Questions Asked on
September 13, 2006

Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average
asked by Josh 
Limit
Determine a region whose area is equal to the given limit. lim x> infinity Sigma (n on top, i=1 on bottom) (2/n)*[5+(2i/n)]^10 I started with delta x=ba/n =50/n =5/n The width of delta is 2/n so ba=2 I'm not sure how you got 50/n The integrand looks
asked by Rain 
ESLgrammar
can anyone plz tell me what's the differences between past perfect tense and past perfect continuous tense?and tell me few examples of each one? Thank you for using the Jiskha Homework Help Forum. The past perfect tense is to show that something "had
asked by Katrina 
Physics
I really would like to give some work on this problem, but I have no idea how to do it! Please help! An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 120 m above the level ground
asked by Josh 
to kill a mockingbird
who meets with atticus the weekend before tom robinson's trial begins? why? These are questions that you should be able to answer directly from the book. Please let us know what you think, and we'll give you feedback. =)
asked by john 
PHYSICS
A body of mass 100.0g is attached to a hanging spring whose force constant is 10.0 kN/m. The body is lifted until the spring is in its unstretched state. The body is then released. Using the law of conservation of energy, calculate the speed of the body
asked by Maggie 
chemistry
If a solution of 0.10 M silver nitrate, AgNO3, is slowly added to a solution containing 0.010 M potassium iodate, KIO3, and 0.20 M sodium bromate, NaBrO3, what precipitate will form first. Will this precipitate form nearly completely (99%) before the
asked by bria 
Math
What is the exact value of sin 5ð and how do you find it? type in the google search engine.. sin(5degrees) It will compute it for you. It appears you pasted something that the ASCII didn't translate. You'll need to type out the value for the angle.
asked by Rob 
math
what is the number feared by the pythagoreans I googled "number feared by the Pythagoreans" and checked the 3rd entry. This is what I found on that web site. Find the number feared by Pythagoreans, since it lies halfway between the only two integers that
asked by Anonymous 
Chemistry
The population of San Francisco is 750,000 in an area of 49 square miles. What is the population density in San Francisco? Express your answer in people per acre. ( 1mi(squared) = 640 acres ) 49 sq mi x (640 acres/1 sq mi) =?? acres. (Note that sq mi
asked by Jamie 
physics
a 5.0kg concrete block accelerates down a 34 degree slope at 4.2 m/s^2. Find the coefficient of friction between the block and the slope. The component of weight down the slope is mg*SinTheta. The component of weight perpendicular to the slope is mg
asked by mclanee 
direct variation
could someone please help me with these problems i am having trouble. If y=36 when x =6 find x when y = 42 If y=18 when x=6 find x when y=6 If y =12 when x= 15 find x when y =21 If y=6.6 when x=9.9 find y when x =6.6 If y=6 when x=(2/3)find x when y=12
asked by Teri 
Geometry
I need help with vertices! The vertices of triangle FGH are F(1,1), G(3,5),H(6,0). Find the coordinates of the vertices after a refelection over the yaxis. I'm not sure how to do this. Is there a certain formula I need to know? The reflection across the
asked by Madi 
Physics
Light travels in a straight line at a constant speed of 300,000 meter per second. What is the acceleration of light? If it has a constant speed then it's not accelerating, is it? BTW I think it's 3x10^8m/sec or 300,000,000 m/sec. It would be 300,000km/sec.
asked by Jennifer 
physics
A 2.0kg block is sitting on a 15 degree incline. The coefficient of friction is 0.22. What is the minimum force needed to cause the block to accelerate UP the slope? The force applied has to be slightly greater than the force of friction (mu(mgCosTheta))
asked by mclanee 
Social Studies
Which province in Canada is known as the "bread basket of the nation"? Alberta or manitoba
asked by Darcy 
Science
Water and gasoline are both clear liquids at room temperature. Describe one physical property and one chemical property that might be used to distinguish between them. Plz help physical:smell chemical: pH value What about density? The density of water is
asked by Pam 
chemistry
"Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area. Using these relationships and table I1 [I'll type it out], derive (do math stuff) the dimensions of newtons, joules, and pascals
asked by Jenn 
Accounting
Patty Piper recently began a swimming pool chlorination service. She visits each of her clients on a weekly basis and applies chlorine gas and other chemicals to their pools. This service in not only convenient for her clientele but is actually less costly
asked by Amber 
math
what does 409 divided by 3x7+5=? Do you mean (40  9)/(3*7 + 5) ? If so then evaluate the numerator to get 409=31. Then evaluate the denominator to get 3*7+5=26. Then form the fraction using the two results. Was that the question?
