# Questions Asked onDecember 7, 2010

1. ## chemistry

Co-precipitation is the process by which undesirable materials are "carried down" and trapped on the suface or within the desired precitate. The precipitate is washed with distilled water to remove the co-precipitates which are more soluble that the

2. ## spanish

I am preparing for my oral exam (spanish 1) and i wrote all this down, can any one check my grammar, conjugations and add-on if necessary And also would this last me 3 minutes or should i write more to each question?? Theme 2 (el tiempo libre) ¿Cuáles

3. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

4. ## Chemistry

What is the mole of oxalic acid? Equation:H2C2O4 + 2NaOH---> Na2C2O4 + 2H2O *Moles of oxalic acid dihydrate is 0.032 mole. * Molarity of oxalic acid solution is 0.128 M oxalic acid solution. * Initial volume of Oxalic acid is 19.8 ml and Final volume is

5. ## college Chemistry

A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?

6. ## Chemistry

As one descends group 6A of the periodic table, the number of valence electrons found in each element? A. Increases B. Decreases C. Remains the same

7. ## Chemistry

Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

-17-(-5)

-17-(-5)

10. ## college

Support sentences for the sentence high rise apartments are efficient housing

11. ## chemistry

how many mL of 1M HC2H3O2 are required to neutralize a spill of 25mL of 6M NaOH?

12. ## complex Analysis

\int_{-\infty}^\infty {1 \over (4+x^4)} ,dx

-17-(-5)=

14. ## methodologies

hmo director wants to know ifmanaged care plan meets industry standared. what is on way to do this?

15. ## MATH

Carmen deposits into an account that pays simple interest at a rate of per year. How much interest will she be paid in the first years?

16. ## Logic Help

1. G > H 2. A > (G • E) 3. A / A • (H v B) 4. 5. 6. 7. 8.

After each snowstorm in Big City, USA plows remove snow from 762 lane miles of road, which is equivalent to about 48,000,000 square feet. The snowfall total was 34.2 inches in Big City, USA last winter. Suppose every snowfall evenly blanketed all road

18. ## Physics

A 3.90×10^2kg cube of ice at an initial temperature of -18.0degreesC is placed in 0.480kg of water at 41.0degreesC in an insulated container of negligible mass. Calculate the change in entropy of the system. I found the equilibrium temperature to be at

19. ## math

-20 divided by(-10)

20. ## math

Determine the domain and range of the function. 4-X^2 if x2

21. ## college

if the value of machine is 50,000,estimated useful life is eight years and scrap value is 4000 calculate straight line method for 2 years

22. ## math

lennifer can you help... -20 divided by (10)= p.s. i don't have a divided by sign.

23. ## college Chemistry

what mass of H 2 O is needed to completely react with 5.10g SiCl4

24. ## chemistry

Calculate the theoretical yield of CO2 when 4.16g of acetylene,C2H2,undergoes complete combustion?

25. ## math

-20 / (-10) =

-20 / (-10)=

27. ## Almeida

The two largest diner chains in Kansas compete for weekday breakfast consumers. The two chains, Golden Inn and Village Diner, each offer weekday breakfast customer a â��breakfast clubâ�� membership that entitles customers to a breakfast buffet

28. ## spanish

I am preparing for my oral exam (spanish 1) and i wrote all this down, can any one check my grammar, conjugations and add-on if necessary And also would this last me 3 minutes or should i write more to each question?? Theme 3 (Chicago) ¿Cómo es Chicago?

29. ## spanish

I am preparing for my oral exam (spanish 1) and i wrote all this down, can any one check my grammar, conjugations and add-on if necessary And also would this last me 3 minutes or should i write more to each question?? Tema 4 (un país hispanohablante)

30. ## Mathematics

Show that 2i and 1-i are both solutions to the equation x^2-(1+i)x+(2+2i)=0 but their conjugates,-2i and 1+i are not. Then explain why this does not violate the Conjugate Zeros Theorem.

31. ## chemistry

the element germanium has a diamond-type structure.describe the structure of germanium.draw diagram

32. ## Chemistry

A 23.6 molar solution of formic acid (methanoic acid) has a density of 1.16 g/ml. The molar mass of H, C, and O are 1g/mol, 12g/mol and 16 g/mol, respectively. What is the molality of this solution?

33. ## chemistry

Please write the chemical equation and calculate the reaction enthalpy (or energy) for the total bromination (addition of bromine gas to all double bonds) of 2,3-dimethylbutadiene (if you do not know what 2,3-dimethylbutadiene is, assume C2H4).

