Questions Asked on
May 8, 2007

phyiscs
Many kayaks are made of plastics and other composite materials that are denser than water. How are such kayaks able to float in water? Does the kayak displace water? What exactly is Archimedes's Principle?
asked by Anonymous 
physics
Which of the following objects will float in a tub of mercury? a. a solid gold bead b. an ice cube c. an iron bolt d. 5 mL of water The three less dense materials will float on mercury. Look up the density of all four.
asked by Anonymous 
Physics
When light of a certain wavelength is incident normally on a certain diffraction grating the line of order 1 is at a diffraction angle of 25 degrees. The diffraction angle of the second order line is : a) 25 b) 42 c) 50 d) 58 e) 75 I am not sure how to do
asked by Susan 
Physics
A trapeze artist, starting from rest, swings downward on the bar, lets go at the bottom of the swing, and falls freely to the net. An assistant, standing on the same platform as the trapeze artist, jumps from rest straight downward. Friction and air
asked by Papito 
Circumference and Area of Circles
can someone help me with these:Find the radius, diameter and circumference of a circle with an area of 64 cm2. Write your answers as decimals rounded to the nearest hundredth. Find the circumference and area of a circle that has a rectangle inscribed
asked by mike 
chemistry
I have the chemical equation: CH4 + NH3 + O2 => HCN + H2O, I have to write a balanced equation using the lowest whole number coefficients, including the state of each compound  HELP PLEASE http://www.daigger.com/equationsbalancer.jsp All are gases, even
asked by Desmond 
~Chem
I was looing over this question and the answer I got was not correct, I noticed that somone already posted this question up before but maybe if I provide the answer I could get an understanding of the steps. @462degrees the reaction heat + 2NOCl 2NO + Cl2
asked by Jason 
Chemistry
srry I placed the question in the wrong spot. The equation is 2NH3 N2 + 3H2 1 mole of NH3 injected intoa 1L flask 0.3 moles of H2 was found the concentration of N2 at equlibrium is 0.1M how do I find the concentration of NH3 at equlibrium? (N2) = 0.1 (H2)
asked by Bethany 
Foreign Language, How to use a dictionary.,
First of all purchasing a good English/X and X/English dictionary is an investment in your future. For "generic" purposes X represents any foreign language (French, Spanish, Japanese, etc.) Here is the "key" to using a dictionary for a vocabulary
asked by SraJMcGin 
Math  Counting
Hi. The question is: A, B, C, and D are nodes on a computer network. There are two paths between A and C, two between B and D, three between A and B and four between C and D. Along how many routes can a message from A to D be sent? My thinking: I came up
asked by Iah 
physicsenergy conservation
when you apply the brakes of a car its kinetic energy or energy of motion decreases. a)to what form of energy is the kinetic energy converted? b)where does the resulting energy end up? Do the brake drums on the wheels heat up? so does it convert into heat
asked by Emma 
Chemistry``
A substance (CD) decomposes into C and D. CD(g) C(g) + D(g) At the temperature of the experiment, 15.0 percent of CD is decomposed when equilibrium is established. a) If the initial concentration of CD is 0.200 mol/L, what are the equilibrium
asked by Linda 
biology
describe two practical applicatons for being able to extract DNA from cells Since this is not my area of expertise, I searched Google under the key words "DNA extraction use" to get these possible sources: http://en.wikipedia.org/wiki/DNA_extraction
asked by Anonymous 
spheres
Find the Volume of a hemisphere with a diameter of 17 cm. Use pi = 3.14 and round to the nearest hundredth. can some one show me what i'mdoing wrong? this is what i got: 4/3*3.15*17^3 you forgot to split the diameter in half to get the radius. You used the
asked by mike 
science
1.) Any object having a very large mass would necessarily have a very large weight. true or false? False 2.)For a freely falling object, A) the total distance covered doesn't change. B) the velocity doesn't change. C) the acceleration doesn't change. D)
asked by mike 
math
the length of a rectangle is 6 cm more than its width. the area is 11 cm squared. find the length and width. look at the post by anonymous at 8:55, it is almost the same as yours. Do it the same way. length= x+6 width=x x(x+6)=11 x^2 + ^x =11 x^2+6x11=0
asked by help me plz 
Physics HELP!!!!!!!!