asked by hey sry cant tell u my name! 
math
Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times the second by 54. Can anyone help??? We're asked: Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times
asked by Rob 
physics
A child pushes a toy box 4.0m along the fllor with a force of 6.00N directed downward at an angle of 37.0 degrees to the horizontal. a. How much work does the child do? b. Would you expect more or less work to be done if the child pulled upward at the same
asked by fluffy 
math
how do you turn fractions into decimals? what do you do with the remainders? example: 3/16what would it be as a decimal? To turn a fraction into a decimal, divide the top number by the bottom number. Instead of a fractional remainder, you need to put a
asked by brianna 
social studies
What does A.D. and B.C. stand for and what do they mean?? A.D. stands for the Latin words, Anno Domini, which means "In the year of Our Lord." A.D. years, starting with 1 A.D. count from the supposed date of Christ's birth. B.C. stands for Before Christ
asked by Brianna 
Look for poem
I'm looking for a poem, "Ending Poem", which is written by a Puerto Rican poet. i can't find this poem,anyone can help me plzzzzzzzzzzzz? This stupid site won't let me post the link so hers the poem enjoy! I am what I am. A child of the Americas. A
asked by Katrina 
social studies
how did the new laws affect the lives of americans in the year following the civil war? the new laws affected the lives of the americans in many ways. for instance, ( um, what are the new laws? if i know i'll be able to answer the question. i'll be on
asked by Jasmine 
english
True or False: To talk in an abstract manner is to use easily understandable, concrete terms. Use http://www.answers.com to look up the words "abstract" and "concrete." Then let me know what you think. =) I think it is false? False is correct. =)
asked by anonymous 
math
how can you get the answer 16 using these numbers 4,3,2,1=16 you can not use any number more than one time. Help! 31=2 2x2=4 4x4=16 Bold face type show numbers in the problem. please help You need to post a question before we can help. Just click on the
asked by lorraine 
english
True or False: To talk in an abstract manner is to use easily understandable, concrete terms. I think it is false? I think so, too. I think Writeteacher answered this below, but yes, I think it's false too. The words abstract and concrete are generally
asked by anonymous 
Physics
Bob runs a marathon (26 miles) in 4 hrs. Note 1609 is 1 mile. I found the average speed miles/hour which is equal to 6.5 mi/hr. I need to find meters/second? So 1609m/mi * 6.5mi/hr * 1hr/3600sec = ??m/s correct?
asked by Jennifer 
Physics
A force of 3.00N acts through a distance of 12m in the direction of the force.Find the work done. work= force *distance If force is in newtons, distance in meters, the work unit is in joules.
asked by fluffy 
health
what are the pros and cons of eating healthy? http://www.google.com/search?q=healthful+eating&start=0&ie=utf8&oe=utf8&client=firefoxa&rls=org.mozilla:enUS:official Lots of good websites here with oodles of good information. =) pros are living a healthy
asked by school girl11 
science
What instrument measures very high temperaturesnot looking for thermometer. Depending upon how hot the temperature is that you are trying to measure, you might use a thermistor, thermocouple, or optical pyrometer, to name just three. I have used an
asked by Connor 
chemistry
"Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area. Using these relationships and table I1 [I'll type it out], derive (do math stuff) the dimensions of newtons, joules, and pascals
asked by Jenn 
math
how do you isolate a variable? my teacher gave us questions and we are suppose to isolate the variable x PLEASE HELP! x + 3y = 11 You isolate it by moving everyting to the other side except that variable. Thus x + 3y = 11 is the same as x = 3y + 11 If tne
asked by sophmore 
Math
Can someone explain to me.... when you are graphing number sets.... when do you use open/ closed cirles.... When do you use arrows?... What are intergers??? Thanks, ummm kbye
asked by Capi 
definition for science
the definition for longitude(meridians) The easiest thing to do is to look it up in the dictionary. Go to www.dictionary.com or to www.google.com The definition of coriolis Effect
asked by alejandra 
to kill a mockingbird
which details help the reaer understand that the jail house is a symbol of maycomb's resistance to progress? These are questions that you should be able to answer directly from the book. Please let us know what you think, and we'll give you feedback. =)
asked by john 
science (8th grade)
Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content. Please do not
asked by tonya 
physics
a rock weighing 20.0N falls from a height of 16.0m and sinks 0.600 m into the ground. from energy considerations, find the average force between the rock and the ground as the rock sinks. (avg. force) x (distance sunk) is the3 work done by the soil in
asked by Maggie 
Assistance please
What are two of many unconventional tasks that law enforcement officers have taken after 9/11? I have to dicuss how it relates to homeland security and their duties. Assistance please. Since this is not my area of expertise, I searched Google under the key
asked by Anonymous 
CHECK THIS OUT
"Drug use is information that is rightfully private and only in exceptional cases can an employer claim a right to know about such use." What are your thoughts? Please be aware that we are not here to do your homework or give you answers. Once you repost
asked by Brianna 
HEALTH AGAIN!! THANKS TO EVERYONE WHO ANSWERED ME!
