Sunday
December 21, 2014

Posts by anon


Total # Posts: 1,482

Physics
yes i did and i also said you need to use mu/4pi
April 26, 2013

Physics
(I*10^(-7))/(2*(z-R))
April 26, 2013

Physics
mu = 4pi * 10^(-7)
April 26, 2013

Physics
yes but you need mu/4pi
April 26, 2013

Physics
correct
April 26, 2013

Physics
you are missing the current I in b
April 26, 2013

Physics
yes it is good
April 26, 2013

Physics
You should be using mu/4pi for answer in b
April 26, 2013

chemistry
Quench the entire sample in water Quench half of the sample in water Cool the entire sample with air jets Cool half the sample with air Submerge the sample in a salt bath of Na2O Submerge the sample in a salt bath of CaO
April 26, 2013

Chemistry
Calculate the density of atoms on plane (001) in Lithium
April 26, 2013

chemistry
Am i the only one to make the obvious question here? If we knew how we got the answer, we could spot a mistake that might have been overlooked this entire time. How did we get the answer?
April 26, 2013

Physics :(( help please TT
Where is the picture?
April 23, 2013

physics
last option
April 19, 2013

First-Year Physics
Question: s22.postimg[dot]org/comasgagh/untitled.png From my calculations, option A is correct. What am I doing wrong? Also, I can't find a relationship between amplitude and energy. Attempt: s9.postimg[dot]org/8shnsrjbj/daum_equation_1366155192269.png
April 16, 2013

social studies?
Before the invention of the cotton gin, how were seeds removed from cotton fiber?
April 16, 2013

Quantum Physics
Please Q 7 and 8!
April 16, 2013

Quantum Physics
WORKING ON IT AR . DISTRACTED BY SOME PERSONAL PROBLEMS IN LIFE ... NOT ABLE TO CONCENTRATE
April 16, 2013

Quantum Physics
the above answers to 5th question is of assignment 6 problem 5 dont get misguided
April 16, 2013

Quantum Physics
problem 5,7 please.
April 16, 2013

Quantum Physics
I meant answer to question 1 is part c. -z-h- -x-h-
April 16, 2013

Quantum Physics
3B is Z
April 16, 2013

Quantum Physics
1st is part c): -z-h- -x-h-
April 16, 2013

algebra
in the past professional baseball was played at the astrodome in Houston, Texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t + 45t + 1. will a baseball ...
April 11, 2013

History
What are some of the toughest hardships that emigrants faced along the oregon trail?
April 9, 2013

History
Why did people move west in the 1800s?
April 9, 2013

algebra
solve for x: x-18 =64
April 8, 2013

Years ?
"In the early 1930s" what years are those like 1900-1930 right?
April 8, 2013

Reading/Maps
This is what I have to do "Draw a map of mainland U.S.A. and show (draw)how the mississippi river divides the country (part of the labeling) and label both sides correctly." I was wondering if you can find me a map that way I can start it off like how exactly do I do...
April 8, 2013

Science
what should you consider when you plan a title for a graph?
April 7, 2013

um math
what does a circle graph show that a bar graph does not?
April 7, 2013

science asap
Air pressure decreases as altitude increases ^ which one goes on the horizontal axis and which one goes vertical axis? how did you choose this scale? (This is for a line graph)
April 7, 2013

writing
how can i reword this differently Free will is God’s indispensable gift to humanity, and we must allow ourselves to be open to salvation in light of the choices we make.
April 6, 2013

math
-5 and 5/2 are both correct answers
April 4, 2013

math
Katie, how is that relevant to the question? We're here to answer questions, not ask them.
April 3, 2013

geography
Ok thanks for the help :) the answer for the 2 was A, but I do see what you were saying about C. Since everyone is the same age that would allow more cultural similarities, but I guess us being in a jungle would be more about being stranded than actually living in a jungle. I ...
April 2, 2013

geography
Should it be B and A? I was kind of unsure of 1 because A seemed too obvious.
April 2, 2013

geography
Check my answers, please? I put an asterisk next to which ever ones are my answer. Thanks! Why do you think the Inuit have retained aspects of their early culture? *A.because they are used to that lifestyle B.because such adaptations allow them to survive in their environment ...
April 2, 2013

Algebra 8th grade
3a + 5b = 70 6a + 9b = 135
April 1, 2013

Chemistry
Nvm it was -1.02*10^3 KJ
April 1, 2013

Chemistry
Calculate the standard free-energy change for the following reaction at 25 C degrees. 2Au^3+(aq)+3Ni(s) <-- --> 2Au(s)+3Ni^2+(aq) Ni2+(aq) + 2e- -> Ni(s) E=-0.26 Au3+(aq) + 3e- -> Au(s) E=+1.498 G= ? KJ Would it be G=1.758? •Chemistry - DrBob222, Sunday, March...
April 1, 2013

Chemistry
A galvanic (voltaic) cell consists of an electrode composed of magnesium in a 1.0 M magnesium ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 dC.
April 1, 2013

