Questions Asked on
November 7, 2007

physical science
a 1.0 kg sample of metal with a specific heat of 0.50KJ/kgCis heated to 100.0C and then placed in a 50.0g sample of water at 20.0C. What is the final temperature of the metal and the water? I can't figure this out. Is the answer room temperature???
asked by nate 
Physics
A small block on a frictionless horizontal surface has a mass of 2.50×10−2 Kg. It is attached to a massless cord passing through a hole in the surface. The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of
asked by Christina 
Physics
A lever is 5m long. The distance from fulcrum to the weight to be lifted is 1m. If the worker pushes on the opposite end with 400N, what is the max weight that can be lifted? l=5m h=1m F=400N F_g=? torque=F_g*l I first must find torque so that I can plug
asked by Andrea 
math
happened when two fruit companies merged?
asked by dorina 
AP chem
This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
asked by Corey 
Woods.
List 5 or more types of driving tools.
asked by Navin. 
Physics
"the total angular momentum of an object changes when a net external force acts on the system." This statement is: a)always true b) never true c) sometime true, it depends on the force's direction d)sometime true, it depends on the force's point of
asked by Andrea 
Chemistry
Can carbon monoxide leak (from a fireplace, barbeque, water heater)?
asked by Panda 
Physics
A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum as it reaches the ground. b) What impulse is needed to bring the brick to rest? c) The brick falls onto a carpet 2.0 cm thick. Assuming the force stopping it is constant, find the average
asked by Jayd 
Physics
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center. When the skater's hands and arms are brought in and wrapped around his body to execute the spin, the hands
asked by Christina 
Federal Tax II
Perry organized Cardinal Corporation 10 years ago by contributing property worth $2 million, basis of $450,000 for 2,500 shares of stock in Cardinal, representing 100% of the stock in the corporation. Perry later gave each of his children, Brittany and
asked by Angela 
Chemistry
The bond energy of the O2 molecule is 495. a) calculate the minimum frequency and max wavelength of light required to break this bond. b) how many photons of this wavelength would it take in order to break open the bonds of all the oxygen molecules in a
asked by Karen 
math
How do I derive the secant reduction rule? Integral (sec x)^n dx = Integral (sec x)^(n2) * (sec x)^2 dx = Integral ((tan x)^2 + 1)^(n/21) * (sec x)^2 dx Doing a substitution with: u = tax x du = (sec x)^2 dx = Integral (u^2 + 1)^(n/21) * du At this
asked by mathstudent 
Math(Algebra 1)
Im doing math homework and having some trouble. Its called "Graphing equations", and this one is hard. It says 2xy=7 and then I have to match it with a graph in the textbook. What do I do first to be able to match it? Please help a.s.a.p.
asked by Taylor 
Science.
What are some types of tools that a carpenter would use? List 5 or more please.
asked by Navin. 
chemistry
Hey, I am having a real hard time getting the answers to the problems. Any help would be greatly aprreciated! 1. When 11 mL of a solution containing 2.9 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br concentration in 25 mL of the
asked by chelsea 
Math
Using the terms factor,divisor,multiple,product,and divisible write as many statements about 6x8=48. My son is in learning support and has this problem and I don't know how to help him I am not good at math. Thank you for any assistance. Tyrone's mom
asked by Tyrone 
Physics
A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.34 105 Pa and the speed is 0.038 m/s. What is the pressure at the narrow end of the segment?
asked by Dante 
calculus
Can you give me a good website on the topic, slope fields and differential equations? I need to match six slope fields with the correct differential equation. 1. dy/dx=xy 2. dy/dx=1+x 3. dy/dx=cosx 4. dy/dx=2x 5. dy/dx=x+y 6. dy/dx=y(2y)
asked by Anonymous 
U.S. History
What was the bicameral legislature exactly?
asked by Aleah 
please help edit my outline for public speaking
Badminton Specific Purpose: To inform my audience about the laws of the game, equipment, and badminton strokes.
asked by shylo 
Physics
A glass ball, ball A, of mass 6.0 g moves at a velocity of 19.0 cm/s. It collides with a second ball, ball B, of mass 9.0 g, moving along the same line of velocity of 11.0 cm/s. After the collison, ball A is still moving, but with a velocity of 8.0 cm/s.
asked by Jessica 
Algebra 1
Traingles C and D are similar. The area of triangle Cis 47.6in2. The base of triangle D is 6.72in. Each dimension of D is 6/5 the corresponding dimension of C. What is the height of D? How in the world do you this problem!! Please help BIG TEST TOMMOROW!!!
asked by Grace 
MATH
Please help me with these problems. Work and answer is appreciated! :) thanks. 1. Find on the interval theta is greater than or equal to 0 and less than 2pi; then find the general solution: 5tantheta+1=2.89 16cos^2theta6=3 6sin^2theta+sintheta=2
asked by gf 
Science
Explain the main differences between budding and regeneration.
asked by Judy 
CHEMISTRY
If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even
asked by Kate 
AP CHEMISTRY
If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even
asked by Kate 
Math  Continuity
Determine the constants a and b so that the function f is continuous on the entire real line: f(x) = 2 , x=
asked by Jona 
spanish
complete the sentences with the correct demonstrative adjectives  I answered below the questions are my answers correct? ______(that) camisa del algodon no? Prefiero cosas de algondon. Que piensas de ______ (these) pantalones? 1. esa 2. estos Ya no tiene
asked by sam 
What does the following ...... mean ??
