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Anáiniras A ping pong ball can be suspended in a jet of air as shown in the figure. The ping pong ball has a mass of 2.7 g and a diameter of 44 cm. Assume that the air has a density of 1.225 kg/m and absolute viscosity of 1.78 x 105 Ns/m?. a) What air velocity is required to keep the ball suspended in the jet? Answer: Choose. b) if the ping pong ball still has a mass of 2.7 g and a diameter of 4.4 cm. Repeat the problem but now assume the ambient fluid is water at 20°C. What water velocity is needed to suspend the ping pong ball at the same position in the water? Answer: Choose.

Anáiniras A ping pong ball can be suspended in a jet of air as shown in the figure. The ping pong ball has a mass of 2.7 g and a diameter of 44 cm. Assume that the air has a density of 1.225 kg/m and absolute viscosity of 1.78 x 105 Ns/m?. a) What air velocity is required to keep the ball suspended in the jet? Answer: Choose. b) if the ping pong ball still has a mass of 2.7 g and a diameter of 4.4 cm. Repeat the problem but now assume the ambient fluid is water at 20°C. What water velocity is needed to suspend the ping pong ball at the same position in the water? Answer: Choose.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Ansiniins A ping pong ball can be suspended in a jet of air as shown in the figure. The ping pong ball has a mass of 2.7 g and a diameter of 4.4 cm. Assume that the air has a density of 1.225 kg/m and absolute viscosity of 1.78 x 105 Ns/m?. a) What air velocity is required to keep the ball suspended in the jet? Answer: Choose. b) If the ping pong ball still has a mass of 2.7 g and a diameter of 4.4 cm. Repeat the problem but now assume the ambient fluid is water at 20°C. What water velocity is needed to suspend the ping pong ball at the same position in the water? Answer: Choose.
Transcribed Image Text:Ansiniins A ping pong ball can be suspended in a jet of air as shown in the figure. The ping pong ball has a mass of 2.7 g and a diameter of 4.4 cm. Assume that the air has a density of 1.225 kg/m and absolute viscosity of 1.78 x 105 Ns/m?. a) What air velocity is required to keep the ball suspended in the jet? Answer: Choose. b) If the ping pong ball still has a mass of 2.7 g and a diameter of 4.4 cm. Repeat the problem but now assume the ambient fluid is water at 20°C. What water velocity is needed to suspend the ping pong ball at the same position in the water? Answer: Choose.
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