# Questions Asked onFebruary 7, 2011

1. ## media

In addition to newspapers, briefly describe the evolution of movies, television, Internet, books and magazines, and media companies throughout the last century

2. ## HSM 240

I can not even get started on this - anyone have any ideas to throw me? It is due today, but I'm sure I will be turning it in late. Writing Assignment: “Evaluating Eligibility Rules” The purpose of this assignment is to assess whether or not students

3. ## cjs 200

I am suppose to provide statistice for crime and population in at least 2 prisons in my area. I have tried the missouri department of corrections website and various search phrases and cannot find anything. any suggestions on phrases? thank you

4. ## chem

combustion analysis of a 285.7 mg sample of a hydrocarbon produces 880.8 mg of CO2 ans 405.7 mg of H2O. What is the empirical formula of the compound? a rough measurement of the molecular weight indicates it is a little over 100mg/mol. what is the

5. ## chemistry

A person uses 1800 {\rm kcal} to run for 2.4 {\rm h}. Convert the energy for running to the following energy units: how many calories

6. ## Physics

If 200g of water at 20˚ C is combined with 100g of water at 80˚ C, what is the final temperature of the 200g of water? How do you do this??? steps by steps??

7. ## criminal justice

Sorry about that. I will look at those right now. I have chosen the three prisons that I would like to provide the statistics for but it's just getting individual prison instead of an annual report. thank you,

8. ## Psychology

can anyone help me with this. I can't think of anything or explain to me. Post an example of a simple experiment of your own creation by following this format: I would like to investigate the effects of _____________ on this behavior: _____________. Half

9. ## English grammar

Did I write this sentence right? Should there be an apostrophe in the word reader's? Paragraph three is missing colorful vocabulary that would catch the reader’s attention.

10. ## physics

a worker drives a .551 kg spike into a rail tie with a 2.55 kg sledgehammer. The hammer hits the spke with a speed of 62.1 m/s. if one fourth of the hammers kinetic energy is converted to the internal energy of the hammer and soike, how much does the total

25. ## Math

Coould someone please let me know if I did this equation correctly. This question relates the topic of "Are you Sure It's Fat Free". To analyze the protein content I used 4 calories per gram of protein, rather than the 9 calories for gram fat. (Chunk Light

26. ## Chemistry

how to figure The grams of protein in 1 cup of soup that has 98 {\rm Cal} with 6 {\rm g} of fat and 8 {\rm g} of carbohydrate

27. ## Physics

Skater N, 58.9 kg, is moving north at a speed of 7.8 m/s when she collides with Skater E, 72.6 kg, moving east at 3.5 m/s. The two skaters are stuck together. In what direction and with what speed do they move after the collision?

28. ## Physics

Skater N, 58.9 kg, is moving north at a speed of 7.8 m/s when she collides with Skater E, 72.6 kg, moving east at 3.5 m/s. The two skaters are stuck together. In what direction and with what speed do they move after the collision?

29. ## Physics

Read each statement below. For each situation, calculate vi, vf, pi, pf, the impulse vector F􏰁t, and the amount of force needed for the change to occur. All situations refer to a truck with a mass of 2840 kg. 1. The truck has a velocity of 8.30 m/s and

30. ## Stats- NEED HELP

According to the Census Bureau publication Current Population Reports, the probability distribution for household size (number of people per household, say X) in the United States is as follows. For the purpose of the next two questions, the experiment

31. ## math

i cannot seem to make this work. If two trains leave the station at the same time, one traveling north and the other traveling south. the express travels 14 mph faster than the local. after 3 hours they are 315 miles apart. what is the rate of each train.

32. ## math

need help. Young salmon hatch in freshwater steams and then migrate downstream to the ocean at the rate of 70 miles in 8 hours. there they live until they reach spawning age. then they return upstream to fresh water to spawn and usually die soon after. on

33. ## science project

This is my first science can you tell me if I have my problem and hypothesis correct? The first time I sent it my hypothesis was wrong. PROBLEM: Does an increase in water temperature affect the velocity of ocean currents? HYPOTHESIS: Increases in heat with

34. ## math

x^3-14x+8 / x-4

35. ## math

x^3-14x+8 / x-4

36. ## Chemistry

3-bromo-3-ethylpentene is treat with HBr what main product does it yield?

37. ## physics

travelling at 90km/hr except for a 30 minute rest stop. Average speed for the trip is 78km/hr. what is the total travelling time and what is the total distance travelled?? thanks

38. ## Stats- need someone to check

Doing this assignment and was wondering if i got the right answers According to the Census Bureau publication Current Population Reports, the probability distribution for household size (number of people per household, say X) in the United States is as

39. ## Physics

An electron moves at a speed of 6.0 x 10^-6 perpendicular to a constant magnetic field. The path is a circle of radius 1.3 x 10^-3m. What is the magnitude of the field. Find the magnitude of the electron acceleration.

