# Questions Asked onFebruary 11, 2010

1. ## physics

how large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a horizontal distance of 80 m ? I'm trying to find the formula and then plug in the correct #'s into the formula.

asked by courtland
2. ## Intermediate Accounting

The 10% bonds payable of Klein Company had a net carrying amount of \$570,000 on December 31, 2006. The bonds, which had a face value of \$600,000, were issued at a discount to yield 12%. The amortization of the bond discount was recorded under the

asked by Jeniffer
3. ## College Physics

A 1200-kg car going 30 m/s applies its brakes and skids to rest. If the friction force between the sliding tires and the pavement is 6000 N, how far does the car skid before coming to rest? Can you help me get the formula to use . Thanks

asked by edwin
4. ## biology

compare and contrast the variety of amino acids with that of monosaccharides and fatty acids. Which group exhibits the greatest structural variability?

asked by paul
5. ## maths

solve the following simultaneous equation: 5x+2y=29 x-y=-4 2x-y=-1 3x-y=2 5x+y=16 x-2y=1 5x+2y=16 -3x+4y=-7 3x+2y=19 5x-2y=5 7x-1/3-2(7y+3)/5=10/3 5x+2/4+3y-2/5=16/5

asked by JERMAINE
6. ## Physics 2

A cyllindrical copper cable carries a current of 1200 A. There is a potential difference of 1.6×10−2 V between two points on the cable that are 0.24 m apart. What is the radius of the cable?

asked by Chris
7. ## physics

a 1200 kg car going 30 m/s applies its brakes and skids to rest. if the friction force between the sliding ires and the pavement is 6000 N, how far does the car skid before coming to rest. I know the ans is 90 m what work/energy formula should i use to get

asked by edwin
8. ## chem

The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ. How much heat, in kilojoules, is evolved when a 3.70 kg sample of of molten Cu freezes?

asked by Joseph
9. ## 4th grade

i am a two-digit number over 50. when you put me in groups of seven, two are left over. the sum of my digits is 11. what number am i

asked by alex
10. ## math

Write a number sentence. Use every digit in the circle only once. Insert math symbols ( + ,-,x,/) and end the number with 3. Us parentheses if necessary. The numbers are 10,7,6,4,5

asked by dummy
11. ## Physics (2)

Consider a charged ring of radius 43.4 cm and total charge 18 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum ..so

asked by Andrew
12. ## Chemistry

How much heat is required to convert 32.5 grams of ethanol at 28 C to the vapor phase at 78 C? Ethanol (C2H5OH) boils at 75 C. Its density is 0.789 g/mL. The enthalpy of vaporization is 38.56 kJ/mol. The specific heat of liquid ethanol is 2.3 J/g-K.

asked by Anonymous
13. ## math

Bananas cost \$0.98 per kilogram. About how many 170-g bananas can you buy for 1 dollar

asked by Anonymous
14. ## english

wat r prepostions

asked by michelle
15. ## 8th grade algebra

the length of a rectangular garden is 5 feet longer than its width. The garden is surrounded by a 2-foot-wide-sidewalk. The sidewalk has an area of 76 square feet. Find the dimensions of the garden

asked by val
16. ## Math

Find the inverse of this function: f(x) = x^2 + 2x - 1, x>0 So far I just switched the x and y's...so it looks like this now: x = y^2 + 2y - 1 I know you're solving for y, and I want to factor (or use quadratic formula)...but x is in the way. So I'm not

asked by Moe
17. ## Math

let A and B be sets. Prove that AXB=0 iff A=0 or B=0

asked by Anonymous
18. ## Chemistry

Here is a chemical reaction Fe + O2--> Fe2+O3 what was Antonie Lavoiser rusting?

asked by Anonymous
19. ## 4th math

what number from 1 to 25 has the most factors?

asked by Katelee
20. ## Organic Chemistry

What would be the acid base reaction of: c2h30- and phenol(benzenol) C6H5OH be? Ok so this would result in the production of water, and the double bonds in phenol would open up and react, but I don't know what the end product would be??

