# Questions Asked onJanuary 24, 2011

1. ## physics

three point charges are placed at the following points on the x-axis: +2µC at x=0, -3µC at x=40 cm, -5µC at x=120 cm. Find the force (a) on the -3µC charge (b)on the -5µC charge.

2. ## chemistry

An unknown metal is found to have a density of 19.300 g/cm^3 and to crystallize in a body-centered cubic lattice. The edge of the unit cell is found to be 0.31627 nm. Calculate the atomic mass of the metal. Im not sure how to approach this problem...when i

3. ## physics

A point charge with charge q1 is held stationary at the origin. A second point charge with charge moves from the point (x1,0) to the point (x2,y2). How much work is done by the electrostatic force on the moving point charge? Express your answer in joules.

4. ## Math (Calculus AB)

For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you

6. ## CP Geometry

What do you call it when the nurse gives you a shot you hardly feel? s.r. = square root s.r.5 * s.r. 15. my choices are 5s.r.3, 20s.r.5, 4s.r.10, 3s.r.2, 3s.r.10, 2s.r.6, 9, 5s.r.6, 10s.r.3.

7. ## Biochemistry

What is the concentration of HNO3 in a solution that has a pH of 3.4?

8. ## Geometry

1. MO bisects LMN, LMN = 5x-23, LMO = x+32. Find NMO. >>I got the answer 45.75 but I got it wrong. I do not know how to solve this question and I have tried all that I know. Please help..

9. ## math

In a motorcycle race, one lap of the course is 650 m. At the start of the race, John sets off 4 seconds after Tom does, but John drives his motorcycle 5m/s faster and finishes the lap 2.5 seconds sooner than Tom does. What is the speed at which each of

10. ## Chemistry

If 0.630 grams of HNO3 (molecular weight 63.0) are placed in 1 liter of distilled water at 25 degrees C, what will be the pH of the solution? (Assume that the volume of the solution is unchanged by the addition of the HNO3.) A. 0.01 B. 0.1 C. 1 D. 2 E. 3

11. ## Literature- Frankenstein Novel

Please check my answer to this question: Consider the protagonist in the novel that you read this semester. In a response of no fewer than three paragraphs, explain how this character changes over the course of the novel. Include examples of these changes

12. ## physics

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the blow-dryer. Determine the power consumed by the vacuum

13. ## Chemistry

Calculate the concentrations of S2O8 2-, I-, S2O32 2- in moles per litre of reaction mixture given the following: 20mL of 0.1 M (NH4)2S2O8 added to: 20mL of 0.2M KI 10mL of 0.01M Na2S2O3 5mL 0.2% starch Also, calculate -(delta)S2O8 2- that is, how much

14. ## chemistry 1310

The decomposition of nitrosyl bromide is followed by measuring total pressure because the number of moles of gas changes; it cannot be followed colorimetrically because both NOBr and Br2 are reddish brown: 2 NOBr(g) ® 2 NO(g) + Br2(g) Use the data in the

Choose the answer that describes how to correct the misplaced phrase. The suspect is a tall man with a beard weighing about two hundred pounds. Move with a beard to the beginning of the sentence. Place weighing about two hundred pounds right after man.

16. ## Chemistry

The following information is given for ethanol, C2H5OH, at 1atm: boiling point = 78.4oC Hvap(78.4oC) = 38.6 kJ/mol melting point = -115oC Hfus(-115oC) = 5.02 kJ/mol specific heat liquid = 2.46 J/goC At a pressure of 1 atm, what is H in kJ for the process

17. ## Physics

An 75 kg man drops from rest on a diving board −3.1 m above the surface of the water and comes to rest 0.6 s after reaching the water. The acceleration due to gravity is 9.81 m/s2. What force does the water exert on the man? Answer in units of N.

Charges of −4q are fixed to diagonally opposite corners of a square. A charge of + 5q is fixed to one of the remaining corners, and a charge of + 3q is fixed to the last corner. Assuming that ten electric field lines emerge from the + 5q charge, sketch

19. ## Math

What is the probability that a 76% free-throw shooter will miss his next free throw?

