Mathematics, 20.06.2020 02:57 kirstennnash
An aquarium 8 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half of the water out of the aquarium. (Use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.) Show how to approximate the required work by a Riemann sum. (Let x be the height in meters below the top of the tank. Enter xi* as xi.)
Answers: 1
Mathematics, 21.06.2019 17:20
Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem
Answers: 3
Mathematics, 21.06.2019 23:00
Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.
Answers: 1
Mathematics, 22.06.2019 02:30
Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias
Answers: 2
An aquarium 8 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half of...
Social Studies, 19.08.2021 15:50
Physics, 19.08.2021 15:50
Physics, 19.08.2021 15:50
History, 19.08.2021 15:50
Chemistry, 19.08.2021 15:50
English, 19.08.2021 15:50
Mathematics, 19.08.2021 15:50
Mathematics, 19.08.2021 15:50
Spanish, 19.08.2021 15:50
History, 19.08.2021 15:50
Geography, 19.08.2021 15:50
Mathematics, 19.08.2021 16:00
Chemistry, 19.08.2021 16:00