Determine the magnitude of the resultant force the oil (SG=0.77) exerts on the curved vertical wall. The wall is 2.5 wide. 5m 45° 45° B O 637.61 kN 490.96 kN 529.20 kN 302.76 kN
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- A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water whereas a large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort when it is forced under the surface), which he forces under the surface of the water. If the child needs to supply 5.00×102 N5.00×102 N to totally submerge the ball, calculate the diameter ?d of the ball. The density of water is ?w=1.000×103 kg/m3,ρw=1.000×103 kg/m3, the density of styrofoam is ?foam=95.0 kg/m3,ρfoam=95.0 kg/m3, and the acceleration due to gravity is ?=9.81 m/s2.Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area (in cm2) of the tires in contact with the ground. The bicycle plus rider has a mass of 75.0 kg, and the gauge pressure in the tires is 3.45 ✕ 105 Pa.་ Part A Determine the absolute pressure on the bottom of a swimming pool 30.0 m by 8.0 m whose uniform depth is 1.9 m. Express your answer using two significant figures. P = ΟΙ ΑΣΦ Submit Request Answer Part B ? Determine the total force on the bottom of a swimming pool. Express your answer using two significant figures. F = ΜΕ ΑΣΦ Submit Request Answer Part C ? N/m² N What will be the pressure against the side of the pool near the bottom? Express your answer using two significant figures.
- The wing span of an Airbus A300 is 44.8 m.a) What area is swept out per second when the plane is in level flight at 250 m s-1?The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 1.50 g is supported by a needle, the tip of which is a circle 0.150 mm in radius, what pressure is exerted on the record in N/m2?You are planning on installing a new above-ground swimming pool in your backyard. The pool will be rectangular with dimensions 31.0 m x 10.0 m. It will be filled with fresh water to a depth of 1.90 m. In order to provide the appropriate structural support, you wish to determine the following. (a) Determine the force exerted on the bottom of the pool by the water (in N). N (b) Determine the force exerted on each end of the pool by the water (in N). (Assume the end is the 10.0 m wall.) N (c) Determine the force exerted on each side of the pool by the water (in N). (Assume the side is the 31.0 m wall.) N (d) You wish to have swimming parties with your children and grandchildren. At a given time, you might have 29 people with an average mass of 75.0 kg in the pool. You need to determine if such parties will affect your calculations for the required strength of materials supporting your pool. O The parties will not affect the required strength since the forces on the surfaces will increase…
- A 50.0 kg woman balances on the heel of a pair of higheeled shoes. If the heel is circular and has a radius of 0.500 cm, what pressure does she exert on the floor?A dart gun contains a spring of spring constant k = 16 N/m which is used to shoot a dart of mass m. The dart leaves the gun at a speed of v = 3.1 m/s after the spring is compressed 1 cm. what is the darts speed when it hits the floor (vf in m/s) if it is fired horizontally at a height of h = 2 m what angle in degree does the darts final velocity make with the horizontal?5. Ethyl alcohol moves through a 6.0 cm diameter pipe that is resting on the ground. The ethyl alcohol in the ground-level section of the pipe is moving with a pressure of 86.0 kPa. The pipe then rises a vertical distance of 2.0 m and reduces in diameter to 4 cm. The pressure of the ethyl alcohol in the 4 cm diameter section is measured to be 29.3 kPa. (You will need both Continuity and Bernoulli's Equations!) 1 4.0 cm a. Find the speed of the fluid in the ground-level section of the pipe. Find the speed of the fluid in the higher section of the pipe. b. 2.0 m {not to scale) 6.0 cm
- A boat with a flat bottom and it's cargo weight 4285N. The area of the boat's bottom is 7m2. How far below the surface of the water is the boat's bottom? The surface of the lake? Use g=9.8m/s2The wing span of an Airbus A300 is 44.8 m.a) What area is swept out per second when the plane is in level flight at 250 m s-1?Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area (in cm2) of the tires in contact with the ground. The bicycle plus rider has a mass of 75.0 kg, and the gauge pressure in the tires is 3.45 ✕ 105 Pa.