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PartA You purchase a rectangular piece of metal that has dimensions 10.0 mm x 10.0 mm x 20.0 mini and mass 1.70*10 -kg . The seller tells you that the metal is gold. To check this, you compute the average density of the What value do you get? piece. Express your answer in kilograms per cubic meter. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of The weight of a roomful of air. AEd P: kg/m Submit Previous Answers Request Answer X Incorrect; Try Again; 19 attempts remaining Part B Were you cheated? Yes. O No. Submit Request Answer Provide FeedbackPart A Calculate the weight of air at 20"C in a room that measures 5.02 x 4.50 x 3.25 m. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Give your answer in newtons. The weight of a roomful of air. Express your answer with the appropriate units. HA W = Value Units Submit Request Answer Part B Give your answer in pounds. Express your answer in pounds. W = Ib Submit Request Answer Provide FeedbackPart A A cube of compressible material (such as Styrofoam or balsa wood) has a density p and sides of length L. If you keep its mass the same, but compress each side to 0.200 of its length. what will be its new density. in terms of p? IVO he0 ? P2 Submit Request Answer Part B If you keep the mass and shape the same, what would the length of each side have to be (in terms of _) so that the density of the cube was 6.00 times its original value? IVO LZ Submit Request Answer Provide FeedbackPart A You are designing a manned submersible to withstand the pressure of seawater at the bottom of the Mariana Trench, which is one of the deepest parts of the earth's oceans. The bottom of the trench is at a depth of 10,900 m. What is the gauge pressure at this depth? (You can ignore the small changes in the density of the water with depth.) Express your answer in pascals. AEd Pa Submit Request Answer Part B What is the inward force on a circular glass window 4.0 ci in diameter due to the water outside? Express your answer in newtons. IVO Submit Request Answer Part C If the internal pressure is 1 atm, what outward force does this produce on the window? (You may ignore the small variation in pressure over the surface of the window.) Express your answer in newtons. IVO N Submit Request AnswerPart A What gauge pressure must a pump produce to pump water from the bottom of the Grand Canyon (elevation 730 m ) to Indian Gardens (elevation 1370 m )? Express your result in pascals and in atmospheres. Express your answer in pascals. DA Pgauge Pa Submit Request Answer Part B Express your answer in atmospheres. DA ? Pgauge atm Submit Request AnswerPart A An electrical short cuts off all power to a submersible diving vehicle when it is a distance of 26 In below the surface of the ocean. The crew must push out a hatch of area 0.80 m and weight 300 N on the bottom to escape If the pressure inside is 1.0 ati, what downward force must the crew exert on the hatch to open it? For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Express your answer in newtons. Feeling light-headed? IVO ? F = N Submit Request Answer Provide FeedbackPart A You are designing a machine for a space exploration vehicle. It contains an enclosed column of oil that is 1.10 m tall, and you need the pressure difference between the top and the bottom of this column to be 8.00x10#2 atm . What must be the density of the oil? For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Express your answer in kilograms per meter cubed. Feeling light-headed?. IVO AEd kg/m3 Submit Request Answer Part B If the vehicle is taken to Mars, where the acceleration due to gravity is 0.379 g. what will be the pressure difference (in earth atmospheres) between the top and bottom of the oil column? Express your answer in atmospheres. AEd 0 ? APMars atm Submit Request Answer Provide FeedbackPart A A barrel contains a 0.120 m layer of oil of density 680 kg/in* floating on water that is 0.250 III deep What is the gauge pressure at the oil-water interface? For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Express your answer in pascals. Feeling Light-headed? DAI ? Pgauge = Pa Submit Request Answer Part B What is the gauge pressure at the bottom of the barrel? Express your answer in pascals. Pgauge= Pa Submit Request AnswerPart A You are designing a hydraulic lift for an automobile garage. It will consist of two oil-filled cylindrical pipes of different diameters. A worker pushes down on a piston at one end, raising the car on a platform at the other end. See ( Figure 1). To handle a full range of jobs, you must be able to lift cars up to 3000 kg . plus the 500 kg platform on What should be the diameter of the pipe under the platform? which they are parked. To avoid injury to your workers, the maximum amount of force a worker should need to exert Express your answer in meters 's 100 N. AEd Submit Request Answer Part B If the worker pushes down with a stroke 45 CINI long. by how much will he raise the car at the other end? Express your answer in millimeters. IVO Submit Request Answer Provide Feedback Figure 25 cm d = ?Part A A solid aluminum ingot weighs 82.0 N in air. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of What is its volume? raising sunken treasure Express your answer in meters cubed. V = Submit Request Answer Part B The ingot is suspended from a rope and totally immersed in water. What is the tension in the rope (the apparent weight of the ingot in water)? Express your answer in newtons. T' N Submit Request Answer Provide Feedback