Solution 1
Density of copper = d = 8940kg/m3
Volume of sphere = (4/3) πr3
r = 5cm = 0.05m
Volume V = (4/3) π (0.05)3
We know that, mass = volume x density
m = 5.236 x 10-4 x 8940
So, mass m = 4.681 kg
hence, option d is correct.
i have solved only one question as HOMEWORKLIB guideline for multiple questions. Please post other question separately.
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