Physics  correction  significant digits
posted by Anonymous .
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
=

2 e,f n are wrong
3. the answers shown are correct, but several are blank. 
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

no because i would not quit
Respond to this Question
Similar Questions

Chemistry
please check my answers for the following questions. 1) when a measurement that has six significant digits is divided by a measurement that has three significant digits, how many significant digits should the answer have? 
Significant Digits
(2.7 x 10^2) x (4.23 x 10^2) PLEASE YOU SIGNIFICANT DIGITS!!! thx 
Math
Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. WHich two masses produce this answer? 
Physics
Calculate the answer for the following question and state the answer with the correct certainty and units. Given the values of b and h, find A. b=3.2 cm, h=10.1 cm A=1/2bh The answer is 16 cm^2, which was rounded to two significant … 
chemistry
this is over significant digits. Indicate how many significant figures are in each of the following measurements: e) 4.0 X 105 kg i got 1 significant digit, but i'm not sure it if it's right... (& i can't ask my teacher, the situation … 
physics
A hole in an aluminum plate has a diameter of 1.465 cm at 22.80° C. (a) What is the diameter of the hole at 199.0° C (to four significant digits)? 
Physics  bobpursely
State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 
Physics
Talking about significant figures, my Physics textbook lists 5 rules for determining significant figures. 1) All nonzero digits are significant. 2) Zeros to the right of nonzero digits in a number containing a decimal point are significant. … 
math (significant digits)
(3.x10^2) + (0.2) round to significant digits required 
physics
round of the following digits 3.65*105(upto are place of decimal) 0.882026(upto three significant figures) 311.299(upto four significant figures) 4.783(upto two significant figures)