Physics, 26.06.2020 16:01 zandariouslee
g What is the final angular velocity, ωf, of the two disks? Express ωf in terms of It, Ir, and ωi. View Available Hint(s) ωf = nothing Part B Because of friction, rotational kinetic energy is not conserved while the disks' surfaces slip over each other. What is the final rotational kinetic energy, Kf, of the two spinning disks? Express the final kinetic energy in terms of It, Ir, and the initial kinetic energy Ki of the two-disk system. No angular velocities should appear in your answer. View Available Hint(s) Kf = nothing Part C Assume that the turntable deccelerated during time Δt before reaching the final angular velocity ( Δt is the time interval between the moment when the top disk is dropped and the time that the disks begin to spin at the same angular velocity). What was the average torque, ⟨τ⟩, acting on the bottom disk due to friction with the record? Express the torque in terms of It, ωi, ωf, and Δt. View Available Hint(s) ⟨τ⟩ = nothing Provide Feedback
Answers: 3
Physics, 21.06.2019 18:20
Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1
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Physics, 22.06.2019 00:50
While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.
Answers: 3
Physics, 22.06.2019 02:00
Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?
Answers: 3
Physics, 22.06.2019 11:30
In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque
Answers: 1
g What is the final angular velocity, ωf, of the two disks? Express ωf in terms of It, Ir, and ωi. V...
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