupied by a solid

220. ## Physics

An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and starts at rest at point A. (a) What is the object's speeds at point B, at point C, and at point D?

221. ## math

i have 5 coins,a penny,nickel,dime,quarter and loonie. how many different amounts of money can i pay using any combination of the coins?

222. ## hum/205

i need to create a 2-page, informative newspaper advertisement for the exhibition. in a 300-400 words of text describing the exhibition. A description of the cultures, including the religion, language, and general philosophies and beliefs. A description of

223. ## chemistry

Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3(s) + 3 Fe(s) 2 Sb(s) + 3 FeS(s) When 10.9 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this

224. ## To Alex - re Math

Your umpteen posts been removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

225. ## Physics

An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and starts at rest at point A. (a) What is the object's speeds at point B, at point C, and at point D?

226. ## math

The sides of a parallelogram are 15 ft and 17 ft. One angle is 40° while another angle is 140°. Find the lengths of the diagonals of the parallelogram (to the nearest tenth of a foot)

227. ## English

Who is Ms. Kim? 1. She was Bora's teacher last year. 2. She is Bora's old teacher from last year. 3. She is Bora's teacher in elementary school from last year. 4. She taught Bora in elementary school last year. (Bora learned from Ms. Kim last year. Bora is

228. ## English

1. Which club do you go to? I go to a quilt club. 2. Which club do you belong to? I belong to a broadcasting club. 3. Which club are you in? I am in an RCY club. (Are the answers and questions the same?)

229. ## math

whats 17=5b+8

230. ## calculus

Given v = sq.root of g^2 + 2gs where g is a constant and v is velocity and s is a positive function. Show that acceleration is a constant.

231. ## physics

an ultrasonic beam reflects off a tumor in an organ at Θ = 44 degrees with a shift L = 3 cm. If the speed of the wave is 29 % less in the organ than in the medium above, determine the depth of the tumor below the organ's surface.

232. ## MUSIC

Tell me about maurice ravel his childhood ( fam and friends) his love life his passion his accomplishments his death

233. ## chemistry

In a laboratory setting, how would you determine if a compound was a hydrate?

234. ## physics

A harpsichord string of length 1.60 m and linear mass density 25.0 mg/m vibrates at a (fundamental) frequency of 450.0 Hz. (a) What is the speed of the transverse string waves in m? (b) What is the tension in N? (c) What are the wavelength and frequency of

235. ## ETH125

What are some of the changes the United States has made to policies concerning the treatment of Muslim and Arab members of society

236. ## Physics

A person of mass 70kg slides across a slippery floor at 2m/s. If the coefficient of kinetic friction is 0.05 and that of static friction is 0.35. Find the distance the person will slide before stopping.

237. ## math

A painter needs to cover a triangular region 62 meters by 66 meters by 71 meters. A can of paint covers 70 square meters. How many cans will be needed?

238. ## Human Resources Management

The certification process in skill-based pay is analogous to.... a. job analysis b. compensable factors c. regression analysis d. factor degrees and weights

239. ## Math

A 3-mile cab ride cost \$3.00. A 6-mile cab ride cost \$4.80. Find a linear equation that models cost c as a function of distance d

240. ## chemistry

A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to

241. ## English

1. I am in the video media club. We learn how to make videos and upload them on the Internet. 2. I am in the print media yp club. We learn how to make documents and make books. 3. I am in the information communication yp club. We learn about computer and

242. ## chem - pressure

A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to

243. ## ALGEBRA

A 5-mile cab ride costs \$9.30. A 11-mile cab ride costs \$17.70. Find a linear equation that models cost c as a function of distance d.

244. ## math

Determine the length of a pendulum that has a period of 4 seconds.

245. ## Western Civilization

How did industrialization change traditional society?

246. ## english

what is "we are paid" mean? does that mean someone offer us money or we pay money to someone

247. ## Stats

Hi please help. The proportion of coaches who spend more than 120 minutes at the sport is 0.023. Out of 1000 coaches, the expected number who will spend more than 120 minutes at the sport is: (1) 1023 (2) 120000 (3) 23 (4) 977 (5) 63.24

248. ## math

The tires of a car have 25in diameter to the nearest tenth, how many revolutions does each tire make in a mile

i want to start business of Mineral water manucfacturing in kolkata,can any body suggest me how can i start this business.how can i purcahse machinery in kolkata.and also tell me the projected cost for entire set-up

could you please give me an example of the following(types of friction) : -static -sliding And also: -friction -buoyant force -air resistance Thank You!

