- #1
jinx007
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The density of the material of a rectangular block is determined by measuring the mass and
linear dimensions of the block. The table shows the results obtained, together with their
uncertainties.
mass = (25.0 ± 0.1)g
length = (5.00 ± 0.01) cm
breadth = (2.00 ± 0.01) cm
height = (1.00 ± 0.01) cm
The density is calculated to be 2.50gcm–3
.
What is the uncertainty in this result?
A ± 0.01gcm–3
B ± 0.02 gcm–3
C ± 0.05 gcm–3
D ± 0.13gcm–3
According to the book the answer is C and i am having D as answer..
my work
(o.01) x 3 = 0.3
0.3 + 0.01 = 0.13
i cannot figure out where is the mistake help
linear dimensions of the block. The table shows the results obtained, together with their
uncertainties.
mass = (25.0 ± 0.1)g
length = (5.00 ± 0.01) cm
breadth = (2.00 ± 0.01) cm
height = (1.00 ± 0.01) cm
The density is calculated to be 2.50gcm–3
.
What is the uncertainty in this result?
A ± 0.01gcm–3
B ± 0.02 gcm–3
C ± 0.05 gcm–3
D ± 0.13gcm–3
According to the book the answer is C and i am having D as answer..
my work
(o.01) x 3 = 0.3
0.3 + 0.01 = 0.13
i cannot figure out where is the mistake help