40. ## calculus

find the derivative of e^8e^x *8e^x

41. ## statistics

thank you for the answer. Godbless

42. ## chem

Fish-liver oil is a good source of Vitamin A. When 0.1232 g of fish liver oil is dissolved in 500. mL of solvent, an absorbance of 0.724 is recorded. When 0.00167 g of Vitamin A is dissolved in 250. mL of solvent, an absorbance of 1.018 is recorded.

43. ## history

"Song of the South". What New Deal and Great Depression terms are mentioned? How does the song reflect our modern impression of the Great Depression?

44. ## English

Can you please check if these are correct? Thank you. 1) Outline briefly what the Romantics showed an interest in and what they reacted against. Refer then to how they viewed nature and man, with particular reference to childhood. 2) Describe how Kurtz's

45. ## physics

While standing on a bridge 18.5 m above the ground, you drop a stone from rest. When the stone has fallen 2.80 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at

46. ## physics

A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 3.24 s after the stone is dropped. How deep is the hole?

47. ## physics

A woman and her dog are out for a morning run to the river, which is located 3.51 km away. The woman runs at 3.48 m/s in a straight line. The dog is unleashed and runs back and forth at 5.50 m/s between his owner and the river, until she reaches the river.

48. ## physics

A cheetah is hunting. Its prey runs for 4.3 s at a constant velocity of +8.4 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?

49. ## Physics (46)

A 4.67-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.446. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b)

50. ## Physics (49)

An ice skater is gliding horizontally across the ice with an initial velocity of +5.33 m/s. The coefficient of kinetic friction between the ice and the skate blades is 0.0988, and air resistance is negligible. How much time elapses before her velocity is

51. ## PHYSICS!!

Air rushing over the wings of high-performance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps cars hug the track more securely. The coefficient of static friction between the track and the tires of

52. ## physics!

A 1.60-kg bottle of vintage wine is lying horizontally in a rack. The two surfaces on which the bottle rests are 90.0° apart, and the right surface makes an angle of 45.0° with respect to the horizontal. Each surface exerts a force on the bottle that is

53. ## physics :)

A circus clown weighs 875 N. The coefficient of static friction between the clown's feet and the ground is 0.630. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that

54. ## physics! (69)

A damp washcloth is hung over the edge of a table to dry. Thus, part (mass = mon) of the washcloth rests on the table and part (mass = moff) does not. The coefficient of static friction between the table and the washcloth is 0.395. Determine the maximum

55. ## Physics (76)

the weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord.

56. ## Physics GO! (82)

To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 365 N. Neglect any friction between the rope

57. ## physics homework! #92

A small sphere is hung by a string from the ceiling of a van. When the van is stationary, the sphere hangs vertically. However, when the van accelerates, the sphere swings backward so that the string makes an angle of è with respect to the vertical. Find

58. ## Biochemistry

Complete hydrolysis of 25 mM ethyl acetate in an enzyme esterase catalyzed reaction is carried out in a 40 mM NaCl solution buffered by 0.2 M Tris-Cl, pH 9.1. What is the pH at the end of the reaction? (For Tris base, which is the abbreviation for Tris

59. ## Chemistry

A biomass power station burns forestry residue which has 2000 ppm potassium in it and produces 2% ash by weight (think Ive worded that right). I need to find the fraction of K2O in the ash, but only the fraction of K in the fuel as a whole is given.

60. ## english

where did the jim crow laws take place? and why?

61. ## math

how many permutations are there for 4 numbers (0,2,3 and 5) adding up to 25 in 8 turns?

62. ## j

What were the factors that played a significant role in the collapse of Russian control over Eastern Europe?

63. ## physics

When you try to walk too fast on a slippery floor, you slip because walking fast requires you to exert a greater frictional force against the floor than the surface allows. What is the maximum frictional force you can exert against the floor with one foot

64. ## physics

A speedboat starts from rest and accelerates at +1.69 m/s2 for 7.18 s. At the end of this time, the boat continues for an additional 4.55 s with an acceleration of +0.468 m/s2. Following this, the boat accelerates at -0.657 m/s2 for 8.38 s. (a) What is the

65. ## physics

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed

66. ## physics

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed

67. ## physics

A dynamite blast at a quarry launches a rock straight upward, and 2.0 s later it is rising at a rate of 15 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)4.2 s after launch.

68. ## HORTICULTURE

Nutrient acquisition by roots when nutrients are in short supply

69. ## physics

A wrecking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway to the ground is 4.36 s. Find the time it takes for the ball to fall from rest all the way to the ground.

70. ## statistics

Let P(x) be the number of people of height < x inches in the US. What is the meaning of P’(66)?

