Please find attached questions. Thank you. A table tennis ball weighting 2.45 x 10-2 N with diameter (D) 38mm is dropped freely. Assume thesurface of table tennis ball is smooth.Given that:Density of air = 1.2 kg/m³Dynamic viscosity (μ) = 1.81 x 10-5 kg/m-sa) Draw the free body diagram of the table tennis ball to the relationship between buoyantforce, drag force and the weight of the ball.b) Determine the velocity of the ball in terms of drag coefficient (CD).c) Determine the velocity and drag coefficient using Figure provided.4002001006040A2010Ср6424CD=ReSmooth cylinderD210.60.4Smooth sphere0.20.10.0610°101102103104105106107PUDRe =μFigure: Relationship of drag coefficient and Reynolds number for a smooth cylinder and sphere

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Answered: A table tennis ball weighting 2.45 x…

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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On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11,000 ft) powered by 600 toy balloons filled with helium. Each filled balloon had a radius of about 0.47 m and an estimated mass of 0.32 kg. (a) Estimate the total buoyant force on the 600 balloons. (Enter your answer to at least two decimal places.) kN(b) Estimate the net upward force on all 600 balloons. kN(c) Ashpole parachuted to Earth after the balloons began to burst at the high altitude and the system lost buoyancy. Why did the balloons burst? Atmospheric pressure at this high or low altitude is much lower or higher than at the Earth's surface.
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A solid sphere having diameter 5 mm is falling through oil of density 800 kg/m? and dynamic viscosity 0.8 kg/m-s at a constant velocity of 1 cm/s. Drag force on the sphere
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A cube of lead with a side dimension of 5.0 cm is slowly lowered into the beaker of oil by a thin string attached to a spring scale at a constant rate, as shown in the figure. The density of lead is 11,300 kg/m³. oil density: 960 kg/m3 1 2 3 0.0010 m³ beaker i. What will be the spring scale reading in newtons when the lead has been submerged to location 2? ii. Does the spring scale reading increase, decrease, or stay the same when the cube is lowered from location 2 to location 3? Justify your answer by referencing the pressure of the fluid on the lead cube. iii. The lead cube is lowered from above the oil's surface (location 1) to a spot just below the surface (location 2) until the cube is just above the bottom of the beaker (location 3). Describe any changes in pressure on the bottom of the beaker during this process. Explain your answer.
A helium balloon is inflated to 1.08 bars (gauge) and released. It has a diameter of 0.3 m and can be assumed to be a smooth sphere. The mass of the latex balloon material is 3 g. The surrounding air is at 20°C. (a) Considering that the helium is pressurized, what is the density of the helium? (b) What is the total weight of the balloon including the helium and latex? (c) What is the magnitude of the buoyancy force? (d) What is the fastest upward velocity of the balloon? Don't account for elevation affecting the surrounding air properties.
1. The Stokes-Oseen formula for drag force Fon a sphere of diameter D in a fluid stream of low velocity V, density p, and viscosity u is: 9T F = 3TuDV + 16PD? Is this formula dimensionally homogenous? 2. The efficiency n of a pump is defined as the (dimensionless) ratio of the power required to drive a pump: QAp input power Where Q is the volume rate of flow and Ap is the pressure rise produced by the pump. Suppose that a certain pump develops a pressure of Ibf/in? (1ft = 12 in) when its flow rate is 40 L/s (1L =0.001 m). If the input power is 16hp (1hp = 760 W), what is the efficiency?
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