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Question 7 A solid steel sphere of radius 20 cm has a density of 2000 kg/m³. The sphere is then submerged in a fluid whose density is 1500 kg/m³. (a) What is the true weight of the sphere? (b) What is the buoyant force on the sphere? (c) What is the apparent weight of the sphere?

Question 7 A solid steel sphere of radius 20 cm has a density of 2000 kg/m³. The sphere is then submerged in a fluid whose density is 1500 kg/m³. (a) What is the true weight of the sphere? (b) What is the buoyant force on the sphere? (c) What is the apparent weight of the sphere?

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Question 7 A solid steel sphere of radius 20 cm has a density of 2000 kg/m³. The sphere is then submerged in a fluid whose density is 1500 kg/m³. (a) What is the true weight of the sphere? (b) What is the buoyant force on the sphere? (c) What is the apparent weight of the sphere? Question 8 A pipe whose initial diameter is 20 cm runs horizontally for 15 m. The fluid flows through this part of the pipe with a velocity of 12 m/s. Then, the pipe bends upwards and rises to the second floor which is 10 m above the ground floor. At this point the pipe then constricts to a radius of 5 cm and runs for a final 3 m horizontally. Calculate the difference in pressure between the initial part of the pipe and the final part of the pipe. ASsume the density of the water in the pipe is 1000 kg/m³.
Transcribed Image Text:Question 7 A solid steel sphere of radius 20 cm has a density of 2000 kg/m³. The sphere is then submerged in a fluid whose density is 1500 kg/m³. (a) What is the true weight of the sphere? (b) What is the buoyant force on the sphere? (c) What is the apparent weight of the sphere? Question 8 A pipe whose initial diameter is 20 cm runs horizontally for 15 m. The fluid flows through this part of the pipe with a velocity of 12 m/s. Then, the pipe bends upwards and rises to the second floor which is 10 m above the ground floor. At this point the pipe then constricts to a radius of 5 cm and runs for a final 3 m horizontally. Calculate the difference in pressure between the initial part of the pipe and the final part of the pipe. ASsume the density of the water in the pipe is 1000 kg/m³.
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