Questions Asked on
March 22, 2007

PHYSICS
The masses and coordinates of four particles are as follows: 40 g, x = 4.0 cm, y = 5.0 cm; 30 g, x = 5, y = 0.0 cm; 40 g, x = –5.0 cm, y = 3.0 cm; 20 g, x = 3.0 cm, y = 2.0 cm. What are the rotational inertias of this collection about the (a) x, (b) y,
asked by wolfpak 
A few chemistry
I got the rest of the homework, but these are confusing me so much...ugghhhh. 1. The pH of a .400 M solution of iodic acid, HlO3, is .726 at 25 degrees C. What is the Ka(acid constant) at this temperature? 2. The pH of a .150 M solution of HClO is found to
asked by Trish 
chemistry check
A) Write a balanced chemical equation for the reaction between sulfuric acid and potassium hydroxide. I got H2SO4 + KOH > H2OH + KSO4 B) Write the ionic equation for the reaction. H2 + S2O42 + K + OH > H2 + OH + K2SO42 C) Write the net ionic
asked by jon 
Econ MC
!@#$%^& owns a dog whose barking annoys !@#$%^&'s neighbor Jane. Suppose that the benefit of owning the dog is worth $700 to !@#$%^& and that Jane bears a cost of $500 from the barking. Assuming !@#$%^& has the legal right to keep the dog, a possible
asked by Econ 
chem
How do you balance this equation?: (NH4)2SO4+Ca(OH)2==>CaSO4+NH3+H20 Thanks! 2 NH3 2H2O Others are ones. (NH)2SO4 + Ca(OH)2 > CaSO4+2NH3+2H2O Thanks!
asked by Fidelia 
math
tan (uv) given sin u=3/4 and cos v= 5/13 with U and V in quadrant 2 Use the identity tan (uv) = (tanu tanv)/[1tanu tanv) Get the values of tanu and tanv from the sines and cosines that you are given. For example, if cos v = 5/13, sin v = 12/13 and tan
asked by lauren 
BIOLOGY
IF A NUCLEUS HAS EIGHT CHROMOSOMES DURING INTERPHASE, HOW MANY CHROMOSEOMES DOES IT HAVE DURING METAPHASE? HOW MANY DOES IT HAVE AFTER MITOSIS IS COMPLETE?
asked by Kim 
chemistry
how do u calculate the percentage of water of cystallisation in FeSO4.7H2O percent water= 7*molmassH20/molmassFeSO4.7H2O * 100 now to get the mole mass of FeSO4.7H2O * 100, it is the sum of the atomic mass of one Fe, one S, four O, 14H, and 7 O.
asked by janet 
Chem
Given E° (Al3+Al) = 1.66V and E° (Ag+Ag) = .80V, calculate the overall cell potential when the two halfcells are connected. My answer: E°cell = E°(cathode)  E°(anode) E°cell = .80 + 1.66 = 2.46 Is this correct? That's right.
asked by Marisol 
PHYSICS
The masses and coordinates of four particles are indicated in the following table. 40 g
asked by wolfpak 
science
Please unscramble acronoc,glataroil, frete, estoroit, whockudoc. http://wordsmith.org/anagram/
asked by Les 
Chemistry
Is this correct? Thanks. What is the standard cell potential? Pb2+ ( aq ) + 2e „³ Pb (s) 0.13V Mn2+ ( aq ) + 2e „³ Mn (s) 1.19V Pb2+ ( aq ) + 2e „³ Pb (s) 0.13V Mn (s) „³ Mn2+ ( aq ) + 2e ¡V +1.19V The electrode potential for a given cell,
asked by key 
math
find all solutions in the interval [0,2 pi) sin(x+(3.14/3) + sin(x 3.14/3) =1 sin^4 x cos^2 x Since sin (a+b) = sina cosb + cosb sina and sin (ab) = sina cosb  cosb sina, the first problem can be written 2 sin x cos (pi/3)= sin x The solution to sin x =
asked by lauren 
chem
hey guys I posted this awhile ago im not sure if anyone has read it or whatever but here it is again find the PH of a .00580 M solution of the strong base KOH. is it log(.00580)= 2.24 pOH = log[OH] pH + pOH = 14.00 Therefore, pOH = log(.00580) pH +
asked by chris 
Social
What was the bonus army, why were they protesting and what happened to them? i cant find this anywhere soooo plez helppppp thanks
asked by Joe 
ap chemistry
What is the concentration (in M) of hydronium ions in a solution at 25 degrees C with a pH = 4.282? i got 5.22 x 10^5 ? right on the money.