251. ## chemistry

The mole fraction of CO2 in a certain solution with H2O as the solvent is 3.6 × 10−4. The molality of CO2 in this solution is about: A. 0.00036 m B. 0.0065 m C. 0.020 m D. 2.0 × 10−5 m E. 6.5 m

252. ## social studies

why is it that politicians rarely run campaigns on the idea of raising taxes?

253. ## com220

how can I gather and evaluate information that is credible?

254. ## Chemistry

The molarity of Sr2+ in a saturated solution of SrSO4 was determined to be 0.000500 M. Calculate the solubility product constant (Ksp) for SrSO4. SrSO4(s) = Sr^2+(aq) + SO4^2- (aq) Molar Mass (g/mol) SrSO4 183.68 This is what I know: Ksp = [Sr][SO4]

255. ## chemistry

what makes a good buffer? is it that it has a strong base and a strong acid? and why is blood a good buffer? is that because the oxygen it carries acts as a strong base?

256. ## science

what is the scientific definition of individual THANK YOU!

257. ## Eng

hi I need help editing my intro. How can i open with an interesting question yet keep it formal. please proof read. Do the terms national, familial, sexual, postcolonial, ethnic and racial hold the same meaning? Ofcourse not. However, Selvaduri’s Funny

258. ## Economic

27. Rice is what you’ll probably end up with these days if your local McDonald’s is in Indonesia. With the collapse of the Indonesian currency, the rupiah, in 1998, potatoes...have quintupled in price. That means rice is turning with an increasing

259. ## integrated algebra

5-3(2b-3)= -4

-6x>18

261. ## Social Studies

Contrast the report in the "Manitoba Free Press" with the actual situation of the Icelanders when they arrived. Why are the reports so different? Can someone clarify this question for me please. I don't quite understand. Thanks a lot.

262. ## AED 201

Search the Internet for three time management tips for teachers. List the tips, in a separate document and answer this question: How do you think these tips will affect your daily schedule as an educator? Provide a comment on how each one serves to improve

|x+4| >6

264. ## economics

How can you use information about the business cycle when making a decision about a large purchase?

265. ## At what temperature do hydrogen molecules have the

At what temperature do hydrogen molecules have the same rms speed as nitrogen molecules at 90 degree C?

266. ## caculus (pipeline)

A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined.

267. ## Economic

1.Diminishing marginal utility refers to the fact that a. demand declines as income falls. b. additional satisfaction declines as additional units of an item are consumed. c. people have unlimited needs. d. in equilibrium, supply equals demand. 2.

268. ## physics help

Assuming a typical efficiency for energy use by the body, how many slices of pizza must you eat to walk for 3.0 hr at a speed of 5.0 km/hr ? (Assume your mass is 68 kg).

269. ## Chem.

can anyone give me a good web site to review Alcohols Aldehydes o Ethers o Ketones o Carboxylic acid o Esters o Amines o Amides

270. ## algebra

Anyone? Prove that if a and b are rational numbers, (a + ^b)3 + (a - ^b)3 is also rational. ^ = sq root sign Thanks

271. ## Science

These are 3 of the 21 questions i have and they seem pretty difficult. Someone help me please :). When you consume a lot of food that is basic, how does your stomach respond to it? Why is this response necessary? Do you want to neutralize ALL the acid in

272. ## Algebra

4. Does the following set of coordinations make a horizontal, vertical, or diagonal line when connected with a straight line? (4, 5) (2, 5) 5. Positive slope indicates a _____ process. a. steady b. gaining c. losing d. slow A? 6. The m in the equation y=

273. ## chemistry

When you consume a lot of food that is basic, how does your stomach respond to it? Why is this response necessary? Do you want to neutralize ALL the acid in your stomach? Why or Why not (Hint: What is the stomach acid for?) Describe and explain two

274. ## HUMAN RESOURCES

Describe one historical period in public personnel administration. Analyze the social political environment of the perspectives that influenced the HR perspective in use at the time.

