Can you explain these in easy words:
1. conservation of energy
2. machine (device used to multiply forces or simply to change the direction of forces)
3. efficiency (work output, work input, etc.)
i rly need help :(
2007-11-24 22:43:18 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
I don't want to be your physics tutor.
1. Energy cannot be created or destroyed. In all physics, all energy can be accounted for. Energy is conserved at all times.
2. A machine is a device that can multiply forces or change the direction of the force.
3. Efficiency is the ratio of work output to work input for a machine.
2007-11-24 22:55:28 · answer #1 · answered by Anonymous · 0⤊ 0⤋
1. energy is changed from one form to another
2. a device where the effort is many times the load
3. percentage of work output over work input
2007-11-24 23:33:55 · answer #2 · answered by kenlkl 1 · 0⤊ 0⤋
First question: Yes
My question: What do you pay? Surely you don't want to break the Law of Conservation of Energy and try and get something for nothing?
2007-11-25 03:22:02 · answer #3 · answered by za 7 · 0⤊ 0⤋