Physics, 26.11.2019 03:31, daniellacalles
At a certain factory, 280 kg crates are dropped vertically from a packing machine onto a conveyor belt moving at 0.90 m/s. (a motor maintains the belt's constant speed.) the coefficient of kinetic friction between belt and crate is 0.400. after a short time, slipping between the belt and the crate ceases and the crate then moves along with the belt. consider the period of time during which the crate is being brought to rest relative to the belt. (a) calculate, for a coordinate system at rest in the factory, the kinetic energy supplied to the crate. (b) calculate, for a coordinate system at rest in the factory, the magnitude of the kinetic frictional force acting on the crate. (c) calculate, for a coordinate system at rest in the factory, the energy supplied by the motor. (d) explain why the answers to (a) and (c) are different.
Answers: 3
Physics, 21.06.2019 16:50, BeverlyFarmer
Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f
Answers: 2
Physics, 22.06.2019 20:20, breannaasmith1122
Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.
Answers: 3
Physics, 23.06.2019 07:00, JaquoiaDean9823
Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.
Answers: 2
Physics, 23.06.2019 10:00, karebareyo
Acar tire rotates at a constant angular velocity of 3.5 rotations during a time interval of 0.75 seconds. what is the angular speed of the tire? in advance for any !
Answers: 2
At a certain factory, 280 kg crates are dropped vertically from a packing machine onto a conveyor be...
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