Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Y S
Using Purell Twice is Twice as Effective?
If I use Purell, it kills 99.99% of germs. What if I then use it a second time? Is there only 0.0004% left? Or the bacteria that survive the first killing also survive the second killing?
2 AnswersInfectious Diseases1 decade agoderive rotational inertia of a ring rotating around its central axis?
it's 1/2mr^2
please derive it by calculus
thanks
3 AnswersPhysics1 decade agoPhysics Q on Pulleys?
If i have two weights (equal mass) connected by a frictionless pulley, suspended evenly, both at a vertical height l from the top of the pulley, and i put a little of the mass from one into the other, will the other one the first one hit the top of the pulley and why? thanks.
1 AnswerPhysics1 decade agoSolving .5(400)x^2+10x-20?
solve in quadratic formula HELP FAST
I need step by step. I keep getting a negative in the radical?
THanks
x = 1/40 (sqrt(161)-1) ~ 0.292214
x = 1/40 (-1-sqrt(161)) ~ -0.342214
1 AnswerMathematics1 decade agoerror in side of square?
Hi. Side of square = s+/-e
what is error in area of square?
is it 2e?
2 AnswersMathematics1 decade agoAnabolism takes in heat, so external environment has less heat, meaning more order outside and inside?
Doesn't this contradict the 2nd law of thermodynamics?
1 AnswerBiology1 decade agoIs Fe(II) the same as Fe+2?
1 AnswerChemistry1 decade agoQuick: Experts only: I'm multiplying a 298 bp dsDNA by PCR. How long should the temperatures be held, and many?
How long should the temperatures be held, and how many cycles?
1 AnswerBiology1 decade agoshould i fix my 2005 toyota avalon with the free recall if it hasn't acted up yet?
Any chance that the recall fix will cause the problem to come out?
12 AnswersToyota1 decade agowhat is an aryl bromide?
2 AnswersChemistry1 decade agoWhich Netbook to buy: Asus 1005pe or samsung n120?
Compare...which to get?
any other suggestions for great netbooks?
2 AnswersLaptops & Notebooks1 decade agoWhat percentage of Tropicana Healthy Heart Orange Juice is fish / fish extracts?
Please give a source...thanks
1 AnswerDiet & Fitness1 decade agochem questions: solubility?
1. why is hexane less polar than water, they both have h-bonding, don't they?
2. why does benzophenone not dissolve in water? doesnt benzophenone have h-bonding?
1 AnswerChemistry1 decade agoLewis dot diagram of CH2: specifics, advanced.?
Why is the Lewis dot diagram of CH2 given with a nonbonding pair of electrons on the carbon rather than two bonding electrons (single electrons) on the carbon?
H
|
C:
|
H
instead of
H
|
·C·
|
H
5 AnswersChemistry1 decade ago