Consider a brass cylinder used as a hinge in a door. The hinge is 10 cm tall with a diameter of 2 cm. If the density of brass is reported to be 8.5 grams/cubic centimeter, what is the mass of the cylinder? 74 g 267 g 1068 g 4 g
Answers
Answered by
32
Answer:
8890
kg/m
3
Explanation:
Begin the dimensional analysis by writing the given as a fraction:
8.89
g
cm
3
Multiply by the conversion factor from grams to kilograms:
8.89
g
cm
3
1
kg
1000
g
Multiply by the conversion factor from cubic centimeters to cubic meters:
8.89
g
cm
3
1
kg
1000
g
(
100
cm
)
3
(
1
m
)
3
Make sure that all of the units cancel, except
kg/m
3
:
8.89
g
cm
3
1
kg
1000
g
(
100
cm
)
3
(
1
m
)
3
=
8890
kg/m
3
Answered by
2
Answer:
267g
Explanation:
height: 10cm,d=2cm, density of brass=8.5g/cm^3
Volume of cylinder=πr^2h
density=p=m/v-------m-mass, v-volume
V=3.14x(1)^2x10=31.4cm^3
p=m/v
8.5=m/31.4cm^3
8.5x31.4=266.9g=267g=mass
mass=267g
Hope you will find this helpful
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