# 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?)

176. ## Physics

I need help solving for q. Here is the formula. F=(k*q*2q)/r^2

177. ## algebra

1. 100x^2-9 2. 8x^2+14x+6

178. ## Algebra

The points L(4, 0),M(10, 0), and N(7, 5) form LMN.What is the sum of the slopes of the three sides of the triangle?

179. ## university of phoenix

I need 700 words explaining what your point of view will be and what plan to accomplish in your paper

180. ## Alg I

Three towns A, B, and C lie on a straight road in that order.The distance from B to C is 6 miles more than twice the distance from A to B.The distance from A to C is 2 miles more than four times the distance from A to B.What is the distance from A to B?

181. ## algebra

P(1, 3) and R(5, 5) are the endpoints of a diagonal of the rectangle PQRS. Which sides of the rectangle are parallel to the x-axis? To the y-axis? What is the perimeter of the rectangle?

182. ## History quick question

Did people back in the 1700's use financial aid/assistance.?

183. ## Chemistry

You know the solution forms a precipitate when? (A) when it changes color (B) when you can’t see through it (C) because it bubbles (D) you have stirred it for more than 5 minutes (E) the solution thickens

184. ## 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 H2SO4?

185. ## Chemistry

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

186. ## 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

187. ## accounting

Does the flexible budget term mean A series of budgets for varying rates of activity?

188. ## algebra 1

I need someone to help me fiqure this equation out and then explain how you got the answer. x + 7/10 = -1/5

189. ## HIS 135

Interview someone who remembers the Watergate scandal and Nixon’s impeachment and resignation. (Family members, friends, co-workers). Ask the following questions to the person you are interviewing: - How old were you at the time of the Watergate scandal?

190. ## math

a bag has 6 marables in it.each marable is either red,blue,or green. what is the least number of marables that you must pull out of the bag to be sure you have 2 marables the same color.

191. ## science

why are green plants important to humans?

192. ## physics

At the local grocery store, you push a 13.9 kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 12.0 N, you accelerate the cart from rest through a distance of 2.00 m in 3.00 s. What was the mass of the dog food?

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

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?

207. ## Chemistry

How many molecules are in 15g CH4? How do you figure this out?

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

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

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?

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.

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

213. ## math

a circular pool has a radius of 8 ft. what is the longest distance a swimmer can swim without making a turn?

214. ## Industrial Hygiene

How much vinyl chloride is needed to fill a tank of 250 liter with a 13.5 solution?

215. ## algebra

4(3-u)+u=22+2u what does u equal?

need help to unscramble compound words

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?

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

219. ## math

HOW CAN YOU REMOVE ONE OF THE NUMBERS FROM 68 AND HAVE 18 LEFT?

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)

221. ## science

convert 270g to moles

222. ## marketing

In what stage of the product life cycle is cake mix in the U.S.?

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.

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?

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?

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

How many moles are in 8.8*10 to the 34

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

229. ## math

How do you multiply -3/5 by -3 and write it as an improper fraction?

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

231. ## spanish

how do you say "i need help now" in spanish

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.

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?

234. ## math

Billy goes to soccer at 12:49 he ends at 3:45 ..... how many minutes or hours is soccer practice

235. ## MATH

N X 15 N=20,25,30 HOW DO YOU EVALUATE THE EXPRESSION FOR EACH VALUE OF N

236. ## english

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

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?

238. ## algebra

Find a pair of complementary angles such that the difference of their measures is 12 degrees.

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?

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

4 reasons europeans came to the coloines

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

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?

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?

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

246. ## Math

Calculate the monthly payment by loan amortization table Loan $26,000 Down payment$5,000 11% 36 Months

base: abase:: prolific:soporific mobile:immobile parley:parliament fortification:fortify CAN ANYONE HELP??

248. ## Chemistry

What is the theoretical justifaction for the order of reaction rates of a cycloalkane, cycloalkene, and benzene?

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.

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

i need help in Math with Fractions can i have some pointer to remember it. P.s. Thank you guys if u can help

252. ## spanish

how do you say this sentence in spanish ..How much do you wiegh.

253. ## chemistry

What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa?

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?

compkete the pattern 25____61____97

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!

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

308. ## Pre-calc

Can someone please show me the steps to this problem...Thanks in advance. Let f(x) = Ð9xÐ. For the area above the x-axis and between the lines x= -9 and x=18 a. draw and label a sketch with the area shaded b. find the area of the region in the xy-plane

309. ## SCOIL STUDIES

WHAT WAS THE ALOMO LIKE

explain how you would decide whether the product of three numbers is positive or negative

311. ## Pre-CALC

Can anyone help me with this problem step by step please... Find the area inside the ellipse in the xy-plane determined by the given equation x^2 y^2 ____ + ___ =1 10 25

312. ## disease

WHAT IS CANCER AND HOW DOES ITSTART

313. ## Chemistry

An unlabeled bottle containing a solution was found in the lab. It contains one of the following: AgNo3, CaCl2, or Al2(SO4)3. Describe how you would test the solution to determine which solution it is. Include equations in your answer.

