Questions Asked on
March 14, 2007

science
which is the largest digestive organ in the earthworm  how does its size make it well suited for its function? Compare the sizes of the earthworms digestive organs? There is a good picture of Earhtworm anatomy at the link below. You will see intestine and
asked by lisa 
physics (thxs again)
Thank you for the help :) A certain sample carries a current of 4A when the potential difference is 2V and a current of 10A when the potential difference is 4V. This samples is: a) obeys ohm's law b) has a resistance of 0.5 ohms at 1V c) has a resistance
asked by susan 
physics
A 10 ohms resistor has a constant current. If 1200C of charge flow through it in 4 minutes what is the value of the current? A) 3.0 A B) 5.0 A C) 11 A D) 15 A E) 20 A ok I used the I=Q/t, 1200C/240s to get 5A which is an answer. You said I was right but
asked by susan 
physics (thxs for the help)
A 10 ohms resistor has a constant current. If 1200C of charge flow through it in 4 minutes what is the value of the current? A) 3.0 A B) 5.0 A C) 11 A D) 15 A E) 20 A ok I see to main equation using dealing with resistance I=V/R and I=Q/t. My question
asked by susan 
Physics
Suppose you are told that only two colors of light (X and Y) are sent through a glass prism and that X is bent more than Y. Which color travels more slowly in the prism? The one that is bent more travels slower. If white light is sent through a prism, the
asked by Bert 
chemistry
assuming the valencies of hydrogen nitrogen and carbon are 1,3,and 4. i need to draw a structural formulae for hydrogen cyanide and cyanogen that are consistant with these values H(triple bond)CN N(triple bond)CC(triple bond)N
asked by notty 
Physics
I need help solving the problem below. Please respond. At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 8.9 m above the water. One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down
asked by Jim 
Science
Identify cliamte and topographical factors that(a)intensify air pollution and (b) help reduced air polluction. What sources of water pollution can you identify? How are people and the environment affected by the physical and economic effects of the air and
asked by Sharon 
com215
I need an example of informative and positive message please!!!!! An informative message could be something like, "Your paper is due on my desk by three o'clock Friday, April 16." A positive message could be, "Congratulations! Your paper is fantastic!"
asked by Meek 
English
What are the rules for possessives and plurals when it comes to names? For example, the last name Busch. Almost all nouns (including names) in English have four forms: singular, plural, singular possessive, plural possessive. I'll list a few for you in
asked by Mary 
Physics
The warranty on a new tire says that an automobile can travel for a distance of 92,000km before the tire wears out. The radius of the tire is 0.33m. How many revolutions does the tire make before wearing out? hello CJ I think we are in the same class. I
asked by CJ 
baasic geometry
A rectangle has width the same as side of a square whose perimeter is 20m. the length of the rectangle is 9m. Find the perimeter of this rectangle. W=L+20m 2L+2W=9 2L+2(w+20m)=9 2L+2w+20=9 4l+20=9 4L=20+9 4L=29 L=29/4 answered below. This is the third post
asked by vero 
chemistry
the isotope caesium137 has a half life of 30 years how long will it take for the amount of this isotope in a sample of caesium to decay to 1/16th of its origional amount. thanks amountremaining=oriinalamount(1/2)^time/timehalflife. 1/16= (1/2)^t/30
asked by notty 
Physics/Math
Ok...I figured out part a but I am having trouble with b. part a was: Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3.0x10^6 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is
asked by Technoboi11 
math
Recognize that rectangles that have the same area can have different perimenters. Do rectangles with the same area necessarily have the same perimeter?Give an example to support your answer. How I would handle this is to first look at the formula.
asked by yoko 
Physics
Can someone provide me some input on the question below. Please respond. A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. The string rotates at
asked by Jim 
Physics
Another problem I need help with. An auto race is held on a circular track. A car completes one lap in a time of 20.1 s, with an average tangential speed of 43.1 m/s. Find the following. The following did not follow. I apologize for that. Here is the
asked by Jim 
Physics
an automobile tire has a radius of 0.350M, and its center forward with a liner speed of v=13.0m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) (b) Relative to the
asked by CJ 
algebra
i forgot to post these! f(x)=9x+4 and listed in interval notation also: f(x) x2+14x+40 in interval notation and: 1/x^2+81 (interval notation) and: x+11/x^2121 (interval notation) and: f(x+2) f(x)=6x^2x+7 You have listed a lot of functions but have said
asked by valerie 
Computers
how could I put the Word Count on my research paper? If you are using Microsoft Word, it's pretty easy. Once you have finished the text of your research paper, but before you add the title and works cited pages, have the document open, go to the menu
asked by Candace 
drivers ed
when crossing multilane highways, you should treat each side as a one way street. TRUE FALSE??? I would say true. If there is an island in the middle, cross one half of the highway at a time. And nearly all US highways have an island in the middle. I think
asked by [.andrea.] 
