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Physics, 21.06.2019 22:20
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
Answers: 2
Physics, 22.06.2019 04:50
Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k
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Physics, 22.06.2019 09:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
Physics, 22.06.2019 14:00
Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car
Answers: 1
Sophia is planning on going down an 8-m high water slide. Her weight is 50 N. What is Sophia's Gravi...
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