71. ## chemistry lab

determine the amount of solute needed to make 100ml aqueous solution of NaCl and MgCl2 that will cause a 10 degree change in freezing point. Determine the amounts of solute needed to make 100ml aqueous of AlCl3 and ethanol that will cause a 10 degree

72. ## math-logic

Help with this please. I have to form the contrapositive of each and simplify negation using DeMorgan's rules. a) a->(b or c) my answer: contra(~b or~c)->~a simplified: ~b and ~c->~a b) (A and B)->(~q) my answer: contra (~A or~b)->q simplified:~a or ~b->q

73. ## maths

I am trying to understand what to do here.. need help asap!! Thanks! M Solve the following pair of simultaneous linear equations. 3x + 4y =5 2x + 2y =2 Select the option corresponds to the solution. Select one: x = 9 / 7, y = 2 / 7

74. ## schoolcraft college

a student decides to construct a capacitor using two conducting plates 30cm on each side. He seprates the plate with a paper dielectric 2.5 that is 8*10 raise to the power -5 mmerters thick. What is the capacitance of the capacitor.

75. ## chemistry lab

calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change in freezing point of water. solutes are Al2(SO4)3, KBr, Mg(NO3)2

76. ## chemistry lab

why would it not be useful to just use pure ethanil or pure ethylene glycol as aN ANTIFREEZE SINCE THEIR NORMAL FREEZING POINTS are -114.1 degrees celsius and -12 degrees celsius respectively

77. ## World History

How was the reign of Marcus Aurelius different than that of most emperors?

78. ## chemisty lab

determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

79. ## maths

I'm stuck here don't have a clue what to do. I've read all my school textbooks but it doesn't make much sense!! The numbers after the letters are small figures as in they u3 meaning( u x u x u). Ta! Factorise the expression 5 u3v +15 uv2-10v taking out the

a party suppilies store recored net sales of $423,400 for the year. the store's begining inventory at retail was$105,850 and its ending inventory inventory at retail was $127,020.what would be the inventory turnover at retail,rounded to the nearest tenth? asked by ginny 81. ## spanish ¿Cuál es la forma correcta del imperativo para tú? ¡_____ aquí! (venir) ¿Cuál es la forma correcta del verbo para el imperativo tú? ¡______ a las siete! (salir) ¿Cuál es el imperativo para la forma tú? ¡No ______ ahora! (salir) asked by lauren 82. ## Finance Corporate bonds issued by Johnson Corporation currently yield 8.5%. Municipal bonds of equal risk currently yield 6%. At what tax rate would an investor be indifferent between these two bonds? Round your answer to two decimal places. The answer I keep asked by Shan 83. ## physics The tops of the towers of the golden gate bridge in san Francisco, are 227m above the water. suppose a worker drops a 655g wrench from the top of a tower. if the average force of air resistance is 2.20 percent of the force of free fall what will the asked by shay 84. ## Spanish-Please check my answer Did I answer the question correctly? ¿Qué haces cuando hay un examen grande? Yo estudio cuando hay un examen grande Thank you asked by JessieLynn 85. ## CHEM WHATS IS THE DENSITY OF ETHYLENE GLYCOL IF YOU HAVE A 50ML SAMPLE OF ETHYLENE GLYCOL WITH A MASS OFF 55.505G asked by DENISA 86. ## AP European History What is the relationship between the study of geography and the study of history? What are the advantages and disadvantages of Europe’s geography? Explain the impact of Europe’s geography on European History. This is what I have so far: How are asked by Alex 87. ## phy In a capacitor, you have two plates, one is connected to a battery but other is not, how the other plate become charge ups. asked by ami 88. ## Spanish -Please check 7th grade Please check my answers-I have to say where I just came from and what I have done using forms of venir and acabar de The post office Vengo del correo. Acabo de mandar una carta. The museum Vengo del museo de arte. Acabo de mirar el arte. The hospital Vengo asked by Steven 89. ## Physical science An object is projected vertically upwards and returns to the point of projection 12s later. Ignore air resistance and determine the velocity with which it was projected? asked by Thakgalo sakwana 90. ## Calculus A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. asked by Abigail 91. ## Statistics One of my classmates ask this question and it wasn't answered so now I am asking it and of course we are all struggling with no strong Math background Case 6.4 Maternal Serum Screening Test for Down syndrome Please keep in mind that I do not have a Math asked by Belinda 92. ## Calculus Let f(x) = mx-12 if x is less than -5 = x^2 +5x -7 if x is greater than or equal to -5. If f(x) is a function which is continuous everywhere, then we must have m=_______ asked by Abigail 93. ## Finance Pearson Brothers recently reported an EBITDA of$9.0 million and net income of $2.7 million. It had$2.34 million of interest expense, and its corporate tax rate was 40%. What was its charge for depreciation and amortization? Could I get someone to help me

On one of my tests they are asking me if Symboin pandora has a symbotic reletionshio with the Norway Lobster. In my lesson the answer is yes but with the NORWEIGAN lobster. Is this a typo or are the two lobsters the same lobster but with different names? I

95. ## phoenix

The general term for market structures that fall somewhere in-between monopoly and perfect competition is __________.

96. ## Mathematics

For all real and positve numbers p and q, the following identity holds: (p^1/3 - q^1/3)(p^2/3 +(p^1/3)(q^1/3) + q^2/3) = (p - q) Does this identity still hold for negative p and/or q?