asked by Natasha
21. ## Science

Plants, cows and humans use the same amino acids to make up their proteins and yet the proteins are very different. Why?? Could a plant make a human protein if we could splice a human protein gene into the plant's genome? Why? ----Those questions are from

asked by Emily
22. ## chemistry

Calculate the molecular formula of nicotine (CxHyNz, xyz being unknown)if 4.38 mg of this compound burns to form 11.9 mg of carbon dioxide and 3.41mg of water, and 3.62 g of nicotine changes the freezing point of 73.4g of water by .563C. Show all work. I

asked by Anonymous
23. ## Physics

In one of the original Doppler experiments, one tuba was played on a moving platform car at a frequency of 75 Hz, and a second identical one was played on the same tone while at rest in the railway station. What beat frequency was heard if the train

asked by Anonymous
24. ## geometry

Why can't shapes have 2 sides?

asked by amy
25. ## Calculus

y=x√(1-x²) Domain? y=x(1-x²)^(1/2) y=x/[(1-x²)^(-2)]? x≠±1 Symmetry? f(3)=192 f(-3)=-300 -f(-3)=300 no symmetry?

asked by sh
26. ## physics

A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.690 g, q = 4.75 µC) is located on the x axis at x = 20.0 cm, moving with a speed of 50.0 m/s in the positive y direction. For what value of Q will the

asked by Sandhya
27. ## staytistics

A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

asked by Anonymous
28. ## physics

what are nonrenewable energy sources?

asked by Natalia
29. ## Physics

Recall that for a finite rod of length L and total charge Q, the electric field for a point located a perpendicular distance r from the middle of the rod has a magnitude given by: Consider the limit of large distances, where a finite charged rod is

asked by Julia
30. ## Accounting

The City of Jamestown has agreed to acquire a new city maintenance building under a capital lease agreement. At the inception of the lease, a payment of \$100,000 is to be made; nine anual lease payments, each in the amount of \$100,000, are to be made at

asked by Jill
31. ## College Physics

A child slides down a slide with a 24 incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between the slide and the child.

asked by Sandy
32. ## 11th grade

how do you graph y=-2?

asked by keke
33. ## physics

An axon is the relatively long tail-like part of a neuron, or nerve cell. The outer surface of the axon membrane is charged positively, and the inner surface is charged negatively. The membrane itself has a dielectric constant k ~ 5 and a thickness d ~

asked by edd
34. ## Physics 2

The heating element of a clothes dryer has a resistance of 11 and is connnected to a 240-V electrical outlet. What is the current in the heating element? If the clothes dryer is run for 5 minutes, how much energy has been delivered to its heating element?

asked by Chris
35. ## English

Thank you for your last correction. Can you explain to me why I can't use the past simple in sentence (1) as the action is finished? I really hope you can check all the other sentences too 1) He makes clear that he had to overcome his prejudice towards her

asked by Franco
36. ## Physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone and

asked by Max
37. ## american literature

literary elements such as alliteration, assonance, and consonance are used to create sound effects. list three literary elements that Poe used as sound devices in "Annabel Lee" and give an example of each from the poem

asked by Anonymous
38. ## college physics

A pendulum is 0.9 m long and the bob has a mass of 1.0 kg. At the bottom of its swing, the bob's speed is 1.6 m/s. What is the tension in the string at the bottom of the swing

asked by kayla
39. ## literature

compare and contrast the characters Natty Bumppo in The Prairie and John in Hospital sketches thanks for the help

asked by laura
40. ## geography

how come 10% of the land could be used to grow crops on ancient china

asked by chris
41. ## Biology

28. Natural selection causes a. changes in the environment b. plants and animals to produce more offpsring than can survive c. changes in the frequency of certain favorable characteristics in a population d. all of the above D? 30. When Darwin published

asked by mysterychicken
42. ## statistics

If ten households in this area are selected at random, what is the probability that exactly two of them will be in violation of this law?

asked by katie
43. ## Math

Find all points with integer coordinates that are a distance of square root of 29 from (-4,3) how do u do this?????!?!?!?!

asked by Justin
44. ## math

The dimensions of a box are 20" by 30" by 4". The volume of the box is 2400 inches cubed. If each dimension is doubled the new volume would be the original volume times the: a)scale factor b)scale factor squared c)scale factor cubed

asked by Gunesh
45. ## statitics

find the probility that when 4 managers are randomly selected from a group of 20, the 4 oldest are selected

asked by rose
46. ## IB pHYSICS REGENTS

A ball is thrown straight downward with a speed of 0.50 meter per second from a height of 4.0 meters. What is the speed of the ball 0.70 second after it is released?