What are some of the similarities between the Israelites and Mesopotomians?

315. ## math

ascuba diver is 180 ft below sea level and rises to the vsurface at a rate of 30 ft/min.How long will the diver take to reach the surface?

MY TEACHER SAID WE HAVE TO READ SHIOLH AND HAVE ONLY 1 WEEK WHAT TO DO ABOUT 16 CHARTER WHAT TO DO

327. ## chemistry

Explain jhow you would make 400 milliliters of an 18% solution from dry glucose and distilled water.

328. ## Math

An equilateral triangle s divided into 4 congruent equilateral triangles. What method can be used to find the area of the larger equilaterl triangle give the area of one of the smaller triangles? F. Multiply the area of the larger equilateral triangle by 4

329. ## Physics

While traveling to school at 27 m/s your car runs out of gas 15 hm from the nearest gas station. If the station is 16m above your current elevation, how fast will the car be going when it reaches the gas station? Ignore friction.

330. ## Earth's Heat Sources

most of earth's landmass is in the northern hemisphere. how might this influence Earth's overall albedo during a)June b)January I really don't get this question.

331. ## Geometry

In an equilateral triangle, what is the difference between the sum of the exterior angles and the sum of the interior angles?

332. ## physics

brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. for what other angle of launch at the same speed would the projectile land just as far away?

333. ## calculas

if the length is decreasing at a rate of 2 in./min. while width is increasing at a rate of 2 in./min., what must be true about area of the rectangle

334. ## math

a roof is 2.5 feet vertically and 12.3 feet horizontally. what is the grade of the roof?

335. ## math help!

bernardo folds the 2 top corners of a rectanglular piece of paper to form 2 conguent triangles and an isosceles trapezoid. The triangles each have an angle that measures 65. what are the measures of the 2 top angles in the trapezoid? a. 25 and 25 because

336. ## math

how do you explain how all triangles have lines of symmetry

337. ## Math

Use lagrange multipliers to find the point on the plane x-2y 3z-14=0 that is closet to the origin?(try and minimize the square of the distance of a point (x,y,z) to the origin subject to the constraint that is on the plane) Help me please!

338. ## economics

what is the history on credit cards?

339. ## HEAT

A container holds a quantity of liquid nitrogen at a temperature of -200 degrees C. Explain how each of the following could be used to warm up the nitrogen. a)ice cubes b)hot water bath c)bubbling room air through the liquid All these substances contain a

340. ## Physics

A pendulum is constructed of a 6.7 gram mass suspended on a 55cm thread. The mass is displaced vertically 55 cm to a point exactly horizontal from the top of the thread and released. The mass swings down and is cut directly above the mass when the mass is

341. ## calculas

find the perimeter of the rectangle with maximum area that can be inscribed in a semicircle of radius 2 ft. if two of its vertices are on the diameter of the semicircle and the other two are on the semicircle.

342. ## 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?

343. ## science

how do you show staregy

344. ## calculas

x and y are both variables that are differentiable with respect to t, but not to each other. however, there is a relationship between them: x^2=3y^2+7. we also know that x changes with respect to t at a steady rate of square root of 12 (dx/dt=x'= square

345. ## Math

Determine whether each general term defines a geometric sequence. Explain. a) f(n)= 2/(3n+1) b) f(n)= 11/(13^n)

346. ## Math

A string is cut in half,and one of the halves is used to bundle newspapers. Then one fifth of the remaining string is cut off. The piece left is 8 feet long. How long was the string originally? Please work this out. The anwser is 20 ft. THANKS

347. ## MATH

K we are learning about Linear Equations and Graphs. And I'm doing the Slope-point Form, but I'm kind of having troubles with it. Liek I don't really get how to change the slope point form to the slope intercept one. Here is an example: y-5 = -1/2(x+4) y-5

348. ## geometry

if mBA=44 find the measure of mBA

349. ## Re:Social Studies Urgent

socialist government: who is eligible to vote i've been searching this forever well most of all the socialist question need help on. please help and thank you

350. ## Math

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

351. ## writting

hoW do you righ a letter to A GAINT ALIEN THAT NEEDS SOARLAYS BUT TRaveliing anget said the moon

352. ## MATH

Which of the following is NOT true? a. -3 > -8 b. -8 < -4 c. -8 < -9 d. -7 > -8

353. ## world studies

when & why did the cultures of Egpyt & Nubiabegin to mix?? plz help

354. ## Calculus

A rectangle is insribed between the parabolas y=4(x^2) and y=30-x^2. What is the maximum area of the rectangle? Domain: [-3,3] Range:[-2, 40] THANK YOU!