34. ## chemistry

If 840 mL of 0.0140 M aqueous Al3+ and 500 mL of 0.0680 M aqueous Br- are reacted, what mass (g) of Br- is produced? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) Molar Mass (g) Br- 79.904 Al3+ 26.982 Br- 79.904 Molar Volume (L) 22.400 at STP

35. ## biotech

write an sop that detail how to create 125 mM potassium phosphate buffer ph 7.1 at 32 degree celcius

36. ## Commercial Law

What is the difference between an offer and an invitation to treat and why is the difference important

37. ## chemm

When a reaction mixture with a total volume of 1180 mL that is 0.0110 M aqueous NaCl was stoichiometrically produced as per the balanced equation, what volume (mL) of 0.0116 M aqueous Ca2+ was required? 3 CaCl2(aq) + 2 Na3PO4(aq) → Ca3(PO4)2(s) + 6

38. ## Thermodynamics

A combined seperating and throttling calorimeter was used to determined the dryness fraction of steam flowing through a steam main at a pressure of 900kPa. The pressure and temperature after throttling were 100kPa and 110C respectively. The mass of water

Please suggest a few topics to present in micro-soft power point

40. ## English

Choose the correct word to complete each sentence. 1. Despite wanting to pass the exam, Julia just couldn't get down to revising. She seemed to have a mental ___ about it. a. brick b. gap c. block d. space 2. When the counsellor listened to George's

41. ## Calc

Find the area of the largest rectangle that can be inscribed under the curve y = e^(-x^2) in the first and second quadrants.

67. ## Math

two cards are drawn without replacement from an ordinary deck of 52 playing cards. what is the probability that both cards are kins if the first card drawn was a king? I was thinking it was 13/51 but not sure.

68. ## Statistics

You want to estimate the grades of st2%atistics students who gets grades of C or better. How many students should you survey to be 95% confident that the sample percentage is off by no more than 2 percentage points.

69. ## Spanish

you are preparing for a job interview for your dream profession. the job application asks you to write a paragraph eh espanol discussing the following things. please explain why you are interested in this profession, what activities will you do on a daily

70. ## com155

Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine whether a word is an

71. ## calculus

What is the limit as x approaches infinity of radical (9x*2+x)-3x?

72. ## Statistics

A researcher wants to estimate the mean serum cholesterol level for college age women. In a past study the stndard devition for this measure was 42 units. If the researcher wants to be off in his estimate by no more than three units ( with 99% confidence),

73. ## math

draw a 16-mile trail map with five locations where a hiker could start at any location, walk all 16 miles, and return to the same location without walking over any trail twice. I am confused here. At first I thought I would draw the map with the stops

74. ## Calculus 1

A ladder 10ft long rests against a vertical wall. If the bottom on the ladder slides away from the wall at 2 ft/s, how fast is the angle ladder makes with the ground changing when the bottom of the ladder is 5 ft from the wall.

75. ## Calculus

A ladder 10 ft long rests against a vertical wall. If the bottom on the ladder slides away from the wall at 2 ft/s, how fast is the angle ladder makes with the ground changing when the bottom of the ladder is 5 ft from the wall?

76. ## energy conservation

A car that is initially at rest at the top of a roller-coaster track moves down the track without friction. What must be the maximm initial height from which the car descends so that it will not fly off the 10-m-high circular hill at the bottom?

77. ## English

Hello. I need some grammar and lexical help. 1)Is it possible to use the infinitive with "purpose/goal/objective/aim": "the initiative has a purpose/goal to improve the situation" 2)is it possible to say "the visit intends to demonstrate..." (or is

78. ## physics

A car that is initially at rest at the top of a roller-coaster track moves down the track without friction. What must be the maximm initial height from which the car descends so that it will not fly off the 10-m-high circular hill at the bottom?

How educational and career goals different? How are they the same? Why is it essential to set educational and career goals>

80. ## physics

A car traveling 72.0 km/h along a straight, level road is brought uniformly to a stop in a distance of 40.0 m. If the car weighs 8.8 x 103 N, what is the braking force?

81. ## physics

A car traveling 72.0 km/h along a straight, level road is brought uniformly to a stop in a distance of 40.0 m. If the car weighs 8.8 x 103 N, what is the braking force?

82. ## physics

A block of wood is moved by a man with a force of 150 N from place A to place B with a uniform velocity of 1.2 m/s. The time taken by him in this process is 30 s.

If you were in a rotor style ride and the riders accelerate until the speed of ride is reached- if the radius of the cylinder is 5.0m and the coefficient of friction between clothes and wall is 0.5, how do you find minimum speed you would need to stick to

84. ## Help Chemistry

Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a

85. ## ipc

A sailboat is traveling at a steady speed of 13 mph. The force of the wind pushing against the sail is _______ the opposing force of the water resistance.

86. ## PHYSICS

A stationary horn emits a 135-Hz tone. What frequency is heard by a passenger on a train which is moving towards this horn with a speed of 31.3 m/s?

87. ## physics

A train on one track moves in the same direction as a second train on the adjacent track. The first train, which is ahead of the second train and moves with a speed of 31.3 m/s, blows a horn whose frequency is 124 Hz. If the frequency heard on the second

88. ## physics

A horizontal pipe contains water at a pressure of 108 kPa flowing with a speed of 1.5 m/s. The pipe narrows to one-half its original diameter. What are the speed and the pressure of the water when the pipe narrows?

89. ## physics

A water tank springs a leak. Find the speed of water emerging from the hole if the leak is 2.5 m below the surface of the water, which is open to the atmosphere.

90. ## physics

Suppose 560.0 J of heat is added to a 111-g piece of aluminum at 23.0° C. What is the final temperature of the aluminum?