20. ## physics

1. How does a Van de Graaff Generator work? What is the magnitude of the electric field inside the dome of a charged Van de Graaff generator? 2. How does the charge on one plate of a capacitor compare with that on the opposite plate? 3. How does a

21. ## Alliedhealth

A woman is brought into an emergency room after a severe automobile accident. She’s unconscious and badly injured. Her husband arrives at the emergency room at the same time as she arrives in the ambulance. The doctor explains the wife’s condition to

22. ## math

What Do You Call Drilling 4,876 Holes?

23. ## Physics

A 0.48 kg soccer ball approaches a player horizontally with a velocity of 18 m/s to the north. The player strikes the ball and causes it to move in the opposite direction with a velocity of 24 m/s. What impulse was delivered to the ball by the player?

24. ## chemistry - grade 9

calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO -> CH3OH.

25. ## Algebra 2

a chemistry lab assistant wants to prepare 10 liters of 48% acid solution. in stock he has 80% and 40% acid solutions. how many liters of each in stock solution should he mix to prepare a 10-liter mixture?

26. ## English!! Double check my answer?

Choose the answer that identifies the underlined word. Well, I must say that your ideas are quite creative. ("creative" is underlined) direct object indirect object x objective complement predicate adjective

27. ## math

A.use the distributive property to write an expression that is equivalent -3(x + - 8) if the coefficient of the variable is increased by 10, what would the new expression be after you apply the distributive property?

28. ## organic chemistry

in gas chromatography, why do E1 and E2 give different peaks (areas) though it's the same compound?? For example, for 1-butene, the percent composition is low in E1 but very high in E2.

29. ## The Pigman

In the book the pigman who said "Actually i hate school, but then again most of the time i hate everything."

30. ## chemistry

calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO - CH3OH.

31. ## Chemistry

How much energy (in kilojoules) is released when 12.8 g of steam at 130.0 C is condensed to give liquid water at 73.5 C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K*Mol)for the liquid and 33.6

32. ## physics

pls help me solve this problem.. charges of +2.0, 3.0 and -8.0µC are placed at the vertices of an equilateral triangle of a side 10 cm. Calculate the magnitude of the force acting on the -8µC charge due to the other two charges.

33. ## ESSAY NEED HELP PLEASE

thesis satement why abortion should be illegal

Form and equivalent division problem for 5 / 1/3 by multiplying both the dividend and divisor by 3. Then find the quotient. IS it 5 / 3/9 Do I finish by mutliplying 5/1 x 9/3(reciprocal)?

35. ## Physics

Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.5 m/s2 for 3.6 seconds. It then continues at a constant speed for 10.1 seconds, before applying the

36. ## Fine Arts

2. Miniature painting continued into the Romanesque period. These paintings were found a. on the top of columns b. in churches c. in religious manuscripts d. monasteries 4. Which of the following artists used small flat planes of colors to compose a look

37. ## math

if 8m cloth costs RS 250 find the cost of 5.8m of the same cloth

38. ## math

how to find the height of a trapezoid with median 12 and area 84

39. ## social studies

what is the other name for machu picchu?

40. ## Literature- Frankenstein

Consider the protagonist in "Frankenstein". Explain how Victor Frankenstein character changes over the course of the novel, Frankenstein. Please include examples of these changes in the response. I have to write no fewer than three paragraphs, so please

47. ## Physics

After driving 20.0 km west, a car turns southwest and proceeds another 80.0 km. What is the displacement (in kilometers) of the car from the point of origin (magnitude only)?

48. ## Biology

10. In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails. For each of the following

49. ## statistics

: A researcher theorized that people can hear better when they have just eaten a large meal. Six individuals were randomly assigned to eat either a large meal or a small meal. After eating the meal, their hearing was tested. The hearing ability scores

50. ## Physics

A positive charge +q is located to the left of a negative charge -q. On a lne passing through the two charges there are two places where the total potential is zero. The first place is between the charges and is 3.8 cm to the left of the negative charge.

