Physics, 24.07.2019 00:00 straightbarz4643
30 points if you ask in 5 minutes why is it impossible to create a perpetual motion machine? energy will eventually be converted into heat and the machine will burn up. some of the energy will always be lost in the conversion and therefore it will eventually stop. the friction that exists within machines will eventually cause the levers to break. it is not impossible; perpetual motion machines already exist.
Answers: 1
Physics, 22.06.2019 15:00
Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?
Answers: 2
Physics, 22.06.2019 20:40
In addition to gravity, what is the other predominant force that affects the motion of a pendulum?
Answers: 1
30 points if you ask in 5 minutes why is it impossible to create a perpetual motion machine? energy...
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