97. ## English

Can you please check my sentences? Thank you. I'd rather you went to bed early tonight. 2) I'm used/was used to drinking a lot of water in the morning. 3) I'd rather go to the dentist today than tomorrow. 4) He asked me if I could leave him a message on

98. ## math

Find the volume of water in a fish tank that is 4 m long, 1.7 m wide, and 54 cm deep?

99. ## algebra

given a mean of 8 and a standard deviation of 0.7 what is the z-score of the value 9 rounded to the nearest tenth

100. ## english

use injustice in a sentence

101. ## AP Calculus

Determine whether Rolle's Theorem is valid f(x) = 3 - |x - 2| for [-1, 5] if so, find c. if not, tell why.

102. ## physics

By what factor is the resistance of a copper wire changed when its temperature is increased from 20¢ªC to 120¢ªC? (the temperature coefficient of resistivity for copper = 3.9 ¢¥ 10‑3/C¢ª)

103. ## Algebra 1

The body mass index I can be used to determine an individual's risk for heart disease. An index less than 25 indicates a low risk.The body mass index is given by the formula, or model, I=700w/h2, which w-height in inches. Frances weighs 166 pounds and

104. ## statisics

A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.

105. ## algebra

You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a$38,250 small business loan. These loans must be repaid in full within 10

106. ## Maths

Two polygons have te number of their sides in the ratio 1:3.The sums of their interior angles are in the ratio of 4;1. Find the number of sides of each polygon.

107. ## Chemistry

A fish tank holds 40 gallons of water (density 1.00g/mL) when full. What is the mass of the water in kilograms (kg)?

108. ## statistics

According to the Smart magazine, 70% of smokers started smoking before the age of 18. Suppose 10 smokers are randomly selected and the number of smokers who started to smoke before the age of 18 is recorded. a) explain why this is binomial experiment. b)

109. ## physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.1 µC?

110. ## theory of dressmaking

what is disposal of fullness

111. ## math

If a rectangular prism's length is doubled, it's width quadrupled and it's height stays the same, what is the ratio of the new volume to the original volume?

112. ## critical thinking

help finding fallacies Water extinguishes fire. Oxygen is a part of water. Therefore oxygen extinguishes fire.

113. ## Economics

Below is the production possibility information of small nations Arboc and Arbez, which can produce two goods, wheat, and coffee. The maximum quantity of each good is shown in the table below. Assume the two nations trade in a world containing many small

114. ## English

Hello. Please help me with grammar. I know that "consider" is often used with "be" (for example, I consider her to be beautiful. They consder the plan to be very helpful.) Is it possible to use any other verb in this pattern, for example, "They conser the

The local school system asks you to submit a proposa to do pre-employment physicals for sixty bus drivers. Wha financialor accounting inrmation do you need to submit a proposal? What will you charge the school bus system?

116. ## Micro economics

Below is the production possibility information of small nations Arboc and Arbez, which can produce two goods, wheat, and coffee. The maximum quantity of each good is shown in the table below. Assume the two nations trade in a world containing many small

117. ## geometry

Figure ABCD is a square. Angle B measures (15x-13)Find the value of x.

118. ## Chemistry

for each of the following balanced chemical equations write all possible mole ratios. Mg+ 2HF---> MgF^2+ H^2

119. ## integrated science

explain the difference between the following three substance carbon (c) carbon dixoide (co2) and oxygen (o2)

120. ## English

"But the cat himself knows and will never confess" is an example of: a. personification b. repetition c. parallelism d. meter I think it's A but I'm not sure

121. ## English

Never belong, never guess, never confess is an example of: a. repetition b. parallelism c. rhyme scheme d. assonance I think it's B but I'm not sure.

122. ## English

Hello. Please tell me if it is possible to say: The government plans to "grant help to" the umemployed. Or is it "give help to/provide help for"? Thank you very much for your answer.

123. ## Economics

Below is the production possibility information of small nations Arboc and Arbez, which can produce two goods, wheat, and coffee. The maximum quantity of each good is shown in the table below. Assume the two nations trade in a world containing many small

124. ## English

All book reviews are written in: a. past tense b. present tense c. future tense d. whatever tense the writer chooses to use. I think it's B. The purpose of a book review is to: a. provide a plot summary b. provide information about the author c. give an

125. ## physics

A diver springs upward from a board that is three meters above the water. At the instant she contacts the water her speed is 9.30 m/s and her body makes an angle of 83.0° with respect to the horizontal surface of the water. Determine her initial velocity,

126. ## algebra 2

suppose a house that costs $270,000 appreciates by 5% each year. in about how many years will the house be worth$350,000? use the equation 350 = (270) (1.05)^x and round the value of x to the nearest year.

127. ## MATH

5x-2y=4 x+2y=7

128. ## English

These are the sentences I'm not sure of. I included the doubts in parantheses.Thank you. 1) Briefly outline the main features of the epic poem. Refer then to the seventh-century (?) epic poem "Beowulf" and to what it celebrates. 2)In the song "Help" the

129. ## math

how do you write 436138.539 in words?

130. ## chemistry

what happens when you put a moth ball in 75-80 degree C tap water?