275. ## math/trig

A weight attached to a spring is pulled 4 inches below the equilibrium position. Assuming that the frenquency of the system is 8/pi cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.

276. ## math

Help please. Determine the length of a pendulum that has a period of 4 seconds.

277. ## chemistry

How many moles of chlorine are needed to react with 3.30 moles of aluminum?

278. ## math

which is greater 4 m or 400 dm

279. ## trig/math

A stained glass window is composed of 20 triangular sections, each with sides 6, 8, and 7inches. Find the total are of the window( to the nearest square inch).

280. ## math

u=(2 cos pi/4)i + (2 sin pi/4)j, v = (cos 3pi/2)i + (sin 3pi/2)j find the angle theta between the two I'm at a lost on what to do.

281. ## Physics

What happens to a bulb when a conductor is wired in series with the bulb (bulb lights or dosen't light)? Is the swich open or closed?

282. ## chemistry

*The Nernst Equation and pH* Sulfuric acid is a very strong acid that can act as an oxidizing agent at high concentrations (low pH). Under standard conditions, sulfuric acid has a low reduction potential, SO4^2-(aq) + 4H^+(aq) + 2e^- SO2(g) +

283. ## Algebra

28. Use the Distributive Property to simplify x(4x^2 + x + 4) Is it 4x^3 + x^2 + 4x? 42. To which set of numbers does 0 not belong? 46. Pi belongs to which group of real numbers? a. Odd numbers b. rational numbers c. irrational numbers C? 48. Can a number

284. ## chemistry

How many moles of carbon are needed to react with 5.01 mol SO2? How many moles of carbon monoxide form at the same time that 0.255 mol CS2 forms? How many moles of SO2 are required to make 125 mol CS2?

285. ## Finance

If sales grew 20% from 10,000,000 to 12,000,000 and the discresinary financing needs is 500,000. What percent of sales grown would be needed to equal a DFN of zero.

286. ## physics

a rain drop falls from rest in an atmosphere saturated with water vapour. As it falls, water vapour condenses on drop at rate of mass µ per second. If initial mass of drop is M0, how much distance the drop falls in time t?

287. ## thermo

Consider a cylinder containing air at 1200 kPa and 350 C and then, the air is expanded to 140 kPa with a reversible adiabatic process. Calculate the speci c work (kJ=Kg) done by the gas. Assume calorically perfect gas

288. ## chemistry

Background information: The concentration of various cations in seawater in moles per liter are Na+ (0.46M); Mg2+ (0.056M); Ca2+ (0.01M); Al3+ (4x10^-7M); Fe3+ (2x10^-7M) Question: If enough OH- ion is added to precipitate 50% of the Mg2+, what percentage

289. ## Math

Find u X v, where Q is the angle between u and v. magnitude of u =4 magnitude of v=10 Q=2pi/3 The Q is the part that is throwing me off. I do not know where to start.

290. ## thermo

Saturated water vapor at 100 kPa jets into a pitcher containing 0.17 Kg of water initially at 278 K. If steam ow rate is 4 gm/min, estimate how long it takes to heat the water to 322 K. Assume the process is at constant pressure (at 100 kPa) and kinetic

291. ## rotational mechanics

a thin rod of length 2R and mass M is standing vertically on a perfectly smooth floor. the state of equilibrium in which the rod at rest is unstable and the rod falls. FInd the trajectories that the various points of rod describe and velocity with which

292. ## MATH/ CALCULUS PIPELINE

A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined.

293. ## trignometry

if 12 cot^3 A - 31cosecA+32=0 thend find SinA ?

294. ## science please no websites

what is the scientific definition of individual THANK YOU!

ALACRITY,ALCHEMY,ECCENTRIC,EFFICACY, INSURGENCY,INTEGRITY,PENITENT,PENTECOSTAL, RESOLUTE,RESONATE. i need analogies for these words. any help??

296. ## science please no websites

could you please give me an example of the following(types of friction) : -static -sliding And also: -friction -buoyant force -air resistance Thank You!

What happens when a conductor is wired in parallel with the bulb? Is the swich open or closed?

299. ## chemistry

If you calculate the density of a gallon of CO2 gas at 27degrees celcius and 0.50 atomic pressure what the atomic pressure be?