asked by Anonymous
47. ## 4th grade

how do i show my answer for 2/3 of 90 = 60

asked by kyndal
48. ## Physics

use the terms "displacement" and velocity to descibe how uniformly accelearted motion differs from unifrom motion

asked by jake
49. ## Biology

Plz help me find these words for puzzle. the questions are related to bacteria. 1. Ability of pathogen to kill (8 letters) 2. Ability of an organism to cause disease (8 letters) 3. One of the conditions for bacterial growth (8 letters) 4. Cells with no

asked by Aditi
50. ## 4th grade

You need 1/2 cup of sugar to make a three-layer cake. How much sugar would you need for a one-layer cake

asked by Scott
51. ## 7th grade

What term was used to describe the trading of slaves and goods to and from three continents? Eight(8)letters

asked by Lane
52. ## Algebra 1B

I need help with these 2 problems please. It's been a while so I need some brushing up 1)Subtact & Simplify 4-v/v-6 -2v-5/-v 2)Add 2/55u +11/25u

asked by LeAnn
53. ## arithmetic

You have 798 cans in 19 rows. If the cans are placed so that each row as 3 fewer cans than the other how many cans are in the bottom row?

asked by Marcel
54. ## French

Alrighty, so i have to write a journal entry about a time in my life when i felt left out. one of the questions is Qu'est-ce que t'es arrive? I think I know what the question, but I have no idea how it relates to the topic. Could somebody please tell me

asked by Dawn
55. ## calculus

y=ax power 2+bx+c

asked by Anonymous
56. ## Arithmetic

t6 + t15 = -141 and the common difference is -7. What is the first term of the sequence?

asked by Nickey
57. ## english

I'm black,approx. 6" square,I have a hole in the middle ,and my sides go round and round

asked by joe
58. ## Physics

A basketball player attempting a free throw shoots the ball at an angle of 35 above the horizontal. The basket is 4.21 m from the foul line and 3.05 m above the floor. If the ball is released at a height of 1.83 m above the floor and it goes through the

asked by Drew
59. ## math

write the fraction 36/60 in lowest terms. I think it is 0.6?

asked by Pam
60. ## psychology

Little Nero is a lost neurotransmitter who just found himself atop a receptor of the receiving dendrite and nees to get his charge to the neighboring neuron,, need to give detailed instructions to Little Nero so he is able to reach a successful action

asked by Lisa
61. ## math

24 over 8 decreased to its lowest form is

asked by Anonymous
62. ## science

whether a material is magnetic or not depends on which of the following ??MANGET ,ELECTOMAGNETISM, ELECTRIC MOTOR, ELECTRIC GNERATOR, ELEC.INDUCTION, MAGNETIC FORCE,

asked by sandra
63. ## math

simplify 8{[4(q-4)+16]-[2(5q-3)+3]}

asked by josh
64. ## 4th grade math

a pencil can draw a line 36 miles long, according ti research. Mickey decided to test that theory and draw his 36 miles in the shape if a square, so he would wind up back where he started. How long would each side of square be?

asked by Katelee
65. ## math

simplify 8{[4(q-4)+16]-[2(5q-3)+3]}

asked by josh
66. ## Computers

This may seem irrelevant, but why is this site so oddly named?

asked by Patrick
67. ## chemistry

how do i calculate the volume of a unit cell and volume of atoms within a unit cell for FCC and BCC

asked by blasting
68. ## Psychology

Consier a couple that has been married for over ten years and is exeriencing a lack of romance and sexul intest in one another. What might be some of the causes of the decrease in sexual interest? Do you thnk the lack of sexual interest might stem from

asked by Anonymous
69. ## english

Please help me to correct grammar Task 3 – Unit review (Summary and critique) According to Brown and Hood’s “Academic Encounters: Life in Society” (2002), Intermediate to High Intermediate Level, includes unit 1: Belonging to a group, consists of

asked by kar
70. ## math

A rectangular laboratory tray is 1/2 feet by 4/3 feet. Find the area.

asked by samtha
71. ## English

Please help me to correct Grammar 2. To what extent is CA relate to culture? Is it possible to analyze a particular conversation with no regard of cultural schemata? Support your argument with what you have learnt in this course. Conversation analysis

asked by karn
72. ## mgt 330

What do you think are some barriers to learning in your organization?