91. ## english

The essayist's role is to a. study a subject from various points of view. b. put together a believable plot. c. present an accurate account of an event. d. ridicule those who disagree with his or her opinions. A?

92. ## physics

A strong man from the circus is being driven in a car which is moving at a constant speed of 5km/h. He decides he will test his strength by trying to stop the car so he pushes on the seat as hard as he can in the direction opposite to the motion of the

93. ## algebra

Find the value of this expression. 2/7 times 42/45 plus 2/5 times 11/3

94. ## math

Consumers pay for electricity by the kilowatt-hour (the amount of electricity used by a 1,000-watt appliance in one hour). If electricity costs 10cents per kilowatt-hour, what is the cost of running a 100-watt lamp for 1. 1 hour? 2. 24 hours? 3. 1 year?

95. ## math

If the numerical values of the perimeter and the area of a square are equal, what are the dimentions of the square?

96. ## interior decorating

historically, who influencedthe style and trends of art, architecture, furniture and fashion? a. interior designers b. upper class c. architects d. artists

97. ## chemistry

A solution of acetic acid, CH3COOH, has a concentration of 0.201 M and a density of 1.00 g mL-1. What is the molality of this solution?

98. ## social studies

Give an explanation on how the Unite State was founded

99. ## Social Studies

Name one person and talk about their culture from Europe

100. ## Chemistry

why do isomers have different properties? please give examples.

101. ## Social Studies

Name one person from the unite state and talk about their culture

102. ## Social Studies

Explain briefly the people and their culture. 1. Africa 2. Asian 3. South Pacific

103. ## math

Not sure how to answer this m(

104. ## math

Solve. 2-8x=22

105. ## physics

A hockey puck sliding on the ice with velocity 10m/sec is stopped by a goalie in 0.10sec. what is the goalie stopping distance ∆x in doing so.

5x/5=-3x/8+1

107. ## physics

A model rocket is launched with an initial velocity of 10 m/sec at an angle of 45° to the ground. What is the total time of flight? What is the highest point in its trajectory? What is the horizontal range archieved?

108. ## physics

If a particle goes from location Xi = 10i + 5j + 2k to location Xf = 15i – 7j + 10k in a time ∆t = 5 sec. what is the average velocity and average speed of the particle?

109. ## Marketing

What is the relationship between channels of distribution and logistics? How does geographical location affect your selection of distribution channels? Give an example of a company that needs both a physical location and an online presence. How do they

for a frequency table what is the best interval for the data 1,14,6, 8, 10, 12, 15, 22, ans 25

111. ## Physics: Waves in Media

By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

112. ## government

what is something i would find on commissioners court AGenda and not in city council court agenda?

113. ## Chemistry

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide

114. ## Chemistry

Co-precipitation is the process by which undesirable materials are "carried down" and trapped on the suface or within the desired precitate. The precipitate is washed with distilled water to remove the co-precipitates which are more soluble that the

115. ## math

We have a circle that has 270 degrees listed outside the circle at the top left. Inside the circle at the bottom right side is a an angle inside the circle with a P. Find the measure of Angle P. Would this be that we take 360-270 to get the measure of

116. ## MATH

Katie must take five exams in a math class. Her scores on the first four exams were 68, 66, 82, and 80. Answer the following questions: The maximum score on an exam is 100 points. If it is not possible for Katie to achieve the required score on the exam,

117. ## MATH

Which of the following normal distributions has the smallest spread? A. A normal distribution with mean 1 and standard deviation 3 B. A normal distribution with mean 0 and standard deviation 2 C. A normal distribution with mean 3 and standard deviation 2

118. ## Chemistry

What is the molecular weight of a gas if a 21.0g sample has a pressure of 836mm Hg at 25.0 degrees C in a 2.00L flash?

119. ## math help

Suppose you are managing 25 employees, and you need to form three teams to work on three different projects. Assume that all employees will work on exactly one team. Also, each employee has the same qualifications/skills, so any employee can serve on any

How many moles of H+(aq) ions are present in 1.25 L of 0.75M Nitric Acid? A. 0.60 mol B. 0.75 mol C. 0.94 mol D. 1.7 mol E. 1.9 mol Please show me how to work this!

121. ## physics

A diver runs horizontally off the end of a diving board with an initial speed of 1.75 sec. If the diving board is 3.0 m above the water line, what is the diver’s speed just before she enters the water?

122. ## statistics

. Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other

123. ## Physics

The A string of a violin is 31 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 5.8×10^−4 kg/m. What are the wave speed in the string? What are the tension in the string? What is the length of the tube of

124. ## Physics

A 60 dB sound wave strikes an eardrum whose area is 4.1×10^−5 m^2. How much energy is absorbed by the eardrum per second? At this rate, how long would it take your eardrum to receive a total energy of 4.6 J?

