Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Transcribed Image Text:In the given image, both fluids are at
20°C. The specific weight of water is
9790 N/m³. If surface tension effects
are negligible and a = 8.35 cm, what
is the density of the oil, in kg/m³?
Oil
6 cm
Water
Numeric Response
CO
10 cm
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- You drive on 15 to the Bay Area. Midway through the trip your car indicates that the tire pressure is low. The pressure is supposed to be 330 kPa (absolute) but you measure it to be 290 kPa. Due to driving, the temperature of the air in the tires when they are filled is 50 °C. You add air to the desired pressure value for your tires and keep driving. The next morning, the air in the tires has equilibrated to San Francisco morning temperatures of 10 °C, and your car still says the tire pressure is low. Assume the tire volume to be fixed. Take C₂ = 1.005 kJ/kg-K and C₂ = 0.718 kJ/kg-K, T = 132 K, and Pc = 3.77 MPa. (a) In words, describe why the tire pressure is low the next morning, even though you filled up the tires midway through your trip. (b) (c) (d) (e) Sketch a T - v diagram of the process. Determine whether the ideal gas law is appropriate to employ for further analysis in this situation. Your argument should involve numbers. Calculate the pressure of the tires the next morning…arrow_forwardA tank is 6 m long, 4 m wide, 5 m high, and contains kerosene with density 820 kg/m³ to a depth of 4.5 m. (Use 9.8 m/s² for the acceleration due to gravity.) (a) Find the hydrostatic pressure (in Pa) on the bottom of the tank. 36162 Pa (b) Find the hydrostatic force (in N) on the bottom of the tank. 867888 N (c) Find the hydrostatic force (in N) on one end of the tank. Narrow_forwardThe tank contains water and immiscible oil with S=0.90. What is h in cm? 6 cm 12 cm Oil Water 8 cmarrow_forward
- A flat-bottomed raft is traveling across a shallow lake at 6 ms-¹. The lake is 10 cm deep. If the raft has a surface area of 3 m² and the lake is full of water with viscosity of 0.001 Pa s, determine the force required to maintain the raft's speed. [0.18 N]arrow_forwardFor the manometer shown in the image, all fluids are at 20°C. If PB- PA = 90 kPa, determine the height H in centimeters. The specific weight of water is 9790 N/m³ and the specific weight of mercury is 133100 N/m³. Meriam red oil, SG = 0.827 Water 18 cm H 35 cm Numeric Response B Mercuryarrow_forwardGlobal warming will produce rising sea levels partly due to melting ice caps and partly due to the expansion of water as average ocean temperatures rise. To get some idea of the size of this effect, calculate the change in length, Ah (in mm), of a column of water 1.5 km high for a temperature increase of 1.2 °C.Assume the column is not free to expand sideways. As a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to the surface can expand sideways onto land, and only to a limited degree. As another approximation, neglect the fact that ocean warming is not uniform with depth. Properties of water: 3 = 210 x 10 /C. c= 4186 J/kg - °C, L; = 334 kJ/kg, Le = 2256 kJ/kg Enter you answer below (to the nearest mm): Ah (in mm) = Type your answer.arrow_forward
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