131. ## Computer Science

Can please someone check my answer: a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by

132. ## math

is the sum of 9/12 and 1/6 grater than or less than 1?

133. ## managerial economics

Final Project A Final Project Is Due The Last Class Session. In Your Final Project, Describe And Answer In Economic Terms A Managerial Decision You Have Knowledge About (For Example One That Has To Be Made At Your Place Of Employment). Some Examples Essays

you have received a business research study done by a consultant for a life insurance company. The study is a survey of customer satisfaction based on a sample of 600. You are asked to comment on its quality. What do you look for?

135. ## Algebra 1

The body mass index I can be used to determine an individual's risk for heart disease. An index less than 25 indicates a low risk.The body mass index is given by the formula, or model, I=700w/h2, which w-height in inches. Frances weighs 166 pounds and

Hi! Just need confirmation. 3(sqrtroot)-27; My answer is -3 because 3 x 3 x 3 is 27. Thank you so much!!

sara is making birthday cards. she takes 1 hour to make 5 cards. on tuesday, sara made 25 cards. how long did sara spend working on the cards on tuesday? how do you the explain answer to a 3rd grader

138. ## physics

a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle?

139. ## physics

a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle?

140. ## English

Hi. I've been learning some new words and have a question about "demarche". As for its diplomatic meaning, everything is clear, but I don't know how to use its meaning "a statement or protest addressed by citizens to public authorities". Do you think it's

141. ## physics

a 2575 kg van runs into the back of a 825 kg compact car at rest. They move off together at 8.5 m/s. Assuming no friction with the ground, find the initial speed of the van.

142. ## Science

What conditions allowed so many different kind of mammals to evolve during the Cenozoic Era?

143. ## Science

How was their small size helpful to the mammals of the Mesozoic?

144. ## English 3

In the Adventures of Huckleberry Finn, Huck mentions that he wishes the Widow Douglas could know about his efforts to save the men on the wreck of the Walter Scott. Pretend that you are Huck and write a letter to the Widow, explaining the situation and

145. ## English

I forgot to include these last sentences. Could you check if the sentences are OK? Thank you. 1)Where has Peter gone? There he is. I've never flown in an plane before. 2)If don't run, you'll arrive late. She'll buy herself a mobile phone, as soon as she

146. ## Physics

A wire 3.00 m long and .450 mm2 in cross-sectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?

147. ## biology

how to identify leaves marple.lime,willow,hawthorn rose,rhododendron,birch ivy.oak.sycamore,horse chesnut,holly to make a branch key then turn it into paired statement key

Is predator-prey the most important ecological relationship? Thanks everyone!

149. ## Physics

the heating element of a coffee maker operates at 120 V and carries a current of 2 A. Assuming that the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat .500 kg of water from room temperature 23 degrees C to

150. ## Physics

what is the required resistance of an immersion heater that will increase the temperature of 1.50 kg of water from 10 degrees C to 50 degrees C in 10 minutes while operating 120 V?

151. ## Math

How do I show 52 with l and .

152. ## Measurments

how do I read a ruler?

153. ## Question

Are students allowed to answer questions if we know them?

154. ## Physics

In a certain stereo system, each speaker has a resistance of 4 Ω. The system is rated at 60 W in each channel. Each speaker circuit includes a fuse rated at a maximum current of 4 A. Is this system adequately protected against overload?

155. ## kassie

What is the major product of the reaction between methanol and (2R,3S)-2-bromo-3-methylpentane at room temperature?

156. ## calculus

h(x)= tan(x)-x/x^3 given values 1 and 0.5

157. ## REPORT CARD QUESTION

I got my report card today. I only have 8 subjects. I got 6 A's, 1 B, and a C+. I want to know if I made it on the FIRST CLASS honours. I also got all G's. did I make it on the first class honours? ps: G=good

158. ## Writing

which would be correct: nowhere no where no wear

159. ## problem solving

A freight train travel 53.7 miles per hour. About how many miles did the freight train travel in 2.1 hours?

160. ## Calculus-particle motion

1. A particle is moving on the x-axis (or any number line) Its position x(t), or distance from the origin, at the time t is given by x(t)=4t^3-16t^2+15t. t is greater than or equal to 0 a.) Where is the particle when it is at rest? b.) During what time

161. ## math (algebra)

1/3y=x y+x+4=0

162. ## math

what multiplication fact could you use to find a number that can be divided equally by 8 and 9?

163. ## math

Samantha can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?

164. ## math

Forrest Lumber uses the function S(t) = -75t + 375 to determine the salvage value S(t), in dollars, of a table saw t years after its purchase. How long will it take the saw to depreciate completely?

165. ## geometry

given: chord AB is parallel to chord CD prove if two chords of a circle are parallel, the two arcs between the chords are congruent. Prove: arc AC is congruent to arc BD

166. ## math

Equivalent Expressions 1. Which algebraic expression is equivalent to the expression below? 3(x - 2) + 12(x + 8)

167. ## math

Suppose that 28 crayons, of which four are red, are divided random among Jack, Marty, Sharon, and Martha (seven each). If Sharon has exactly one red crayon, what is the probability that Marty has the remaining 3?