125. ## Math

The problem tells us to approximate the integral using the midpoint rule. n=5, sin(x)2 dx 0 to 1. I understand that the answer is .2(sin(.1)^2 + sin(.3)^...). When I use my calculator to get the decimal answer, I cannot get the same answer the book has. I

2x-y=-5 -2x-5y=11

127. ## Pre cal

Find the area of a triangle with sides of 12, 14 and 20

128. ## COLLEGE CHEMISTRY

THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)

129. ## physics

The displacement from the equilibrium caused by a wave on a string is given by: y(x, t) = (-0.00200 m) sin [40 m-1)x – (800 s-1)t]. What are the number of waves in 1 m

Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a

131. ## math

Which quadrilaterals have a)perpendicular diagonals b)opposite angles congruent? c) two pairs of parallel sides? d) a pair of congruent, adjacent sides? My answers a)rhombus and square b)rhombus, square, and parallelogram c)parallelogram, rectangle, and

132. ## science- chemistry

How much energy in kilojoules is needed to heat 5.00 g of ice from -10.0 C to 30.0 C ?

133. ## Calculate Osmotic Pressure

69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm3 of solution at 20 degrees C. What is the osmotic pressure of the soluton?

134. ## MAT 110

How many milliliters of a 25% solution contain 10 g of the pure drug?

135. ## Economics for Manager

Hello, Could someone please help me find the answer to this question: The two largest diner chains in Kansas compete for weekday breakfast consumers. The two chains, Golden Inn and Village Diner, each offer weekday breakfast customer a “breakfast club”

136. ## INTRODUCTION TO COMPUTERS

The Internet may best be compared to a(n) A. large network of roads. B. series of colored lights. C. loud truck motor. D. enormous skyscraper.

137. ## Chemistry

WHAT IS THE BOILING POINT OF THIS SOLUTION? 1.00x10^2g C10,H8,O6,S2 (1,5-naphthalenedisulfonic acid) in 1.00x10^2g H2O (nonionizing solute)

138. ## English

Hello. I wonder if English has certain rules concerning word division (I mean when there isn't enough space for a word on the line (or-ga-nize). I will appreciate it if you give a reference (if any)to this material. Thank you for all your detailed answers.

139. ## Chemistry

WHAT IS THE FREEZING POINT OF THIS SOLUTION? 25.5g C7,H11,N,O7,S(4-nitro-2-toluenesulfonic acid dihydrate) in 1.00x10^2g H2O(nonionizing solute)

140. ## Chemistry

WHAT IS THE BOILING POINT OF THIS SOLUTION? 25.5g C7,H11,N,O7,S(4-nitro-2-toluenesulfonic acid dihydrate) in 1.00x10^2g H2O(nonionizing solute)

141. ## Math

In a survey of 204 people, the following incomplete information was recorded relating gender to color-blindness: Complete the table on a separate sheet of paper, then complete Parts (a) - (d). There are no required fill-ins within the table. Color-Blind

142. ## English

Sunlight hits the solar cells on the backpack. (Can we use reaches instead of 'hits' in this sentence?)

143. ## Micro Economic Theory

How do you find the budget constraint given the utility function u = q1^(1/3) + q2

144. ## calculus

use the graph of f(x) in the graph to find the sign (positive or negative) of dy/dx and d2y/d2x at the points A,B,C, and D

145. ## Computers

I tried to use Google Video Uploader. However, I was not able to log in. I entered my e-mail address and then I entered the pass word, but it didn't work. Many times I tried to log on, but failed. How can I use the Google video Uploader? Would you let me

146. ## Physics

if a 120-g mass is placed at the 25-cm mark and a 25-g mass at the 10-cm mark, where should a 500-g mass be placed to balance the system?

147. ## Chemistry

How do I calculate the thckness of tin if I am only given the density which is 7.28grams

148. ## Chemistry

How do I calculate the thckness of tin if I am only given the density which is 7.28grams

149. ## statistics

Hello. I recently had this question on my Midterm "Suppose the number of students coming to Thomas’s Monday office hours follows a Poisson distribution with mean 5. Further suppose that 30% of these students wear glasses. What is the probability that for

150. ## excluded values

excluded value of: 12m²n/24mn³

151. ## Physics

A piano string having a mass per unit length equal to 5.00 „e 10¡V3 kg/m is under a tension of 1 350 N. Find the speed with which a wave travels on this string.

152. ## chemistry

2 NO(g) + 1 O2(g) 2 NO2(g) Calculate K, the equilibrium constant, from thermodynamic data at 289 K. (Hint #1: Assume that S and H do not change with temperature.)

153. ## Chemistry

If all of the energy from a 60-watt bulb was put into 1 gram of water at room temperature for 2 seconds, how much would the temperature of the water increase?

154. ## Physics

When a mass-spring system oscillates with a small amplitude of A1, it has a period of 1.0 s. If the system is then made to oscillate with a larger amplitude of A2 = 2*A1, what is the new period? Thanks!

155. ## arithmetic

2. Find the general term and 25th term of the sequences c) 15, 13, 11, 9 ...

at 20 degrees celsius, how much sodium chloride could be dissolved in 2 L of water?

157. ## Physics 40

A pendulum bob of mass M1 oscillates with a period of 1.0 s. If the length of the pendulum remains the same, but the pendulum bob is replaced with another one of mass M2 = 2*M1, what is the new period? I need help.

158. ## Math

Find the only four-digit perfect square that is a pair of two-digit squares written side by side?

159. ## Chemistry-Help!!!