asked by Jaron 
Chemistry
Given the following information about xenon normal boiling point = 108 degrees C normal melting point = 112 degrees C triple point = 121 degrees C at 281 mmHg critical point = 16.6 degrees C at 58 atm a) Construct an appropriate phase diagram for xenon
asked by Christopher 
Science
I would like to know does this statement makes a good hypothesis for my paper(or)can someone give me some type of insight on how to word it correctly. "My paper will prove that homosexuality is a phenomenon that maybe due to biological factors,
asked by GIGI 
sci/chemistry
when 1.87 g of gypsum(hydrated calcium sulfate) was heated to constant mass, it lost 0.39 g of water. What is the formula of gypsum? YOu know it is of the form: CaSO4.XH2O the idea here is to find x. calculate the number of moles of water in .39g.
asked by jas 
Carbon Isotopes
I have a problem with my tree core samples. After graining them with a WigLBug, we noticed that some of the plastic material which the capsules of the WigLBug are made with was mixed with our samples turning a little dark the samples. We didn’t pay
asked by Domingo Sancho 
Physics
I have no idea of how to solve this problem. Please help. lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.200 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg
asked by Jim 
physics again
Why don't sparklers burn you? i don't understand if they're hot then how do they have little heat? and were learning about electric forces so it must have something with that Sparklers produce light by means of an electroluminescent reaction. A chemical
asked by naomi 
Physics
A personne walking at a speed of 1.7m/s see's a stoped bus 25m from him. At this moment this person starts to run with an acceleration of 1,3m/s2. After 4 secondes this personne has reached his maximum speed et it stays constant, but at the same time the
asked by Nick 
7th Grade Math
Please help  I don't know where to begin. My problem is this: Find the numbers "Y" and "Z" if (1 and 3/5 times "Y") + (3/5 times "Z") = 5 AND (1 and 3/5 times "Z") + (3/5 times "Y") = 6. Thank You! change 1 and 3/5 to another fraction: 8/5 so the equation
asked by Kyle 
science/chem
calculate the percentage composition in NO2 Figure the mol mass of NO2 (atomic mass N + 2*atomic masss O) percent N= atomicmassN/molmassNO2 * 100 percent O= 2*atomicmassO/molmassNO2 *100
asked by racheal 
Economics
How do you proceed in calculating exchange rates between countries and what data do you need? Exchange rates are simply market prices of foreign currencies. The price can fluxuate on a daily basis. So, are you asking how you would build a model that
asked by joe 
math
I am a positive integer less than 100. two more than my value is a multiple of 6. the sum of my digits is a multiple of 7. I must show all my work This kind of problem can't be solved by writing and solving one or two equations. You have to use "trial and
asked by steph 
Acounting 202
Dokken & Dietrich’s Donut Company pays for 25% of its inventory purchases in the month of the purchase and the remainder in the following month. The company’s inventory purchases totaled $840,000 in October, $920,000 in November, and $600,000 in
asked by merceda 
Honors Algebra II
A runner and a walker begin on a track (oval shape) 1 mile in length at the same spot and depart in opposite directions. The runner goes steadily at 9 mph while the walker goes at a steady 3 mph. How long before they meet again? Show your work! Let the
asked by Nicole 
chem
For this problem, will someone please check my answer? How many grams of oxygen are produced in the decomposition of 5.00g of potassium chlorate? KClO3(s)>KCl(s)+O2(g) [the equation may not be balanced] My answer is 1.96 g of O2. The balanced equation
asked by Fiona 
Geog
if the temperature at sea level is 70 degree F , according to the normal of average lapse rate of 3.6 degree F/1000', the temperature at 10,000' would be what? show work plz Please note that we don't do students' homework for them. Once YOU have come up
asked by matt 
Geog
2 at sea level the air temperature is 80 degree F. this air reaches the dewpoint at 6,000’. The air continues to rise, pushed up by trade winds, over a mountain that is 12,000’ high. If the dry adiabatic rate is 5.5 degree F/ 1000’ and the wet
asked by matt 
Physics  drwls
Posted by winterWX on Monday, March 19, 2007 at 11:51pm. A 2600 kg truck traveling north at 38 km/hr turns east and accelerates to 55 km/hr. What is the change in the truck's kinetic energy? What is the magnitude of the change in the linear momentum of the
asked by winterWX 
Biology
1. In an experiment, a man drank a litre of water, his urine output increases so that after hours he had eliminated the extra water. When he drank a litre of 0.9% of sodium chloride (common salt), there was little or no increase in his urine production.