168. ## Algebra

A Camp leader figures she needs one tent for every three campers plus one for herself...write an expression that reprents this.

169. ## us history

I need help on an essay. My essay is on immigration but my teacher wants us to compare and contrast immigration from 1800's to now. HELP!

170. ## Language Arts

What is the adverb in this sentence: We read a very good Japanese folk tale called "Green Willow."

171. ## Physics

A wire 3.00 m long and .450 mm2 in cross-sectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?

172. ## Physics

the heating element of a coffee maker operates at 120 V and carries a current of 2 A. Assuming that the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat .500 kg of water from room temperature 23 degrees C to

173. ## Physics

what is the required resistance of an immersion heater that will increase the temperature of 1.50 kg of water from 10 degrees C to 50 degrees C in 10 minutes while operating 120 V?

174. ## Molecular and Electron geometry

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :)

175. ## earth

Geological time scale summary for stone mountain's granite in georgia, with: description of the Feature Description of Processes Influence of Time on Rock Formation Discussion of Transformation processes Hand Samples Location Types of Rock from map A Map

176. ## Physical Science

Suppose you dissolve 40g of potassium nitrate in 100 cm3 of water at 100 C. If half the solution os poured out, how many grams of potassium nitrate will the remaining solution contain?

177. ## english

in tjaden this is a voracity, in Muller it is a foresight. what type of rhetorical device does this sentence contain?

178. ## Math

1/7 + 1/-7 = How do i solve?

179. ## Chemistry

Gold can be recovered from sea water by reacting the water with zinc, which is refined from zinc oxide. The zinc displaces the gold in the water. What mass of gold can be recovered if 2.00g of ZnO and an excess of sea water are available? 2ZnO + C -> 2Zn +

180. ## Geometry

If DE = x^2 + 4 and EB = 3x^2 - 5x - 8, find x and DB.

181. ## Criminology

What are the components for establishing corpus delicti? I cannot seem to answer this question on my homework, or find any information on the components. Any help would be greatly appreciated!

182. ## geomegy

cd and ce are radii of the same circle. how do they compare in length

183. ## math

A fireman stood in the middle of a step ladder. He climbed down 4 steps and continued his work. He went down 8 more then back up 9 to the top. How many steps were on the ladder?

184. ## Algebra 1

What property justifies that 3y+9 = 9+3y

185. ## Math7

Yuki made cookies on Monday. Some friends came over and ate half the cookies on Tuesday. On wednesday,Yuki ate three cookies, and on Thursday, she took two cookies to school. By Friday, Yuki had seven cookies left. How many did she bake on Monday? Please i

186. ## physics

What is the kinetic energy in J of a 66 g tennis ball approaching a tennis racket at 11.9 m/s?

187. ## physics

what is the velocity of a 53.7 kg jogger with a kinetic energy of 1054 J?

188. ## Physics

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 40.0s to speed up from rest to its top speed of 1 rotation every 1.40s . The astronaut is strapped into a seat 4.50m from the axis. What is the astronaut's

189. ## statisics

A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.

190. ## immigrant experience

Im doing this activity which is called township in upper canada, and we each got a person whom we have to shift in their new lot. So basically Im imagining that I am that person and that Ive got my lot. My location ticket says that my concession is 12 and

191. ## Earth and Physical Science

A 901 kg car is traveling north down a country road when a deer crosses in front of the car. By slamming on the breaks, the care is able to decelerate at 4.0 meters per second squared. What is the frictional force between the street and the car?

192. ## English

Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description.

193. ## Math

What is a mode? I need a quick review... I understand it, I just want to know better.

194. ## calculus

Let f(x) = [(2x2+4 x −70)/(x−5)] Show that f(x) has a removable discontinuity at x=5 and determine what value for f(5) would make f(x) continuous at x=5 Must define f(5)= I've been stuck on this problem for some time how would i do this one? Ty!

195. ## science

how are resources brought up from the earth's surface?

196. ## english

To no man does the earth mean so much as to the soldier. what type of rhetorical device does this sentece contain

197. ## chemistry

how to convert 4.8x10^5 hL to ml?

198. ## Criminology QUESTION

Susan,A detective with the New Hampshire Police dept has been sent to the NYC police department to work with detectives and while there in NY she sees a woman wanted for murder.Susan asks the woman to lunch,and mentions she is from New Hampshire but does

199. ## Algebra

A wire is run between two tips of two poles. One pole is 23 ft. taller than the other pole. The poles are 37 ft. apart. How long does the wire need to be to reach between the two poles?

200. ## Real number system

2,874 to base five

If a woman lifts a 19.3 kg bucket from a well and does 6.10 kJ of work, how deep is the well? Assume that the speed of the bucket remains constant as it is lifted

202. ## math

on a map with scale 2 cm:25km, what would be the dimensions of a 145 km by 80 km rectangle?

203. ## math

if a scale on a map is 1 in. = 250 miles, what would be the map distance if the actual distance between two cities is 1,000 miles?