Chemistry
It is still wrong.
March 31, 2013

Chemistry
I got -1.02*10^6 but it is wrong.
March 31, 2013

Chemistry
Calculate the standard free-energy change for the following reaction at 25 C degrees. 2Au^3+(aq)+3Ni(s) <-- --> 2Au(s)+3Ni^2+(aq) Ni2+(aq) + 2e¨C ¡ú Ni(s) E=¨C0.26 Au3+(aq) + 3e¨C ¡ú Au(s) E=+1.498 G= ? KJ Would it be G=1.758?
March 31, 2013

Chemistry
So would it be X^2+ and Y^2+?
March 31, 2013

Chemistry
X^2+ + 2e- -> X(s) E=1.73V Y^2+ + 2e- -> Y(s) E=0.40v Which pair of species would react under standard conditions? X^2+ and Y^2+ X and Y^2+ X and Y X^2+ and Y Would it be X and Y because the E is positive?
March 31, 2013

Chemistry
Calculate the cell potential for the following reaction as written at 59 ¡ãC, given that [Cr2+] = 0.763 M and [Sn2+] = 0.0170 M. Standard reduction potentials: Sn2+(aq) + 2e¨C ¡ú Sn(s) E=¨C0.14 Cr2+(aq) + 2e¨C ¡ú Cr(s) E=¨...
March 29, 2013

Chemistry
Which of the following reagents would oxidize Cr to Cr2 , but not Fe to Fe3 ? Ca Co Ca2+ Br2 Co2+ Br- Which of the following reagents would oxidize Cu to Cu2 , but not Cl– to Cl2? Br2 Ca Co2+ Co Br- Ca2+
March 29, 2013

Chemistry
A current of 5.61 A is pass through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 9.00 g of nickel?
March 29, 2013

Chemistry
A current of 4.60 A is passed through a Pb(NO3)2 solution for 1.20 hours. How much lead is plated out of the solution?
March 29, 2013

chemistry
a) deprotonation of the alcohol
March 29, 2013

algebra 10th grade
Checking algebra answers, Is it correct 320km/1hr ↓ 320km /1hr →1m/1.609km =320m/1.609hr÷=199.3mph Answer: Round to nearest 10th =198.9mph
March 28, 2013

Physics
A 85-kg snow skier is being pulled up a 17 ° slope by a steel (Young's modulus 2.0 x 1011 N/m2) cable. The cable has a cross-section area of 7.4 x 10-5 m2. The cable applies a force to the skier, and, in doing so, the cable stretches by 2.6 x 10-4 m. A frictional ...
March 27, 2013

Pre calculus
How do I solve this exponent problem? I understand the exponent rules, but I getting 1 but 1 is not the answer! I don't want anyone to solve the problem for me, I want to learn how to solve this type of problem. Thank you! Solve the equation: -8=-3-6 (3sqrtx^2) Thanks again!
March 27, 2013

maths
This is a question from Brilliant dot org.
March 26, 2013

Science
Are compounds chemical or physical changes of matter?
March 22, 2013

Science 8th grade
what gets hot and cold faster, solid or gas and why?
March 22, 2013

Quantum Physics
Please help for Q9!
March 20, 2013

Biology
To take the energy from an exergonic reaction and use it to power an endergonic reaction, a cell can: create the energy for the endergonic reaction to occur. Why is this false? I thought a exergonic reaction create energy for the endergonic reaction to occur?
March 18, 2013

Chemistry
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by selective ...
March 17, 2013

Chemsitry
The Ksp of PbBr2 is 6.60× 10^–6. What is the molar solubility of PbBr2 in pure water? What is the molar solubility of PbBr2 in 0.500 M KBr solution? What is the molar solubility of PbBr2 in a 0.500 M Pb(NO3)2 solution?
March 17, 2013

Chemistry
At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.49. What is the Ksp of the salt at 22 °C? Is the ksp=1.38*10^-11?
March 17, 2013

Chemistry
My calculator only show up to the 1.0*10^-9 not 1.46*10^-9. Thanks
March 17, 2013

Chemistry
The answer is wrong. ksp is not 1.00*10^-9
March 17, 2013

Chemistry
Is the answer 1.50*10^-14?
March 17, 2013

Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.20 × 10-3 M Ag ? The Ksp of Ag2SO3=1.50×10^–14 Is the concentration of SO32- = 4.69*10^-12?
March 17, 2013

Chemistry
At 25 °C only 0.0610 mol of the generic salt AB2 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C? AB2(s) <- -> A^2+(aq)+2B^-(aq) Is the answer ksp=9.08*10^-4?
March 17, 2013

Chemistry
At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.49. What is the Ksp of the salt at 22 °C?
March 16, 2013

Chemistry
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by selective precipitation?
March 16, 2013

