Is this textbook example incorrect?

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SUMMARY

The discussion centers on a homework problem involving a calculation that yields a density of 4.5*10^22 /m^3, which the user converts to 4.5*10^16 /cm^3. The user initially suspects an error in the textbook's intermediate steps but later realizes a mistake in their own calculation using a handheld calculator. The final correct calculation involves the formula (8*3.14*((2*9.11*10^31)^1.5)/(3*(6.625*10^-34)^3))*(1.6*10^-19)^1.5, which results in a significantly larger number due to a previously overlooked negative sign in the exponent.

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kl055
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Homework Statement



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Homework Equations



I got 4.5*10^22 /m^3 using the exact numbers that they used...

which gives 4.5*10^16 /cm^3Is there some intermediate step which was not shown? ie. the numerical answer given by the equation is in some other unit which was converted to /m^3?

The Attempt at a Solution

 
Last edited:
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wait, I think I made a mistake on my handheld calc

I used this intead and got
https://defuse.ca/big-number-calculator.htm
(8*3.14*((2*9.11*10^31)^1.5)/(3*(6.625*10^-34)^3))*(1.6*10^-19)^1.5
=4.5 325 569 071 841 6e+ 120
 
Last edited:
nevermind, mr Donald neaman forgot a negative sign in front of the ^31...
 

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