Question

How many significant figures are in the following measurements ?

a. 300000000m/s
b. 3.00x10(8th power)
c.25.030*c
d. 0.006070 *c
e. 1.004 J
f. 1.30520 MHz

Answer 1

The number of significant figures are counted by,
non-zeros are significant
Zeros in between non-zeros are significant.
Zeros after the decimal and non zeros are significant.

a. 300000000m/s = 1 significant figure
b. 3.00x10(8th power) = 3 significant figures
c.25.030*c = 4 significant figures
d. 0.006070 *c = 5 significant figures
e. 1.004 J = 4 significant figures
f. 1.30520 MHz =5 significant figures

Answer 2

The number of significant figures are based on the rules:non-zeros are significant Zeros in between non-zeros are also significant. Trailing zeros are considered not significant. Zeros after the decimal and non zeros are significant.

a. 1
b. 3
c. 5
d. 4
e. 4
f. 6