Chemistry
The Ksp of magnesium hydroxide, Mg(OH)2, is 5.61 × 10^-12. Calculate the molar solubility of this compound. Is the answer 1.1*10^-4 M?
March 16, 2013

English
It is wrong. COMPOSED
March 15, 2013

English
By the time he was twelve years old, Mozart had compose an entire opera. Is this correct?
March 15, 2013

Chemistry
Which of the following will be more soluble in an acidic solution than in pure water? Be(OH)2 Ag2SO4 RbClO4 CuCN Cul
March 14, 2013

Chemistry
A solution is 5.0× 10–5 M in each of these ions: Ag , SO42–, Cl–, CO32– Which precipitate will form? Ag2SO4 (Ksp = 1.12× 10–5) AgCl (Ksp = 1.77× 10–10) Ag2CO3 (Ksp = 8.46× 10–12)
March 14, 2013

Chemistry
What concentration of SO32– is in equilibrium with Ag2SO3(s) and 3.20 × 10-3 M Ag ? The Ksp of Ag2SO3=1.50×10^–14 The ksp expression is 1.50×10^-14=(Ag^+2)^2(SO3^-2)/(Ag2SO3). Is the concentration 3.0×10^-9?
March 14, 2013

Chemistry
H3BO3 -> H+ + H2BO3- Why doesn't H3BO3 break down to something with H3O+ because it is a weak acid? I know many weak acids break down to something with H3O+ like HCN, C6H5COOH, HNO2, and HF.
March 12, 2013

math
Tara filled 1/6 of her garden with tomato plants. Dan filled 1/6 of his garden with cucumber plants. How much did they fill in total?
March 12, 2013

SCIENCE
Above can hardly talk about cheating, in order for you to have found this page you had to search the question, thus you were trying to cheat also. Before you start pointing fingers, make sure your hands are clean.
March 12, 2013

English
A worker can hear neighbors tapping on computer keyboards, making telephone calls, and muttering under their breath. Is this right or wrong?
March 11, 2013

Algebra
Thank you to the both of you. I understand now I was getting mixed up. :)
March 5, 2013

Algebra
Can you please solve this I don't understand I know the answer is b>3 but If you can break it down for me and show work? (: 3b+12>27-2b
March 5, 2013

Science
How does the temperature change in the sun's atmosphere differ from the temperature change in the sun's interior?
March 4, 2013

Math 7th grade
Katya bought 2 gallons of juice. she drank 2 quarts. how much was left?
March 3, 2013

Algebra/Math
Can you show work por favor? :) A metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should be combined to create 80 kg of a 53% copper alloy?
February 27, 2013

Spanish
What's the date of your birthday? B. It's the first of Dec. How old is your mom? A. She's 36.
February 27, 2013

Chemistry
calculate the energy in joules lost when 70.0 grams of water cools from 86.4 celsius to 7.1 celsius
February 26, 2013

Chemistry
you have 20% sucrose solution. you need to mke 100ml of 15% sucrose solution. which is the correct dilution? A. 85ml of 20% sucrose and 15ml of h2o B. 25ml of 20% sucrose and 75ml of h2o C. 75ml of 20% sucrose and 25ml of h2o D. 15ml of 20% sucrose and 85ml of h2o
February 25, 2013

Chemistry
It said it is still wrong. It said Which of the two strong bases will produce more OH ions per formula unit?
February 20, 2013

NEED HELP ASAP
So it would be KOH>Ca(OH)2>NH3>HBrO>HBr?
February 20, 2013

NEED HELP ASAP
The answer you put is wrong.
February 20, 2013

Chemistry
Rank these to highest pH to lowest pH: NH3, KOH, Ca(OH)2, HBr, HBrO I put these in the same order for highest pH to lowest but still get it wrong.
February 20, 2013

chemisty
The density is the mass/volume. You will have to calculate the volume of the block. The volume of a block is the height x width x length. However, before multiplying, be sure to convert the dimensions so they are the same units. For example, convert them to cm.
February 20, 2013

CALCULUS
The derivative of e^x is e^x. To determine the derivative apply the constant multiple rule
February 20, 2013

Earth Science
Which geologic principle states that if rock strata are found folded or faulted, the folding or faulting occurred after they were deposited? faunal succession uniformitarianism original horizontality cross-cutting relationships Uniformitarianism does not sound right at all for...
February 20, 2013

Algebra
-2x-y=-1 how do you put this in slope-intercept form y=mx=b ?
February 19, 2013

Math
A bag contains 10 yellow, 15 blue and 5 red Marbles. Mark chooses a candy and doesn't replace it in the bag. Find P (neither blue)
February 14, 2013

Math
A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done?
February 12, 2013

Physics
A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done?
February 12, 2013

math
In the U.S., 4634 million pounds of apples were consumed in 2002. The population of the U.S. in that year was 290 million. 1. a medium apple weighs about 5 ounces. estimate how many apples a family of four would have consumed in one month.
February 9, 2013

Chemistry
Kc=0.0406
February 5, 2013

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members