How many grams of chloride ions are in 2.5L of a 1.0 M calcium chloride solution?

160. ## Chemistry-Confused!!

You have 10mL of a 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?

161. ## Math hw help

Four candidates, Allen (A), Bryant (B), Chula (C) and Ditka (D), are running for president of a club. The club uses a "First/Second/Third" ranking system. After the polls close, votes are tallied and the following results are obtained ranking 3565 1655 478

162. ## analogys

dream is to wish as goal is to ******* receive is to request as find is to******

163. ## physics

This refers to passive solar collector, where solar radiation is used to heat water. It is therefore not on the solar cells. What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If

164. ## physics

a 2191 kg car moving east at 9.9 m/s collides with a 3221 kg car moving north. the cars stick together and move as a unit after the collision, at an angle of 37.5 north of east at a speed of 5.05 m/s. what is the speed of the 3221 kg car before the

I posted this question this morning but I'm not sure of the response Damon provided. If you were in a rotor style ride and the riders accelerate until the speed of ride is reached- if the radius of the cylinder is 5.0m and the coefficient of friction

166. ## physics

a 2191 kg car moving east at 9.9 m/s collides with a 3221 kg car moving north. the cars stick together and move as a unit after the collision, at an angle of 37.5 north of east at a speed of 5.05 m/s. what is the speed of the 3221 kg car before the

167. ## Calculus

Find the slope of the tangent line to the curve at (2,1) x/y + x^2y^2 = 6

168. ## Physics

Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare

169. ## bio 102

assuming the standard values for the atmospheric partial pressure of N2, O2, AND CO2 at sea level, what is the approximate total partial pressure of the remainig atmospheric gases?

170. ## Geometry

The area of a triangle is 6.75 m squared. If the base of the triangle is 3 m, what is the height of the triangle?

171. ## English

Sunlight hits the solar cells on the backpack. The solar cells change sunlight into electricity. The electricity is stored in the battery. A cell phone or an MP3 player can be plugged into it. (In this passage, what does 'it' refer to in the last

172. ## physics

a 4 kg object moving with a speed of 7.8 m/s collides with a 16 kg object moving with a velocity of 7.6 m/s in a direction of 22 degrees from the initial direction of motion the 4 kg object. what is the speed of the two objects after the collision if they

how much would a trapizoid worth if the triangle eqauls 1/3

174. ## english

What are the adjectives in this sentence? A giant sequoyia is ancient.

175. ## English

a living thing which grows in earth: plant (What does "in earth" mean? Does it mean under the ground or on the ground?)

194. ## math

the seasonal operating cost in dollars per square meter of grain bed for such a dryer consists of the cost of heating the air. heating cost=0,002Q(delta T) and blower operating cost Blower cost=2.6^(10^-9)Q^3 where Q= air quantity deliverd through the bed

195. ## statistics

An Urn contains 7 red and 3 white balls. Two balls are drawn in succession without replacement. If the second ball is white, what is the probability that the first ball was white?

196. ## math

what whole number does N stand for if the number sentence bleow is true? [N+5]+[3 times 2]=18

197. ## algebra 1

Hi Ms. Sue can you tell me how you got 2/10 in the equation that I submited a few min. ago the equation was, x + 7/10 = - 1/5

198. ## algebra

The natural stride up a certain staircase has a slope of 3/5, meaning that a run of 5 inches has a rise of 3 inches. The model for a standard staircase is y=(3/5)x Find the rise for a staircase constructed at a mansion which has a run of 12 inches. Not

199. ## Spanish

14. Voy a comprar tenis nuevos en ___________. a. el joven b. los zapatos c. la zapateriá d. el gimnasio Not sure... 15. ¿De quién es ______ suéter? a. este b. esta c. su d. esos Either A or B... Thanks -MC

200. ## math

franklin school has 3 boys for every 4 4 girls in fifth grade . there were 140 students in the fifth grade. A.how many are boys B.how many are gorls

201. ## Pre Alg.

How do you figuer H/9.6=5/12?

202. ## algebra 1

Hi Ms. Sue again, I hate to be a pest but how did you get the two in 2/10, I am really brain dead today.

203. ## physics

suppose that a horizontal force of 0.7 n is required to pull a 5.0 kg block across the table at constant speed. what is the initial speed of a 20 g bullet, fired horizontally into the block, if the bullet imbeds in the initially stationary block and causes

