Asked by qay
A copper ball has a mass of 1kg.Calculate the radius of the ball,given that the density of copper is 8900kg m-3
Answers
Answered by
Jai
recall that the volume of a sphere (geometry of the ball) is given by
V = (4/3)πr^3
where
r = radius
π = 3.14 (constant)
thus to get radius, we need to first get the volume from the given mass and density.
recall that density is just mass per volume, or
d = m/V
substituting,
8900 = 1/V
V = 0.0001124 m^3
substituting these to volume of sphere,
0.0001124 = (4/3)πr^3
0.0001124 = (4/3)*(3.14)*r^3
r^3 = 0.0001124 / 4.187
r = cuberoot(0.00002684)
r = 0.02994 or approx 0.03 m
hope this helps~ :)
V = (4/3)πr^3
where
r = radius
π = 3.14 (constant)
thus to get radius, we need to first get the volume from the given mass and density.
recall that density is just mass per volume, or
d = m/V
substituting,
8900 = 1/V
V = 0.0001124 m^3
substituting these to volume of sphere,
0.0001124 = (4/3)πr^3
0.0001124 = (4/3)*(3.14)*r^3
r^3 = 0.0001124 / 4.187
r = cuberoot(0.00002684)
r = 0.02994 or approx 0.03 m
hope this helps~ :)
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.