college algebra
i need some help with this pleez! f(x+6) f(x)=3x^25x+3 if u could explain in steps that would be great! :) If f(x) = 3x^25x+3, then f(x+6) = 3(x+6)^2 + 5(x+6) + 3 Multiply that out and combine terms.
asked by Val 
basic geometry
these is my homework, and I would like for some to tell me if I did rigth. 10. A rentangle has width the same as a side of a square whose perimeter is 20m. the length of the rectangel is 9 M. Find the perimeter of this rectangle. W=L+20m 2L+w=9
asked by vero 
basic geometry
could someone check my work. The width of a rectagular is one half the length. the perimeter of the rectangler is 72 inches Find the length of the picture 2L+2w=72 2L(1/2)+2w=72 2L(5)+2w=72 10L+2w=72 12=72 L=12/72 L=6 answered below
asked by vero 
math
What are the challenges you have experienced regarding the use of fractions? Explain your answers. none I found the proof of: pi = 3 + 1/[6 + 3^2/[6+5^2/[6+7^2/[6+9^2/[6+11^2/[6+13^2/[6+.......]]]]]]] challenging 5yd=how many feet There are three feet in
asked by carmen 
math
this is dealing with line plots: if you have a box that has the following in it: number of clay models made by art club members in may 8 6 6 6 2 5 8 8 5 5 4 6 6 3 7 models in may then you have a line graph as such: how would you solve this? it just says
asked by monica 
Physics
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one
asked by Mary 
Physics drwls please help
A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 x 10^2 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 x 10^2 rpm. Find the magnitude of the average
asked by Mary 
music
how many steps would you have to go to translate from french horn to trumpet, for example if a trumpet is playing a C what would that be in horn Thank you for using the Jiskha Homework Help Forum. The French Horn is in the key of B flat and F while a
asked by jamie 
Math Alg 1
I never understood the system of inequalities and using a graph, help? Plot the graph as if there were an equal sign instead of > or < ; then use logic to decide where (which side of the line) the possible solutions exist. Example: for x>2, Plot an x=2
asked by keeli 
basic geometry
The length of a rectangular picture is seven iches longer than the width. Find the length and the width if the perimeter of the picture is 62 inches. 2L+2w=62 2L+2w+7=62 4L+7 =62 4L=7+62 4L=69 4L=69/4 2L+2w=62 You are ok to here. length is 7" longer than
asked by vero 
Chemistry
Identify 2 examples of the atoms or groups in the compound tocainide that could be involved in its binding to receptor sites in the body via hydrogen bonding. Give reasons for your conclusions. I have gathered that OH and NH bonds are an option, is this
asked by Bean 
social studies
I really need some good facts on chinese immigration and mexican immigration double ASAP.I need it by 5:15 today or by 8: 45 tomorrow at the VERY latest. Thank you so much. Madison
asked by Madison 
A math question needs answering
math terminology needed! how do you find the whole set in fractions? How do you work out (20x2) x =10 x
asked by Writeacher 
poems
i need a poem about anything it has ode http://englishhistory.net/keats/poetry/odeonagrecianurn.html =)
asked by Anonymous 
language arts
abc order for geology geography geologist graphite autograph photograph biopsy biology biosphere transact enact actor react import transport portable export When you get them in ABC (alphabetical) order, please repost and we'll let you know how you did. A
asked by helen 
Statistics
Using the following information find a 95% confidence interval for the intercept in the regression of measured distance on recession velocity. VARIABLE COEFFICIENT STANDARD ERROR Constant 0.3391 0.1185 Velocity 0.001373 0.000227 TSTAT PVALUE 3.369 0.0028
asked by MMK 
Calculus/Derivatives
In addition, can you walk me through how to get the derivatives for these 2 statements, too? a) y = x^5/3  5x^2/3 b) y = (the cubed root of the quantity) [(x^2  1)^2] Hi there. I need to find the first derivative of this statement. y=x(x+2)^3 I tried the
asked by Amy 
essay research
For my language arts class, I have to write about whether or not we agree with the idea of spanking children. I agree with the idea, but I need help with research on the topic, as I cannot find some noteworthy websites. This essay is due the day after
asked by Emily 
trig
how do you solve Fcos29(degree)210.3080.58Fsin29=0 Solving for F? F(cos269.58sin29)=210.308 F= 210.308/(cos269.58sin29)
asked by natash 
Environmental Science