A string is attached to a wall and vibrates back and forth, as in Figure 17.18. The vibration frequency and length of the string are fixed. The tension in the string is changed, and it is observed that at certain values of the tension a standing wave
asked by Mary 
Education
Does the Individuals Disabilities Education Act (IDEA) and the Education for the Handicapped Act Ammendments of 1986, focus on services provided to families, children, communities, or to schools? I am thinking they provide services to families. Don't they?
asked by Shyanne 
finacial question
is there anywhere i can find this information or if someone could help me with it... who are the internal and external users of a company's financial statements? For what purposes do they use this information? External users include stockholders and
asked by jasmine20 
Economics
(This homework question was removed due to a copyright claim submitted by K12 Inc.) What do you think???? I think it might be a merit good. I think the government has to provide a free education but am not sure why.Is this right? First, I cant think of any
asked by Christian 
Chemistry``
I answered this question but I did not get the right answer. CO2 + H2 H2O + CO CO2 = 0.5 mole and H2 he 0.5 mole both sollutions were forced into a 1 Litre container. K = 2 what is the equlibrium concentration of each reactant and product. as I calculated
asked by Linda 
Physics Help!!!! Please check
We had worked this one out before but due to my bad note i really don't understand what is going on in the question. Following the question I will post what I wrote done. Please help me make some sense of it. A 3.2 kg block is hanging stationary from the
asked by Mary 
physics
when a power station converts chemical or nuclear energy to electrical energy it converts about 50% of the energy to low grade heat suggest how people could use this energy before the power station operators allow it to enter the environment. why is this
asked by Emma 
physics
jack measured that his racquet gives a squash ball 45.0J of kinetic energy when he hits it with a particilar shot.he also measures that it has 18.0J of kinetic energy after one bounce off the court wall. what percentage of its mechanical energy does the
asked by Emma 
MathFast pleasee :]
Which of the following is the equation for a line parallel to the yaxis & passing through (3,2)? a) x=3 b) y=2 c) y=3/2 D) x=2/3 I know in slope intercept form it would be y=mx+b. But how do i do this in standard form? any vertical line has the equation
asked by Emily 
Economics
1. What is the % of GDP is the national debt? My Answer: The percentage of GDP is national debt is approx. 77%. Is this correct? I went and used the latest figure of Real GDP which was the third quarter of 2006 being $11,443,000,000,000.50, which came from
asked by Sarah 
physics
Can someone check these? 1. What device, developed in 1970, is able to make images of individual atoms? 1. The Xray crystallographer 2. The laser 3. The Brownian motion detector 4. The scanning electron microscope My answer: 4 2. Which of the following is
asked by jake 
Physics
Can you please help with this problem. I don't know how to solve it at all. A uniform solid disk with a mass of 32.3 kg and a radius of 0.464 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk. (a) What is the
asked by Jim 
Toilet Paper
I am studying the history of toilet paper. When and how was toilet paper invented? What did people use before the invention of toilet paper? What are some of the future advances in Toilet Paper manufacturing that we can look forward to? Thank you, Fred
asked by Fred Mullens 
Calculus
Why can't a equal 1 in y=log(base a) x. And why is x always positive in that? Hmmmm. a^y=x (from the problem statement). If a were to equal 1, then x would be 1 (1 to any power is 1). So if a is not one, but a positive number, then x has to be a positive
asked by Raj 
macroeconomice
Will marginal propensity to spend (d) will be low if, propensity to import (m) is low, marginal propensity to consume (b) is low and tax rate is (t) is low? Take a shot. Do some research, then tell us what you think. hint: think about how each of your
asked by tinky 
Cultural Diversity
I need help with this question: It is culturally assaultive when: 1. parents try to discuss their cultural beliefs with the teacher. 2. a teacher tells a child his behavior is unacceptable. 3. a teacher does not accept a family's cultural differences. 4. a
asked by Amy 
Science
Which substance is NOT a mixture. A. Soil B. Concrete C. Soda D. Gold Which of those substances do you think is not a mixture? Which is only made up of one thing?
