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Physics, 21.06.2019 23:20
Initially, a particle is moving at 5.33 m/s at an angle of 37.9Β° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2Β° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?
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Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0Γ10β5 kgβ
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
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