asked by meshelle
73. ## physics

Two charged bodies exert a force of 0.245 N on each other. If they are moved so that they are one-fifth as far apart, what force is exerted?

asked by emma
74. ## chemistry

Which of the following is the formation reaction for CaO(s) ? can you check my answer(the one that has star next to it) A. Ca(s) + 1/2O2(g)= CaO(s). B. CaO(s)= Ca(s) + 1/2O2(g) C. Ca2+(aq) + O2–(aq)= CaO(s) D. 2 Ca(s) + O2(g)= 2CaO(s) (*) E. 2 CaO(s)= 2

asked by blasting
75. ## CAPP

In Canada, if you want to resign from your job, how many days in advance should you notify your employer?

asked by Anonymous
76. ## math

1 1/4 * 7 5/8

asked by samtha
77. ## biology

6. A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000

asked by yishka
78. ## physics

A proton is released 2*10^-11 from the center of an immovable 6.4*10^-18 C charged sphere. What is the speed of this proton when it is 0.50mm from the center of the sphere?

asked by Freda
79. ## physics

The centers of two helium nuclei are held 2.5*10^-12 m apart, and are then released. Calculate the speed of each necleus when they are 0.75 m apart.

asked by Lise
80. ## math

I have two questions. I am trying to use the formulas our teacher used but I am still confused. I will discuss it with him tonight but I just wanted to get a different perspective. #1 Amy paid \$102 for a pair New Balance 1122 running shoes during a 15%-off

asked by marco
81. ## Math

what is 6 divided by 2/3?

asked by Holly
82. ## chemistry

how do reciprocating heat engines work?

asked by alex
83. ## college

A train departs its home station traveling at 50 mph. It is 400 miles from your location. How long will it take to arrive at your location?

asked by Bianca
84. ## general physics

We can interpret a distance traveled of 7.43 to mean a distance between 7.425 and 7.435 , thus rounding to 7.43 . Similarly, a time interval of 0.83 implies a time interval between 0.825 and 0.835 . Use these values to justify the rule for determining

asked by shaxity
85. ## flagahan high

why can small cells exchange substances more readily than large cells?

asked by franklin
86. ## chemistry

describe how you would produce pure samples of iron and sulphur powders from a mixture of the two.

asked by Natalia
87. ## science

how do living things need each other? thank you for your help

asked by st
88. ## music

a short musical form written especially for the piano is called a a. prelude b. berceuse c. character d. waltz

asked by nikki
89. ## math

What is the ratio: 78 days to 24 days is it 78:24?

asked by pam
90. ## music

the music of brahms is often describe as a. negative b. dissonant c. disorganized d. optimistic

asked by nikki
91. ## music

music is generally associated with nonmusical ideas and objects a. character b. program c. recital d. literary

asked by nikki
92. ## music

the music of the romantic era is typically very a. intellectual b. emotional c. scientific d. unimaginative

asked by nikki
93. ## Social Studies

What is a KNL chart? and what could i put down from the greeks?

asked by Sabrina
94. ## math

whats the unit rate: 882 yd in 9 secs A grocery store sells four different jars of peanut butter. Determine which is the best buy, based on the cost per unit. 14 ounces for \$1.44 20 ounces for \$1.88 30 ounces for \$3.48 38 ounces for \$4.10

asked by pam
95. ## English

Hello! Any ideas on how to practice present perfect continuous in the classroom? Any games? I don't need web pages with fill in exercises I need some ideas about some games which could be played in the classroom but shouldn't last longer than 10 minutes!!

asked by swen
96. ## music

piano music of the romantic period frequently relies on the use of the a. staccato b. reed c. manuals d. pedals

asked by nikki
97. ## Chemistry

Which of the solutions has the greatest osmotic pressure? Choose one answer. a. 10.0 g glucose in 1.00 L at 298 K b. 10.0 g glucose in 1.00 L at 303 K c. 10.0 g glucose in 0.500 L at 298 K d. 5.0 g glucose in 1.00 L at 298 K

asked by CC
98. ## music

how many movements are there in a tone poem a. one b. two c. three d. four

asked by nikki
99. ## music

the chant was incorporated into several musical works of the romantic period a. kyrie b. agnus dei c. dies irae d. credo

asked by nikki
100. ## health administration

What is one strength you see in the current U.S. health care system? What is one weakness you see? List and describe one of the challenges facing the U.S. health care system.