the store were janice and kanisha shop is having a sale on summer clothes.each of the girls want to buy 2 pairs of shorts and three tops.if shorts and tops are on sale for $11.50 each, what is the best estimate of how each girl wold spend?circle answer asked by cindy 205. ## lan systems Post your response to the following: Explain what kind of network you are on at work or at home. If you do not have access to a network, ask a friend or family member to explain the type of network they have access to. What benefits does the network asked by Anonymous 206. ## Chemistry-Help!! If I have 10mL of 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution? asked by Madison 207. ## Chemistry How many molecules are in 15g CH4? How do you figure this out? asked by Lauren K. 208. ## 12th grade A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, and the radius of the orbit is 5.30 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has asked by Anonymous 209. ## physics In a tennis serve, a 0.070 kg ball can be accelerated from rest to 35 m/sec over a distance of 0.80 m. find the magnitude of the average force exerted by the racket on the ball during the serve asked by Kay 210. ## physics A model rocket is launched with an initial velocity of 10 m/sec at an angle of 45° to the ground. What is the total time of flight? What is the highest point in its trajectory? What is the horizontal range achieved? asked by Kay 211. ## physics Two masses m1 and m2 are suspended from the ceiling by two string segments. What is the tension in each string segment? Let m1 = 10 kg and m2 = 20 kg. asked by Kay 212. ## math the regular season for professinal baseball is 162 games.a player was bat in each game ,and he played in 2/3 timesof the game. a. how many times was the player at bat during the season? b.the player hit 0.250,which means he got a hit 25% of the time,or oce asked by cindy 213. ## math a circular pool has a radius of 8 ft. what is the longest distance a swimmer can swim without making a turn? asked by Anonymous 214. ## Industrial Hygiene How much vinyl chloride is needed to fill a tank of 250 liter with a 13.5 solution? asked by Don 215. ## algebra 4(3-u)+u=22+2u what does u equal? asked by haley 216. ## reading need help to unscramble compound words asked by aniah 217. ## chemistry 25.00 mL of a 2.00 M solution of NaCl is diluted to a final volume of 100.0 mL. What is the concentration of NaCl in the final solution? asked by Lia 218. ## physics 5. A truck is travelling at a constant velocity of 16.7 m/s. A pumpkin is shot vertically (at a 90o angle to the ground)at a velocity of 120. m/s from the bed of a this pickup truck. The bed of the pickup truck is one meter high (from the ground). Complete asked by Alex 219. ## math HOW CAN YOU REMOVE ONE OF THE NUMBERS FROM 68 AND HAVE 18 LEFT? asked by JoAnn 220. ## chemistry 2 Na202 + 2H20 -> 4NaOH + 02 When 200.g of Na202 were reacted, 32.0 g of 02 were collected. The yield of 02 collected was (how many percentages) asked by andy 221. ## science convert 270g to moles asked by wilson 222. ## marketing In what stage of the product life cycle is cake mix in the U.S.? asked by Randa 223. ## Childcare Mangment i have 2 questions 13. Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. What percent of the calories come from fat? A. 30 C. 70 B. 40 D. 80 i think is B 5. asked by Brenda 224. ## physics A 3 kg ball is thrown horizontally off a 78.5 m cliff with a speed of 12 m/s. How long does the ball stay in the air? asked by Audie 225. ## physics A 3 kg ball is thrown horizontally off a 78.5 m cliff with a speed of 12 m/s. How long does the ball stay in the air? asked by Audie 226. ## Physics-Please check if I did this correctly I posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the asked by Joey 227. ## 12th grade How many moles are in 8.8*10 to the 34 asked by yuo 228. ## Physics Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare asked by Annie 229. ## math How do you multiply -3/5 by -3 and write it as an improper fraction? asked by Alice 230. ## physics A block lies on a smooth plane tilted at an angle è = 28.5° to the horizontal. Ignore friction. (a) Determine the acceleration of the block as it slides down the plane. 1 m/s2 (b) If the block starts from rest 9.40 m up the plane from its base, what will asked by An 231. ## spanish how do you say "i need help now" in spanish asked by crystal 232. ## algebra the length of a pool is 30 meters greater than the width. if the area is 1000 square meters, find the dimensions of the pool. asked by mike 233. ## math George ran 3/8 mile on Sunday and 2/8 mile on monday. How much farther did george run on sunday than on monday? asked by areonna 234. ## math Billy goes to soccer at 12:49 he ends at 3:45 ..... how many minutes or hours is soccer practice asked by olive 235. ## MATH N X 15 N=20,25,30 HOW DO YOU EVALUATE THE EXPRESSION FOR EACH VALUE OF N asked by Kristy 236. ## english In Peace Like a River by Leif Enger how are Jape Waltzer and Davy Land similar and different? asked by kelly 237. ## Math If a wall is 6th tall and a ladder is leaning against it. The ladder is 8th tall, how far apart is is the base of the ladder away from the wall? asked by Tiara 238. ## algebra Find a pair of complementary angles such that the difference of their measures is 12 degrees. asked by Northeast Middle School 239. ## business Need a web site on if the International Court of Justice was the first world court and what are the procedures of the world court? asked by TONJA 240. ## English Hello. Will you please help me with the following: 1)Which article is to be used in "This event caused a/the exodus of British citizens." 2)Is "get acquainted with" possible with inanimate nouns (facts, situation, idea, concept)? 3)Is it possible to say asked by Ilma 241. ## 7th grade 4 reasons europeans came to the coloines asked by Anonymous 242. ## Social Studies i need help on some questions first question: What does the democratic government provide to the country hope you can help me please and thank you asked by Need Help! 243. ## 11th grade a yo-yo has a mass of 0.20kg and i attached to a string 0.8m long. what isthe velocity of the yo-yo? asked by Anonymous 244. ## algerba..plz help A 400 g solution is 25% salt. How much salt must be added to produce a solution that is 40% salt? asked by abc 245. ## algebra what three digit number is less than 300 and the ones digit is 4 times the hundreds digit and the tens digit is 5 more than the hundreds digit and the sum of the digits is 17 asked by Karen Nelson 246. ## Math Calculate the monthly payment by loan amortization table Loan$26,000 Down payment $5,000 11% 36 Months asked by Debby 247. ## advance language arts base: abase:: prolific:soporific mobile:immobile parley:parliament fortification:fortify CAN ANYONE HELP?? asked by irene 248. ## Chemistry What is the theoretical justifaction for the order of reaction rates of a cycloalkane, cycloalkene, and benzene? asked by Olivia 249. ## physics A 0.480 kg pendulum bob passes through the lowest part of its path at a speed of 3.10 m/s. (b) When the pendulum reaches its highest point, what angle does the cable make with the vertical? The cable of the pendulum is 80 cm or .8m. asked by kaitlyn 250. ## MATH If the corresponding angles of 2 polygons are congruent and the lengths of the corresponding sides of the polygons are proportional, the polygons are... a. Regular b. Congruent. c. Symmetric d. Similar asked by Dobby 251. ## 7th grade i need help in Math with Fractions can i have some pointer to remember it. P.s. Thank you guys if u can help asked by Mj 252. ## spanish how do you say this sentence in spanish ..How much do you wiegh. asked by olive 253. ## chemistry What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa? asked by lavonne 254. ## chemistry A sample of ammonina gas at 65.5 degrees celsius and 524 torr has avolume of 15.31 L. What is it's volume at -15.8 degrees celsius and its pressure is 524 torr? asked by lavonne 255. ## 5th grade compkete the pattern 25____61____97 asked by johnathan 256. ## physics a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks! asked by i neeeeed helpp!! 257. ## physics the maximum height a typical person can jump from a crouched start is about 60cm. By how much does the gravitational potential energy increase for a 72kg person in such a jump? Where does this energy come from? I know the formula for gravitational asked by physics 258. ## 8th grade math Matt has twice as many quarters as dimes in his coin collection. If the dimes and quarters together total$9.00 how many of each kind of coin does he have?