204. ## Public and community health

Find national, state, and local governmental health agency websites that address the issue from the Article Review assignment. · Document your findings based on the University of Phoenix Material: Website Review. · Write a 700- to 1,050-word summary of

205. ## physics

The picture shows a uniform ramp between two buildings that allows for motion between the buildings due to strong winds. At its left end it is hinged to the building wall , at its right end it has a roller that can roll along the building wall. There is no

206. ## math

If it takes a person to walk 30 minutes in 3 miles..how many minutes would it take a person who walks 3.5 miles be?

207. ## english

there is some unknown poet called M.T. Buckley whom seems to be known only to the the English teachers and himself. Wrote a poem called "Birthday" and some others like "Poem of Poems" that didn't make it into the whose who of Poets. Does anyone know about

208. ## math

i solved by factoring like this: 3x^2+5x-12=0 (3x+4)(x-3) -4 +3 x=-4 x=3 now i need to solve by the form x^2=k How do I do that?

209. ## Physics

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

210. ## Physics

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

211. ## Physics

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

212. ## algebra

ax/b + cx/d =e solve for variable x

213. ## English

Need help with symbolism project. thank you for your help.? I need help with explaining symbolism of the axe from Black Cat. Do you know what symbolism mean is? THANK YOU FOR YOUR HELP am i right? Did the narrator kill his wife's brain with a axe? what is

214. ## Science

Why are there so many villi and air sacs?

215. ## statistics

Three percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund

What are 2 general structures for vascular plants and 2 for nonvascular plants? 2 transport structures for vascular plants? 2 methods of transport for nonvascular plants?

217. ## PHYSICS

add these two forces a. 200 newtons @ 20 degrees N of E B. 200 Newtons @ 30 S of E

218. ## PHYSICS

perseus the penguin can fly at a maxium speed of 150 km/hr when there is no wind. Perseus decides to make a trip from hershey to new york to see a broadway play. it is 250 km @ 30 degrees Nof E. if the wind is blowing at 50 km.hr due east, what direction

219. ## PHYSICS

PLAN A 4 HR FLIGHT (TELL ME SPEED AND DIRECTION SETTINGS FOR THE PLANE) TO FLY FROM CHICOGO TO ATLANTA(1500 KM @ 30 DEGREES E OF S) ON A DAY WHEN THE WIND IS BLOWING 100 KM/HR DUE EAST

220. ## taxes

how long does it usually take to get your income takes back if you filed electronically and direct deposited?

221. ## math

u/5=1.9 what is u

Complete hydrolysis of 25 mM ethyl acetate in an enzyme (i.e., esterase)-catalyzed reaction is carried out in a 40 mM NaCl solution buffered by 0.2 M Tris-Cl, pH 9.1. What is the pH at the end of the reaction? (For Tris base, which is the abbreviation for

223. ## physics

a 1500 kg car moving with a speed of 15 m/s collides with a utility pole and is brought to rest in 0.3 s. Find the average force exerted on the car during the collision.

224. ## Chemestry

Express condense order of increasing energy as a string without blank between orbit Barium Element

225. ## physics

a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle? I still don't understand. Could you please help with a formula? Thank you. physics - drwls, Monday, February 7, 2011 at 6:38pm Try using conservation

226. ## Physics

A 3.6-kilogram block sliding down a ramp from a height of 4.6 meters above the ground reaches the ground with a kinetic energy of 37 joules. The total work done by friction on the block as it slides down the ramp is approximately: [1 d.p.]

227. ## Obsolescence

Could I know what this means? Like I think it means no more existance or something, but how do I rephrase my awkwardy definition? What things are becoming obsolote? Home land line phones Cassettes Could You give me a link to where I can find what other

228. ## PHYSICS!

A 3.6-kilogram block sliding down a ramp from a height of 4.6 meters above the ground reaches the ground with a kinetic energy of 37 joules. The total work done by friction on the block as it slides down the ramp is approximately: [1 d.p.]

229. ## Chemistry

Write the reversible equation for the esterification and hydrolysis of glyceryl ethanoate

230. ## LA

what are the 3 most important figures of speech in the poem "Kite is a Victim" by Leonard Cohen? Please explain why tose three are important

235. ## Economics

ARBOC ARBEZ WHEAT COFFEE WHEAT COFFEE 120 0 120 0 0 30 0 20 8. The terms of trade are 2 units of wheat per unit of coffee, Arboc should produce which good? Arbez should produce which good? 9. The terms of trade are 5 units of wheat per unit of coffee,

236. ## Chemistry 119

Calculate the volume (in cc) of a 0.250 pound block of aluminum.

237. ## Math

Is (0,2) a orderd pair a solution of 4x - 3y = 6? Explain.

238. ## Spanish

verbs like venir and tener where only the yo-form is different, what are these verbs called and could someone list them. thanks

239. ## math

In bengal, india and Bangladashthere are about 2.6*10 to the power of 8. What is 2.6*10 to the power of 8 ?