asked by sasha
101. ## english

need to change all 1st and 2nd person pronouns to 3rd person pronouns for the following: We animals are the most complicated things you will find in the known universe. The universe that we know, of course, is a tiny fragment of the actual universe. There

asked by sammi
102. ## arithmetic

How do i find the common ratio, when the 1st, 2nd and 7th terms of a A.P with common difference 2 are the first three terms of a G.P .

asked by Ren
103. ## GEO

What are some of the resources that are abundant int he San Andreas region? What is the importance and economic value of those resources?? I can't find anything on this.

asked by GGIFT
104. ## Thinking Critically

How can the concept of a national identitiy both unite and divide people?

asked by Lora
105. ## Thinking Critically

How have wars traditionally influenced the general perception of being an American?

asked by Lora
106. ## science

A sample of sucrose as been contaminated with sand.How would you purify the sucrose

asked by Natalia
107. ## science

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

asked by Natalia
108. ## chemistry

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

asked by Natalia
109. ## chemistry

A sample of sucrose as been contaminated with sand.How would you purify the sucrose

asked by Natalia
110. ## chemistry

What are the physical properties of sucrose.

asked by Natalia
111. ## World History

What are the Expansion/ Influence of Judaism? plz help :D

asked by Anonymous
112. ## Com150

When I wrote my essay and sent it through the CWE it showed me alot of passive voice. Can someone give me an examlpe of this and the right way to re-write so I can fix my mistakes. My example.... All factors needs to be looked into before closing schools.

asked by Tracie
113. ## music

________ music is generally associated with nonmusical ideas and objects a. Character b. Program c. Recital d. Literary

asked by nikki
114. ## college

In what ways might a devil's advocate hinder the group process what other strategies can help reduce groupthink?

asked by CASSANDRA
115. ## 8th grade

Can you make a sentence that is not to hard to understand using the words growth factor, exponential form, and decay factor?

asked by Bobby
116. ## com 140/college

what stratagies can be used to incorporate effective visiual element into business presentation

asked by mechelle
117. ## English

Could you check the following statements, please? 1) Elizabeth believes her closest friend Charlotte has demeaned herself in (?) marrying Mr Collins. Though she is disappointed with her choice, she promises to visit her in Kent. 2) The Chapter starts with

asked by Franco
118. ## physics

what are renewable energurces?

asked by Natalia

y= mc + b

asked by Fay
120. ## texas history

how did the government under sam houston encourage people to settle in texas?

asked by Anonymous
121. ## chem

im working on a lab in chemistry called measuring energy changes :Calorimetry how to you determine the molar latent heat of fusion of ice using q=mcT ?? why was the ice driedbefore it was placed in water? why is hot warer ysed rather than room temp? in

asked by jess
122. ## physics

what are some examples of sources of energy?

asked by Natalia
123. ## 10th grade, spanish three

how would i answer this question with direct object pronoun? quien te habla por la telefono todos los dias?

asked by jess
124. ## chemistry

when is it better to use fractional distillation other than simple distillation?

asked by Natalia
125. ## health

whata re some postive sterotypes for the older adults. I can think of many neg. ones but not many postive ones. all I really have is "your not getting older your getting better"

asked by april
126. ## Math

A ladder is 6m long.How much farther up a wall dose it reach when the foot of the ladder is 2m fro the wall than when it is 3m from the wall?

asked by Cheyenne
127. ## music

which one of the following terms best describes the music of the classical period a. polyphony b. irregular metrical patterns c. orderly quality d. sudden loud and soft notes

asked by nikki
128. ## chemistry

an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details how you would produce a

asked by Natalia
129. ## music

music to be performed by a small group is commonly known as _____ music a. orchestral b. chamber c. concerto d. sequential

asked by nikki
130. ## music

the ____ is an essential characteristic of sonata form a. sudden crescendo b. absence of harmony c. fluctuation of rhythm d. development of themes

asked by nikki
131. ## english

I have to describe a waterpark in 3rd person? need HELP :) homework needs to be in 2morow.

