Physics, 13.01.2020 20:31 eeeeee9848
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. the first disk, with rotational inertia 3.5 kg·m2 about its central axis, is set spinning counterclockwise at 550 rev/min. the second disk, with rotational inertia 5.4 kg·m2 about its central axis, is set spinning counterclockwise at 1100 rev/min. they then couple together.
(a) what is their angular speed (rev/min) after coupling?
(b) if instead the second disk is set spinning clockwise at 1100 rev/min, what is their angular velocity (in rev/min, using the correct sign for direction) after they couple together?
Answers: 3
Physics, 22.06.2019 11:00, chelton3813
The government has declared that a hurricane is likely to hit the east coast. which government division is part of acf and provides guidance to citizens? a. job opportunities for low-income individuals b. office of human services emergency preparedness and response c. assets for independence d. low-income home energy assistance program
Answers: 1
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be b...
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