Since English is my second language, I have difficulty understanding the language overall. So, if someone can please translate the following to simple terms without missing key concepts, that'll be appreciated! The Masterstroke That Launched A Masterpiece:
asked by English as my second language 
physical science
flourine is a halogen is it also a nonmetal
asked by liz 
ENGLISH
If someone has time can someone help me out I have to create a plan for upper management and them do an outline how would i prepare the plan. Any help will be great to start me off with. It deals with the topic of me being a secretary i am new in the job
asked by student acc 
spanish Sra JMcGuin
thanks is it  Los flores cuestan dieciocho dolares. we are suppose to use one of the 4 phrases to answe the 6 questions could you check this please. Gaby is buying a gift for her dad what might she say in reacting to those items? choices  que caro! Que
asked by sam 
chemistry
Substition reactions in Alkyl Halides. If it is a secondary carbocation I know it can be SN1 or SN2 and the solvent used can help determine which. Is an aprotic solvent SN1 or SN2?
asked by AMY 
Science
Explain the main differences between budding and regeneration.
asked by Madison 
Math
What is the name for the bottom number of a factor.
asked by LaNaya 
Electromagnetic inductioncheck answers
Please check my answers: why does an iron core increase the magnetic iduction of a coil of wire? I am thinking it has something to do with the voltage being increased. Will a cyclist coast farther if the lamp is connected to the generator on his bicycle
asked by Soly 
physical science
are alkali metals or alkaline earth metals soft silver  white, shiny metals
asked by liz 
math
Is the answer is correct ?? lim ((x^10)1)/(x1) x>0 is the answer is 1 ???
asked by mo 
Preschool question
For many children,the development of imagination affects the development of which? empathy,intellect,literacy, or parallel play skills Is the right answer empathy?
asked by Anonymous 
english
hi i was just wondering if this makes sense and if it is a good remembrance day poem: Restless nights, awake in a nightmare Endless worrying of what would await Making it through, one day at a time Expecting death, a constant companion Many mens fate
asked by lucy 
Science
When you weigh zinc powder and then burn it with a bunsen until it turns yellow, why does it weigh less? Please can someone help me because it is in for tomorrow and I have no clue.
asked by confuzzled girl 
Math
Hi. I have trouble calculating money or change for purchases mentally. Could you give me some strategies to help? My difficulty is also doing it quickly so I know the right amount to give/check for. Thanks!
asked by Naeem 
CHEMISTRY
What would be the uncertainty in velocity (miles/hr) of a neutron beam particle if the position can be measured within +/ 25 angstroms. The rest mass of a neutron = 1.67493 X 10^27 kg or 1.008664904(14) amu. I know you have to use the heisenberg
asked by Jacob 
Philsophy
how would i apply the princple of privacy to charles darwin and his reluctance to publish his results on natural selection? (princple of privacy= respect personal privacy and confidentality) as in, how would i explain that he had no moral obligations to
asked by Student who hates philosophy 
Literature Julius Caesar
During act 1 scene 2 in julius caesar Brutus begins to consider a mighty ambition...What is it and why could it be dangerous for him?
asked by Jennifer 
Science
Explain why it is an advantage for organisms to have more than one means of reproduction
asked by Madison 
Character Education
Can you find any information that Character Education benefits from volunteering? Also, does raising money in a school for a cause usually work?
asked by Anonymous 
math
if i have 12 markers,but one sixth of them work.wich one is equal to one sixth. A.10/12 B.8/12 c.4/12 d.2/12 Show work
asked by randy 
math
if 15 counters are the whole set, how many are 3/5 of the set?
asked by Eric 
AP chem
This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although
asked by Corey 
history
How does the nationalism that developed over the Berlin Wall in Germany differ from the situation in Northern Ireland with the Catholics and Protestants?
asked by courtney 
science
what is the size of a xrays?
asked by ziggy 
Physics
The launching speed of a certain projectile is 6.4 times the speed it has at its maximum height. Calculate the elevation angle at launching. I have noo idea how to start this one. Please help!