asked by aammmyyy
132. ## music

a ______ is a gradual shift from one theme and the next a. codetta b. tonic c. transition d. libretto

asked by she she
133. ## math

Suppose that the multiplication and division keys on your calculator were broken. Explain how you can calculate 452 x14 by using other keys on the calculator.

asked by rachael
134. ## music

in a group that plays chamber music, how many instruments will play each part a. one b. two c. three d. four

asked by she she
135. ## science

what is the particle size of solutions and suspension?

asked by Annie!
136. ## music

what is one of the chief characteristics of beethoven's music a. gentle transition b. dramatic contrast c. regular rhythm d. slow tempo

asked by she she
137. ## math

Estimate using any method. Show how you estimated. Then calculate the exact answer. Show your calculation work: 824 ÷ 6

asked by racheal
138. ## English-Ms. Sue

Ms. Sue you know the description of the old house I did, well now I have to put all that into a paragraph. I want to make this paragraph seem really intersting and spooky. Ms. Sue could you please give me a spooky intro and conclusion for this, please. If

asked by Sara
139. ## Art

I have to do time traveling art historian for my final I have choosen Egyptian, Roman, Indian I was wondering if anyone can give me a piece of art from each one to research because my book got lost. And also do someone know how I am suppose to set the

asked by Amy
140. ## Math

Please help, Give two numbers between which the exact answer falls: 3,567 – 1, 095 Explain your reasoning.

asked by michael
141. ## Math

Can someone help me please, I am having a hard time understanding these three problems Clustering: 133 + 98 + 121 + 92 + 96 Substitute compatible numbers: 134 x 19 Front-end estimation with adjustment: 2,152 + 8,376

asked by Jackie
142. ## college

solve the system by the substitution method x=8-4y 3x=5y=3

asked by Monica
143. ## 6th grade

The thermoshpere is 415 km deep. Calculate the percent of the atmosphere made up by the thermosphere if the total atmospehere extends 500 km.

asked by LeeAnne
144. ## Pre ap biology

Project on Eubacteria- What is the organs modus operand1

asked by Jayrard Denysschen
145. ## science

The thermoshpere is 415 km deep. Calculate the percent of the atmosphere made up by the thermosphere if the total atmospehere extends 500 km. I need to show my work ~ help! thank you so much!

asked by LeeAnne
146. ## english

how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than daily or weekly).

asked by junior
147. ## Physics

Describe the acceleration time graph of a car traveling forward and applying its brakes.

asked by jake
148. ## Biology

28. Natural selection causes a. changes in the environment b. plants and animals to produce more offpsring than can survive c. changes in the frequency of certain favorable characteristics in a population d. all of the above D? 30. When Darwin published

asked by mysterychicken
149. ## math

a tunnel under a river is 196.8 ft below the surface at its west point. if the angle of depression of the runnel is 4.962 then how far apart on the surface are entrances to the tunnel? how long is tunnel

asked by rei456
150. ## Math

What is the exact value of csc^2 210degrees - cot^2 210degrees? Can you make a generalization about the value of csc^2 theta - cot^2 theta? I'm not sure what to do, I'm familiar with the terms but not sure how to go about solving the question.

asked by Phillip
151. ## Physics

Consider a charged ring of radius 43.4 cm and total charge 18 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum?

asked by Andrew
152. ## Math

Transform to a Cartesian Equation: a. x = sin t y = cos t b. x = t^(1/3) -1 y = t^2 - t --- This is what I have for B so far: y = t(t-1) t = (x+1)^3 y = (x+1)^3[(x+1)^3-1] = (x^3 + 3x^2 + 3x + 1)[x^3+3x^2+3x] ...??? and IDK about A. Help? Thank you so

asked by Anonymous
153. ## Math

I am suppose to write 2/30 as a percent. My answer choices are a .o6%, b. .005% c. .6% d. .05% I thought I would divide 2 into 30 which would be .06 and then moving 2 spaces to the right equaling 6%. How do I solve this problem.

asked by Kevin
154. ## math

9497463345x932234524?

asked by haley
155. ## agricultural science

breeds of broilers in Guyana and breeds of layers in Guyana.

asked by Natalia
156. ## Physics

A particle's constant acceleration is south at 2.1 m/s2. At t = 0, its velocity is 45.2 m/s east. What is its velocity at t = 7.7 s? What's the magnitude and direction?

