6.59x10^-22 / 1.38x10^-23 = 47.75??

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qdphung said:
I get 4.775x10^-45 when I try.
Click to expand...

I think you are evaluating (6.59x10^-22 / 1.38) x 10^-23 rather than (6.59x10^-22) / (1.38x10^-23) as required.

How are you doing the evaluation? I did it using the EE or Exp button on my calculator, which enters scientific notation directly (as a single number). If you enter it as written (multiplication by a power), you need the parentheses to force it to treat the denominator as a whole.

Note that the notation you wrote is a technical violation of the order of operations, because it can be inferred that the denominator is (1.38x10^-23), though no parentheses are used as properly required.
 
mmm4444bot said:
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That was the example/problem
 
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Dr.Peterson said:
I think you are evaluating (6.59x10^-22 / 1.38) x 10^-23 rather than (6.59x10^-22) / (1.38x10^-23) as required.

How are you doing the evaluation? I did it using the EE or Exp button on my calculator, which enters scientific notation directly (as a single number). If you enter it as written (multiplication by a power), you need the parentheses to force it to treat the denominator as a whole.

Note that the notation you wrote is a technical violation of the order of operations, because it can be inferred that the denominator is (1.38x10^-23), though no parentheses are used as properly required.
Click to expand...

Thanks, I'll try it with parentheses.
 
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