51. ## organic chemistry

in gas chromatography, why do E1 and E2 give different peaks (areas) though it's the same compound?? dehydration of a secondary alcohol proceeds readily with the presence of strong acid and proceeds with E1 mechanisms. Removing product from chemical system

52. ## Math 157

Copy each equation in Exercises 31–33. Replace the boldface italic letter with a number that shows the relationship indicated in the table. Then copy each table and complete it by using the corresponding equation. 32. y = -x + b x y 1 0 2 -1 8 -7 10 ? 20

53. ## Chemistry

Calculate the joules of energy involved when 11 grams of water at 10.0 degrees Celsius cools and then freezes at 0.0 degrees Celsius. How many kilocalories are required to raise the temperature of 305 gtams silver from 30 degrees Celsius to 70 degrees

54. ## math

With regards to question J: The variables x and y are connected by the equation y = x2 - x - 5. Some corresponding values of x and y are given in the table below. x -4 -3 -2 -1 0 1 2 3 4 5 y 15 7 a -3 -5 b -3 1 7 15 (a) Calculate the values of a and b (b)

55. ## Physics

Two charges are D = 1.5 m apart and lie on the x-axis. What must be the magnitude of the charge on the right one, Q2, (in C) so that the electric field is zero at x = 1.05 meters. Let Q1 be at the origin and have a charge 6 C.

56. ## Human service

Who developed the behavioral learning theory and explain the theory? Did John Watson, Ivan Pavlov and B.F. Skinner develop the behavioral learning theory? Also where can I found a explanation on this theory? Thank you

57. ## math

which of the following sums is larger and by how much? 1. 7 over Sigma 15/4(pi/10)^n 2. 11 over Sigma 17/4(4/13)^n please help me with the steps on how to figure this out! thanks

58. ## calculus

Consider a car whose position, s, is given by the table t(s) s(ft) 0 0 .2 0.35 .4 1.8 .6 3.8 .8 6.5 1 9.6 Estimate the velocity at t=0.2

59. ## Grammar! Am i correct?

Choose the answer that identifies the underlined word. Well, I must say that your ideas are quite creative. ("creative" is underlined) direct object indirect object objective complement x predicate adjective

60. ## math

How much limestone (CaCO3) in kilograms would be required to completely neutralize a lake with a volume of 5.2 x 10^7 -L lake containing 5.0 x 10-3g of H2SO4 per liter?

61. ## spanish

Is this the correct spanish prepositional pronoun in this sentence? Chicos, voy a hablar con la señora Perales, en un momento estoy con ellos?

62. ## math

In a motorcycle race, one lap of the course is 650 m. At the start of the race, John sets off 4 seconds after Tom does, but John drives his motorcycle 5m/s faster and finishes the lap 2.5 seconds sooner than Tom does. What is the speed at which each of

63. ## Algebra 1

A line has slope 4/3.Through which two points could this line pass?

64. ## physics

Calculate the force of gravity on a 12 kg mass if it were 6.4 106 m above Earth's surface (that is, if it were 2 Earth radii from Earth's center.)

65. ## math

The Aesthetic Garden Problem. A landscape architect wants the length of a rectangular shaped flower garden to be twice the width. The garden should have a total area of 288ft^2. what are the dimensions of the garden?

66. ## physics

A point charge of -7.9 microcoulomb is at the origin. What is the electric potential at (3.0, - 3.0)?

68. ## uOFp

Imagine you are conducting fieldwork and discover two groups of mice living on opposite sides of a river. Assuming that you will not disturb the mice, design a study to determine whether these two groups belong to the same species

69. ## food styles of catering

At a cocktail party,you can expect the average person to eat how many hors d'oeurves in two and a half hours? A 8 B 10 C 15 D 20

70. ## calculus

if f x is the slope of a trail at a distance of x miles from the start of the trail what does the definite integral of (f)xdx when x=3 to x=5 represent

71. ## Chemistry

a dose of asprin of 5.0mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. Calculate the number of milligrams of asprin that should be administered.

