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A float in an ocean harbor is made from a uniform foam having a specific weight of
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Applied Fluid Mechanics (7th Edition)
- A cylindrical buoy 0.60 m in diameter and 1.80m high weighs 205kg. It is moored in salt water to a 12m length of chain weighing 12 kg/m of length. At high tide the height of the buoy protruding above water is 0.84m. What could be the height pf protrusion of the buoy if the tide dropped 2.10m? Specific weight of the steel chain is 7,790 kg/m^3. 206kg 0.84m W.S. 0.96m h,arrow_forward4.0 m السرو 4.0 m The raft is made of solid square Pinewood (density= 550 kg/m'). Determine whether the raft floats in water (density = 1000 kg/m) and if so, how much of the raft is beneath the water surface. Weight of raft 0.30 m Since the density of the raft (pinewood) is less than that of water, the raft foats. Q: A force of 250 N is applied to a hydraulic piston that is 0.01 m in diameter. If the piston which supports the load has a diameter of 0.10 m, approximately how much mas can be lifted? 250 N 0.01 m 0.10 marrow_forwardA trough whose cross section is a trapezoid is b = 4 m across at the bottom, a = 6 m across at the top, and 3 m deep. If the trough is filled to 1 m with water, what is the force due to water pressure on one end of the trough? с b (Hint: Using SI units, pg = 9800 N/m³.) (Use decimal notation. Give your answer to two decimal places.)arrow_forward
- A 4.9 cubic feet of water are compressed to 5000 psig. What is the volume decrease if the temperature is 60°F? Assume the average bulk modulus of elasticity of 311 000 psi.arrow_forwardYour calculation and explanation are helpful. Next, Calculate elastic modulusYour observation of the gluten-free pancakes shows that they are much softer. For that reason you only use a 0.7 kg weight. Now the height of the pancake stack decreases from its initial value of 55 mm to a final value of 46 mm. Use these measurements to calculate the elastic modulus of the pancakes. Express your answer in Pascals but without including the unit.Next, Calculating distance between bonds Given your measurement of the elastic modulus, what is the distance between the bonds in the gluten-free pancakes? Assume that the interaction energy between the molecules in the gluten free pancake recipe is Uint = kBT = 4*10-21J The cross link distance isa) larger than 1 micronb) between 100 nm and 1 micronc) between 10 nm and 100 nmd) between 1 nm and 10 nme) smaller than 1 nmarrow_forward5. A triangular gate 4 ft base and 6 ft high is placed on the surface of a dam shown in the figure. Its base is hinged and the vertex is attached to a cylindrical buoy whose weight is 100 lb. The external diameter of the buoy 12.8 ft is 4 ft and the weight of the gate is 200 lb. The mechanism is such that the buoy will open the gate if water surface will rise higher than 12.8 ft. What is the height of the cylinder below the water surface. Answer:5.73 ft 4 ft 0.6 0.8 + a ft 6 ftarrow_forward
- . A buoy is a solid cylinder 0.30 m in diameter and 1.20 m long. It is made of material with a specific weight of 7.90 kN/m³. If it floats upright, how much of its length is above the water. Answer: H = Water y = 9806.6 N/m³ H d = 0.3m L = 1.2 marrow_forwardHow much does the water in an aquarium 2.5 ft long, 1.5 ft wide and 1.0 ft deep weight? (weight density of water = 62 lb / ft') * 155 lb 74 lb 120 lb 233 lb A closed rectangular box with dimensions 4m X 8 m X 15m (L x W x H) is filled with air. What is the pressure exerted by the air on the bottom surface of the box? (the density of air is 1. 29 kg / m^3) * 220 Pa 202 Pa 178 Pa 190 Pa A water tank springs a leak from which water emerges at 15 ft/s. The height of the water surface above the leak is * O 3.5 ft O 4.2 ft O 1.9 ft O 2.3 ftarrow_forwarda cubical block with a density of 2500 kg/m^3 fully submerged in water and tied to a box 0.3x0.6x0.9 m size is held down just under the water surface. The box has a mass of 110 kg. A. Determine the dimension of the cubical block in meters. B. Determine the tension in the rope in Newtons.arrow_forward
- H.W: A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area (2.50x10-5) m2, and the needle has a cross-sectional area (1.00x10 8 ) m². In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force F of magnitude 2.00 N acts on the plunger, making medicine squirt horizontally from the needle. Determine the speed of the medicine as it leaves the needles tip.arrow_forwardWhat is the depth of the liquid in a container if the specific weight of the liquid is 56 Ib/ft3, the container weighs 33 lb, and has a diameter of 63 in? A load cell measures the total weight to be 746 lb.arrow_forwardA tank holds water (density of 995.7 kg/m3) with a triangular gate located at the bottom right. The gate is an isosceles triangle with a base/width of 0.7 m and a height of 1.4 m. What force (F) applied at the gate's centroid is needed to keep the gate closed? The height from the water surface to the gate centroid is given by h = 4.9 m. Please note that the side view of the gate is shown and that the force is applied at the gate's centroid, although not accurately drawn.arrow_forward
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