What is the thesis of how would Bryan evaluate the ambitions of Albert Beveridge?

260. ## Social Studies Urgent

what freedoms does the people have when the country is run under a socialist government please and thank you

261. ## social studies

In world war ll did hitler die in his bunker?

262. ## Physics

At t = 0, a 785 g mass at rest on the end of a horizontal spring (k = 125 N/m) is struck by a hammer, which gives the mass an initial speed of 2.70 m/s. (a) Determine the period of the motion. T= .4979201367s Determine the frequency of the motion. f=

263. ## music

In a round with 4 people singing Jingle bell rock who would end last if person 1 and 2 start at the same time then person 3 is next then person 4 is last?

264. ## physics

A 0.480 kg pendulum bob passes through the lowest part of its path at a speed of 3.10 m/s. (b) When the pendulum reaches its highest point, what angle does the cable make with the vertical? The cable of the pendulum is 80 cm or .8m.

265. ## social studies

Did someone kill Hitler in world war ll?

266. ## english

I am i stupid?

Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare

268. ## Math

If the length of a rectangle is x - 5 and the area is 4x(exponent2) - 12x +9, what is the width?

269. ## Physics

posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the

270. ## stastics

johns runs a computer software store.he counted 128 people who walkrd by his store in a day , 60 of whom came into the store, of the 60 only 21 brought something in the store.estimate the prob that that a person who walks by the storeenter the store .round

271. ## science

How to write 5,800 million metric tons in standard form and in scientific notation?

272. ## statistics

the quality control inspector of a production plant will reflect a batch of syringes if two or more defectives syringes are found in a random sample of ten syringes taken from the batch of two percent defective syringes.what is the probability that the

273. ## Math 7th

Mrs.Flores bought 5 pounds of cheese. He used 2 1/4 pounds for cheese spread. 1 3/4 pounds for nachos and the rest for sandwhichs. Write a procedue that could be used to find the number of pounds of cheese he used for sandwhiches

274. ## algebra 2

A flagpole at a right angle to the horizontal is located on a slope that makes an angle of 12 degrees with the horizontal. The pole's shadow is 16 meters long and points directly up to the slope. The angle of elevation of the sun is 20 degrees. Draw the

275. ## math

if possible, change each comparison of concentrate to water into a ratio. If not, explain why. a. the mix is 60% concentrate. b. the fraction of the mix that is water is 3/5 c. the difference between the amount of concentrate and water is 4 cups

276. ## math

Sum of a 3 digit # is 24. Ones digit is 2 more than 2xs the hundred dig. Tens dig is 1 more thn 3xs the hund dig. Wats the #??

277. ## science

How to write 5,800 million metric tons in standard form and in scientific notation?

278. ## MATH

Which of the following has 2 parallel bases that are not polygons? a. Cone b. Prism c. Pyramid d. Cylinder

279. ## Psychology

The question is true or false. Language that elicits defensiveness usually involves giving both individuals equal power. I know that when you remove defensiveness then there is equal power, but I don't know what 'elicits' means in this sentence.

280. ## Calculus

What is the linearization of f(x)=e^x at x=1?