72. ## Chemistry

Why was Wohler's synthesis of urea significant to the field of carbon chemistry? Please help. Thank you.

73. ## density and density error (check calculations)

Calculate the density of earth and its density error d=m/v where m = 6.00*10^24kg and v = (4/3)(pi)(6359000)^3 = 1.07709...*10^21 m^3 therefore d=6.00*10^24/1.07709...*10^21 m^3 d = 5570.5254...kg/m^3 using the sig fig rule, in division and multiplication

nick's diner advertise fresh squeezed orange juice every day of the year. he serves twenty-four 8-ounce glasses of juice a day. nick knows it takes three 6-ounce oranges to make one 8-ounce glass of juice. nick orders oranges by cases that have 24 oranges

75. ## physics

1.How does a lightning rod work? What is the purpose of a lightning rod? 2.How does an electrically polarized object differ from an electrically charged object?

76. ## physics

1. How does the charge on one plate of a capacitor compare with that on the upposite plate? 2. Why is that you are safe from a lightning storm if you are inside an automobile?

77. ## social studies

How did the outcome of the meeting at Vincennes between Harrison & Tecumseh affect future events?

78. ## Physics

Find the electric field (in N/C) at a point r =1.4 m above a point charge Q= -78 C. Take upwards to be positive.

79. ## English

Thank you very much. I forgot to include the following these sentences. 1)The Spanish Civil War took place between July 1936 and April 1939 between the fascist rebels (known as Nacionales), the republican government and its supporters. 2) The Republicans

80. ## ap chem

1)determine the molality for an antifreeze solutions. Kf for water is 1.86 C/m in the experiment we found the freezing point of the antifreeze it was 1.2 C 2) Determine the molar mass. 5.00g of antifreeze/50g of water 3)calculate percent error.

81. ## Social St.!!!ASAP!!!!

If I am writing an essay what should I include for my paragraphs the essay question is: "What problems did the farmers experience while creating U.S. Constitution?" Intro....= what can I write? Body.....= what can I write? Conclusion....= what can I write?

82. ## math

6 men have 6 bags each, each one has 6 cats and they had 6 kittens how many legs in all

83. ## chemistry

What is the concentration of chloride ion when 75ml of 4.50m NaCl is mixed with 125mL of 1.42M FeCl3?

84. ## math

PLEASE!!!!i need help on these 4: *4y=15-3x 2y=3x+21 *4x=5y-14 y=-6x-9 *5x=4y-30 2x=3y=-12 *2/3y=10+4x 5x=1/3y-8 use linear combinations to solve the system of linear equations thank you!!!

85. ## math

write the expression that can be used to find the area of a polygon made of triangles with an area of n square units each

86. ## physical chemistry

The freezing point of a sample of abnormal blood was found to be -0.402 degree celsius. Estimate its osmotic pressure at 37 degree celsius. Kf(water)=1.86

87. ## diameter

if the sum of the diameters of two circles is 28 inches one circle has a diameter that is 8 inches longer than the diameter of the other what are the diameters of the two circles

88. ## efdtef

what conclusion based on the effectof temp on seedling growth can be drawn from this chart

89. ## math

in 5 years art will be twice as old as ben. 5 years ago art was 3 times as old as ben. How old are they?

90. ## English

Thank you very much. I forgot to include these other sentences on the same theme. 1) Back to England he suffered from bronchitis and pneumonia. 2)When the Second World War broke out he moved to London where he joined the BBC. 3) He broadcast cultural and

91. ## chem

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth¡¯s oceans, because of their high heat capacity, can absorb heat and therefore act to

92. ## Chemistry

What mass of hydrogen peroxide must decompose to produce 0.77 grams of water(H2O)?

93. ## math

A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x ¡¼10¡½^7 ¡¼mi¡½^2 in diameter, while the diameter of the 2002 hole was 6.9 x ¡¼10¡½^6 ¡¼mi¡½^2 Calculate the difference

94. ## Chemistry

72.0 ml of a 1.50 M solution is diluted to a volume of 288 mL. A 144 mL portion of that solution is diluted using 185 mL of water. What is the final concentration?

