Posted by **Anonymous** on Monday, February 4, 2008 at 11:37pm.

1) How many SD's?

a) 5.7 = 2 SD

b) 235.12 = 5 SD

c) 8.07 = 3 SD

d) 0.0032 = 2 SD

e) 0.0150 = 3 SD

f) 1.39x10^5 = 3 SD

g) 15.200 = 5SD

h) 1070 = 3 SD

2) Calculations - Please check the SDs

a) 15.3 + 25.03

= 40.33

= 40.3

b) 1200 + 63

= 1263

= 1300

c) 4.78 - 1.2

= 3.58

= 3.6

d) 243.1 + 15.2 + 3.75

= 262.05

= 262.1

e) 0.00170 + 0.02561

= 0.02731

= 0.0273

f) 4.0 - 3.99

= 0.01....

g) 2.7x82.7

= 223.29

= 220

h) 1074x3.21

= 3447.54

= 345

i) 0.022 x 9.7

= 0.2134

= 0.21

j) 0.0220 x 9.70

= 0.2134

= 0.213

k) 23.5/2.0

= 11.75

= 10

l) 0.1735/23

= 0.00754

= 0.0075

m) 18.2 x 27.9 x 1.3

= 660.114

= 660

n) 6.7x2.73/14.74

= 1.240

= 1.24

3) What units would result?

a) cm/s x s

= cm

b) m^2/s

=

c) m/s^2 x s

= m/s

d) m/s / s

=

e)g/cm^3

=

f) kg/m^2 / m

=

- Physics - correction - significant digits -
**bobpursley**, Tuesday, February 5, 2008 at 12:26am
2 e,f n are wrong

3. the answers shown are correct, but several are blank.

- Physics - correction - significant digits -
**drwls**, Tuesday, February 5, 2008 at 12:56am
The reason (e) is incorrect is that, even though 0.00170 has three sig. digits, this is an addition problem, so only five places to the right of the decimal are required to match the significance of the 0.02561

- football -
**troy**, Wednesday, June 8, 2011 at 8:42am
no because i would not quit

## Answer This Question

## Related Questions

- Physics - Talking about significant figures, my Physics textbook lists 5 rules ...
- Physics - Calculate the answer for the following question and state the answer ...
- Physics - bobpursely - State the number of significant figures. 1) 809 Answer : ...
- Math - Expressed to the correct number of significant figures, the sum of two ...
- Chemistry - please check my answers for the following questions. 1) when a ...
- math (significant digits) - (3.x10^-2) + (0.2) round to significant digits ...
- physics - A hole in an aluminum plate has a diameter of 1.465 cm at 22.80° C. (a...
- chemistry - this is over significant digits. -Indicate how many significant ...
- Significant Digits - (2.7 x 10^2) x (4.23 x 10^2) PLEASE YOU SIGNIFICANT DIGITS...
- physics - round of the following digits- 3.65*105(upto are place of decimal) 0....

More Related Questions