DOES ANYONE KNOW ANY DISEASES ASSOCIATED WITH OBESITY?? MY HEALTH TEACHER IS WAY HARSH!! HE ASSINGED A ESSAY THE THIRD DAY BACK!! HOW CRUEL RIGHT? I WILL GIVE A THANKS IN ADVANCE TO ANYONE WHO ANSWERS MY QUESTION!! ] THANKS!!!!!;) :? Heart disease,
asked by school girl11 :? 
Physics
I need help on the following questions, I am stuck and not sure on what to do, can someone work it out and or tell me steps to obtain the answer. Thank you 1) A point charge of 0.90 microC is fixed to one corner of a square. An identical charge is fixed
asked by Kevin 
math
please can u tell me the term to term rule to this question 0,1,3,6,10,15,21 {nth} thank u Those are the triangular numbers, except your sequence started with 0 and we usually start with 1. 0= 1*(11)/2 term 1 1= 2*(21)/2 term 2 3= 3*(31)/2 term 3 6=
asked by emma hamer 
math
everybody help!!!!!!!!!!!!i cant post it but its a graph and it do tomarow tell me wut a variable and wat i will dooooooooooooooooooo neeeeeeeee Well we'll need to know what the question is before we'll be able to help. So what is your question? well the
asked by chemiii 
nature
hey guys i have hermot crabs that r realy realy realy sick!!!!!!!!! please help them!!!!there not moving there half way out of there shell !!!im scared!!!!!!any help? Thank you for using the Jiskha Homework Help Forum. First of all, where did you get your
asked by chemiii 
PHYSICS
WHAT MEASUREMENT IS 60KG? Mass is measured in kilograms, kg. In metric, be careful of capitalization I would use flash cards to memorize units.
asked by 74 TAYLOR MADE 
cultural diversity
My assignment is to create a table of leaders and legislation of the civil rights and black power movements. Can you help me find a good site that will help me do this. Thanks http://www.infoplease.com/spot/civilrightstimeline1.html
asked by jessica 
math
how do you measurement measure what?
asked by kelly 
Science
Why must chromosomes be duplicated before mitosis? DNA is the instruction of making proteins.To have a new cell that can work, it must has a replication of DNA.
asked by Shay 
making dot arays
what do we call #`s that can`t be arranged into 2 row arays? odd numbers. I learned that from Roger.
asked by Kathy 
science
i need ti find a type of scentists that start with the letters j,w,and y help me? Is that three scientists: one starting with j, one with w, and one with y OR one scientist with Jwr????? wich is the largest see wich is the largest sea
asked by mallory 
science(8th Grade)
List three things aboout Minerals of the Earth Crust Author Holt Rinehart & Winston
asked by tonya 
arrays
What do we call the numbers that cannot be arranged into 2row arrays? odd numbers. I learned that from Roger. And the answer is the same as one several posts below. Giberra
asked by stephanie 
biology
what is a hypothesis? http://en.wikipedia.org/wiki/Hypothesis
asked by jared 
science (8th grade)
Which of the following is not a characteristic of a crystal? a. The arrangement of the atoms in a crystal determines its shapes. b. A crystalline structure is always geometric. c. Crystals are classified according to their mineral content.
asked by tonya 
math homework
helo me unscrammble hpllrdasceeo I checked three sources and found no matches for your word. Are those the correct letters? Is something missing? hello word analogies synonyms sophisticated intellrygent stupendous
asked by karie 
anyone plz check if its right
(4q+2)(2q3) if i simplify it will it be 2q+5? correct You can drop the parentheses and rearrange the terms to get (4q+2)(2q3)=4q2q + 2(3)=2q+5 definately correct! i don't think that it is that hard if you drop the brackets you can't doubt it!
asked by alejandra