95. ## Math

A loan of $37,000 is made at 3%interest, compounded annually. After how many years will the amount due reach$49,000 or more? (Use the calculator provided if necessary.) Write the answer as a whole number. ****I get 1.03^10 = 49,724.91 So is the answer 10

96. ## Chemistry

The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in minutes, will it take for [IBr] to go from 0.500M to 0.100M? (c)What

97. ## Math (Calculus AB)

For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you

98. ## Science

What is the frequency of a wave if the movement of the wave is one hundredth (1/00) of a second?

99. ## Science

Would you expect orange juice to be more dense than water? Explain.

100. ## math

A.use the distributive property to write an expression that is equivalent -3(x + - 8)

101. ## Chemistry

what is the molecular weight (G/mol) of a diprotic acid 0.43 sample that needed 35.46 ml of 0.100 M of NaOH solution to reach a phenolphthalein point?

102. ## Chemistry

A 10.0 L tank holds helium gas at 82 C and 1.70 atm. What mass of helium gas is in the tank?

103. ## algebra 2

find the quotient and remainder of 3x^5-2x^4-5/6x^2-x+4 using long division

104. ## math

n2=144 what is the value of n

105. ## science

the water in container a is 80 degrees c and the water in container b is 5 degrees c the water in container a has??

106. ## mathematics

1.An aquarium has the shape of a rectangular prism.It's length is 80 cm.its width is one-half of the length and its height is three-fourths of the length.What is the volume of the aquarium in cm3?

108. ## Geography

This is a question about acid rain, in Canada in particular. Acid rain is an issue in eastern Canada, but not as prevalent in western Canada, due to the fact that the east is more heavily populated and industrialized, so... If acid rain fell evenly across

109. ## C++ if else problem, please look

It compiles but it doesn't work. can you tell me what i did wrong? //Sonny Hinh, variable program, assignment 2 #include using namespace std; int main () { char gender; int age, bmi, dose1, dose2; double dose3, dose4; dose1 = bmi * 2; dose2 = bmi * 2 + 13;

110. ## Friendship(Shakespeare)

I'm trying to write a few sentences about what I believe friendship is. I really love Shakespeare's literature, and want to write the sentences like his. Friendship sy ne expressed fram the mind, but the soul. It is se abounding consanguinity which one

111. ## math

what is the sum of the 1st 10 terms of the arithmetic series that has a 10th term of 50 and a 1st term of 5

112. ## ela

we are reading catching fire. we have a mini project to do. there are 17 questions and i couldn't find 4. so my questions are : 1. what is healing capacity of salt water? 2. why does salt water have those positive effects on us? 3. what is saline solution

113. ## math- check me

Find the slope of the line graphed below. Points are (-4,-1) and (4,3) Is the slope 4/8 ?

114. ## Synonyms

Hey, Im doing a short essay and my teacher wants me to use high level words, so not simple ones. Is there a good site which I can translate my simple words to those high level ones. I know that I can go search in a dictionary, but are there any other

115. ## science

an astronaut in space vehicle traveling from earth to the moon is in potential danger of being harmed by the sun's ultraviolet radiation.

116. ## Math

Use the Factor Theorem to determine whether x-3 is a factor of P(x)=2x^3-5x^-9 . Specifically, evaluate P at the proper value, and then determine whether x-3 is a factor. P(_)=__ also pick which one applies x-3 is not a factor of P(x) x-3 is a factor of

What is the PV for a bond that has 85 interest, $1000 par, 16 yr maturity, market price of$ 1,035, flotation costs of 15%. The firms tax bracket is 34%

118. ## linear algebra

show that if L is any line through the origin in R3 and x is any vector with its initial point at the origin, then the reflection of x through the line l(acting as a mirror) is equal to 2(projection of x onto r)-x I don't know how to set this up.

