Physics, 24.06.2019 18:50 jasramos004
Aball is thrown down vertically with an initial speed of 31 ft/s from a height of 40 ft. (a) what is its speed just before it strikes the ground? (b) how long does the ball take to reach the ground? what would be the answers to (c) part a and (d) part b if the ball were thrown upward from the same height and with the same initial speed ? before solving any equations, decide whether the answers to (c) and (d) should be greater than, less than, or the same as in (a) and (b).
Answers: 1
Physics, 21.06.2019 21:50
Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?
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A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?
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Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?
Answers: 2
Aball is thrown down vertically with an initial speed of 31 ft/s from a height of 40 ft. (a) what is...
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