List at least two benefits and two drawbacks of each form of perst control for: Pesticides, Genetic engineering, Biological control, insect birth control through sterilization, Insect sex attractants (pheromones) Insect harmones, Food irradiation, and
asked by Sharon 
English
In the book Brave New World, was Bernard Marx a hero or a rebel ? Why ? http://www.sparknotes.com/lit/bravenew/canalysis.html Scroll down and read about him here. =) Thank you for using the Jiskha Homework Help Forum. In addition to the link you already
asked by Sarah 
algebra,math,help
can someone explain to me the following:thanks... one number is 2 times another. If the sum of their reciprocals is (1)/(4). Find the two numbers. We can begin by looking at the following. Let's use the letters "a" and "c.": "One number is 2 times
asked by jasort20 
Basic geometry
these is another one the width of a rectangular picture is one half the length. the perimeter of the rectangle is 72inches.Find the length of the picture. 2L+2w=72 2L(1/2)+2w=72 2L(5)+2w=72 10L+2w=72 12L+72 L=72 L=12/72 L=6 If width is 1/2 the length, then
asked by vero 
MATH
HOW DO YOU MULTIPLY FRACTIONS? what is quik and easy way to mutply fractions Multiply the numerators (top numbers) and multiply the denominators (bottom numbers). Place the multiplication of the top numbers on the top of a new fraction and the bottom
asked by LAURIE 
Statistics
Suppose that the fit to the simple linear regression of Y on X from 6 observations produces the following residuals: 3.3, 2.1, 4.0, 1.5, 5.1, 1.6. a) What is the estimate of sigma squared? b) What is the estimate of sigma? c) What are the degrees of
asked by MMK 
Algebra I
Multiplying Polynomials...... Do you have a question? Use the general rule (a + b)(c + d) = ac + ad + bc + bd Form all possible products of terms in the two polynomials, and add them
asked by Candace 
English I
May I have an example of a thesis statemtn, please? statement* http://www.indiana.edu/~wts/pamphlets/thesis_statement.shtml
asked by Candace 
modern world
I don't understand what the difference is in how does the view of history influenced by Darwinism differ from the view of history influenced by the Enlightenment idea of progress??? Darwin didn't intend his theories of evolution to apply to humans and
asked by cher 
trig
can someone tell me the answer to this problem? Fcos29(degrees)0.58(fsin29/362.6)=0 What does Fcos and fsin mean? Is f a variable? If F is an unknown and f is another unknown, F cos 29 = 0.58(f sin 29)/362.6 0.8746197 F = 0.00077548 f 1127.8 F = f If F =
asked by Anonymous 
Algebra
I am having trouble with 4less than or equal to 3x13 less than or equal to 26 4 < 3x13 < 26 Add 13 to all three parts of the inequality. 9 < 3x < 39 Divide all three parts by 3. 3 < x < 13 The < signs should all be "less than or equal, but I can't
asked by Kim 
Business law? torts
I am looking for newspaper article describing any torts? Or I will happy if u do that for me, if u do so what is the article What is the “ issue”? Does it meet all of the requirements in your opinion, based on the facts you have? How should the court
asked by matt 
math,help
can someone show me these steps with the division like 2  1 which would mean half. the following though. so i can see it. Simplify 3  + 1 x5  1  (4)/(x5) Get least common denominator. For top part, the LCD is x5. So the 1 becomes
asked by jasort20 
Ecology
How does the term "regulating mortality factor" leads to achieving a favorable outcome in biological control of pest in agriculture and horticulture. taking into account the holly leaf miner kvalues for mortality
asked by bonita 
Civics
which president got stuck in the bathtub? is he dead or alive? Thank you for using the Jiskha Homework Help Forum. This is a trivia question! http://www.classroomhelp.com/lessons/Presidents/taft.html He was born in 1857 and died at 72 years of age in 1930.
asked by Amber 
science
I need to know about the wind patterns, tides/high and low,or upwelling for the north sea,irish sea,and the bay of biscay Thank you for using the Jiskha Homework Help Forum. Here is what I find: 1.
asked by jamie 
Science  Biology heeelp
Hi My question is what is the difference between insects and arachnids although they are in the same group ? thanx Thank you for using the Jiskha Homework Help Forum. Here are some links for you: 1. http://www.thinkingfountain.org/s/segment/segment.html 2.
asked by Amy 
Macroeconomic
Price Quantity Demand Quantity Demanded (bt)
asked by Anonymous 
finite
In how many ways can the letters in Saskatchewan be rearranged and still maintain the order in which the vowels appear? My guess: 12!/2!3!(4!/3!) because the vowels aaea can only have four total arrangements.