281. ## Algebra

find the product of (x^2 - 3x + 5) with the quotient of (10x^6 - 15x^5 - 5x^3)

282. ## algebra

50e-.367x=125

283. ## Chemistry

Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

284. ## chemistry

calculate the number of joules released when 175.0 grams of water are cooled from 100.0 to 27.5 celcius

285. ## MATH

The path of a large stone fired from a catapult can be modeled by y= -0.00545x^2+1.145x where x is the distance the stone traveled (in yards) and y is the height of the stone (in yards). 1. find the distance the stone traveled. 2. find the maximum height

286. ## Calculus

If the volume of a cube is increasing at 24 in^3/min and the surface area of the cube is increasing at 12 in^2/min, what is the length of each edge of the cube? I know that dV/dt=24 and ds/ds=12. I also know that Volume=s^3 and Surface Area=6*s^2, but what

287. ## Math 7th

Mrs. Jones bought 3 1/2 pounds of ajita meat at $2.50 per pound, 1 3/4 pounds of pinto beans and a package of tortillas for$2.23. She gave the cashier 20.00. What other information is needed to find the correct change Mrs.Jones will receive?

288. ## MATH urgent!!!

My problem: From 1992 to 1996, the annual income for all the private golf courses in the United States can be approximated by the model: I=59t^2+2254, where I is the annual income in millions of dollars and t is the year, with t=0 corresponding to 1990. 1.

289. ## Calculus

A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6 , .8), the particle has horizontal velocity dx/dt=3. What is its vertical velocity dy/dt at that point? I don't know what equation to use or

290. ## grammar

what the simple predicates male lion have shagy manes

291. ## physics

Two stones of different masses are thrown straight upward one on earth and on the moon (where gravity produces an acceleration of 1.67m/second squared) Both reach the same height. if the stone on the moon has an initial speed v, what was the initial speed

292. ## College Chemistry Really Need Help

THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)

It is greater than 7 tens and less than 8 tens. The number. Has 4 ones. Write the number word

294. ## healthcare finance

Suppose that a clinic has third-party payer revenues of $10,000 a day. On average, it takes the clinic 50 days to collect from its payers. What will be the steady state receivables balance? a.$ 10,000 b. $50,000 c.$250,000 d. $500,000 e.$750,000

9.8c + 8d - 4.6c + 2.9d simpilfy the expression

296. ## Chemistry

A 50.0-mL sample of 0.10 M HNO2 is titrated with 0.10 M NaOH. What is the pH after 25.0 mL of NaOH have been added?

297. ## Chemistry

The volume of a balloon is 120L at 25 degrees celcius. What is it at 75 degrees celcius?

298. ## Pre-Calc

I am seeking help with this problem Please...Thank you! Find the point on the line y=x+3 in the xy-plane that is closest to the point (3, 2)

299. ## math

4/6 + 5/6 THEN MUITLP

300. ## English

· Read two of the five paragraphs on the second page of this appendix. Write a brief paragraph of about 150 words in which you do the following: · o Identify which paragraph was more effective and analyze why this is so. o Include a discussion of

301. ## Pre-Calc

Can someone please be kind and show me the steps on this? Thanks Find the equation of the circle centered at the origin in the uv-plane that has twice the circumference of the circle whose equation equals (u-5)^2 + y^2 =9

302. ## Physics

A convex mirror with focal length of -20 cm forms an image 12 cm behind the surface. Where is the object located as measured from the surface?

303. ## algebra

how do I figure out the formula for graphing of y=1/4x. I do not understand this at all

304. ## english

I need two examples where in the book Huckleberry finn. Huck doesn't believe in himself or he is having self doubt. does anyone know an example or two where this happens in the book? thanks

305. ## CHOIR

MY TEACHER WANTS US TO PRACTICE TO SINING BUT I LEFT MY MUICS ON THE BUS WHAT SHOULD I DO

306. ## math

The net is 3 feet high. The distance from where the ball is hit to the net is 24 feet. Assume the ball travels in a straight line. At what height must a tennis ball be hit so that it will just pass over the net and land 21 feet away from the net on the

318. ## physics

I have a capacitance of 5.75e-10 What is it in Farads?

319. ## PHYSICS

The rms speed of a sample of gas is increased by 8% . What is the percent change in the temperature of the gas? What is the percent change in the pressure of the gas, assuming its volume is held constant? PLEASE HELP

320. ## Earth's Heat Resources

list 3 examples of natural activities or events that carry thermal energy from within Earth directly to Earth's surface. I don't get what kinds of activities its referring to.

WHATS A VERB

322. ## Math question

I don't understand how to find the aproximate area of a shaded region This problem has a big cirlce with 1/4 shadded with a radius of 20 cm. the answer chocies are A. 90 cm squared B. 270 cm squared C. 314 cm squared D. 1.256 cm squared how do I find the

323. ## ENGLISH

Peace Like a River by Leif Enger HELP PLEASE!? In Peace Like a River by Leif Enger how are Jape Waltzer and Davy Land similar and different?

324. ## Earth's Heat Resources

How is the energy that reaches earth's surface returned to space? is is by radiation?