asked by Lindsay 
Writing
I'm writing a paper on comparing and contrasting the emotional characteristics of Elizabeth from Pride and Prejudice and Jane from Jane Eyre, and need help with my thesis. My working thesis is: Elizabeth Bennett and Jane Eyre tend to let subconscious
asked by Angela 
sra JMcGuin
How would you ask how much the following items cost. Model that tie Cuanto cuesta esa corbata? 1. these socks answer: Cuanto cuesta estos calcetines 2. those pieces of candy answer: Cuanto cuesta esos dulces 3. that board game answer: Cuanto cuesta juego
asked by sam 
science
Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases
asked by liz 
spanish sra JMcGuin
Look at the following items and write a sentence telling how much they cost. 1. disco compacto $15.00 answer: el disco compacto cuestan quiense dolares 2. camisa $20.00 answer: la camisa cuestan vente dolares 3. pantalones $20.00 answer: Los pantalones
asked by sam 
Food and Nutrition
Hi, I am doing a report on Dextrose, a food additive and i can't find the disadvantages and advantages of using this substance along with any possible allergic reactions.
asked by Sarah 
spanish Sra JMcGuin
Hi I have 4 work sheets to do tonight I do not get home home until about 6pm what time are you on.
asked by sam 
Science
Topic: Air Pollution Who is creating the most and polluting the most?
asked by Jay 
Science
Esplain how the north pole of the bar magnet got its name?
asked by Susan 
math
Jackies kitten is stuck on the window sill of her neighbors house. The window is 2.8m above the ground. The base of the ladder must be 0.7m away from the house and the ladder must extend 1m above the window sill. Will she be able to rescue the kitten,
asked by riley 
sra JMcGuin spanish
Hi  free period  I hope to haev it completed by 7:00 pm tonight it takes me some time to type the questions nad my answers. That was why my mom suggested a private tutor so we could fax or work at my home. My advanced math tutor gets 70.00 an hour.
asked by sam 
Accounting
On the balance sheet it states that bonds payable is $32,000 and Discount on bonds payable is $2000. When it says that the company retired the bond at net book value, does that mean they cashed out $30,000 and that's the amount that goes into the Cash Flow
asked by Fred 
english
whats a good word for a quality that someone has i cant think of the right word. like if someone was brave or courageous, the courage that that person ______ ??
asked by brooke 
Statistics  Probability
Viruses reach networks by requests for communication that are identified as packets. A security system can detect them if at least one such packet is observed by a network sensor. Assume that the probability of observing a single packet sent from a new
asked by Jason 
homework ath physics
how to become en expert?
asked by david 
Jupiter
Why does Jupiter spin?
asked by Morgan 
math
integrate: (x^2 + 1)^k dx
asked by mathstudent 
English In Cold Blood
Does In Cold Blood by Truman Capote have a protagonist? is it Herb Clutter, Dewey, or Perry? If so, does that make it a creative work? If not, explain how it is simply eloquent journalism.
asked by Joe 
trigonometry
I have the trigonometric equations: y=3+2sec(pi/8)(x3) y=12+4cot(pi/6)(x1) y=3+7csc(pi/4)(x1) how do I make these into sine, cosine, and tangent equations so that I can work with them more easily?
asked by kenny 
math
the sum of Jared's age and kayla's age is 21. kayla is 5 years older than jared. How old are kayla and jared??
asked by taylor 
science
Why can you see a redcolored light coming from the heating element of an operating toaster?
asked by Emily 
Social Studies Inventions
when was the first t.v made? and where was it made?
asked by helpp me! 
math
how many hours must darcey work at $13.50per hour to earn $472.50=
asked by courtney 
Art
Which African society produced musical instruments as artwork? Ancient kingdoms, Ottoman Empire, Nomadic cultures, or Sedentary Farmers? I believe that it is the Ottoman Empire.
asked by Tabetha 
math
Use the digits 0, 2, and 5 to make a 3 digit number that has both 2 and 5 as factors.
asked by LaNaya 
math
Compare 1/3 of 60 to 1/5 of 100.
asked by LaNaya 
math.algebra
i need help with this problem: If the square of 2 less than an integer is 16, find the number(s).
asked by kim 
Business
Why are employees viewed as adding value to market capitalization
asked by Stacy 
math
How do you find the surface area of a sphere?
asked by Anonymous 
business
what is a competitive relationship name explain examples
asked by derek 
U.S. HIstory
Why might the early years of American government be called the "Critical Period"???
asked by theXskirtXgirl 
Earth Science
How can a metamorphic rock change into another type of metamorphic rock?
asked by Camron 
DT
What are the three main properties of a Conker shell ?
asked by Jenna 
science
What is the male & female part of a plant?
asked by cmt 
math
Which is the greater fraction? 2/7, 4/7 or 6/7 and how do you figure this out?
asked by alyson 
math
if 20 counters are the whole set, what fraction of the set is 16 counters?
asked by Eric