asked by Max
157. ## To. Ms. Sue

Ms. Sue I am unable to post my paragraph on here. it says that your question could not be posted. I didn't even post a website on here. What do I do?

asked by Sara
158. ## Math

How do I make 2/30 into a percent? I don't need answer only need to know how to solve.

asked by Kevin
159. ## 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 students.

asked by JDec
160. ## Physics

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 7 mC moves from a distance of 9 cm to a distance of 17 cm. How much work is done by the electric field?

asked by Joanna
161. ## physics

what are some questions on momentum?

asked by Natalia
162. ## physics

what are some questions on work?

asked by Natalia
163. ## Physics

Differentiate the given function? y= 6/t + 3/t^2 -5/sqrt(t) dy/dt=?

asked by Kassie
164. ## electrical technology

explain the importance of the telephone hammer in electrical installation

asked by shaquille
165. ## English

Could you check the following statements, please? My doubts concern the words before the parentheses.I really hope you can help me!! 1) Elizabeth believes her closest friend Charlotte has demeaned herself in (?) marrying Mr Collins. Though she is

asked by Franco
166. ## chemistry

what are the physical properties of sucrose?

asked by Natalia
167. ## Intro to Physics

A boulder has 300 J of potential energy sitting on the edge of a cliff. What is the boulder's kinetic energy as it hits the ground?

asked by Christina
168. ## Calculus

Differentiate the given function. f(t)= 4(sqrt(t^3)) + 14/sqrt(t) - sqrt(17) f'(t)=?

asked by Kassie
169. ## Physics

Another question :) At the top of its drop hill, a 1,000 kg roller coaster has 200,000 J of total energy. If the top of the next hill is 13 meters, what is the kinetic energy of the roller coaster on this hill? Thanks

asked by Christina
170. ## cjs200

How would this affect the structure of the criminal justice system as we see it today?

asked by Anonymous
171. ## English-Ms. Sue

I was unable to stop. I kept going and going, something was out there which was bringing me closer to itself.

asked by Sara
172. ## criminal justice

1.Which option (front-end solutions, double bunking, or back-end solutions) do you feel is the most effective in our correctional system?

asked by Sasha
173. ## chenistry

Calculate the molarity of the following. 45 grams of Na2SO4 dissolved to make 500 ml of solution 30 grams of C4H8O4 dissolved to make 450 ml of solution

asked by keisha
174. ## math

c=3.14(8)=

asked by Anonymous
175. ## Grammar

How could make this not be a passive voice sentence? Schools close because of poor test scores,lack of government funding provide, and the area of the school is determined of how much money is provided. There is 2 passive voice how should I change it to

asked by Ashley
176. ## PHYS 1112

A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. A defibrillator passes 18 A of current through the torso of a person in 2.0 ms. a) How much charge moves during this time? b) How many electrons pass through

asked by Diane
177. ## History

Compare the interaction between the Japanese, New World and Europeans. How did the Europeans treat the people of Japan and the New World? Who was treated better? Why?

asked by Sandy
178. ## Business Law

What are some good web sites to visit to learn about government agencies?

asked by Bradley
179. ## college

Why is HC3HO considered a weak acid? Why is NaOH considered a strong base? Why is Mg(NO3)2 considered a salt?

asked by keisha
180. ## Algebra

Hi, would it be possible for a bit of guidance on the following question? I need to find the value of x, here is what I have done so far, x/3 +15 = 3 (x-11) Mulitpiled each side by 3 (the denominator) 3(x/3 + 15) = 9 (x-11) Multilpied out the brackets x +

asked by Sam
181. ## Chemistry

How many grams of water can be cooled from 31 C to 20 C by the evaporation of 37 grams of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g*K.

asked by Anonymous
182. ## Mathematics Proof Logic

prove |x + y| is greater than or equal to |x| - |y|

asked by Shawna
183. ## eth

What are organizations like Bureau of Indians National Congress of American Indians or National Indian Gaming Association doing to mitigate tribal poverty and encourage prosperity

asked by tama
184. ## History-PLEASE HELP

I am stuck on a homework assignment and am having a hard time finding information on this topic. Can someone please please help!! Why is Kenneth Clark’s interpretation of the African mask ethnocentric?