asked by Missy 
physicsenergy conservation
some people refer to heat as "low grade energy. a)how is low grade energy different from high grade energy? b)give two example of high grade energy When heating a cup of tea, which would be preferable...a stove with a burner on top, or a heating pad? High
asked by Emma 
Algebra
Find the vertex of the functions given below. 1. y=(x4)(x+2) 2. y=2x^24x+1 The midpoint of the xintercepts of a parabola has the same x value as the vertex. the xintercepts are obviously x=4 and x=2 so the x value of the vertex is...... sub that back
asked by Algebra student 
Chemistry
If one mole of the compound Al4C3 has a mass of 144g and one mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium. 4 Al + 3 C=144 C=12 4 Al + 3 *12=144 solve for Al So C=36 which leaves 108 divided by 4  so 1 mole
asked by Desmond 
Calculus  Challenge question
Our teacher gave us this problem as a challenge. Some of us have been working on it for a few days help! Prove that the largest area of any quadrilateral is obtained when opposite angles are supplementary. Wow, what a classic and nice question, haven't
asked by Monica 
Science Food Chain
Hey, I'm doing a report on the Savannah Animal Food Chain and I can't find a picture of one! Or even what eats what! Can someone help me here? I don't know whether you are seeking a picture of the food chain or of specific animals involved in the food
asked by Kirby 
history of sport
Name the first baseball player !@#$%^&ceived the first 1 million dollar contract in history?
asked by SAM 
unscramble word
Try these: http://www.ssynth.co.uk/~gay/anagram.html http://wordsmith.org/anagram/ http://www.unscramble.net =) what is aenco?
asked by Writeacher 
business law
Hi can you tell me if i am opening a videogame company. What will be my LLC, reason for selecting that entity. Go over the pros and cons for a business to select an LLC over the other possible business entity types. Then ask, what business entity type is
asked by Ronnie 
Child Develpoment Question
Can you help with this question? As a caregiver of an infant, meaningful communication between you and the parent, gently introducing new parenting techniques, can sometimes be done lightly by which? A. "talking through the baby." B. waiting until the
asked by Rachel 
algebra
Help with these please?! Simplify the complex expression: 3  5  + y x and 2  + 2 x+4  3  + 1 x+4 I cannot decipher what you meant to type. Try using parentheses instead of changing to a new line for fractions. 3/[(5/x)+y] (2/x+4)+2 over
asked by Annabelle 
social studies
can you help me with my project about the women in the west? what do you need to know?
asked by Lakyna 
Retorical Devices
What is the role of rhetoric in influencing people's attitudes and beliefs? Please tell us what you think, and we'll be glad to add our comments and critique. I really love this website. I just went back to college. And thank goodness fortechnology. Use
asked by Maree 
MacroEconomics HELP!
I just need a little help on a few questions:  Why does a tax cut have a smaller multiplier than a hike in government spending if its the same amount?  Federal tax drops from 20 to 30 percent. Due to that income increases from 600BLN to 800BLN, logical
asked by Anonymous 
math
What is the formula for Volume? Volume of what?
asked by mars 
Segments in a Circle
If PT = 5.3, TU = 3.8, and UV = 6.4. Solve for the measure of VS and round to the nearest hundredth. What is PT, TU etc Are they length of line segments? What kind of geometrical shape do you have? I can't figure out what you are asking.