asked by Uduak 
Math
I have a question I am having a hard time with..... 2 more than 6 times a number divided 3 Would this be read as (6p / 3) + 2 or 6 (p/3) + 2 thank you for your help!!! Both are correct. In the second one, 6 is equal to 6/1, so when you multiply it by p/3,
asked by M 
grammar
Richard III supposedly had the young princes murdered. Never found out what really happened to them. Thank you for using the Jiskha Homework Help Forum. This should not be labeled "grammar" but "English." There was a lot of supposition about who exactly
asked by Anonymous 
us history
agree or disagree? During the 1920 stock amrket crash, tbankers invested their depositors money in unsound investments. Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please repost and
asked by jessica 
Re: Physics  drwls #2
Posted by winterWX on Monday, March 19, 2007 at 11:54pm. A small block of mass m = 4.0 kg can slide along the frictionless looptheloop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the
asked by winterWX 
Humanities 130
What events and figures have shaped the development of Islam in the United States? Check these sites about the development of Islam in the U.S. (Broken Link Removed) http://en.wikipedia.org/wiki/American_Muslim
asked by Mike 
Calc
Does 1/ln(x+1) converge or diverge? I've tried the nth term test, limit comparison test, and integral test. All I get is inconclusive. The other tests I have (geometric series, pseries, telescoping series, alternating series, and root tests) don't apply.
asked by Mischa 
PHYSICS
The length of a bicycle pedal arm is 0.152 m, and a downward force of 146 N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm's pivot point when the arm makes the following angles with the vertical? (a)
asked by wolfpak 
spelling
need a tongue twister out of these words stitch,switch,speech,stretch,scratch During my speech, I wanted to stretch to reach the switch to scratch the itchy stitch. Say that three times really fast.
asked by josh 
Systems Physiology
One morning you are lying in a meadow under the blue summer sky of Connecticut. You notice a small bird (likely a song sparrow but unfortunately you have forgotten your binoculars so you just assume) perched on a branch in the shade of an old oak tree. You
asked by mike 
English
Hello. I have a sentence that needs to be clarified. "In that country which begins at the foot of the east slope of the Sierras and spreads out by less and less lofty hill ranges toward the Great Basin, it is possible to live with great zest, to have red
asked by John 
Economics (& Public Policy)
I'm an idiot, but please let me know where to begin here. This is a distance learning course, and I CANNOT contact the professor, and cannot make sense of it in the textbook. If someone can please look at this and let me know where to begin, I thank you
asked by KP 
Language Arts class
Can you help me unscramble these words to make a sentence? bloom white lilies the were petals with and stems graceful the white bloom lilies with petals and stems were graceful . I don't think Keesha's answer makes sense, do you? Please rethink this and
asked by Nick 
Chem
I'm pretty sure this should be a fairly simple conversion factor problem, but I'm getting bad results. I want to go from molarity (mol/L) to density. Based on simply unit analysis, I figured that I could go in this direction: mol/L x g/mol x L/mL = g/mL
asked by Tasha 
social
After the dust bowl, many farmers moved East to New York because winds travel west to east? it asks if i agree or disagree n i don't know wat to say or were to look :( http://www.ac.wwu.edu/~stephan/Steinbeck/grapes.html Scroll down until you see the maps;
asked by rizzo 
Physics
why are you not harmed by the greaterthan1000°C sparks from a Fourth of Julytype sparkler? The sparks, while hot (high temperature), have little heat in them (low thermal capacity, or specific heat).
asked by Naomi 
algebra1
How do i solve this problem? 2(x3)3(x+5)=3(x2)7 what are the steps to solving this equation? HELP!!! Multply out the parentheses and then combine terms First step: 2x  6 3x 15 = 3x 6 7 x 21 = 3x 13 Nox add x + 13 to both sides of the equation
asked by jason 
Math
How many feet are in a mile? You can find these conversions on google by simply typing what you need to convert. For instance, "convert miles to feet" 1 mile = 5,280 feet
asked by Jennifer 
Genetics/biology Advice
Can anyone comment as to wether this solution is correct for this question please !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic
asked by Freddo 
algebra1
The equation: 6x(x+3) =5+2x First step in solving: 6xx+3=5+2x Write a clear explanation of what error has been made and what could be done to avoid the mistake. The + 3 should be a 3. should have been 6xx3=5+2x if you have brackets with only a
asked by keshia 
chemistry
A titration was performed on 50.0 ml of .250 M NaOH. After the addition of 71.4 ml of HCl,the phenolphthalein indicator changed from pink to colorless. What was the concentration of the HCl? im not sure how to figure this one out but here goes
asked by unknown 
ap chem
A 9.00 M solution of a weak acid, HA, has a pH of 1.30 1.) calculate [A] at equilibrium 2.) calculate [HA] at equilibrium Use pH to get (H^+). Ka = (H^+)(A^)/(HA) (A^) = (H^+). (HA) = 9 Plug and chug. Post your work if you get stuck.
