Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. a trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. (a) if a human centrifuge has a radius of 4.50 m, what angular speed results in a centripetal acceleration of 9g? (b) what linear speed would a person in the centrifuge have at this acceleration? 21. a 55.0-kg ice skater is moving at 4.00 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. she then moves in a circle of radius 0.800 m around the pole.(a) determine the force exerted by the horizontal rope on her arms. (b) compare this force with her weight. 22.ta 40.0-kg child swings in a swing supported by two chains, answer to part (d) long. the tension in each chain at the lowest at the lowest point each 3.00 m point is 350 n. find (a) the child's speed and (b) the force exerted by the seat on the child at the lowest point. (ignore the mass of the seat.) b t 23. a certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 32.0 m/s. with what maxi- speed can it go around a curve having a radius of 75.0 m 24. bio a sample of blood is placed in a centrifuge of radius 15.0 cm. the mass of a red blood cell is 3.0 x 1016 kg, and the magnitude of the force acting plasma is 4.0 x 10 n. at how many revolutions per second should the centrifuge be operated? mum on it as it settles out of the unless otherwise noted, all content on this page is @ cengage learning
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Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system
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At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?
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Amira pulls a 3 pound wagon 4 feet. how much work has she done?
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Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.
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Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuve...
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