Area multiplied by height gives pressure. Select one: O True O False A body floating freely in still water experiences a downward force acting on it due to gravity. Select one: O True O False If you want to know the buoyant force on an object, you only need to detemine the weight of the fluid displaced by the object. Select one: O True O False The Buoyant force increases as an object is brought to deeper and deeper depths in fluid. Select one: O True O False The buoyancy force is caused by the pressure exerted by the fluid in vwhich an object is immersed. Select one: O True O False

Area multiplied by height gives pressure. Select one: O True O False A body floating freely in still water experiences a downward force acting on it due to gravity. Select one: O True O False If you want to know the buoyant force on an object, you only need to detemine the weight of the fluid displaced by the object. Select one: O True O False The Buoyant force increases as an object is brought to deeper and deeper depths in fluid. Select one: O True O False The buoyancy force is caused by the pressure exerted by the fluid in vwhich an object is immersed. Select one: O True O False

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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Buoyance is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. The upward buoyant force is calculated via the following equation: Fp = PfgV V is the volume of displaced fluid (object), pf is the density of the fluid, and F, is the buoyant force. 1) Calculate the buoyant force on 10 tons of solid steel completely submerged in water and compare this with the steel's weight with the density of 7800 kg/m³. (b) What is the maximum buoyant force that water could exert on this same steel if it were shaped into a boat that could displace 12m3 of water?
The volume in buoyancy formula is the volume of the entire object. Select one: True False Reynold's number identify the laminarity of the fluid. Select one: True False If the velocity in a given location is invariant with time the flow is said to be non-steady. Select one: True O False The viscosity of a fluid is a measure of its resistance to defeormation. Select one: True O False Flow rate is the amount of fluid passing through a section per unit of pressure. Select one: True O False
6. DETAILS A tennis ball has a volume of 141.00 cm³ and an average density of 275.00 What is the tennis ball's mass, in grams? g kg m³ O 73.37 N MY NOTES What amount of force would need to be applied to cause the tennis ball to be completely submerged in ethyl alcohol (Pethyl alcohol=806- the vertical direction (weight, buoyant force, and applied force). When writing the buoyant force, note that the ball will be fully submerged. What does this do to V?) 1.11 N 0.73 N 0.38 N 38.00 N 7337.36 N ASK YOUR TEACHER kg -)? (HINT: Set up a FBD and look at all the forces acting in
Q1: Apply appropriate solution method using math principles to prove that "the pressure at a point in a fluid has the same magnitude in all directions". Support your answer with sketch. Answer: Px Pz = Pn P are the mean pressures at the three surfaces in the x- and z-directions. Q2: Formulate the issue and identify key variables to prove that [AP = P2 - P, = pg Az = y, Az], where y, and p are the specific weight and density of the fluid, respectively. Az is the vertical distance. Support your answer with sketch. Q3: From fluid mechanics science perspective, define the center of gravity and the center of pressure. Q4: Identify the hydrostatic force acting on the top surface of a submerged rectangular plate by applying principles of engineering for the following cases: 1 tilted plate, (2 vertical plate, and 3 horizontal plate. Support your answer with sketch. Q5: By applying principles of fluid mechanics science, define the "rigid-body" and identify its features. Q6: Formulate the issue…
A barge pulled by a tugboat can be described as a rect- angular box that is open on the top. A certain barge is 30.2 feet wide and 12.50 feet high, with the base of each side being 116 feet long. If the barge itself weighs 6.58 x 10 pounds, what will be the draft (depth in the water) if the cargo weighs 1.12 × 10°pounds in (a) sea- water with a density of 1.025 g/mL and (b) freshwater with a density of 0.997 g/mL?
* lin. E: Instagram A docs.google.com A رفع هوية الطالب او اي هوية تعريفية * The container of fig. bellow holds water and air as shown,what is the pressure at A,B,C,D ?in pounds per square foot and pascal EWater Fig. 2.39 إضافة ملف سيتم إرسال نسخ من ردودك عبر البريد الإلكتروني إلى العنوان الذي قدمته صفحة 1 من 1 إرسال
A block of metal measures 12 cm by 10 cm by 10 cm. When the block is hung from a spring scale, as shown in Figure 3a, the scale reads 30 kg. This is the "true mass" of the block. Suppose we attempt to measure the block's mass under water. The same mass, while hanging from the same scale, is completely submerged in water, as shown in Figure 3b. What is the reading (in kilograms) on the spring scale? Show and explain your work. Scale Figure 3a Figure 3b
3. A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? 4. A reservoir of glycerin has a mass of 1200 kg and a volume of 0.952 m³. Find the glycerin's weight (W), mass density (O), specific weight (8),and specific gravity (s.g.)
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An aquarium 7ft long, 3ft wide, and 5ft deep is full of water. The gravitational acceleration is g = 32ft/s². The density of water is p = 1.95slug/ft³. Answer the following questions. 1. Find the hydrostatic pressure on the bottom of the aquarium. Answer (in pounds per sq. foot): 2. Find the hydrostatic force on the bottom of the aquarium. Answer (in pounds): 3. Find the hydrostatic force on one end of the aquarium. Answer (in pounds): FI
In Figure below all fluids are at 20 deg.C. Determine pressure at point B, if pressure at point A is 150 kPa and weight of air is neglected. Use the table below for the densities at 20 deg.C. Liquid p. kg/m Kerosene - Ammonia 608 Benzene 881 Air Carbon tetrachloride 1590 Benzene Ethanol 789 Ethylene glycol Freon 12 B 1117 40 cm 9 cm 1327 20 cm Gasoline 680 14 cm Glycerin Kerosene 1260 t8 cm 804 Mercury- Water Mercury Methanol 13,550 791 SAE 10W oil 870 SAE 10W30 oil 876 SAE 30W oil 891 SAE 50W oil 902 Water 998 Seawater (30%e) 1025
An easy experiment to estimate the density of a body is to weigh it in air and water. Consider a body of unknown density and volume. You weighed it in air, finding a value of 100 N. Then, using a special scale imported from the United States, you weighed the object submerged in water, finding a value of 5.6 lbf. Based on these results, find the density and volume of the object. Remember that the scale measures the result of the balance of forces on the body (or the sum of the forces). Show this balance of forces (or force diagram) on the body during your solving. Express the result in units of the International System and the American System of Engineering, and show any unit conversion calculations using the conversion factor. Consider the densities of water and air equal to 1000 kg/m3 and 1.18 kg/m3, respectively.