355. ## chemistry

Explain what is required to create a buffer that needs to protect the pH between 8.1 and 8.5

356. ## Social Studies Urgent

under a socialist government, who make the decisions? can citizens take part in the decisions? or the government makes all the decisions please help and thank you

357. ## chemistry pap

How many atoms of lead (Pb) are present in 0.75 moles?

358. ## Social

Why is the Plain of Abraham such important event in Canada's history?

360. ## English

1.Most clarinets (are, is) made of wood. 1.are

Does the size of the planet affect the time it takes for one revolution around the Sun? The answer is No, but why is it because of the gracity pull from the Sun? Thank you

what is a good web site to find a fill in the blank persuasive essay format! please reply ASAP this is due thursday......i only have 2 more days!!!!!!!!

363. ## science

whatis the deiffecnce between revoule and rotaian

364. ## Math

A 720ml container holds a mixture of red, yellow, and white paint in a 5:3:12 ratio. How much more red paint than yellow paint is present in the mixture?

365. ## English

1.These reeds (come, comes) from cane plants. come

366. ## physics

what happens to the force of frictionif the coefficient of friction was reduced by one thrid

367. ## college

A computer manufacturer is about to unveil a new, faster personal computer. The new machine clearly is faster, but initial tests indicate there is more variation in the processing time. The processing time depends on the particular program being run, the

368. ## Chemistry Intro

If the solubility of alum is 1g @ 1 degree celcius and 1.7 g at 6 degree celcius how much alum (KAl(SO4)2.12H20) would you expect to dissolve at 5.5% C?

369. ## science

does the moon have light

370. ## Chemisty.....Help =))

What is the molarity of ZnCl2 that forms when 30.0g of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL . (please explain step by step I have no clue!) Zn(s) + CuCl2(aq) --> ZnCl2(aq)+ Cu(s)

371. ## Math

A family is moving and has a number of electronic devices in the same packing crate. One of the devices beeps every 8 minutes, another device beeps every 10 minutes, and a third device beeps every 12 minutes. If all the devices beeped together at 3:00pm,

372. ## Physics

A 30 N fishing pole is 2.00 m long and has its center of gravity .350 m from the heavy end. A fisherman holds the end of the pole in his left hand as he lifts a 100 N fish. If his right hand is .800 m from the heavy end, how much force does he have to

373. ## Chemistry...Help!!

To what volume should you dilute 131 mL of an 8.20 M CuCl2 solution so that 49.0 mL of the diluted solution contains 4.53g CuCl2 ?

374. ## poetry

can you teach me poetry

375. ## science,

how are sesons caused

376. ## Pre-Calc

Seeking step by step help with this question...Thank you much. Let f(x) =|9x|. For the area above the x-axis and between the lines x= -9 and x=18

377. ## math

mike has two mats in the shape of triangles. the scale factor of the two mats is 7/9. what is the ratio of the perimeters?

The diameter of a penny is 3/4 in. How many pennies are needed to form a row 12in. long? Also to find the circumference of a circle do you use the radius or diameter x 3.14?

379. ## College Physics

A vacuum cleaner has a measured sound level of 75.7 dB. What is the intensity of this sound? Answer in units of W/m^2

380. ## Chemistry

Experiment on Titration of Acids and Bases Suppose some deionized water was left in the buret before it was filled with the oxalic acid solution you were using as a primary standard. When you perform the standardization of sodium hydroxide in Part 3, how

381. ## Physics

A convex lens of focal length 10 cm forms image of object placed 30 cm in front of the lens. Find the magnification?

382. ## Physics

A spherical concave mirror has a radius R=360 mm forms an image of a h(object)=12 cm high object located d0=p=0.9 m from the vertex of the mirror. Find the position di=q(cm) and the height cm of the image.

383. ## Math help

It has been found that 60 percent of homes subscribe to a cable service including the program "Cooking with Math". However, of these subscribers, 18 percent never watch "Cooking with Math", while 15 percent claim to watch it more than 5 times per week.

384. ## Finite Math

What interest rate, compounded monthly, would you need to be paid in order to grow a $2000 investment into$3500 over a five year period?

385. ## History/ English

I have to write a thesis statement and a prompt for my research paper and my topic is the Tet Offensive, how do i write a good one? I don't even know where to begin!

What interest rate, compounded weekly, would you need to be paid in order to grow an $8000 investment into$12,000 over a ten year period?