2007-06-19 06:45:03 · 5 answers · asked by DELIANA A 1 in Science & Mathematics ➔ Biology
Energy cannot be destroyed or created.
2007-06-19 06:52:55 · answer #1 · answered by slam_92 3 · 1⤊ 0⤋
Energy cannot be created or destroyed. Therefore the energy needed to move the machine must already exist in some other form and the machine will only remain in motion for the amount of time the provided energy will allow.
2007-06-19 06:54:05 · answer #2 · answered by Anonymous · 2⤊ 0⤋
Did you mean excludes the possibility? Thermodynamics and the concept of entropy. Closed structures continually lose power till something places power back into them. A perpetual action gadget is, on the 2d, impossible because of the fact it could require a limiteless enter of power. we don't be attentive to of any countless materials of power (even stars burn out finally), so no perpetual action machines. they could be achieveable, in spite of the shown fact that, if the gadget grew to grow to be an open device. in case you may layout a gadget that could pass around the universe and assemble the flexibility around it (assuming the universe had a limiteless quantity of power), you may theoretically make one.
2016-10-18 01:14:10 · answer #3 · answered by thao 4 · 0⤊ 0⤋
Conservation
2007-06-19 06:52:15 · answer #4 · answered by Anonymous · 1⤊ 0⤋
For $1000, "What is friction?"
2007-06-19 06:53:13 · answer #5 · answered by Doc 7 · 0⤊ 0⤋