asked by Joe
185. ## gr.12 chemistry

write two geometric isomers for 2-heptene

asked by shaya
186. ## eth125

What are organizations like Bureau of Indians National Congress of American Indians or National Indian Gaming Association doing to mitigate tribal poverty and encourage prosperity

asked by tama
187. ## 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 students.

asked by JDec
188. ## Physics

At an antique car rally, a Stanley Steamer automobile travels north at 38 km/h and a Pierce Arrow automobile travels east at 51 km/h. Relative to an observer riding in the Stanley Steamer, what are the x- and y-components of the velocity of the Pierce

asked by Max
189. ## literature

name three rhetorical devices Sojourner Truth used in Ain't I a Woman? and give an example of each device from the speech

asked by Anonymous
190. ## Physics

The range R of a projectile is defined as the magnitude of the horizontal displacement of the projectile when it returns to its original altitude. (In other words, the range is the distance between the launch point and the impact point on flat ground.) A

asked by Max
191. ## Economics

As a manager of a financial planning business you have two financial planners, Phil and Francis. In an hour, Phil can produce either one financial statement or answer 8 phone calls, while Francis can either produce 4 financial statements or answer 10 phone

asked by Quinn
192. ## math

write as an equation- seven more than twenty less one half of six is thirty four

asked by olivia
193. ## Definition

what is a franchise

asked by har
194. ## PHYSICS

A charged disk of radius R that carries a surface charge density ó produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A

asked by Heidi
195. ## Grammar

How could make this not be a passive voice sentence? Schools close because of poor test scores,lack of government funding provide, and the area of the school is determined of how much money is provided. There is 2 passive voice how should I change it to

asked by Ashley
196. ## ethics in health care

What are ways to handle gender differences that impact health

asked by Anonymous
197. ## science

What do the words in the left column have in common that is not shared by any words in the right column? Ramp Hammer Faucet screw axle chisel hinge doorstop

asked by Jay
198. ## Math

Okay , we are working on Area of Complex Figures, and i need help solving this problem , i have 2 triangles with 10in sides and one of them has a 5in width then there's a rectangle that's height is 15in and width is 30in

asked by Sam
199. ## Calculus

Evaluate the definite integral. xe^(–x^2)dx from 0 to 6

asked by <3
200. ## math repost

1. What is the exact value of csc^2 210degrees - cot^2 210degrees? 2. Can you make a generalization about the value of csc^2 theta - cot^2 theta? I'm not sure what to do, I'm familiar with the terms but not sure how to go about solving the question.

asked by Phillip
201. ## accounting

What is the purpose of the chart of accounts? o Why are internal controls and audit trails important in a computerized accounting system? · This assignment can be completed using Microsoft Word or the online posting tool.

asked by Anonymous
202. ## Grammar and Composition

I don't know if anybody remembers, but a long time ago I was working on a pet peeve speech for this course and a lot of the tutors helped me finish it up. There was a second part to it that I never got to do, I would like to finish that up now. There were

asked by y912f
203. ## Biology

Please help me !!! Compare and contrast the physiological functions of chloroplasts and mitochondria. Thanks

asked by Amanda
204. ## Biology

Why was it so important to keep all cellular fractions at or near 0 degree C throughout the entire isolation/purification procedure?

asked by Judy
205. ## Biology

why did the nuclei enriched fraction appear in the centrifuge fraction spun at the slower speed? Why didn't this fraction contain only nuclei(Why wasn't it pure?)?

asked by Kate
206. ## Biology

What is the major function/role that the nucleus plays in the life of a living cell?

asked by Jennifer
207. ## ELA

How does SeaShells relate to ELA

asked by Brittany Wilson
208. ## math

what happens to a man who carries an ax in his teeth

asked by Diondre
209. ## Social Studies

What term was used to describe the trade of slaves and goods to and from three continents

asked by Lane
210. ## Math

A girl gets a lion for \$1,000,000. It's on sale for 73% off. How much does she have to pay?

asked by Annynomus
211. ## English-Ms. Sue

The atmosphere around me was really daunting.

asked by Sara
212. ## mth 157

Drawing one slip, what is P (slip contains a vowel)?

asked by tom
213. ## Social Studies

What term was used to describe the trade of slaves and goods to and from three continents

asked by Lane