Question

3) If a hollow sphere has a volume of 49 m3 and the inner empty space has a volume of 25 m3,

A) What is the outer radius?

B) What is the inner radius?

C) What is the outer surface area?

D) What is the weight of the sphere if the density is 0.917 × 103 kg/m3

E) What is the sphere made of?

Answer #1

A hollow sphere of inner radius 5.1 cm and outer radius
7.0 cm floats half submerged in a liquid of density 640
kg/m3. What is the mass of the
sphere?
(in kg)
A: 4.60×10-1
B: 6.11×10-1
C: 8.13×10-1
D: 1.08
E: 1.44
calculate the density of the material of which
the sphere is made.
(in kg/m^3)
A: 5.22×102
B: 7.57×102
C: 1.10×103
D: 1.59×103
E: 2.31×103

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