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January 26, 2015

January 26, 2015

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

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 12:26am2 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 12:56amThe 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 8:42amno because i would not quit

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