# 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 ...

**Engineering**

Please help!

**Physics**

Is I = radius(a)/distance(d)?

**Physics**

VAlue of I please

**PHYSIC**

THanks! The second for HW3_2B please?

**Physic**

Please help!

**Physics**

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

**physic**

First par please and the others?

**Physics**

THanks guys, anybody managed other problem in 1 and 2?

**Physics**

Thanks FLu! Yes, Problem 1+2 please?

**Physics**

Please help!

**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?

**algebra**

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

**algebra**

linear equations 10-0.5y+-1.5x and y=0.5(6x+40)

**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

**Physics**

Thanks FLu, I got it now. Please someone for the other problems?

**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...

**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...

**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 ...

**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 ...

**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 ...

**Physics**

Yes, please explain the way guys!

**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: ...

**physics**

Please answer second part tesla in meters problem 3) c) !

**Physics**

Please Problem 3 c) second part tesla in meters!?

**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 ...

**chemistry**

where i=3 come from??

**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?

**English**

Thank you very much for your immediate response!

**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 ...

**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 ...

**Microbiology**

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

**Microbiology**

So would the answer be A,B,C, or D?

**Microbiology**

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

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