asked by R 
chemisrty
can anybody explain why and how a copper based catalyst helps in methonal production and the impact it would have on mass production many thanks A catalyst lowers the activitation energy needed for a reaction and allows reactants to produce more products
asked by bex 
Real Analysis
If S1 and S2 are are compact sets. Why is S1 union S2 also compact?
asked by Jennifer 
math,correction,plz
can someone correct this forme solve 7/5 = 35/x My answer: x = 25 solve x/2 minus x/3 = 3 My answer: x = 18 Both are correct
asked by jasort20 
BIO?
how would increase in adrenaline change blood glucose levels? Look under Actions in the body at: http://en.wikipedia.org/wiki/Epinephrine
asked by Nelson 
math
what is a quickway to learn how to mutlplying fractions flash cards: make and use them. how do you do Adding and Subtracting Rational Expressions? I want ot know what the numbers or factors of the number 81 are becasues that uis mapt of the homework in my
asked by lakeisha 
business
I want to know what does the Comissions Competition Directorategeneral do encourage and controls competition in the industrial consideration within the cartel Since this is not my area of expertise, I searched Google under the key words "Commission
asked by xhema 
Language
What is a pronou called that points out something? demonstrative http://grammar.ccc.commnet.edu/grammar/pronouns1.htm Scroll down. =)
asked by Lauryn 
Language
Break and thing are examples of what kind of verbs (not "action") Verbs can be in any of the following categories: ~linking or action ~active or passive ~transitive or intransitive Break can be an action, active, and transitive verb. Thing is not a verb.
asked by Lauryn 
English 1
You might define National Civil Defense, whatever that is. Quickly go to your thesis statement. How should I start off an essay about National Civil Defense? oh yea...i forgot about my thesis statement!
asked by bobpursley 
math
5yd=how many feet There are three feet per yard. Do the multiplication three feet in a yard times 5
asked by angel 
Math
Are you trying to solve for x, n or p? solve for n Show me how to work this problem. 2n = 4xp  6 what is the problem? what grade r u in i am in 6 grade To get n all by itself, you need to divide by 2. But if you divide by 2 on the left, you have to divide
asked by drwls 
psychology/exam
Does anyone one know how to or where to find information to prepare for advanced placement (AP) exams in psychology or environmental science for high school seniors?? Exams are in May. Your teacher has old exams, and study guides available for the exams,
asked by jules 
English
Is toast singular, plural, or both? Bring the toast here! Singular. The toasts were enlighting. Plural http://encarta.msn.com/encnet/features/dictionary/DictionaryResults.aspx?refid=1861720608 Whether there is a singular and plural or both, depends upon
asked by Mary 
science
I need to find a thin layer of ice that has condensed? go north :) or... Put 1/3 cup of hot water in the freezer with a piece of plastic over it. The warm moist air will rise and condense on the plastic lid and freeze there.
asked by albia 
Math
can anyone help me at all. I have several of these for homework for tomorrow. Solve for n 2n =4xp  6 WHOA! Where did "p" come from? That is a part of the problem? Divide each term by 2 to get n = 2xp 3
asked by Cherry 
Humanities
Who was the president during the Cold War? Well...majority of it 195074? Here's a list of Presidents and the dates they were in office. http://www.presidentsusa.net/presvplist.html Thank You!
asked by Candace 
Unit circle finding terminal points
Give t (3/5 , 4/5) How do I find the terminal points for pit Thanks Given t (3/5 , 4/5) How do I find the terminal points for pit Thanks
asked by Jen 
modern world
Does anyone know what the difference of communism by Marx and Lenin and national socialism by Hitler is? Thank you for using the Jiskha Homework Help Forum. Here are some links to help you in your research: 1. http://www.romm.org/soc_com.html 2.
asked by cher 
Social Studies
On this website, under Social Studies Homework Help, there is something listed as "Black Tuesday". In class, we are also studying about the 1930s and World War II, but we were talking about "Black THURSDAY"...partially confused...
asked by Candace 
Goverment
Wgat factors have combined to make today political campaigns as person and individual as they have become? freedom of speech? different perspectives of an issue? Your question is vague. Exactly what is meant by "today's [
asked by jenny 
line plot
based on those numbers,so it should look like this: Models made in May 1 0 2 x 3 x 4 x 5 xxx 6 xxxx 7 x 8 xxx , this is actually my third grade childs homework. i have been out of scool a long time, and obviously im having a difficult time! thanks for the
asked by monica