asked by mike 
Enviornmental Science
What is the climate and physical characteristics of that biome and the types of organisms that live within it? You will have to specify the biome that is being discussed
asked by Serita 
Human Religious
Can you explain to me what is Hindiuism Religious? Here are several websites that will help, especially the first one (Wikipedia): http://www.google.com/search?q=hinduism&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7&rlz=1I7SUNA =)
asked by SERITA 
Algebra
what is the value of (n) ? (n+3)! = 5040 the prime factorization of 5040 = 2x2x2x2x3x3x5x7 since the ! function involves the multiplication of consecutive integers, it makes sense to arrange these factors so they form consecutive numbers. I got 2,3,4,5,6,
asked by abdo 
Organizational Psychology
How should companies mesh vision and goals with the system dynamics? Please tell us your ideas and we'll try to critique them. I think the main problem in answering a question like this written in pedantic language is to define the terms in plain English.
asked by Ivonia 
help
Okay I need to know which readability formula fit each one of these Scenarios. Scenario 1: The trip scheduled for Mexico during spring break has been cancelled due to the bankruptcy of the bus company. You must tell 25 of your classmates that the trip has
asked by noreen 
Nonverbal and Verbal Communication
Use the table below to compare and contrast characteristics of nonverbal and verbal communication for audiences in relaxed situations (family members and friends) and audiences in tense situations (supervisors and instructors). List at least three items
asked by Linda Wortham 
Math (Logarithms)
How do u do logarithms where there is a log on one side and a number on the other... Example 21.044=log(P/30) I don't want just an answer to the example, i need to know how to do it please... convert your log equation into an exponential equation.
asked by Emily 
science
what does an enzyme NEVER do with its substrate? the answer is 1 word that is 6 letters long. There are probably 300 words in any dictionary that will fit this. Do you have a vocab list in your lesson?
asked by michelle 
Dogs
Do dogs eat rodents, fish, and rabbits? no. dogs do not eat any of those stuff. except maybe fish. Many dogs will eat anything they can get there jaws around. They aren't particularly picky. I won't tell you what mind get into.
asked by Lily 
animals
Do dogss eat rodents, fish, and rabbits? This is a school project. Someone help me PLZ!!!! Thank you for using the Jiskha Homework Help Forum. Since dogs are carnivors, yes they could. However it's my cat that catches rodents and leaves the headless
asked by swm4ever 
Math  Complex Numbers
Could someone show me how to get the work for: 3/4 (sqrt)16/25 ? The answer says 3/5i. Could anybody tell me how to get there and work with complex fractions and simplify them? Thanks! 3/4 SQRT(16/25) 3/4 SQRT( 16/25*1) 3/4 *4/5 *SQRT( 1) but the sqrt
asked by Danielle 
algebra
3/[(5/x)+y] Can someone please tell me how one goes about simplifying this? Multiply numerator and denominator by x. would the answer be 3x/5+y? No. YOu forgot to multpy the y by x, it would have an xy in the denominator. gotcha thanks
asked by Anna 
Algebra
Please show me how to solve this problem. 8/x^216 + 3/4 = 1/x4 multiply each of the terms by x^2, collect your like terms and bring them all to the left side. You will have a quadratic equation. BTW, since you did not use brackets I will assume your last
asked by Marie 
English
What differentiates the act of grouping people from the act of stereotyping? How can stereotyping effect group relations? Here are some sites that will help you with this question. http://www.remember.org/guide/History.root.stereotypes.html
asked by Queline 
maths
6y=93x rearrange for x= Change 6y = 9  3x to: 3x = 6y + 9, then solve for x by dividing both sides by 3 to get: x = 2y + 3 when you divided both sides by 3. there is a rule where you cant divide the answer if theirs an addition sign. so 3x=6y+9
asked by forest 
science
Couple of questions. Why does the earth keep moving? The engine of a rocket applies a continual force to push the rocket along. When the engine stops what will happen? I think the rocket will stop acceleration You need to be aware of the concept of
asked by Kim 
midpoint question
find the midpoint between these points (2,7)and (8,5) thank you midpoint is (sum of the x values/2,sum of the y values/2) (really you are just finding the "average" of the x's and y's.) tell me what you get.