119. ## geometry

volume of a rectangular pyramid if the height is 13 and the base sides are 12 and 15

120. ## chemistry

Can anyone tell one molecula water H-----O------H with how maximum number of other molecule can joined together with Hydrogen bond? and CH3COOH how is joined with H-----O----H with Hydrogn bon?Thanks

121. ## math

Is the product of 6 x 2 x 4 less than 50? Explain.

122. ## physics

Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an

123. ## math

the perimeter of a rectangular floor mat is 42 inches, if the width is 9 inches, what is the length?

124. ## chem/math

How much heat would be required to warm Earth¡¯s oceans by 1.0 ¡ãC? Assume that the volume of Earth¡¯s oceans is 137 x ¡¼10¡½^7 ¡¼km¡½^3 and that the density of sea water is 1.03 g/cm3. Also assume that the heat capacity of seawater is the

125. ## math

a boy travels 20 km north, then 15 km south, how far is he from where he started?

126. ## algebra

1.)Twice a number is 28

127. ## statistics

For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The

128. ## chemistry

The pH of a solution is 6.0. Explain how the addition of the following substance would alter (or not alter) the pH of the solution. a. HCl b. NaOH c. H20

129. ## math

how much heat would be required to warm Earths ocean by 1.0 degrees C assuming that the volume is 137*10^7 km ^3 and the density of sea water is 1.03 g/cm 3. also assume that the heat capacity of seawater is the same as that of water

184. ## Vocabulary

Fill the blank, please. 1. Though his parents urged him to be more ________, Billy was naturally shy and timid. 2. Hannah tried not to let the way someone dressed _______ her opinion of that person.

185. ## algebra

WHAT IS THE AMOUNT OF MONEY PAID OR EARNED FOR THE MONEY USED

186. ## science-due tommorow

we are reading catching fire. we have a mini project to do. there are 17 questions and i couldn't find 4. so my questions are : 1. what is healing capacity of salt water? 2. why does salt water have those positive effects on us? 3. what is saline solution

187. ## Math

If line g passes through point (2, 2) and is perpendicular to the line h, then what is the equation of line g?

188. ## Physics - electric potential

Consider a solid sphere of radius R = 0.52 m that is uniformly charged with ρ = -2.8 µC/m3. What is the electric potential a distance 2.6 m from the center of the sphere?

189. ## chemestry

an oilo slick 110 nm 1.0 * 10^6 square meters of ocean.How many liters of oil are in the slick

190. ## Algebra

A loan of $37,000 is made at 3%interest, compounded annually. After how many years will the amount due reach$49,000 or more? (Use the calculator provided if necessary.) Write the answer as a whole number.

191. ## algebra

1.)Twice a number is 28

192. ## Chemistry

How do you determine if a compound is ionic, acid, or covalent ? I.E. silicon dioxide

193. ## Math Urgent

(square rt. 5) +(square rt. 20)=

194. ## Math

Add fractions and mixed numbers with like denominators example 7+1 10+10 = hOW DO I WORK THIS

195. ## English

Can you check these sentences for me, please? Thank you very much. 1) Eton College is one of the original nine English public schools and was founded in 1440 by King Henry VI . It is located in Eton, near Windsor in England, north of Windsor Castle. 2) It

196. ## geometry

Corresponding sides of 2 triangles are 6 & 15; if the perimeter of the smaller triangle is 22, what is the perimeter of the larger triangle?

197. ## ap chem

how would each error affect the molar mass of antifreeze ( too high, too low, no effect. a) the thermometer used actually read 1.4 too high b) after measuring the 50 of distilled water to make an antifreeze solution you spilled some. c)you lost some of you

198. ## trig

find all values of x on interval 0-2pi. (sin4x)(cos7x)=(cos4x)(sin7x) identities should be used.

199. ## math

I just need a little help I got this far and got stuck again. 0.10 mm=0.010cm V= (4/3) (0.010cm) ^3= 1.3333x10^-06 M= (1.3333*10^-06cm^3)*(4.0*10^14g/cm ^3) =

200. ## Economics

What are the basic characteristics of pure competition, and the importance of understanding of the pure competitive economic model to the manager of the real world firm.

201. ## social studies

what animal did the incas use for transportation?

