No, some energy will always be lost (usually as waste heat) without doing any work.
No, this is not possible. The Law of Conservation of Energy states that this is not possible; there are good reasons to believe that this law can't be violated.
do fashion designers work more with machines than people
Pediatricians work with people much more than they work with machines.Pediatricians mainly work with people, but they use some diagnostic machines like a stethoscope, x-ray machine, etc.
i think with both because they need machines in order to find clues of their case
Elliptical machines can be more effective for weight loss than treadmills. This type of work out really depends on your body. everyone's body are different.
Hybrid machines
Because it is
Because they save a lot more work.
Machines can often work faster, or for longer, or more vigorously than humans. Consider a postal sorter, a water pump, and a bulldozer. They are a good substitute for our physical labour.
No machine is 100% efficient. The amount of work you get out of the machine is always something less than the amount of work you put into it. So you have to put in more work than the job actually requires. It's the price you pay for making the job 'easier' by using the machine to do it.
the simplest answer is that it made our life easier but at the same time made us physically unfit by making the work through machines like now a days people started to use more and more machines rather than doing the work on their own.
When simple machines work together, that forms a compound machine.
Yes. More times than we can imagine.