asked by cecilia lopez 
english
my writing is not very nice and neat should i practice more Here is what you can do: Start a Journal (blank book), writing on alternate pages. Write in it every day. Weekly, give it to a trusted friend (mom, aunt, friend) who can take the journal and mark
asked by sophie 
Math
What is a "sample space" when you are listing outcomes? Pls respond!
asked by Hi 
math
the length of a rectangle is 1 cm less than twice its width. the area is 28 cm squared. find the dimensions of the rectangle. Just translate the English into "math" "the length of a rectangle is 1 cm less than twice its width" l=2w1 "the area is 28"
asked by anonymous 
Calc
1. Determine an expression for dy/dt if x^2+2y^2=8 and dx/dt=3. 2. A point is moving along the right branch of a hyperbola defined by 4x^2y^2=64. What is dy/dt when the point is at (5, 6) and dx/dt=3? I will start you on the first, using implicit
asked by Icy 
Public Policy
Drawing on the courses in the public policy stream of the curriculum, answer the following question. Assume you have been asked to set up a policy analysis unit in the state of Ohio. The unit will report directly to the Governor and will be responsible for
asked by Jason 
Dogs
Thank you for using the Jiskha Homework Help Forum but posting so close together is considered "flooding." Only repost if you don't receive an answer in several hours. The volunteers here are not on 24/7.
asked by SraJMcGin 
English
I've went over many search engines and I still cannot find anything to do with competetion betweeb employees can someone help thnnkx Please state your complete question. If you posted something earlier, I don't remember the question. Thanks. =)
asked by QAE 
Algebra
Solve the polynomial x^2+35x+27 Is this polynomial equal to something? Assuming it is equal to zero x= (35 + sqrt (35^2 4*27) )/2
asked by A 
Algebra
Take the reallife situation and create an equation or inequality that could be used for analysis, prediction, or decision making. Then, draw a graph to depict the variables in your situation. Use your graph and what you know about linear inequalities to
asked by Jon 
Math
2.50x + 1.75y < or = to 15 y < or = 1.43x + 8.57 y = 8.57 I'm having a brain cramp and trying to find x has been a lost time tonight. Plese help what is x The second inequality can be derived from the first one. The third statement, y=8.57, does not follow
asked by Amanda 
Biochemistry
I'm desperate and I cannot find the answer to this question.... As the name implies, globular proteiens tend to have a roundish, globular shape. What types of side chains might you expect to find on the amino acid residues that face the outside of a
asked by Sam 
Science
I'm desperate and I cannot find the answer to this question.... As the name implies, globular proteiens tend to have a roundish, globular shape. What types of side chains might you expect to find on the amino acid residues that face the outside of a
asked by Sam 
macroeconomice
Will marginal propensity to spend (d) will be low if, propensity to import (m) is low, marginal propensity to consume (b) is low and tax rate is (t) is low?
asked by tinky 
Math
It's been a long time!!!! but I need to express a ratio of 5416 to 9934 in the form of 1 : x give answer to 1 dec point. All I could get was 2708 : 4967 but it doesn't appear right. 5416/9934 = 0.5452, or 1/1.83419 in 1/x format If you want the answer to
asked by kevin 
math
How do you simplify this? 1/{(x/y)+1} multipy numerator and denominator by y. y (1)/y(x/y +1) then simplify y/1+x?
asked by Drew 
physics(airplane)
Hi, Does anybody know any websites or ideas of how to make an airplane without any paper (cardboard is allowed). Please help.
asked by Ron 
segments in a circle
If PT = 5.3, TU = 3.8, and UV = 6.4. Solve for the measure of VS Is there a figure that goes with this question? Without some further description, we can't help you.
asked by mike