240. ## Chemistry

Calculate the amount of Citric acid monohydrate needed to make 100 mL of 0.1 M solution

241. ## Anthropology, Psychology, Sociology

I'm stuck on summarizing the main ideas in a poem called, "Children Learn What They Live" by Dorothy Law Nolte in terms of the identification.

242. ## physics

Approximate the gravitational force of attraction between a 49.0 kg girl and a 52.0 kg boy if they are sitting 2.5 m apart

243. ## math

how do i simplify this; 8^-7/3

244. ## Reference Letter Updated

I have to imagine myself as an adult who knows me as a student.Then I have to create a made up letter of reference for myself based on what I hope someone would honestly be able to write about me in the future. SO basically Im that teacher.. Paragraph 1.

245. ## math

what is 3*10^6=

246. ## math

what is 6*10^9=

247. ## Math

y= 3/5x - 6 x= 4

248. ## organic chemistry

Looking at a diagram of cortisone, where are all the stereocenters? I know there are 6 of them, I just don't know where they are in the structure. Sorry I can't provide a diagram, but I'm sure they can be found online.

249. ## chemistry

what mass of K2SO4 would you measure out to prepare 550 mL of a 0.76 M solution?

250. ## Chemistry

consider the following reaction mechanism 2A+B->B+C B+D->E+C What is the rate law for step 2 of this reaction?

251. ## math

how do i solve the following problems? a^5+6a^4+5a^3=0 t^5-256t=0 y^3-512=0 z=8(root)z+240

252. ## CRIMINOLOGY

what is one physical factor that may cause one a life of criminal behavior

253. ## math

on a map with a scale of 2 cm = 25 km, what would be the dimension of a 145 km by 80 km rectangle?

254. ## math

could any one tell me the midpoint of these points and how to find them? (2,-1) and (5,-5) ii appreciiate iit.

255. ## math

I round to nearest ten these problems: 72 x 4 =290 15 x 6 =90 are these correct?

256. ## Braingstorming

I am writting a contrast poem and I need a topic that has two veiwpoints

257. ## Discrete Math

Consider the following relations on R, the set of real numbers a. R1: x, y ∈ R if and only if x = y. b. R2: x, y ∈ R if and only if x ≥ y. c. R3 : x, y ∈ R if and only if xy < 0. Determine whether or not each relation is flexible, symmetric,

258. ## statistics

Suppose that the heights of adult men in the United States are normally distributed with a mean of inches and a standard deviation of inches. What proportion of the adult men in United States are more than feet tall? (Hint: feet inches.) Round your answer

259. ## English

for "Children of the River" I have to come up with a thesis statement for chapter 1 I don't know what it is.....please help

260. ## Chemistry AP

What is the mass of oxygen in a ml flask if the pressure is 1.00 atm and a temperature of 22.0 Celsius?

261. ## Chemistry: Neutralization

What volume of a 0.1000M HCl solution is needed to neutralize 25.0 mL of .350 M NaOH? Any help would be appreciated.

262. ## physics

A moving electron passes near the nucleus of a gold atom, which contains 79 protons and 118 neutrons. At a particular moment the electron is a distance of 7.5 × 10−9 m from the gold nucleus. What is the magnitude of the force exerted by the gold nucleus

263. ## Math

Principal is $1,800. Rate is 10%. Simple Interest is$360. What's the time? Please show how you go to this answer.

264. ## physics

A moving electron passes near the nucleus of a gold atom, which contains 79 protons and 118 neutrons. At a particular moment the electron is a distance of 7.5 × 10−9 m from the gold nucleus. What is the magnitude of the force exerted by the gold nucleus

265. ## science

What nonmetal elment would be in a tube of "Brilliant Yellow" acrylic paint?

270. ## math

4|3-2x6|-3^2 can you tell me how to solve? please

271. ## physics

Vector V(with an arrow at the top) represents a displacement of 120. at 29.0 counterclockwise from the x axis. Write unit in Vector notation... Help!

272. ## chemisty

115 grams of KCl is dissolved in 750 ml of water. what are the molality, molarity, mole percent, % mass, ppm by mass. what would the freezing point and boiling point of that solution assuming Kf of water is 1.86 degree celsius/m and Kb is .0512 degree

273. ## calc

what is the instantaneous velocity function of 8x^2-4x+1... and x=3 seconds

274. ## physics

2.5 kg rifle fires a 20 g bullet at 400 m/s. Find magnitude of the recoil velocity of the rifle.

279. ## us history

The post-war years witnessed a "freedom explosion" across the globe, especially in Asia and Africa. Why did several of these new nations turn to the Soviet Union rather than the United States for support?

294. ## pharma

i m studying pharm.d(p.b).i m confuse about my project.give any idea

295. ## physics

A 30 kg person climbs up a 5 m rope at a constant speed. If the student’s power output is 2 kW, how long does it take for the student to climb the rope? How much work does the student do?

296. ## math

What is n + n =8 1/2?

Mrs. Reid brought 32 orange and apple slices to her daughter's soccer practice. There were three times as many orange slices as there were apple slices. How many of each kind did she bring?