asked by Jaron 
math
Rose's garden is in the shape of a trapezoid. The ht is 16m one base is 20m and the area is 224m2 find the length of the other base 290m2
asked by tony 
URGENT ECON QUESTION ABOUT DEMAND AND SUPPLY
ok this is the scenario 12. Industry: cell phones Event: 1.) cell phones are reported to cause brain tumors 2.) the cost of cell phone electronic chips are cheaper so in this scenario, demand decreases and the supply increases....thus demand shifts to the
asked by tofu 
ECONOMICS
HOW CAN YOU COMPARE HORIZONTAL, VERTICAL, AND CONGLOMERATE COMBINATIONS? In terms of what? Profitability? size?, market share? Plz be more specific, then do a little research/reading
asked by TAWNY 
Social Studies
What originally established how congressional representation is determined? a. the Constitution b. Supreme Court decision c. Declaration of Independence d. presidential executive disorder I think it's B...not sure, though. Please check the first article in
asked by Jessica 
histroy
complete a paper on Hinduism. The paper will allow you to focus on the religion’s cultural and societal influences and compare them to its origins. You are also asked to explain the Hindu desire for liberation from earthly existence. We don't write
asked by Trenet 
Biology
How does the structure of green cell organelles relate to the metabolic processes of photosynthesis and aerobic respiration? Many thanks for any help.
asked by Sam 
Biology
Could anyone suggest a web site where i could get the structual formulae and the equation for the hydrolosis of lactose thanks
asked by Bex 
math
i sorda know how to do this problem, but i am gonna ask anyway. ADDITIONAL INFO: consider a regular deck of cards without the jokers. Cards are replaced after each draw. Find the probability of each of the following. QUESTION: P(pair of red kings) wow
asked by Lindsey 
Social Studies
I have a question. Could you give me some similarites that a prime minister and a president share? For example, they both are heads of the executive branch of a country. That's all I've got. I'm supposed to do a Venn Diagram on them. I just need
asked by Claire 
Math
I need to know how to answer this. 78b where b=3 Please help. I have two different answers Substitute b and solve: 78(3) 7+24 (8 x 3 = + 24) 31
asked by Jim 
juvenile class
which one would be more consider important to sentence a juvenile age criminal history offense committed why do you guys think that of your answer? I think your teacher wants YOUR thoughts on this. Please post them and someone will be glad to critique
asked by kln20 
language arts
why are there so many different types of words Words reflect ideas, or actions. There are a lot of choices for these. And many people see the same thing differently, so use different words to describe it. I'm not sure, but I think you might be asking why
asked by alec 
Systems Physiology 2
I was a little unclear on this, what are considered to be several factors that determine the limits of the thermal netural zone of a homeotherm organism? Also when discussing freezing tolerance or prevention, for example, with anitfreeze proteins and
asked by mike 
juvenile procedures
does anyone have suggestions.... What are some factors to be consider most important in the creation of juvenile sentencing law? This site gives an overview of Juvenile Law in TX. http://www.tjpc.state.tx.us/about_us/juv_justice_overview.htm This is an
asked by kln20 
science
i need awebsite for middle schoolers all about plant population density (overcrowded plants) Check out these sites. http://extension.oregonstate.edu/catalog/html/grow/grow/disease.html
asked by kyla 
English
“When my grandfather was in the hospital and was close to death, my parents did not take me to see him, as most parents with younger children would not. The reason behind this action is that they want the child to remember this person before they were
asked by Christopher 
cavtities
i have to get my cavity removed and i was wondering if you can tell what they do. Will the dentist give you me injection? Will it hurt? How long does it take? What do they do to fix the cavity. Also can you give me couple of websites where a practice exam
asked by david 
theology
human reason wedded to truth Is this a question? Are we supposed to somehow metaphysically know the question associated with this? Do you have any thinking on this matter? The "truth" is "human" and "reason" are very seldom associated much less "wedded".
asked by jerry 
Math
(6/7) * (1/2) = 3/7 Is this correct? correct thank you!
asked by M 
Genetics/biology
Can anyone comment as to wether this solution is correct for this question please !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic
asked by Freddo 
ETHICS
IDENTIFY THE POLITICAL, SOCIAL , ECONOMIC, RELIGIOUS AND FAMILIAL CONVENTIONS WITH THE MEXICAN AMERICAN PUERTO RICANS SALVADORAN AMERICAN CUBAN AMERICANS. Lixa we do not do homework for you... but we will be more than happy to give you ideas or to review
asked by LIXA 
science
find the PH of a .00580 M solution of the strong base KOH. is it log(.00580)=2.24
asked by chris