Thursday
May 5, 2016

# Posts by MAG

Total # Posts: 34

physics
The half-life of Th(227) is 18.72 days. It decays by alfa emission to Ra(223), an alfa emitter whose half-life is 11.43 days. A particular sample contains 10^6 [10E(+6)] atoms of Th(227) and no Ra(223) at time t=0. a) How many atoms of each type will be in the sample at t=15 ...
November 6, 2014

Engineering
May 23, 2013

Physics
May 22, 2013

Physics
May 22, 2013

PHYSIC
THanks! The second for HW3_2B please?
May 9, 2013

Physic
May 9, 2013

Physics
Thanks, please answer ? a)Express b in term of, if necessary, R , L , C ?
May 1, 2013

physic
First par please and the others?
May 1, 2013

Physics
THanks guys, anybody managed other problem in 1 and 2?
April 30, 2013

Physics
Thanks FLu! Yes, Problem 1+2 please?
April 30, 2013

Physics
April 30, 2013

algebra
On a trivia game show, a contestent will answer 21 questions. A maximum of 200 points cana be earned. Some questions are worth 10 points and some are worth 8 points. Howmany of each point-value question must the contestent answer to earn the manimum number of points?
April 29, 2013

algebra
I need help with the linear equation: 10 - 0.5y = 1.5x and y = 0.5(6x + 40)
April 29, 2013

algebra
linear equations 10-0.5y+-1.5x and y=0.5(6x+40)
April 28, 2013

Physics
Have same problem like Flu. I=1*0.1*8=0.8 ((1.25663706*10^-6*0.8)/2*pi*8)*ln(1+(8/22)) This formula did not work, could somebody check it please? Thankyou
April 26, 2013

Physics
Thanks FLu, I got it now. Please someone for the other problems?
April 26, 2013

Physics
Me too please help! (a) Calculate the magnitude of the total current (in A) carried by the rotating sphere for the following values of ó, ù and R: sigma= 6x10−4C m−2, w= 5 rad⋅s−1 and R=1m b) Calculate the magnitude of the magnetic field B...
April 26, 2013

Physics
b) Calculate the magnitude of the magnetic field B(z) (in T) that is generated by the circular current of the rotating shell at a point P on the z-axis for the following values of ó, ù , z and R: sigma= 6x10−4C m−2, w= 5 rad⋅s−1, z= 1.92 m...
April 26, 2013

Physics
b) Calculate the magnitude of the magnetic field B(z) (in T) that is generated by the circular current of the rotating shell at a point P on the z-axis for the following values of ó, ù , z and R: sigma= 6x10−4C m−2, w= 5 rad⋅s−1, z= 1.6 m ...
April 26, 2013

Physics
(a) Calculate the magnitude of the total current (in A) carried by the rotating sphere for the following values of ó, ù and R: sigma= 6x10−4C m−2, w= 5 rad⋅s−1 and R=1m b) Calculate the magnitude of the magnetic field B(z) (in T) that is ...
April 26, 2013

Physics
a) Calculate the magnitude of the total current (in A) carried by the rotating sphere for the following values of ƒÐ, ƒÖ and R: ƒÐ= 6 ~10−4C m−2, ƒÖ= 7 rad⋅s−1 and R=1m (b) Calculate the magnitude of the ...
April 26, 2013

Physics
Yes, please explain the way guys!
April 26, 2013

Physics
Rotating blade (body force in axial loading) A blade is fixed to a rigid rotor of radius R spinning at omega rad/sec around the vertical z-axis (see figure). Neglect the effects of gravity. Calculate the peak stress in the blade: sigma_max_n Calculate the blade elongation: ...
April 23, 2013

physics
April 7, 2013

Physics
Please Problem 3 c) second part tesla in meters!?
April 5, 2013

accounting
An organization that does not require precise measurements of the use of services probably would allocate its service center costs by: A. using some form of the step method. B. applying the direct method. C. each revenue center's ability to absorb the cost. D. the actual ...
March 17, 2013

chemistry
where i=3 come from??
March 2, 2013

MATH
ONE CLASS HAS 9 FEWER BOYS THAN GIRLS.TOGETHER THERE ARE 33 STUDENTS. WHAT IS THE NUMBER OF BOYS IN THE CLASS? THE NUMBER OF GIRLS?
October 10, 2011

English
Thank you very much for your immediate response!
December 12, 2010

English
I needed to know if you could tell me if I have identified the proper tense and verb of my sentences? I am not asking for the answer, just if it is correct or incorrect. The verb is in quotations and tense form in parenthesis. Thank you very much your response is greatly ...
December 12, 2010

Microbiology
Good grief!! Is it necessary to be so rude and insulting of someone's intelligence? I'm aware that you obviously have a better education and/or understanding of this than I do. This is the first time I've used this Homework Help. Forgive me for not knowing that I ...
August 21, 2008

Microbiology
Before mutations can affect a population they must be: a) permanent b) beneficial c) inheritable d) all of the above
August 21, 2008

Microbiology
So would the answer be A,B,C, or D?
August 21, 2008

Microbiology
Before mutations can affect a population they must be: a) permanent b) beneficial c) inheritable d) all of the above
August 21, 2008

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