0
There are eight.
For integers, you start at the first non-zero digit and count the number of digits to the last non-zero digit. However, this can lead to ambiguity. When given the number 5000, if you have no further information there is only ONE significant digit. However, if you know that the number is given to the nearest hundreds, it has TWO significant digits; if to the nearest ten it has THREE.
For numbers with an integer and fractional part, you count from the first non-zero digit to the last digit - even if the last digit is zero. Any trailing zero should signify the degree of rounding and so should only be present to indicate that the given number is accurate to that level of significance.
Therefore the number here lies in the range [50.0030095, 50.0030105), and all the digits from the first 5 to the last zero are significant : eight in all.
Even without the significance implied by the trailing zero, the number still has 7 significant digits: 50.00301. YOU simply CANNOT ignore the 0s on either side of the decimal point if there are non-zero digits further out.
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Ezra
BeauFive, I believe. Zeros on either side of the decimal point are ignored, as are any zeros on the left end. Here is a guide which might help you: http://www.usca.edu/chemistry/genchem/sigfig.htm
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How many Nm equals 1 daNm?
1 daNm = 10 Nm
How many nm in a millimeter?
One million nanometer.
How many nm are in 0.0000521 hm?
The prefix h- is for hecto- meaning 102. The prefix n- is for nano- meaning 10-9:(0.0000521 hm)* (102 m / hm) / (10-9 m / nm) = 0.0000521 x 1011 nm =5.21 x 106 nm or 5,210,000 nm
How many km is 170 nm?
1 nautical mile = 1.85318054 kilometre 170 nm = 315 .041 km (rounded)
How many nanometers is 183 cm?
A nm (nanometer) = 10-9 m 1 cm = 10-2 m Thus 1 nm = 10-7 cm or 1 cm = 107 nm So 183 cm = 1.83 109 nm