202. ## geometry

what solid figure can you make if you combine two congruent cubes

203. ## physics

A bb player crouches lowering center of gravity 0.3m. when he jumps, center of gravity reaches 0.9m above normal. A. Calculate velocity when feet left ground. B. Calculate acceleration produced to achieve velocity. C. What force exerted on floor if mass is

204. ## math

Working on exploring algebra: Whats the Rule I understand the rules of In and out but cannot find rule with variable? Do I make up my own because the in and out equations are all correct. Please help. Ex. In 2 out 6 rule is add 4 what is rule with

205. ## physics

How long does it take a plane, traveling at a constant speed of 160 m/s, to fly once around a circle whose radius is 3450 m?

206. ## Chemistry

The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in minutes, will it take for [IBr] to go from 0.500M to 0.100M? (c)What

207. ## Math

A model car is made to a scale of 2 to 25. If the model is 17 inches long, how long is the actual car?

208. ## english

How can I write a Persuasive Essay Outline on Physical Eduation?

209. ## Statistics for social sciences

A population with a mean of u=10 has EX=250. How many score are in the population?

210. ## Calculus

Integrate the following: sin^3 x/cosx Have attempted numerous ways but can't get anything sensible to come out of it.

211. ## math/ CIRCUMFERENCE of a circle

A person has a measuring wheel that records the distance the wheel is rolled along the ground. The circumference of the wheel is one yard. If the wheel is pushed half a mile, how many times will the wheel go around (1mi=5280 ft)?

212. ## gggg

what are the equation of a line through (8,-3) and passing distance square root of 10 from (3,2)

213. ## Science

what is an 11 lettered word that means "a cell without a membrane?

263. ## math

calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm. 0.10 mm=0.010cm V=(4/3)(0.010cm)^3= M= ( i got this far now I am lost please help

264. ## reimbursment methologies

when coding late effects, the code for the what is usually sequenced first

265. ## chemistry

which stereoisomer of citric acid is produced in the citric acid cycle?

297. ## fraction

find t he fractional part of each number 2/3 of 9 and 1/6 of 12

298. ## Math

4(8 - y) = 2y + 16

299. ## Math

102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219

300. ## math

the length of this rectangle is 3 cm greater than its width ,as represented in this figure below . the total perimeter is greater than 24 cm. rectangle under bottom* __________ __________ w+3 A. write the inequality that could be solved to find w,the width

301. ## physics

A. There are 28 g of salt dissolved in 400 ml of water. Consider the quantity 0.07 = 28/400. 1. Give the name of the quantity if there is one. 2. What is the interpretation of . 07 g in this context? 3. Use the interpretation to find the amount of salt

302. ## physics

B. You can get 28 oz of spicy pretzels for $4.40, or you can get 16 oz of regular pretzels for$2.30. 1. Which is a better deal? Explain your reasoning. 2. How much would 16 oz of the spicy pretzels cost, assuming the same price per ounce?

303. ## math

what is the standard deviation of these numbers 7 9 7 10 8 7 9

304. ## physics

Problem: A sample of liquid has amass of 1.04 kg and a volume of 1300 ml. If the mass of the sampleis to be increased by 70 g by adding more of the same kind kind ofliquid, what volume of liquid must be added? Solution given: 1) 1040/1300=.80 2) 70/.80=88

305. ## math

rockfish is on sale for \$3.29 a pound. how much a piece that weighs 0.75 pound cost?

306. ## physics

Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an

307. ## Math

If the slope of line f is 2,and a line d is parallel to the line f, what is the slope of line d?

308. ## math

lcd of 1/125+62/50

309. ## devry

A small startup software developer company needs to create a program that will calculate the pay of its employees. For the third version of the program, the company wants the program to accept an employee’s name, the number of hours the employee worked,

310. ## Math

If the slope of line f is 2, and a line d is perpendicular to the line f, what is the slope of line d?

311. ## math 10

how do i work out the answer to: "how many integer values are there for k for which 4x^2 + kxy - 9y^2 is factorable?"